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• How to seek to a specific time in a RTP stream?

  - by Cipi

  I am streaming a prerecorded H264 video that has the following structure: [I] [x] [x] [x] [I] [x] [x] [x] [I]... In between the IDR (I-s in my structure) I have 32 (only 3 presented here) other frames (all other stuff that is not IDR like SEI, SPS, PPS... X-es) Now, let assume that the timing of my frames is such: TIME: 1 2 3 4 5 6 7 8 9 FRAME: [I] [x] [x] [x] [I] [x] [x] [x] [I]... Now i want to seek to the time 4. If I seek to that frame, and send it, the picture gets messed up because the decoder needs a IDR to decode it properly, so I resorted to finding the appropriate IDR (in this case one with the time 1) and sending it as the frame with the time 4. So now the picture is decoded properly, all is well... but... If my GOV is 32, and I need to send the non IDR frame that has the index 31, and if the time span between it and the corresponding IDR is 3 seconds, I actually get 3 seconds earlier then the time I want. Now, this is not precise, because I cannot seek to the half of the GOV time span. Also, I cant set smaller GOV, so I want other ideas... My other idea was to send the last known IDR, and then send all other non IDR frames that come before the one I want, only I would set for all of them RTP-TIME to be the same as the corresponding IDR. In this case the picture gets decoded perfectly, but now in the above case, 3 seconds that follow non IDR frame with the wanted time get fast paced in the decoder/player (there is no instantaneous seek)... Any ideas? Or I can only seek to IDR-s and not the frames in between?

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• Puppet gives SSL error because master is not running?

  - by Daniel Huger

  I started with two clean machines this time. My master is running 12.04 Version: 2.7.11-1ubuntu2 Depends: ruby1.8, puppetmaster-common (= 2.7.11-1ubuntu2) My client is 10.04 Version: 2.6.3-0ubuntu1~lucid1 Depends: puppet-common (= 2.6.3-0ubuntu1~lucid1), ruby1.8 To setup Puppet tutorial: http://shapeshed.com/setting-up-puppet-on-ubuntu-10-04/ To connect master and client: http://shapeshed.com/connecting-clients-to-a-puppet-master/ The first time I tried to connect master to client failed with SSL_connect error. So I did rm -rf /etc/puppet/ssl/ to remove all the keys inside ssl folders. It looked like it work.... BUT client# puppet agent --server puppet --waitforce 60 --test /usr/lib/ruby/1.8/facter/util/resolution.rb:46: warning: Insecure world writable dir /etc/condor in PATH, mode 040777 /usr/lib/ruby/1.8/puppet/defaults.rb:67: warning: Insecure world writable dir /etc/condor in PATH, mode 040777 info: Creating a new SSL key for giab10 warning: peer certificate won't be verified in this SSL session info: Caching certificate for ca warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session info: Creating a new SSL certificate request for mybox123 info: Certificate Request fingerprint (md5): XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session warning: peer certificate won't be verified in this SSL session info: Caching certificate for mybox123 err: Could not retrieve catalog from remote server: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed warning: Not using cache on failed catalog It cached but then it couldn't retrieve it. Let me stop here.... worrying I would mess something up. But let's check master's status. * master is not running WoW.... ??? master# service puppetmaster start * Starting puppet master [OK] master# service puppetmaster status * master is not running I think time is sync. Well, we are behind a firewall so the port to sync time is disbaled. I checked with date and they seem okay. What about master not running? Is that the cause? Any help is appreciated. Thanks! /var/lib/puppet/log/masterhttp.log [2012-06-30 00:13:25] INFO WEBrick 1.3.1 [2012-06-30 00:13:25] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:13:25] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 00:19:40] INFO WEBrick 1.3.1 [2012-06-30 00:19:40] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:19:40] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 00:28:58] INFO WEBrick 1.3.1 [2012-06-30 00:28:58] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 00:28:58] WARN TCPServer Error: Address already in use - bind(2) [2012-06-30 15:31:25] INFO WEBrick 1.3.1 [2012-06-30 15:31:25] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux] [2012-06-30 15:31:25] WARN TCPServer Error: Address already in use - bind(2) 1 S puppet 5186 1 0 80 0 - 29410 poll_s 15:44 ? 00:00:00 /usr/bin/ruby1.8 /usr/bin/puppet master --masterport=8140 4 S root 5235 5005 0 80 0 - 2344 pipe_w 15:45 pts/0 00:00:00 grep --color=auto puppet kill -9 5186 puppet master service puppetmaster status * master is not running I always have this error, but I always ignored it. http://pastebin.com/exbpArjv What could it mean? Time sync? Package not installed? Then how could we do puppetca in the first place?

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• Very very slow transfer speeds between Windows 7 and samba server running on Ubuntu 11.10/12.04 minimal

  - by kuzyt

  As mentioned in the title I tried transferring files between Windows 7 and the samba server running on both Ubuntu 11.10 and 12.04 but both showed very slow transfer speeds. Can someone please guide me in the right direction to debug this problem ? wget --output-document=/dev/null http://tokyo1.linode.com/100MB-tokyo.bin --2012-08-21 22:02:17-- http://tokyo1.linode.com/100MB-tokyo.bin Resolving tokyo1.linode.com (tokyo1.linode.com)... 106.187.33.12 Connecting to tokyo1.linode.com (tokyo1.linode.com)|106.187.33.12|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 104857600 (100M) [application/octet-stream] Saving to: `/dev/null' 8% [=============> ] 8,923,980 64.8K/s eta 15m 0s wlan0 IEEE 802.11abgn ESSID:"TNET" Mode:Managed Frequency:2.462 GHz Access Point: 58:6D:8F:26:20:7A Bit Rate=117 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=57/70 Signal level=-53 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:101 Invalid misc:2448 Missed beacon:0 03:00.0 Network controller: Atheros Communications Inc. AR9300 Wireless LAN adaptor (rev 01) Subsystem: Atheros Communications Inc. Device 3112 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+ Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 16 Region 0: Memory at fea00000 (64-bit, non-prefetchable) [size=128K] Expansion ROM at fea20000 [disabled] [size=64K] Capabilities: [40] Power Management version 3 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=375mA PME(D0+,D1+,D2-,D3hot+,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+ Address: 0000000000000000 Data: 0000 Masking: 00000000 Pending: 00000000 Capabilities: [70] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <1us, L1 <8us ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <2us, L1 <64us ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Not Supported, TimeoutDis+ DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -6dB Capabilities: [100 v1] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr- CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn- Capabilities: [140 v1] Virtual Channel Caps: LPEVC=0 RefClk=100ns PATEntryBits=1 Arb: Fixed- WRR32- WRR64- WRR128- Ctrl: ArbSelect=Fixed Status: InProgress- VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans- Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256- Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01 Status: NegoPending- InProgress- Capabilities: [300 v1] Device Serial Number 00-00-00-00-00-00-00-00 Kernel driver in use: ath9k Kernel modules: ath9k

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• Is there a Windows equivalent of Unix 'CPU steal time'?

