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• set service dependency on internet connection

  - by nccsbim071

  Hi, I have created a window service and set some dependencies like on MSMQ, MSSQLSERVER and so. Everything is working nice. but i need to send another dependency for my service. That is on internet connection. My service is responsible for sending emails. As soon my server starts, my service starts too and it finds if there is anything to send, if there is, it starts to send email, if during sending it is not able to connect to the internet it cannot send email. so i guess i should set my service dependency on internet connection too. I already set my window service dependency to MicrosoftSQL Server and Microsoft Message Queuing by editing the registry value. by adding new multi string value named "DependOnService", Type "REG_MULTI_SZ" and space separated names of the services that my service depends upon for the Data. For Microsoft SQL Server i set the value to "MSSQLSERVER" but i don't know the name of the internet service that i need to set dependency upon. how can i do this, any help please Thanks

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• Suddenly getting lock timeouts with MySQL

  - by Marc Hughes

  We've got a web app hosted on Amazon Web services. Our database is a multi-az RDS MySQL server running 5.1.57 and 3-4 app servers talk to it. Today, we started seeing a lot of errors along the lines of "Lock wait timeout exceeded; try restarting transaction" - almost 1% of POST requests are seeing this. There have been no modifications to the code running on the site. There have been no schema changes. We haven't had a big spike in traffic. I've been looking at the processes running, and none seem out of control. I tried scaling our RDS instance from a small to a large, with no effect. Two days ago, Amazon had some outages. As part of the recovery from that, our RDS server, and our app servers ended up in different availability zones, but all within the same region. But yesterday, everything was fine so I'm not convinced that's related. The lock timeouts are in different types of requests and occur in different InnoDB tables. I have noticed the number of open connections jumped when we started seeing problems, but they may be a symptom and not a cause. What are my next steps in debugging this?

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• How can I get Windows 8 to automatically disable touch when I am using my Wacom pen and turn it back on when I am not

  - by Robert

  I have an HP convertible tablet computer which I just upgraded to Windows 8. The problem (which existed under Windows 7 as well) is that this tablet has both a capacitive touch screen (with multi-touch) AND a wacom-type tablet built in to the screen that works using electro-magnetic resonance with the provided stylus. My Use Case: Most of the time I am happy using my fingers and the touch interface for navigation and whatnot. However, when I want to get down to serious note-taking/drawing, I want to use the wacom functionality. The problem is that any comfortable writing position has me resting my arm/hand on the screen, which activates the touch technology (despite supposed palm-detection algorithms) and completely screws up my input paradigm. My Ideal Solution: Ideallly, since wacom technology senses when the pen is "close" to the screen, I would love to have touch be automatically disabled whenever the wacom pen is detected, and turned back on when it is out of range. this would allow me to seamless switch between the two input methods, and since I NEVER want to use both at once would work perfectly for me. An acceptable alternative: As a next best option, It would be great to be able to turn off the touch functionality (leaving the wacom in place) whenever I entered specific apps (e.g. OneNote, Photoshop, Gimp, Pencil, etc.) and then have it turn back on when I left that app.... As a worst case at least lets me use my PC option: If I could create a shortcut (tile or otherwise) that flips the touch on and off without going all the way through the nested computer settings, that would be better than nothing. Thanks in advance for the help with 1 or more of the above.

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• external drive and CentOS - Reset high speed USB device number

