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  • Can the mysql slow query log show milliseconds?

    - by Chase Seibert
    The mysql slow query log shows query time in whole integers. # Query_time: 0 Lock_time: 0 Rows_sent: 177 Rows_examined: 177 SELECT ... # Query_time: 1 Lock_time: 0 Rows_sent: 56 Rows_examined: 208 SELECT ... There was a microsecond patch to allow mysql to be configured to log queries that take longer than X microseconds to run. But is there a way to have the log output the query time in either milliseconds or microseconds?

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  • Ubuntu Lucid: Erratic screen behaviour after boot

    - by fgysin
    In short: about 50% of the time I have a screwed up monitor setup after reboot. About 50% it is totally correct. Now the longer version: I updated my machine from 9.04 to 10.04 (via 9.10). At first I run into some monitor problems (I have a 3-monitor setup) because of the known bug in the new xserver driver for xinerama. This messes up behaviour if the mouse goes either left or above the screen number 0, i.e. I had to make my left-most monitor screen 0. Everything worked out fine finally, I got my 3-monitor setup back with xinerama enabled to get one big desktop streched over 3 screens. Now the fun part: Every time I start up my machine only one of the 3 monitors gets a signal and is woken up: it only recognizes the left-most monitor (screen 0) and crams all the desktop stuff into this one screen. If I go into nvidia settings I only see one physical device although all 3 are connected and have power. When I look into the xorg.conf I can still see my old setup with 3 devices, 3 screens, xinerama active etc... But I was totally unable to get 3 montitors to work. (I tried unplugging monitors, reconfiguring whole nvidia setup, ...) But it gets even better: When I restart my machine (i.e. choose the restart option from the Ubuntu menu) it shuts down and tries to restart. The restart then gets stuck after showing the Ubuntu splash screen with the 'loading bar' (the moving dots thingy) and I am forced to kill the machine by cutting power. But after the power cut the machine boots up normally and suddenly I get my 3 monitor setup back up working. That is until the next time I shut down and start up, where it all starts over again and I only have one monitor... (see above) I really have a hard time seeing where the error is. It must be that the restart boot somehow differs from the 'normal' boot. But the fact that it gets stuck and I need to cut power which then basically triggers a 'normal' boot does not really support this theory... My setup (please tell me if you need further info): 3 monitors as 3 screens as one desktop (with xinerama) 2 nvidia cards where screen 0 and 1 are on card 0 and screen 2 is on card 1 Ubuntu 10.04 Lucid Lynx (updated from 9.10, 9.04, ....) I would appreciate every idea on the subject, at the moment I really don't have any clue what to do...

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  • Hot-swap drive got new name, can I change it on-the-fly?

    - by T.J. Crowder
    One of the HDDs in my server's RAID config failed, so I took it out of the array and had the data center hot-swap it. They've done that, but now the new drive is /dev/sdc rather than /dev/sda. I suspect — correct me if I'm wrong — that if I reboot the server, it will be /dev/sda again, so I'm hesitant to add it back to the array as /dev/sdc because I don't want to lay a trap for myself to fall into on the next reboot. I'd just as soon not reboot the server if I don't need to (if I do need to, well, too bad for me). Is there a way I can change the device name from /dev/sdc to /dev/sda without rebooting? This is on Ubuntu 10.04 LTS. It's an md array ("Linux Software RAID"), where currently one of the devices (there are a couple of them) looks like this ("degraded" because I've removed the old /dev/sda from it): # mdadm --detail /dev/md0 /dev/md0: Version : 00.90.03 Creation Time : Sun Oct 11 21:07:54 2009 Raid Level : raid1 Array Size : 97536 (95.27 MiB 99.88 MB) Used Dev Size : 97536 (95.27 MiB 99.88 MB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Thu Jun 30 09:31:16 2011 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 UUID : 496be7a5:ab9177ed:7792c71e:7dc17aa4 Events : 0.112 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 0 0 1 removed Thanks, Update: Reading through the kernel md documentation, I suspect that if the name changes on reboot, it won't matter. (Good design, that.) Here's why: Boot time autodetection of RAID arrays When md is compiled into the kernel (not as module), partitions of type 0xfd are scanned and automatically assembled into RAID arrays. This autodetection may be suppressed with the kernel parameter "raid=noautodetect". As of kernel 2.6.9, only drives with a type 0 superblock can be autodetected and run at boot time. The kernel parameter "raid=partitionable" (or "raid=part") means that all auto-detected arrays are assembled as partitionable. I do have md compiled into the kernel, so I'm rebuilding the array now and will do the reboot to see what happens. Even if it works, the above doesn't answer the question I actually asked, so unless someone comes along and answers that question in the meantime (I'd be interested, even if it's not necessary for what I'm doing this very moment), I'll just delete the question to keep noise down.