  - by Steffen Opel

  In order to assess performance monitoring accuracy on virtualization platforms, the CPU steal time has become an increasingly relevant metric - see EC2 monitoring: the case of stolen CPU for an instructive summary in the context of Amazon EC2 and IBM's paper on CPU time accounting for a more in-depth technical explanation (including illustrations) of the concept: Steal time is the percentage of time a virtual CPU waits for a real CPU while the hypervisor is servicing another virtual processor. Accordingly, it is exposed in most related Unix/Linux monitoring tools nowadays - see e.g. columns %steal or st in sar or top: st -- Steal Time The amount of CPU 'stolen' from this virtual machine by the hypervisor for other tasks (such as running another virtual machine). I've been unable to figure out how to capture the same metric on Windows though, is this possible already? (Ideally for the Windows 2008 Server R2 AMIs on EC2 and via a respective Windows Performance Counters of course.)

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• schedule a task to run every day within a time range?

  - by barlop

  How do I schedule a task to run once any time within a time range? and also, just once in a day without specifying a time? can windows task scheduler do it? and specifically, if my computer is off or on standby or hibernation at the time I want it to run it when it is on if it hasn't been run that day and the time has passed. I see an option to wake it to run the task , but could I then put it back to sleep? And i'd like to be able to as mentioned.. let it run when the computer is back on.

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• Which way should we choose to shorten backup time?

  - by facebook-100005613813158

  A company performs a full backup for its data in a daily basis for disaster recovery purposes. However, their backup process cannot be completed within the assigned backup time window. What would you recommend to this company about how to restructure its backup environment in order to minimize the backup time? We got 4 candidates, 1. Perform LAN based backup 2. Weekly full backup and daily incremental 3. Weekly full backup and daily cumulative 4. Add more ISL to increase bandwidth when comparing incremental backup with cumulative backup ,incremental backup time is surely shorter than cumulative backup time .But I don's know adding more ISL is allowed in an existing storage system,or can this operation really shorten backup time ?

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• File property information (last write time and file size) in explorer out of date by hours over netw

  - by David L Morris

  An application is running on a windows XP prof machine picking up file from a network share from another windows machine. It detects that the file has been updated (by date and time or optionally file size) and reads it for any new data. Most of the time the last write time and file size, seems to be up to date. Occasionally, this information stops being updated, even though the file is growing (intermittently during the day) with appended content, so that the last write time and file size remain fixed at some arbitrary moment. This is visible in explorer, where it shows a fixed last write time on the reading machine. Just opening the file to edit it in notepad, immediately refreshes the file properties, and the other application picks up where it left of. The file location can't be changed, nor the location of the relevant applications. Any solutions to resolve this problem?

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• What happens when router has been set to incorrect time?

  - by iamrohitbanga

  I have a D-Link router for my home Wi-Fi network. Everyday at least once the internet suddenly goes down. I am simply not able to connect to the Wi-Fi network. If I just restart the router, it starts working. To debug the issue I logged into the admin panel and noticed the time was set to something in 2002. I have set it to the correct time. Will wait to see if that fixes the problem. In the meanwhile I want to know what can go bad when the router has been set to show an incorrect time? What are the kinds of problems expected? My Wi-Fi was working just fine most of the time, but sometimes it lost the connection. Could this be linked to the incorrect time setting?

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• Are changes to the date and time logged in Windows Server?

  - by user17605

  We've recently gone into British Summer Time in the UK. One of our techs, anticipating the move, decided to change the time on one of our servers. Bad move. This server happens to have a number of time-based incidents logged to it, and as a result of this change, the times are unreliable. I'm trying to build a concrete timeline of when the clock was changed so I can apply corrective action to our time-based records. My question is:- Does Windows record date and time changes anywhere so I can get hard, actual data? Thanks

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• PHP, Codeigniter: How to Set Date/Time based on users timezone/location globally in a web app?

  - by Abs

  Hello all, I have just realised if I add a particular record to my MySQL database - it will have a date/time of the server and not the particular user and where they are located which means my search function by date is useless! As they will not be able to search by when they have added it in their timezone rather when it was added in the servers timezone. Is there a way in Codeigniter to globally set time and date specific to a users location (maybe using their IP) and every time I call date() or time() that users timezone is used. What I am actually asking for is probably how to make my application dependent on each users timezone? Maybe its better to store each users timezone in their profile and have a standard time (servers time) and then convert the time to for each user? Thanks all

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• how can we count the time interval of the animation in cocos2d ?

  - by srikanth rongali

  Hi, I am doing my program in cocos2d. I am using NSDate to get the current time of the start of animation. And I know my animation takes 3 seconds. So I can get the time at completion of animation by using NSInterval and using the previous time and animation time. But, if If the animation time interval is not fixed how can I calculate the time interval of the animation and time at the completion of the animation ? I am animating a sprite. Please help how can I make it. Thank You.

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• How to determine page generation time with Struts 2 ?

  - by Samuel_xL

  I'm using Struts 2 and I'd like to determine the page generation time without an external profiler. I can easily profile the actions execute() method, but I don't know how to include the time spent before (in dispatchers, interceptors...) and after (time taken by the servlet corresponding to the view ("jsp time")). Is there simple way to do this ? And if there isn't, how could I, at least, profile the "jsp time" (maybe a tag I'm not aware of ?) ? I think it would be accurate enough to just take in account action time + jsp time. Thanks.

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• Hosting a website on Heroku.... I know how to, but im running into problems!