  - by Phil

  I have 2 external drives (3TB) and both will not work with my centOS Box. Tested them in windows ( different machine ) No problems ( 2.6.32-279.9.1.el6.i686 ) dmesg reports: usb 2-2: new high speed USB device number 3 using ehci_hcd usb 2-2: New USB device found, idVendor=2109, idProduct=0700 usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 2-2: Product: USB 3.0 SATA Bridge usb 2-2: Manufacturer: VIA Labs, Inc. usb 2-2: SerialNumber: 0000000000006121 usb 2-2: configuration #1 chosen from 1 choice scsi6 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning usb-storage: device scan complete scsi 6:0:0:0: Direct-Access ST3000DM 001-9YN166 CC4B PQ: 0 ANSI: 2 sd 6:0:0:0: Attached scsi generic sg3 type 0 sd 6:0:0:0: [sdd] Very big device. Trying to use READ CAPACITY(16). sd 6:0:0:0: [sdd] 5860533165 512-byte logical blocks: (3.00 TB/2.72 TiB) sd 6:0:0:0: [sdd] Write Protect is off sd 6:0:0:0: [sdd] Mode Sense: 00 06 00 00 sd 6:0:0:0: [sdd] Assuming drive cache: write through sd 6:0:0:0: [sdd] Very big device. Trying to use READ CAPACITY(16). sd 6:0:0:0: [sdd] Assuming drive cache: write through sdd: sdd1 sd 6:0:0:0: [sdd] Very big device. Trying to use READ CAPACITY(16). sd 6:0:0:0: [sdd] Assuming drive cache: write through sd 6:0:0:0: [sdd] Attached SCSI disk Tyring to use cfdisk / fdisk / gdisk or even fdisk -l results in the program hanging and dmesg reports: usb 2-2: reset high speed USB device number 3 using ehci_hcd usb 2-2: reset high speed USB device number 3 using ehci_hcd usb 2-2: reset high speed USB device number 3 using ehci_hcd I have the same 2 drives physically installed in the computer via SATA Any Ideas?

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• which vista services can be disabled with impunity?

  - by GwenKillerby

  I use Vista on a HP pavilion DV2 laptop. When I look through all the services my laptop starts, it really seems there's way too much of it. I multi boot with XP and 7. Both startup in 40 seconds. Vista takes four minutes. Is there some software that can determine which services I don't need? On 7, there's no propietary HP stuff at all, yet it seems to run fine. Because all these service, there's a LOT of them and some just sit there doing nothing, monitoring for updates I don't really need or want or need to know about the second they're available. my laptop is the only computer i use at home, there's no home network, aside from the modem-router, which is cabled, not wifi. Take for instance Parental controls, and stuff for people with bad eyesight, Tablet PC. I really never use any of that stuff. Hope this question is specific enough. I've looked at the other questions but they didn't answer me. thanks, Gwen.

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• How can the route between two private IPs go via public IPs?

  - by Gilles

  I'm trying to understand what this output from traceroute means. I changed the IP addresses for privacy but retained the public/private IP range distinction. traceroute.db -e -n 10.1.1.9 traceroute to (10.1.1.9), 30 hops max, 60 byte packets 1 10.0.0.1 0.596 ms 0.588 ms 0.577 ms 2 10.0.0.2 1.032 ms 1.029 ms 1.084 ms 3 10.0.0.3 3.360 ms 3.355 ms 3.338 ms 4 23.0.0.4 3.974 ms 4.592 ms 4.584 ms 5 23.0.0.5 13.442 ms 13.445 ms 13.434 ms 6 45.0.0.6 13.195 ms 12.924 ms 12.913 ms 7 67.0.0.7 52.088 ms 51.683 ms 52.040 ms 8 10.1.1.8 46.878 ms 44.575 ms 44.815 ms 9 10.1.1.9 45.932 ms 45.603 ms 45.593 ms The first 10.0.* range is inside my organisation. The last 10.1.* range is another site of my organisation. The intermediate addresses belong to various ISPs. I expect that there is some kind of VPN between the two sites, but I don't know much about our network topology. What I don't understand is how the route can go from a private address through public addresses back into private addresses. Searching led me to Public IPs on MPLS Traceroute, which gives a possible explanation: MPLS. Is MPLS the only possible or most likely explanation? Otherwise what does this tell me about our network infrastructure? Bonus question for my edification: in this scenario, who is generating the ICMP TTL exceeded packets and if relevant mangling their source and destination addresses?

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• Looking for a real DisplayPort hub/splitter

  - by squircle

  In my search for a new display, I came across the Dell Multi-Monitor Hub MMH11, which seemed to be an alternative to my search for daisy-chainable DisplayPort displays. However, before I cave and spend $179 on this device, I am wondering if this will be similar to other splitting devices where it appears to the computer as one big monitor and the device does the splitting (which I don't want). Or, does this use the packet-based nature of DisplayPort to present two/three separate displays to the computer? Also, would this device work on my MacBook Pro? (I know the Dell site says it's for Windows, but it also says that no driver installation is required. I'd assume since the MBP supports DP 1.2 it would work, but it's better to ask). Thanks! Edit: I've checked out the similar-looking Cirago DisplayPort splitter, but I have extreme doubts as to whether or not it's a genuine displayport splitter, or just another monitor-conglomerate. Their DVI solution looks identical to Dell's, which I'm pretty sure won't do what I want. I also don't want to order this DisplayPort "hub" and find that it doesn't do what I want it to.