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  • Is it possible to "stealth" dual boot a machine?

    - by BrianH
    I have a loaner laptop that has MS Windows with locked down permissions. It works okay for what I need to do, but I started wondering if there was a way to install a separate Windows OS on a separate hard drive to do what I want to do on it. Virtual I wish I could use VirtualBox or VMWare, but that is not an option (I even tried VBox portable). External Drive My next trial was see if it was possible to install Windows on an external drive, and then plug that drive in and boot from it whenever I wanted my own OS. After a few Google searches, I see that is not really a possibility. Swap Primary Drive Another option, would be to get a second internal hard drive, take the existing HD out, and install a new Windows OS on the secondary HD. This would mean swapping the internal hard drive each time I want to switch OSs - doable, but not very convenient. Dual Boot The laptop has an expansion slot where a second hard drive can be plugged in quickly. I thought about Dual booting, but I don't want to mess with the MBR on the primary hard drive. When I have to give the laptop back, I don't want a dual-boot screen to popup. Summary Is there a way to have 2 hard-drives on a machine, each with it's own OS, and maybe use BIOS settings to have only 1 hard drive active at a time? That way both hard drives could be physically connected, but only one would actually be active at a time. I basically want a second OS that does not (can not) affect the existing OS in any way, and can be removed at any time without affecting the existing OS. The secondary OS does not need any of the files on the main hard drive - it's basically like having 2 separate computers using the same hard ware... Is this possible, or would it be easier just to go out and buy a different laptop? Thanks in advance! EDIT I just discovered that my BIOS allows me to pick (at startup) which hard drive I want to boot from. I poked around in the BIOS and there is not a place to disable certain devices, like the primary hard drive. My only concern about plugging in a second hard drive and installing Windows to the second hard drive is that it will mess with the primary hard drive, or add a bootloader screen to pick which windows install to use. My thought would be to physically unplug the primary, plug in the secondary and install windows to the secondary. After the install is working properly, I can plug the primary back in and use the BIOS feature to determine which drive to boot to. Is there any way after I have 2 separate installs on 2 separate hard drives that one of the installs could mess with the MBR on the other drive?

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  • Can a process be frozen temporarily in linux?

    - by Pal Szasz
    I was wondering if there is a way to freeze any process for a certain amount of time? What I mean is that: is it possible for one application (probably running as root) to pause the execution of another already running process (any process, both GUI and command line) and then resume it later? In other words I don't want certain processes to be scheduled by the linux scheduler for a certain amount of time.

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  • Poor performance of single processor 32bit Windows XP xompared SMP in VBA+Excel