  - by Thomas Miller

  I'm starting to learn more on the back-end scale of programing. Recently I started up Heroku for the second or third time. This time I actually installed the Git update to my Mac and installed Heroku in the terminal. I wanted to upload a static html site with the sinatra gem. Everything worked out fine inside the terminal, though I added sinatra after I got everything working and the file with the site hooked up to Heroku. In my logs I did see that I was missing the sinatra gem, so I installed it. My site contains both the proper app.rb and config.ru files. I have nothing showing up online. Just a blank screen! Contacting Heroku on this problem has been very difficult. I get a responce every day, and on every day I respond with a question to the answer that didn't help me at all. 2011-05-18T00:25:20+00:00 app[web.1]: 71.198.0.51 - - [17/May/2011 17:25:20] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T00:25:20+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T00:25:26+00:00 app[web.1]: 71.198.0.51 - - [17/May/2011 17:25:26] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T00:25:26+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=5ms bytes=313 2011-05-17T18:25:51-07:00 heroku[web.1]: Idling 2011-05-17T18:26:01-07:00 heroku[web.1]: State changed from up to down 2011-05-18T01:26:01+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T01:26:01+00:00 app[web.1]: Stopping ... 2011-05-18T01:26:02+00:00 heroku[web.1]: Process exited 2011-05-17T20:12:46-07:00 heroku[web.1]: Unidling 2011-05-17T20:12:47-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T03:12:48+00:00 heroku[web.1]: Starting process with command: thin -p 40055 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T03:12:49+00:00 app[web.1]: Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T03:12:49+00:00 app[web.1]: Maximum connections set to 1024 2011-05-18T03:12:49+00:00 app[web.1]: Listening on 0.0.0.0:40055, CTRL+C to stop 2011-05-18T03:12:50+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=9954ms service=6ms bytes=565 2011-05-18T03:12:50+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:12:50] "GET /style.css HTTP/1.1" 200 - 0.0012 2011-05-18T03:12:50+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-17T20:12:50-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T03:12:51+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:12:51] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T03:12:51+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-18T03:13:05+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=5ms bytes=565 2011-05-18T03:13:05+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:13:05] "GET / HTTP/1.1" 200 293 0.0011 2011-05-18T03:13:05+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T03:13:05+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:13:05] "GET /favicon.ico HTTP/1.1" 404 18 0.0007 2011-05-18T03:57:05+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:05] "GET / HTTP/1.1" 200 293 0.0007 2011-05-18T03:57:05+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=4ms bytes=565 2011-05-18T03:57:05+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:05] "GET /style.css HTTP/1.1" 200 - 0.0007 2011-05-18T03:57:05+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T03:57:08+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:08] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-17T21:58:27-07:00 heroku[web.1]: Idling 2011-05-18T04:58:30+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T04:58:30+00:00 app[web.1]: Stopping ... 2011-05-18T04:58:30+00:00 heroku[web.1]: Process exited 2011-05-17T21:58:33-07:00 heroku[web.1]: State changed from up to down 2011-05-17T23:11:58-07:00 heroku[web.1]: Unidling 2011-05-17T23:11:58-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T06:12:00+00:00 heroku[web.1]: Starting process with command: thin -p 40091 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T06:12:01+00:00 app[web.1]: Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T06:12:01+00:00 app[web.1]: Maximum connections set to 1024 2011-05-18T06:12:01+00:00 app[web.1]: Listening on 0.0.0.0:40091, CTRL+C to stop 2011-05-18T06:12:01+00:00 app[web.1]: 183.97.156.226 - - [17/May/2011 23:12:01] "GET / HTTP/1.1" 200 293 0.0017 2011-05-18T06:12:02+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=3209ms service=5ms bytes=565 2011-05-18T06:12:03+00:00 app[web.1]: 183.97.156.226 - - [17/May/2011 23:12:03] "GET /style.css HTTP/1.1" 200 - 0.0019 2011-05-17T23:12:08-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T00:13:13-07:00 heroku[web.1]: Idling 2011-05-18T00:13:16-07:00 heroku[web.1]: State changed from up to down 2011-05-18T07:13:16+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T07:13:16+00:00 app[web.1]: Stopping ... 2011-05-18T07:13:17+00:00 heroku[web.1]: Process exited 2011-05-18T01:54:21-07:00 heroku[web.1]: Unidling 2011-05-18T01:54:21-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T08:54:23+00:00 heroku[web.1]: Starting process with command: thin -p 59491 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T08:54:24+00:00 app[web.1]: Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T08:54:24+00:00 app[web.1]: Maximum connections set to 1024 2011-05-18T08:54:24+00:00 app[web.1]: Listening on 0.0.0.0:59491, CTRL+C to stop 2011-05-18T01:54:28-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=6943ms service=6ms bytes=565 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET / HTTP/1.1" 200 293 0.0018 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /style.css HTTP/1.1" 200 - 0.0014 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=1ms bytes=313 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=1ms bytes=313 2011-05-18T02:55:23-07:00 heroku[web.1]: Idling 2011-05-18T02:55:33-07:00 heroku[web.1]: State changed from up to down 2011-05-18T09:55:34+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T09:55:34+00:00 app[web.1]: Stopping ... 2011-05-18T09:55:34+00:00 heroku[web.1]: Process exited 2011-05-18T07:23:10-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T14:23:12+00:00 heroku[web.1]: Starting process with command: thin -p 20560 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T14:23:13+00:00 app[web.1]: Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T14:23:13+00:00 app[web.1]: Maximum connections set to 1024 2011-05-18T14:23:13+00:00 app[web.1]: Listening on 0.0.0.0:20560, CTRL+C to stop 2011-05-18T07:23:13-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET / HTTP/1.1" 200 293 0.0018 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=7ms bytes=565 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET /style.css HTTP/1.1" 200 - 0.0015 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET /favicon.ico HTTP/1.1" 404 18 0.0009 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T08:24:03-07:00 heroku[web.1]: Idling 2011-05-18T08:24:07-07:00 heroku[web.1]: State changed from up to down 2011-05-18T15:24:07+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T15:24:07+00:00 app[web.1]: Stopping ... 2011-05-18T17:34:27-07:00 heroku[web.1]: Unidling 2011-05-18T17:34:28-07:00 heroku[web.1]: State changed from created to starting 2011-05-19T00:34:29+00:00 heroku[web.1]: Starting process with command: thin -p 57621 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T17:34:31-07:00 heroku[web.1]: State changed from starting to up 2011-05-19T00:34:32+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=5ms bytes=565 2011-05-19T00:34:32+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:32] "GET / HTTP/1.1" 200 293 0.0016 2011-05-19T00:34:32+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:32] "GET /style.css HTTP/1.1" 200 - 0.0011 2011-05-19T00:34:32+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-19T00:34:34+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-19T00:34:34+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:34] "GET /favicon.ico HTTP/1.1" 404 18 0.0007 2011-05-18T18:35:48-07:00 heroku[web.1]: Idling 2011-05-18T18:35:51-07:00 heroku[web.1]: State changed from up to down

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• Hosting a website on Heroku.... I know how to, but im running into problems!