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• Creating a bootable USB drive from a distro split over two DVD ISOs

  - by Kev

  I am searching and not finding the right way to do this. Please note, I don't think I'm trying for anything strange here. I just want to make a bootable USB stick of a single OS that happens to be larger than one DVD and happens to be larger than FAT32 will allow for in a single file. On our slow connection I spent a long time downloading CentOS 5.9's two DVD ISOs: CentOS-5.9-x86_64-bin-DVD-1of2.iso (4.4 GB) CentOS-5.9-x86_64-bin-DVD-2of2.iso (718 MB) I have a USB stick that I want to somehow get these two ISOs on. Since the first one is 4.4 GB, I can't use ISO2USB because it insists on FAT32. I cannot find an alternative that lets you specify more than one ISO image--of the same distro, I'm not trying for some fancy multi-boot thing--to put on the same stick. I guess I should have downloaded the CD ISOs, but I thought I was "saving time" because then I wouldn't have as many files to run through the md5 checker. There's no IMG file of the whole thing (only a net install version, which I don't want--I want to pre-download everything) otherwise I would've gone for that. So, given that I have these two DVD ISOs, how can I get them on a stick that will boot and make use of both of them properly to install CentOS somewhere? Again, I don't think this is anything out of the ordinary, yet I can't find software/docs that seem to support this. Am I stuck re-downloading everything in CD-sized ISOs just to do this? I found this, but it doesn't run on Windows. I am using Windows to prepare the stick.

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• Why am I seeing Zero errors in non-ECC RAM?

  - by Alexander Shcheblikin

  According to sources, memory errors are a very probable event: Some say the probability of a DRAM error is 95% in just 3 days of operation of a computer with just 4 GB of RAM, others say 32% of servers experience at least one error in a month with 8% of DIMMs being at fault. Contrary to those horrors, in my more than 10 years of personal computers use I have seen exactly none of the memory errors. I admit I never paid special attention to the subject. However, I have ventured multi-hour memtest86 runs couple of times and never seen an error either. Some of the factors that IMO should aggravate the memory problems: I build my computers out of the most "bulk commodity" parts: mainstream budget motherboards and the next to cheapest memory. also I usually max out the technology available, e.g. in the times of 32 bit OS'es I used 4 GB of RAM and with the current desktop CPUs and the newer 64 bit OS'es I use 32 GB of RAM. memory usage is moderately heavy with lots of virtual machines up running small and big tasks 24/7/365. But nevertheless, no memory-related problems ever found! How's that?

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• What's going on with traceroute?

  - by Kevin

  The following is what happens when I run traceroute from a certain location: # traceroute google.com traceroute to google.com (74.125.227.39), 30 hops max, 60 byte packets 1 gateway.local.enactpc.com (10.0.0.1) 0.138 ms 0.101 ms 0.084 ms 2 * * * 3 * * * 4 * * * 5 * * * 6 * * * 7 * * * 8 * * * 9 * * * 10 * * * 11 * * * 12 * * * 13 * * * 14 * * * 15 * * * 16 * * * 17 * * * 18 * * * 19 * * * 20 * * * 21 * * * 22 * * * 23 * * * 24 * * * 25 * * * 26 * * * 27 * * * 28 * * * 29 * * * 30 * * * Absolutely nothing of interest... Now, originally I thought this was just a fact of the location's network set up. (I assume they block pings or something...) However, watch what happens when I use nmap to run a traceroute... # nmap -sP --traceroute google.com Starting Nmap 5.21 ( http://nmap.org ) at 2012-09-25 22:18 CDT Nmap scan report for google.com (74.125.227.40) Host is up (0.034s latency). Hostname google.com resolves to 11 IPs. Only scanned 74.125.227.40 rDNS record for 74.125.227.40: dfw06s06-in-f8.1e100.net TRACEROUTE (using proto 1/icmp) HOP RTT ADDRESS 1 0.19 ms gateway.local.enactpc.com (10.0.0.1) 2 1.93 ms 99-20-92-1.lightspeed.austtx.sbcglobal.net (99.20.92.1) 3 25.61 ms 99-20-92-2.lightspeed.austtx.sbcglobal.net (99.20.92.2) 4 ... 6 7 23.68 ms 12.83.68.137 8 31.30 ms gar23.dlstx.ip.att.net (12.122.85.73) 9 ... 10 31.82 ms 72.14.233.65 11 32.27 ms 209.85.250.77 12 32.98 ms dfw06s06-in-f8.1e100.net (74.125.227.40) Nmap done: 1 IP address (1 host up) scanned in 3.29 seconds When using nmap I get A LOT more results than with traceroute, why? Note, I checked, and the difference in target IP addresses is not related...