  - by Thomas Miller

  I'm starting to learn more on the back-end scale of programing. Recently I started up Heroku for the second or third time. This time I actually installed the Git update to my Mac and installed Heroku in the terminal. I wanted to upload a static html site with the Sinatra gem. Everything worked out fine inside the terminal, though I added Sinatra after I got everything working and the file with the site hooked up to Heroku. In my logs I did see that I was missing the Sinatra gem, so I installed it. My site contains both the proper app.rb and config.ru files. I have nothing showing up online. Just a blank screen! Contacting Heroku on this problem has been very difficult. I get a response every day, and on every day I respond with a question to the answer that didn't help me at all. 2011-05-18T00:25:20+00:00 app[web.1]: 71.198.0.51 - - [17/May/2011 17:25:20] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T00:25:20+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T00:25:26+00:00 app[web.1]: 71.198.0.51 - - [17/May/2011 17:25:26] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T00:25:26+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=5ms bytes=313 2011-05-17T18:25:51-07:00 heroku[web.1]: Idling 2011-05-17T18:26:01-07:00 heroku[web.1]: State changed from up to down 2011-05-18T01:26:01+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T01:26:01+00:00 app[web.1]: >> Stopping ... 2011-05-18T01:26:02+00:00 heroku[web.1]: Process exited 2011-05-17T20:12:46-07:00 heroku[web.1]: Unidling 2011-05-17T20:12:47-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T03:12:48+00:00 heroku[web.1]: Starting process with command: `thin -p 40055 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T03:12:49+00:00 app[web.1]: >> Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T03:12:49+00:00 app[web.1]: >> Maximum connections set to 1024 2011-05-18T03:12:49+00:00 app[web.1]: >> Listening on 0.0.0.0:40055, CTRL+C to stop 2011-05-18T03:12:50+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=9954ms service=6ms bytes=565 2011-05-18T03:12:50+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:12:50] "GET /style.css HTTP/1.1" 200 - 0.0012 2011-05-18T03:12:50+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-17T20:12:50-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T03:12:51+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:12:51] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T03:12:51+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-18T03:13:05+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=5ms bytes=565 2011-05-18T03:13:05+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:13:05] "GET / HTTP/1.1" 200 293 0.0011 2011-05-18T03:13:05+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T03:13:05+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:13:05] "GET /favicon.ico HTTP/1.1" 404 18 0.0007 2011-05-18T03:57:05+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:05] "GET / HTTP/1.1" 200 293 0.0007 2011-05-18T03:57:05+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=4ms bytes=565 2011-05-18T03:57:05+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:05] "GET /style.css HTTP/1.1" 200 - 0.0007 2011-05-18T03:57:05+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T03:57:08+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:08] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-17T21:58:27-07:00 heroku[web.1]: Idling 2011-05-18T04:58:30+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T04:58:30+00:00 app[web.1]: >> Stopping ... 2011-05-18T04:58:30+00:00 heroku[web.1]: Process exited 2011-05-17T21:58:33-07:00 heroku[web.1]: State changed from up to down 2011-05-17T23:11:58-07:00 heroku[web.1]: Unidling 2011-05-17T23:11:58-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T06:12:00+00:00 heroku[web.1]: Starting process with command: `thin -p 40091 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T06:12:01+00:00 app[web.1]: >> Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T06:12:01+00:00 app[web.1]: >> Maximum connections set to 1024 2011-05-18T06:12:01+00:00 app[web.1]: >> Listening on 0.0.0.0:40091, CTRL+C to stop 2011-05-18T06:12:01+00:00 app[web.1]: 183.97.156.226 - - [17/May/2011 23:12:01] "GET / HTTP/1.1" 200 293 0.0017 2011-05-18T06:12:02+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=3209ms service=5ms bytes=565 2011-05-18T06:12:03+00:00 app[web.1]: 183.97.156.226 - - [17/May/2011 23:12:03] "GET /style.css HTTP/1.1" 200 - 0.0019 2011-05-17T23:12:08-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T00:13:13-07:00 heroku[web.1]: Idling 2011-05-18T00:13:16-07:00 heroku[web.1]: State changed from up to down 2011-05-18T07:13:16+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T07:13:16+00:00 app[web.1]: >> Stopping ... 2011-05-18T07:13:17+00:00 heroku[web.1]: Process exited 2011-05-18T01:54:21-07:00 heroku[web.1]: Unidling 2011-05-18T01:54:21-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T08:54:23+00:00 heroku[web.1]: Starting process with command: `thin -p 59491 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T08:54:24+00:00 app[web.1]: >> Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T08:54:24+00:00 app[web.1]: >> Maximum connections set to 1024 2011-05-18T08:54:24+00:00 app[web.1]: >> Listening on 0.0.0.0:59491, CTRL+C to stop 2011-05-18T01:54:28-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=6943ms service=6ms bytes=565 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET / HTTP/1.1" 200 293 0.0018 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /style.css HTTP/1.1" 200 - 0.0014 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=1ms bytes=313 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=1ms bytes=313 2011-05-18T02:55:23-07:00 heroku[web.1]: Idling 2011-05-18T02:55:33-07:00 heroku[web.1]: State changed from up to down 2011-05-18T09:55:34+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T09:55:34+00:00 app[web.1]: >> Stopping ... 2011-05-18T09:55:34+00:00 heroku[web.1]: Process exited 2011-05-18T07:23:10-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T14:23:12+00:00 heroku[web.1]: Starting process with command: `thin -p 20560 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T14:23:13+00:00 app[web.1]: >> Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T14:23:13+00:00 app[web.1]: >> Maximum connections set to 1024 2011-05-18T14:23:13+00:00 app[web.1]: >> Listening on 0.0.0.0:20560, CTRL+C to stop 2011-05-18T07:23:13-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET / HTTP/1.1" 200 293 0.0018 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=7ms bytes=565 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET /style.css HTTP/1.1" 200 - 0.0015 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET /favicon.ico HTTP/1.1" 404 18 0.0009 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T08:24:03-07:00 heroku[web.1]: Idling 2011-05-18T08:24:07-07:00 heroku[web.1]: State changed from up to down 2011-05-18T15:24:07+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T15:24:07+00:00 app[web.1]: >> Stopping ... 2011-05-18T17:34:27-07:00 heroku[web.1]: Unidling 2011-05-18T17:34:28-07:00 heroku[web.1]: State changed from created to starting 2011-05-19T00:34:29+00:00 heroku[web.1]: Starting process with command: `thin -p 57621 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T17:34:31-07:00 heroku[web.1]: State changed from starting to up 2011-05-19T00:34:32+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=5ms bytes=565 2011-05-19T00:34:32+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:32] "GET / HTTP/1.1" 200 293 0.0016 2011-05-19T00:34:32+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:32] "GET /style.css HTTP/1.1" 200 - 0.0011 2011-05-19T00:34:32+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-19T00:34:34+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-19T00:34:34+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:34] "GET /favicon.ico HTTP/1.1" 404 18 0.0007 2011-05-18T18:35:48-07:00 heroku[web.1]: Idling 2011-05-18T18:35:51-07:00 heroku[web.1]: State changed from up to down

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• Which Browser is the Best to Use When Running Your Laptop on Battery Power?

  - by Asian Angel

  Squeezing the maximum amount of usage time out of your laptop battery can be challenging at times…it all depends on the software you are using. One software we are all likely to be using is a browser to keep up with our online lives… If your laptop is older, then getting the most out of your laptop’s aging battery is definitely a must. The good folks over at the 7 Tutorials blog have done a comparison test to see which browser is the gentlest on your laptop’s battery and the results may surprise you. You can view the results by visiting the link below… Had better (or worse) luck with one of the browsers tested? Then make sure to share the results with your fellow readers in the comments! Test Comparison: Which Browser Will Make Your Laptop’s Battery Last Longer? [7 Tutorials] How to Own Your Own Website (Even If You Can’t Build One) Pt 3 How to Sync Your Media Across Your Entire House with XBMC How to Own Your Own Website (Even If You Can’t Build One) Pt 2

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• Why is my fresh install of 12.04 running slow?

  - by user75129

  Hey guys I'm a new linux user, I figured it would be the best for the laptop I just purchased because it's said to be faster than Windows 7. I'm currently dual-booting with Windows 7 Professial and Ubuntu 12.04. The laptop I am using is the LG X Note P210 Specs: Intel Core i5 470UM Dual Core clocked at 1.33GHz 12.5" HD LED LCD Screen at 1366 by 768 4GB DDR3 @ 1333 MHz RAM Integrated Intel HD Graphics Card 4 Cell Battery with 3150mAh It comes loaded Windows 7 Home Premium 64-Bit, it runs fine on that but my Ubuntu 12.04 runs slower than it and I don't understand why, it definitely has decent specs to run even a 64-bit operating system and do some gaming. Granted I know it's not the best but for a laptop it does the job so Ubuntu should work especially since it's said to make older units with worse specs run even better. I'm not all that familiar with coding and all so what are things I can do to optimize speed without overclocking? Boot up is fine, its program response time I believe, once Im in the actual OS, it lags, slows down, apps stop working, take forever to load up apps.

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• How would you TDD the functionality of getting the corresponding process of a running windows service?

  - by Matt Spinelli

  Purpose Over the last year or more I've been learning unit testing via books I've read recently like The Art of Unit Testing, Working Effectively with Legacy Code, and others. I've also been using unit tests, mocking frameworks, and the like, periodically at work and definitely see the value. However, I'm still having a hard time wrapping my mind around TDD (as opposed to TAD) when the situation calls for code that is gong to mostly use external API calls. Problem to solve Get the process associated with a windows service using the service name. example: Function GetProcess(ByVal serviceName As String) As Process Rules Show each major iteration in production & test code using TDD No need to see any other code or configuration that is required to get things to run. Just curious about the interfaces, concrete classes, and test methods. C# or VB.NET Must use the .Net framework regarding services/processes (i.e. System.Diagnostics.Process) Test Frameworks: Nunit or MSTest Isolation Frameworks: Moq, Rhino Mock, or Microsoft Moles Must write true unit tests (no integration tests) Additional notes As far as I can tell there are two approaches design wise. Use an Inversion of Control approach along with using the Adapter and/or Facade patterns to wrap the underlying .net framework objects dealing with processes and services. Keep the .net framework code in the class containing the Get Process method and use code detouring (interception) via Microsoft Moles to isolate the hard dependencies from the method under test.

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• Why do I get a blinking screen when running lwjgl?

  - by SystemNetworks

  I didn't have any errors. But When I run my lwjgl game, it gives me a blinking screen. Here is the code: package L1F3; import org.lwjgl.opengl.Display; import org.lwjgl.opengl.DisplayMode; import org.lwjgl.LWJGLException; import static org.lwjgl.opengl.GL11.*; public class Main { public static void main(String[] args) { try { Display.setDisplayMode(new DisplayMode(640, 480)); Display.setTitle("A fresh display!"); Display.create(); } catch (LWJGLException e) { e.printStackTrace(); Display.destroy(); System.exit(1); } while(!Display.isCloseRequested()) { Display.update(); } Display.destroy(); System.exit(0); } } How do I stop the blinking screen? I was thinking its my framerate. I deleted Display.sync but it still gives me all white and black. Last time it didn't give me a blinking screen. EDIT When I remove Display.update() , it gives me a perfect screen, no blinking or no white. Will my game work without it? I can also close it perfectly.