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• How to make gpg2 flush the stream?

  - by Vi

  I want to get some slowly flowing data saved in encrypted form at the device which can be turned off abruptly. But gpg2 seems to not to flush it's output frequently and I get broken files when I try to read such truncated file. vi@vi-notebook:~$ cat asdkfgmafl asdkfgmafl ggggg ggggg 2342 2342 cat behaves normally. I see the output right after input. vi@vi-notebook:~$ gpg2 -er _Vi --batch ?pE??x...(more binary data here)....???-??.... asdfsadf 22223 sdfsdfasf Still no data... Still no output... ^C gpg: signal Interrupt caught ... exiting vi@vi-notebook:~$ gpg2 -er _Vi --batch /tmp/qqq skdmfasldf gkvmdfwwerwer zfzdfdsfl ^\ gpg: signal Quit caught ... exiting Quit vi@vi-notebook:~$ gpg2 " 2048-bit ELG key, ID 78F446CA, created 2008-01-06 (main key ID 1735A052) gpg: [don't know]: 1st length byte missing vi@vi-notebook:~$ # Where is my "skdmfasldf" How to make gpg2 to handle such case? I want it to put enough output to reconstruct each incoming chunk of input. (Also fsyncing after each output can be benefitial as an additional option). Should I use other tool (I need pubkey encryption).

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• Removing extended partition without deleting logical in it

  - by HisDudeness

  I'm running a Linux-based laptop, and in order to multi-boot several distros in it, I created an extended partition which contains a bunch of logical ones with GParted. Now, after quite a long time with this setup, I've changed my mind because of the consequent lack of storing space for my data partition. Now I want to keep one distro alone like it's normal, and eventually have some other operating systems stored in external supports to plug in and use if I want. Obviously, also this partition I want to keep (and to enlarge a little too) is just a logical inside the extended I want to keep. For what concerns the number I'm ok, meaning I currently have this big distro dedicated extended, the swap and the data partitions, so there's space for another primary before I delete the extended, but I don't know how to delete it without touching the logical in it, I don't want to reinstall the system losing all changes and settings, and I don't want to keep an extended partition for a logical alone. How can I do? Do I have to create a new primary, copy the logical content in it and then delete everything? Will the system boot and maintain exactly all the features it has now? Or is there a way to convert an extended into a primary once it contains just one logical? Or can I directly move a logical out of an extended turning it into a primary? Or, again, am I screwed?

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• Formula-based Excel page headers

  - by Jake Krohn

  I'm using the "Rows to repeat at top" function in Excel's "Page Setup" dialog to ensure that a multi-row header block appears on every printed page of my worksheet. However, I'd like to be able to change certain bits of the header based on the content of the current page. I would simply like to display the value of one cell in the first row that is printed on the page. If this is my header: Section: xx And the data looks like this (columns are Section and Name): 1 Foo 1 Bar 2 Baz I want the "xx" in the header to be "1". If, further down on the next page, the value in the Section column is "3", I want that printed in the header of the next page. I originally thought that using the "OFFSET" function might help, e.g. ="Section: "&OFFSET(A2, 1, 0) But it only shows the offset from the original placement of the header, thus only working on page 1. The end document is a PDF, so right now I'm able to go back in with the "TouchUp Text Tool" in Acrobat and add the numbers page by page. But it gets to be a tedious process with 70+ page reports. Anyone have any better ideas that don't require me mucking up the original Excel document with inserted headers every N lines? This is Excel 2008 for Mac, if it makes a difference.

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• After adding skip-innodb mysql doesn't start

  - by Pentium10

  I am trying to setup these values: #skip-bdb #skip-locking #skip-innodb When I add them to /etc/mysql/my.cnf and even if I turn ON of of, them after I do the service restart mysql fails to start, and no error message printed. sudo service mysql restart [ ok ] Stopping MySQL database server: mysqld. [FAIL] Starting MySQL database server: mysqld . . . . . . . . . . . . . . failed! Previously I made sure that I have no InnoDB tables, and all files of that type were removed. I tried looking for error files but I couldn't locate it: /var/log/mysql.err is a 0 byte file /var/log/mysql folder has no files rsyslog was changed in past with inetutils-syslogd, and this might have changed the log files, and it could be the reason why I don't see any error logs, and I am stuck how to look or go forward.

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• Multiheaded X.org with a single workspace-pool

  - by blauwblaatje

  I've got an idea for x.org/$randomwindowmanager in combination with a multiheaded setup, but I haven't figured out how it should work. Also I don't really know where to place the feature request. Now for the idea. I've been working with screen (wikipedia:GNU_Screen) for some years now. One thing I like about it, is the fact that I can get a multi-display mode (screen -x), so you can have multiple terminals all connected to the same screen. The fun thing about it, is that you can get 2 terminals with the same content and switch my onscreen layout, without moving the terminals. I admit, in screen it's not extremely useful, but I think for a wm it can be. Imagine this. You've got two monitors and 4 workdesks. On one workdesk I've got my IDE with code, on the second one I've got the output, on the third one I've got the documentation and on the forth one I've got my e-mail and IM clients. At one moment, I want my IDE and output on my monitors, another moment my code and documentation and Yet another moment my IM to consult a colleague and documentation or code. Finally my colleague comes to help me at my desk. I'd like it if we could both watch the same workdesk without him sitting on my lap, so I turn one monitor so he can see it better. It would be great if we could see the same thing that's on my monitor (exclude mousepointer). The thing with most WMs is that your workspaces on the two monitors are either separated or glued together. If they're separated, you can change workspaces on each monitor autonomous, but you can't exchange applications between monitors because they're different x-clients (iirc). If they're glued together (xinerama), you can exchange the applications, but when changing your workspace, the other monitors change too. So, what I'd like to know is this. Is this already possible or should I submit a feature request somewhere (and if so, where?)

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• Linux kernel - can't access sda16 & sda17

  - by osgx

  I can't access sda16 sda17 and higher partitions from my linux. This linux is rather debian (very old); kernel 2.6.23. So, I know that so old linux kernel can't access 16 partitions on single sata disk. What version of kernel should I use to be able access sda16, sda17 etc? I want to update only a kernel, not a whole Linux distribution. PS. There is an WindowsNT kernel which can access and format 16, 17 or higher partition, but my intention is to use sda16 and sda17 from linux (I want Linux Kernel). PPS: dmesg: sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 sda12 sda13 sda14 sda15 > sd 2:0:0:0: [sda] Attached SCSI disk sd 4:0:0:0: [sdb] xxx 512-byte hardware sectors ... So, there is no mapping of sda16, sda17, ... to sdb. Sdb is the second physical hard drive.

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• Juniper NetScreen NS-5GT traffic monitoring

  - by blah

  I've done casual research into the subject and am truly dismayed at the lack of compatible tools for such a simple task. Maybe someone can provide assistance. We have a NetScreen NS-5GT in the office. I need to be able to get a glance of current traffic per endpoint -- I think the equivalent of 'get sessions' with byte counts/rates. I don't care about bars, graphs, and reports. Something as simple as a classic software firewall display would be perfect. I can't shell out money on something real like SolarWinds products, so a free solution is essential. I'm willing to do a little work but refuse to program something from scratch. It's not prudent right now for me to install a hub or otherwise mess around physically. There must be something out there I can use, maybe in combination. I don't believe I'm asking too much. Specific answers only please, e.g. monitoring software you know will actually work with this antiquated device. I've read about general approaches to the broader problem dozens of times already.

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• Can't get subdomain to point to working collabNet server - what am I doing wrong?