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• Files in /home deleted

  - by long-time user....2006

  In the most specific, unemotional terms: Reinstalled os, using 11.10(1 month after release to skip initial issues that usually crop up). Configured system to my specifications(just ways of organizing config files, etc). Log out Log back in after after an hour or so...to find my home directory obliterated and just a few skeleton files existing. think oh well, try again (this has happened before with an install for reasons I've never been able to pinpoint, usually around install time with some sort of update but its never been a major recurring issue) same thing happens I thought something was awry, so I reinstalled again (another 20 minutes, meh) Set up system, arranged home directory a bit differently thinking maybe I tread on something I shouldn't have. log out, come back --- the same thing. Most of the directories I added were deleted (e.g. .xmonad which links to xmonad.hs in my portable config directory) tl;dr every change I make in my home directory gets deleted. The emotional part: UNACCEPTABLE. I need to configure my system the way I want, not get punched in the face everytime I make a change. I'll willingly fill in details as needed, this was just a start to see if anyone can help, I've found no trace of this issue in a search.

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• Unexpected start of already-primary server processes when heartbeat on secondary is stopped.

  - by vorik

  Hi, I've got an active-passive Heartbeat cluster with Apache, MySQL, ActiveMQ and DRBD. Today, I wanted to perform hardware-maintenance on the secondary node (node04), so I stopped the heartbeat service before shutting it down. Then, the primary node (node03) received a shutdown notice from the secondary node (node04). This logging comes from the primary node: node03 heartbeat[4458]: 2010/03/08_08:52:56 info: Received shutdown notice from 'node04.companydomain.nl'. heartbeat[4458]: 2010/03/08_08:52:56 info: Resources being acquired from node04.companydomain.nl. harc[27522]: 2010/03/08_08:52:56 info: Running /etc/ha.d/rc.d/status status heartbeat[27523]: 2010/03/08_08:52:56 info: Local Resource acquisition completed. mach_down[27567]: 2010/03/08_08:52:56 info: /usr/share/heartbeat/mach_down: nice_failback: foreign resources acquired mach_down[27567]: 2010/03/08_08:52:56 info: mach_down takeover complete for node node04.companydomain.nl. heartbeat[4458]: 2010/03/08_08:52:56 info: mach_down takeover complete. harc[27620]: 2010/03/08_08:52:56 info: Running /etc/ha.d/rc.d/ip-request-resp ip-request-resp ip-request-resp[27620]: 2010/03/08_08:52:56 received ip-request-resp drbddisk OK yes ResourceManager[27645]: 2010/03/08_08:52:56 info: Acquiring resource group: node03.companydomain.nl drbddisk Filesystem::/dev/drbd0::/data::ext3 mysql apache::/etc/httpd/conf/httpd.conf LVSSyncDaemonSwap::master monitor activemq tivoli-cluster MailTo::[email protected]::DRBDFailureDrisAcc MailTo::[email protected]::DRBDFailureDrisAcc 1.2.3.212 ResourceManager[27645]: 2010/03/08_08:52:56 info: Running /etc/ha.d/resource.d/drbddisk start Filesystem[27700]: 2010/03/08_08:52:57 INFO: Running OK ResourceManager[27645]: 2010/03/08_08:52:57 info: Running /etc/ha.d/resource.d/mysql start mysql[27783]: 2010/03/08_08:52:57 Starting MySQL[ OK ] apache[27853]: 2010/03/08_08:52:57 INFO: Running OK ResourceManager[27645]: 2010/03/08_08:52:57 info: Running /etc/ha.d/resource.d/monitor start monitor[28160]: 2010/03/08_08:52:58 ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/activemq start activemq[28210]: 2010/03/08_08:52:58 Starting ActiveMQ Broker... ActiveMQ Broker is already running. ResourceManager[27645]: 2010/03/08_08:52:58 ERROR: Return code 1 from /etc/ha.d/resource.d/activemq ResourceManager[27645]: 2010/03/08_08:52:58 CRIT: Giving up resources due to failure of activemq ResourceManager[27645]: 2010/03/08_08:52:58 info: Releasing resource group: node03.companydomain.nl drbddisk Filesystem::/dev/drbd0::/data::ext3 mysql apache::/etc/httpd/conf/httpd.conf LVSSyncDaemonSwap::master monitor activemq tivoli-cluster MailTo::[email protected]::DRBDFailureDrisAcc MailTo::[email protected]::DRBDFailureDrisAcc 1.2.3.212 ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/IPaddr 1.2.3.212 stop IPaddr[28329]: 2010/03/08_08:52:58 INFO: ifconfig eth0:0 down IPaddr[28312]: 2010/03/08_08:52:58 INFO: Success ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/MailTo [email protected] DRBDFailureDrisAcc stop MailTo[28378]: 2010/03/08_08:52:58 INFO: Success ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/MailTo [email protected] DRBDFailureDrisAcc stop MailTo[28433]: 2010/03/08_08:52:58 INFO: Success ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/tivoli-cluster stop ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/activemq stop activemq[28503]: 2010/03/08_08:53:01 Stopping ActiveMQ Broker... Stopped ActiveMQ Broker. ResourceManager[27645]: 2010/03/08_08:53:01 info: Running /etc/ha.d/resource.d/monitor stop monitor[28681]: 2010/03/08_08:53:01 ResourceManager[27645]: 2010/03/08_08:53:01 info: Running /etc/ha.d/resource.d/LVSSyncDaemonSwap master stop LVSSyncDaemonSwap[28714]: 2010/03/08_08:53:02 info: ipvs_syncmaster down LVSSyncDaemonSwap[28714]: 2010/03/08_08:53:02 info: ipvs_syncbackup up LVSSyncDaemonSwap[28714]: 2010/03/08_08:53:02 info: ipvs_syncmaster released ResourceManager[27645]: 2010/03/08_08:53:02 info: Running /etc/ha.d/resource.d/apache /etc/httpd/conf/httpd.conf stop apache[28782]: 2010/03/08_08:53:03 INFO: Killing apache PID 18390 apache[28782]: 2010/03/08_08:53:03 INFO: apache stopped. apache[28771]: 2010/03/08_08:53:03 INFO: Success ResourceManager[27645]: 2010/03/08_08:53:03 info: Running /etc/ha.d/resource.d/mysql stop mysql[28851]: 2010/03/08_08:53:24 Shutting down MySQL.....................[ OK ] ResourceManager[27645]: 2010/03/08_08:53:24 info: Running /etc/ha.d/resource.d/Filesystem /dev/drbd0 /data ext3 stop Filesystem[29010]: 2010/03/08_08:53:25 INFO: Running stop for /dev/drbd0 on /data Filesystem[29010]: 2010/03/08_08:53:25 INFO: Trying to unmount /data Filesystem[29010]: 2010/03/08_08:53:25 ERROR: Couldn't unmount /data; trying cleanup with SIGTERM Filesystem[29010]: 2010/03/08_08:53:25 INFO: Some processes on /data were signalled Filesystem[29010]: 2010/03/08_08:53:27 INFO: unmounted /data successfully Filesystem[28999]: 2010/03/08_08:53:27 INFO: Success ResourceManager[27645]: 2010/03/08_08:53:27 info: Running /etc/ha.d/resource.d/drbddisk stop heartbeat[4458]: 2010/03/08_08:53:29 WARN: node node04.companydomain.nl: is dead heartbeat[4458]: 2010/03/08_08:53:29 info: Dead node node04.companydomain.nl gave up resources. heartbeat[4458]: 2010/03/08_08:53:29 info: Link node04.companydomain.nl:eth0 dead. heartbeat[4458]: 2010/03/08_08:53:29 info: Link node04.companydomain.nl:eth1 dead. hb_standby[29193]: 2010/03/08_08:53:57 Going standby [foreign]. heartbeat[4458]: 2010/03/08_08:53:57 info: node03.companydomain.nl wants to go standby [foreign] Soo... What just happened here??? Heartbeat on node04 stopped and told node03, which was the active node at the time. Somehow, node03 decided to start the cluster processes that were already running. (For the processes that are not critical, I always return a 0 from the startupscript so it does not stops the entire cluster when a non-essential part fails.) When starting ActiveMQ, it returns status 1 because it is already running. This fails the node and shuts everything down. As heartbeat is not running on the secondary node, it cannot failover to there. When I tried to run ha_takeover to restart the resources, absolutely nothing happened. Only after I restarted heartbeat on the primary node the resources could be started (after a delay of 2 minutes). These are my questions: Why does heartbeat on the primary node try to start the cluster processes again? Why did ha_takeover not work? What can I do to prevent this from happening? Server configuration: DRBD: version: 8.3.7 (api:88/proto:86-91) GIT-hash: ea9e28dbff98e331a62bcbcc63a6135808fe2917 build by [email protected], 2010-01-20 09:14:48 0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate B r---- ns:0 nr:6459432 dw:6459432 dr:0 al:0 bm:301 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0 uname -a Linux node04 2.6.18-164.11.1.el5 #1 SMP Wed Jan 6 13:26:04 EST 2010 x86_64 x86_64 x86_64 GNU/Linux haresources node03.companydomain.nl \ drbddisk \ Filesystem::/dev/drbd0::/data::ext3 \ mysql \ apache::/etc/httpd/conf/httpd.conf \ LVSSyncDaemonSwap::master \ monitor \ activemq \ tivoli-cluster \ MailTo::[email protected]::DRBDFailureDrisAcc \ MailTo::[email protected]::DRBDFailureDrisAcc \ 1.2.3.212 ha.cf debugfile /var/log/ha-debug logfile /var/log/ha-log keepalive 500ms deadtime 30 warntime 10 initdead 120 udpport 694 mcast eth0 225.0.0.3 694 1 0 mcast eth1 225.0.0.4 694 1 0 auto_failback off node node03.companydomain.nl node node04.companydomain.nl respawn hacluster /usr/lib64/heartbeat/dopd apiauth dopd gid=haclient uid=hacluster Thank you very much in advance, Ger Apeldoorn