  - by Jared

  Hello everyone, I am running a web server using CollabNet SubVersion EDGE. You can view it at 71.13.105DOT51 I also run another website, http://www.tutorialcraft.com. I went into my Cpanel, and created a DNS record as follows: svn.tutorialcraft.com. 14400 IN A 71.13.105.51 Yet, if you go to http://svn.tutorialcraft.com, it doesn't load. I tested to see if I was doing some wrong, so I created a ebay.tutorialcraft.com and pointed it to eBay servers, and it worked fine (it's not up now). Anyone have any ideas? Thanks UPDATE NOTES: I tried to point svn.tutorialcraft.com to my original IP address (the one that www.tutorialcraft.com is pointed to, and it still won't load. Also, may be worthy of note, I am running a wordpress multi-site server, and I have disabled blog redirection. Here is a sample of my .htaccess as well: RewriteEngine On RewriteCond %{HTTP_HOST} ^tutorialcraft\.com RewriteRule (.*) http://www.tutorialcraft.com/$1 [R=301,L] RewriteBase / RewriteRule ^index\.php$ - [L] # uploaded files RewriteRule ^files/(.+) wp-includes/ms-files.php?file=$1 [L] RewriteCond %{REQUEST_FILENAME} -f [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^ - [L] RewriteRule . index.php [L]

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• Can Octopussy use messages other than syslog style?

  - by Lee Lowder

  I am currently exploring different options for a centralized log server. We use both Linux (Ubuntu 10.04 / 12.04, LTS for both) and Windows, though for this specific issue only Linux is relevant. I like the interface that octopussy has and it's feature list, but I am hesitant due to a few things. One of the biggest concerns I have is that it seems to be syslog only. The end goal is to have a centralized place for our devs and admins to be able to search through the logs generated by Apache, Tomcat and 70+ web apps spread out among a cluster, for both our prod and test environments. While I did see that octopussy has support for plugins, I haven't been able to find any sort of plugin repo or in depth guides as to what can be done with them. Does anyone know if plugins can be used to allow octopussy to non-syslog messages? Specifically log4j type log messages that may include multi-line stack traces and such. Also, is there a user community for this software, such as a mailing list or forum? I've been unable to locate any so far. Thank you.

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• C# sends SQL data 4 times less from one box than from another

  - by Bobb

  W2003, .NET 3.5, SQL 2008 I have prod and UAT app servers deployed in 2 different data centres. I have a C# app which reads text file, parse the text and sends the data to the SQL in bulk. SQL server is in US and the app servers are in London (but in different places). All POPs have dedicated network connections. There is no public internet involved. When the app runs on UAT server I can see in Perfmon that the Send byte/sec is x4 higher than from production server. My estimate is that one server outputs at 1 MB/s and the other at 250 KB/s rate. My suspicion immediately is that there is a router on one of the DCs which shapes traffic or does QoS limitation on traffice from London to US. However support and Windows team and networkig team all are saying that there are no differences in neither networking config on the 2 DCs nor NIC config on the 2 app server... How to find out why is the networking bottlneck is 4 times tighter in one place than in the other? What can I do about it?

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• How to keep subtree removal (`rm -rf`) from starving other processes for Disk I/O?

  - by David Eyk

  We have a very large (multi-GB) Nginx cache directory for a busy site, which we occasionally need to clear all at once. I've solved this in the past by moving the cache folder to a new path, making a new cache folder at the old path, and then rm -rfing the old cache folder. Lately, however, when I need to clear the cache on a busy morning, the I/O from rm -rf is starving my server processes of disk access, as both Nginx and the server it fronts for are read-intensive. I can watch the load average climb while the CPUs sit idle and rm -rf takes 98-99% of Disk IO in iotop. I've tried ionice -c 3 when invoking rm, but it seems to have no appreciable effect on the observed behavior. Is there any way to tame rm -rf to share the disk more? Do I need to use a different technique that will take its cues from ionice? Update: The filesystem in question is an AWS EC2 instance store (the primary disk is EBS). The /etc/fstab entry looks like this: /dev/xvdb /mnt auto defaults,nobootwait,comment=cloudconfig 0 2

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• Can applications use all of the memory in Windows 8?