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• Non perdere la possibilità di incontrare i membri dell’Oracle Real-Time Decisions Customer Advisory Board!

  - by Silvia Valgoi

  Quest’anno, in via del tutto eccezionale, vengono aperte le porte dell’appuntamento annuale che Oracle dedica ai clienti di alcune specifiche Applicazioni: si incontreranno a Roma il prossimo 20 giugno 2012  i clienti mondiali della soluzione Oracle Real-Time Decisions (RTD). E’ una occasione unica per sentire direttamente da chi ha implementato questa soluzione quali siano stati i reali ritorni sugli investimenti e per parlare direttamente con loro in un contesto internazionale. La testimonianza di  Dell - che presenterà l’utilizzo di RTD  integrato anche a Siebel - la partecipazione di  BT, Deutsch Telecom, United Airlines, Bouygues Telecom, Dell e RoomKe, fanno di questo appuntamento un momento importante per tutti coloro che vedono nel Real-Time Decisions un tassello importante per le loro strategie di Customer Experience Management. Sei interessato? http://www.oracle.com/goto/RealTimeDecisions

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• Software development books are useful, but when to find the time to read them?

  - by user5396

  I have 5 books in my "read-wish-list". When do I read them? I mean I could force myself to use 1 hour during working hours, but this will last for 2 days then someone will ask me to do more "high priority things". One option can be reading at night, but also this has limits, even because I prefer to spend time with kids. Could you please share your experiences? A long term plan is needed of course, it makes no sense to read 5 books in a week, but to continuously read something. For this reason it must not be a stressful thing. It should be easy. It must not be a struggle to find time to read, but it should be done on a continuous regular basis. Somehow this question can be similar to THIS ONE but I want to ask about books. How many if you read books at work for self improvement, not to tackle a specific task?

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• how to do automatic backup of running vmware virtual machine?

  - by Radek

  I want to do regular automatic backup of my vmware virtual machine (16GB big, Windows XP) that is running I do not have an access to ESX admin. I can ask our admin to set up something in the admin area but I do not have access for myself. I have installed few programs that are important to me so I want to have working backup at any point of time. Note: I know I can copy all the files when the virtual machine is not up and running.