  - by Barleyman

  Windows 7 (and Windows Vista) have a built-in limit of not being able to use the last 25% of RAM. You will get a low memory warning when you get close to the limit. Even if you disable that warning, applications will run out of memory and crash since the OS will refuse to allocate memory from that last 25%. That was fine when Vista was designed, when machines had 1 GB of total memory, but is pretty daft for today's 8 GB machines. Yes, the system will run cache, etc. on that extra 2 GB, but running out of memory when you have "merely" 2 GB left.... NB: this has nothing to do with the page file. If you limit the page file to a sensible size like 2 GB, you will still see this behavior. The system will cram the page file to the last byte while refusing to touch that 1/4th of the RAM. Does Windows 8 change this behavior? Is there now some fixed minimum free RAM requirement, like 512 MB, or is it still 25%? Can you actually adjust the low memory limit?

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• Creating a Jenkins build farm in a hands-off manner?

  - by user183394

  My colleague and I have set up and run Jenkins on a KVM guest running Ubuntu 12.04 with good results for a while now. We are thinking about deploying a cluster of Jenkins CI hosts in master/slave configuration, with the libvirt slave plugin to keep our hardware count low. Our environment is strictly Linux (CentOS, Scientific Linux, Fedora, and Ubuntu). Both of us are competent in setting up large clusters. We typically use tools like cobbler + a configuration management tool (Puppet, Chef, and alike) to set up a large number of machines (physical and/or virtual) hands off (hundreds of nodes in less than an hour typical). We would like to do the same for nodes running Jenkins. But the step by step guide doesn't give us any clues in this regard. I did see a Multi-slave config plugin. But, being used to dealing with hundreds or more machines completely hands-off, clicking the UI for many machines just doesn't feel right. Can someone point to us a reference that talks about how to set up large cluster of Jenkins CI hosts more in the hands-off way?

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• Discrepancy in file size on disk and ls output

  - by smokinguns

  I have a script that checks for gzipped file sizes greater than 1MB and outputs files along with their sizes as a report. This is the code: myReport=`ls -ltrh "$somePath" | egrep '\.gz$' | awk '{print $9,"=>",$5}'` # Count files that exceed 1MB oversizeFiles=`find "$somePath" -maxdepth 1 -size +1M -iname "*.gz" -print0 | xargs -0 ls -lh | wc -l` if [ $oversizeFiles -eq 0 ];then status="PASS" else status="CHECK FAILED. FOUND FILES GREATER THAN 1MB" fi echo -e $status"\n"$myReport The problem is that ls command outputs the files sizes as 1.0MB in the report but the status is "FAIL" as "$oversizeFiles" variable's value is 2. I checked the file sizes on disk and 2 files are 1.1MB. Why this discrepancy? How should I modify the script so that I can generate an accurate report? BTW, I'm on a Mac. Here is what man page for "find" says on my Mac OSX: -size n[ckMGTP] True if the file's size, rounded up, in 512-byte blocks is n. If n is followed by a c,then the primary is true if the file's size is n bytes (characters). Similarly if n is followed by a scale indicator then the file's size is compared to n scaled as: k kilobytes (1024 bytes) M megabytes (1024 kilobytes) G gigabytes (1024 megabytes) T terabytes (1024 gigabytes) P petabytes (1024 terabytes)

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• Moving a site from IIs6 to IIS7.5

  - by Sukotto

  I need to move a site off of IIS6 (Win Server 2003) and onto IIS7.5 (Win Server 2008) as soon as possible. Preferably tomorrow. The site itself is a delightful mix of classic asp (vbscript) and one-off asp.net (C#) applications (each asp.net app is in its own virtual dir and has a self-contained web.config). In case it's relevant, this is a sort of research site made up of 40 or 50 unconnected microsites. Each microsite is typically a simple form allowing a user to submit a form, which then runs a Stored Proc on a sqlserver db and displays a chart and/or table of the results. There is very little security to worry about. The database connection info is in a central file (in the case of the classic asp) or app's individual web.config (lots of duplication there) To add a little spice to the exercise... I have no idea how to admin IIS The company no longer employs the sysadmin or the guys who set this thing up. (They're not going to employ me much longer either but my sense of professional pride does not permit me to just walk away from this task). The servers are on mutually firewalled networks and I have to perform a convoluted, multi-step process to copy anything from one to the other. Would someone please point me to a crash-course tutorial for accomplishing the above? I have: a complete copy of the site's filesystem on the new box installed the 3rd party charting tool on the new system a config.xml file from the "all tasks - save configuration to a file" right click menu. There doesn't seem to be a way to import it on the new system however. The newer IIS manager has a completely different UI and I'm totally lost. Please help.

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