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• Auto DOP and Concurrency

  - by jean-pierre.dijcks

  After spending some time in the cloud, I figured it is time to come down to earth and start discussing some of the new Auto DOP features some more. As Database Machines (the v2 machine runs Oracle Database 11.2) are effectively selling like hotcakes, it makes some sense to talk about the new parallel features in more detail. For basic understanding make sure you have read the initial post. The focus there is on Auto DOP and queuing, which is to some extend the focus here. But now I want to discuss the concurrency a little and explain some of the relevant parameters and their impact, specifically in a situation with concurrency on the system. The goal of Auto DOP The idea behind calculating the Automatic Degree of Parallelism is to find the highest possible DOP (ideal DOP) that still scales. In other words, if we were to increase the DOP even more  above a certain DOP we would see a tailing off of the performance curve and the resource cost / performance would become less optimal. Therefore the ideal DOP is the best resource/performance point for that statement. The goal of Queuing On a normal production system we should see statements running concurrently. On a Database Machine we typically see high concurrency rates, so we need to find a way to deal with both high DOP’s and high concurrency. Queuing is intended to make sure we Don’t throttle down a DOP because other statements are running on the system Stay within the physical limits of a system’s processing power Instead of making statements go at a lower DOP we queue them to make sure they will get all the resources they want to run efficiently without trashing the system. The theory – and hopefully – practice is that by giving a statement the optimal DOP the sum of all statements runs faster with queuing than without queuing. Increasing the Number of Potential Parallel Statements To determine how many statements we will consider running in parallel a single parameter should be looked at. That parameter is called PARALLEL_MIN_TIME_THRESHOLD. The default value is set to 10 seconds. So far there is nothing new here…, but do realize that anything serial (e.g. that stays under the threshold) goes straight into processing as is not considered in the rest of this post. Now, if you have a system where you have two groups of queries, serial short running and potentially parallel long running ones, you may want to worry only about the long running ones with this parallel statement threshold. As an example, lets assume the short running stuff runs on average between 1 and 15 seconds in serial (and the business is quite happy with that). The long running stuff is in the realm of 1 – 5 minutes. It might be a good choice to set the threshold to somewhere north of 30 seconds. That way the short running queries all run serial as they do today (if it ain’t broken, don’t fix it) and allows the long running ones to be evaluated for (higher degrees of) parallelism. This makes sense because the longer running ones are (at least in theory) more interesting to unleash a parallel processing model on and the benefits of running these in parallel are much more significant (again, that is mostly the case). Setting a Maximum DOP for a Statement Now that you know how to control how many of your statements are considered to run in parallel, lets talk about the specific degree of any given statement that will be evaluated. As the initial post describes this is controlled by PARALLEL_DEGREE_LIMIT. This parameter controls the degree on the entire cluster and by default it is CPU (meaning it equals Default DOP). For the sake of an example, let’s say our Default DOP is 32. Looking at our 5 minute queries from the previous paragraph, the limit to 32 means that none of the statements that are evaluated for Auto DOP ever runs at more than DOP of 32. Concurrently Running a High DOP A basic assumption about running high DOP statements at high concurrency is that you at some point in time (and this is true on any parallel processing platform!) will run into a resource limitation. And yes, you can then buy more hardware (e.g. expand the Database Machine in Oracle’s case), but that is not the point of this post… The goal is to find a balance between the highest possible DOP for each statement and the number of statements running concurrently, but with an emphasis on running each statement at that highest efficiency DOP. The PARALLEL_SERVER_TARGET parameter is the all important concurrency slider here. Setting this parameter to a higher number means more statements get to run at their maximum parallel degree before queuing kicks in.  PARALLEL_SERVER_TARGET is set per instance (so needs to be set to the same value on all 8 nodes in a full rack Database Machine). Just as a side note, this parameter is set in processes, not in DOP, which equates to 4* Default DOP (2 processes for a DOP, default value is 2 * Default DOP, hence a default of 4 * Default DOP). Let’s say we have PARALLEL_SERVER_TARGET set to 128. With our limit set to 32 (the default) we are able to run 4 statements concurrently at the highest DOP possible on this system before we start queuing. If these 4 statements are running, any next statement will be queued. To run a system at high concurrency the PARALLEL_SERVER_TARGET should be raised from its default to be much closer (start with 60% or so) to PARALLEL_MAX_SERVERS. By using both PARALLEL_SERVER_TARGET and PARALLEL_DEGREE_LIMIT you can control easily how many statements run concurrently at good DOPs without excessive queuing. Because each workload is a little different, it makes sense to plan ahead and look at these parameters and set these based on your requirements.

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• Is dual-booting an OS more or less secure than running a virtual machine?

  - by Mark

  I run two operating systems on two separate disk partitions on the same physical machine (a modern MacBook Pro). In order to isolate them from each other, I've taken the following steps: Configured /etc/fstab with ro,noauto (read-only, no auto-mount) Fully encrypted each partition with a separate encryption key (committed to memory) Let's assume that a virus infects my first partition unbeknownst to me. I log out of the first partition (which encrypts the volume), and then turn off the machine to clear the RAM. I then un-encrypt and boot into the second partition. Can I be reasonably confident that the virus has not / cannot infect both partitions, or am I playing with fire here? I realize that MBPs don't ship with a TPM, so a boot-loader infection going unnoticed is still a theoretical possibility. However, this risk seems about equal to the risk of the VMWare/VirtualBox Hypervisor being exploited when running a guest OS, especially since the MBP line uses UEFI instead of BIOS. This leads to my question: is the dual-partitioning approach outlined above more or less secure than using a Virtual Machine for isolation of services? Would that change if my computer had a TPM installed? Background: Note that I am of course taking all the usual additional precautions, such as checking for OS software updates daily, not logging in as an Admin user unless absolutely necessary, running real-time antivirus programs on both partitions, running a host-based firewall, monitoring outgoing network connections, etc. My question is really a public check to see if I'm overlooking anything here and try to figure out if my dual-boot scheme actually is more secure than the Virtual Machine route. Most importantly, I'm just looking to learn more about security issues. EDIT #1: As pointed out in the comments, the scenario is a bit on the paranoid side for my particular use-case. But think about people who may be in corporate or government settings and are considering using a Virtual Machine to run services or applications that are considered "high risk". Are they better off using a VM or a dual-boot scenario as I outlined? An answer that effectively weighs any pros/cons to that trade-off is what I'm really looking for in an answer to this post. EDIT #2: This question was partially fueled by debate about whether a Virtual Machine actually protects a host OS at all. Personally, I think it does, but consider this quote from Theo de Raadt on the OpenBSD mailing list: x86 virtualization is about basically placing another nearly full kernel, full of new bugs, on top of a nasty x86 architecture which barely has correct page protection. Then running your operating system on the other side of this brand new pile of shit. You are absolutely deluded, if not stupid, if you think that a worldwide collection of software engineers who can't write operating systems or applications without security holes, can then turn around and suddenly write virtualization layers without security holes. -http://kerneltrap.org/OpenBSD/Virtualization_Security By quoting Theo's argument, I'm not endorsing it. I'm simply pointing out that there are multiple perspectives here, so I'm trying to find out more about the issue.

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