    - by Adam Ryczkowski
    Welcome! On many computers I experienced poor performance of 32 bit guests running on 64 bit Linux host (I used only the Debian family). At last I managed to collect benchmark data. I made the benchmark by running custom VBA macro, (which we use in our company) that generates 284 pages long Word document full of Excel Pie charts, tables and comments. The macro is run as a single task (excluding the standard services) on a set of identically configured Windows XP 32-bit systems. I measured the time (in sec.) needed to perform the test. The computer (i.e. my notebook Asus P53E) supports both VT-d extensions and native Windows XP. It has 2-core processor, each core is hyperthreaded, so in total we have 4 mostly independent execution units. I use the latest VirtualBox 4.2 and VMWare Workstation 9.0 for Linux, installed together on the same host (running Mint 13 Maya) but never run simultaneously. The results (in column Time) are no less accurate than ± 10% Here are the results (sorry for the format, but I couldn't find out a better solution for tables in SO): +---------------+-------------+------------------------------------------------------+---------+------------+----------------+------+ | Host software | # processor | Windows kernel | IO APIC | VT-x/AMD-V | 2D Video Accel | Time | +---------------+-------------+------------------------------------------------------+---------+------------+----------------+------+ | VirtualBox | 1 | Advanced Configuration and Power Interface (ACPI) PC | 0 | 1 | 0 | 1139 | | VirtualBox | 1 | Advanced Configuration and Power Interface (ACPI) PC | 0 | 1 | 1 | 1050 | | VirtualBox | 1 | Advanced Configuration and Power Interface (ACPI) PC | 0 | 0 | 1 | 1644 | | VirtualBox | 4 | ACPI Multiprocessor PC | 1 | 1 | 1 | 6809 | | VMWare | 1 | ACPI Uniprocessor PC | | 1 | 1 | 1175 | | VMWare | 4 | ACPI Multiprocessor PC | | 1 | 1 | 3412 | | Native | 4 | ACPI Multiprocessor PC | | | | 1693 | | Native | 1 | Advanced Configuration and Power Interface (ACPI) PC | | | | 1170 | +---------------+-------------+------------------------------------------------------+---------+------------+----------------+------+ Here are the striking conclusions: Although I've read in the VirtualBox fora about abysmal performance with 32-bit guest on 64-bit host, VMWare also has problems compared to native run, still being twice faster(!) than VBox. Although VBA is inherently single-threaded, the Excel calculations, which take much more than a half of total computation time, supposedly aren't. So one would expect some speed gain when running on 2+ cores ("+" for hyperthreading). What we see is a speed loss. And quite big one too. For the VirtualBox the VT-d extension isn't a big deal. Can anyone shed some light on why the singlethreaded Windows kernel is so much faster than the SMP one?

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  • Limit user profile on specific OU using Group Policy

    - by Sergei
    We have a host that will be used for creating VM clones from time to time for testing purposes.It is used actively for testing and users tend to keep a lot of files in their profiles.We would like to limit users profile size to avoid cloning unnecessary files to new VMs. Is there way to impose limit on user profile on OU level without introducing roaming profiles?

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  • Turn icon previews off globally in Mac OS X Snow Leopard

    - by Frederik
    When connecting to network drives (e.g. using ExpanDrive) every operation takes a long time. I've discovered this is due to the Finder trying to render an icon preview of every music file and PDF it encounters. Over the network, this can take a long time. I know I can turn off icon previews on a per-folder basis using the "View Options" dialog. Is it possible to change these settings globally?

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  • .AVI Files randomly cease to open, other strange errors too

    - by Ben Franchuk
    I Recently (a couple weeks ago) downloaded the complete series of Seinfeld, all in varying file type. I Watched them in sequence according to season and to airing date, and all was well. All of the files played fine with my media player of choice ("BS Player"), and once I had finished, I went onto watch some other TV I had previously downloaded (The U.S. Series of "The Office"), and after then, some other film and then some music, over the following weeks (keep in mind all of these files are all on the same Hard Drive). Later then, More recently, I Went back to watching Seinfeld. The episodes played well as they did before- with the exclusion of a few in Season 7. I Have not tested all of the episodes in the season, but upon inspection, the majority of them are experiencing this problem; the problem being simply that they don't open! BS Player says that the files are either damaged or that the codecs to play the files are not on my computer-- however I am certain that the files DO have the codecs, and I am pretty sure that they are NOT DAMAGED either. I Have played the files with other players (such as VLC, Media Player Classic, and Windows Media Player), too, only to the same result; of them not opening. Seemingly the only way that I can differentiate between a damaged file and a non-damaged file are the way that the icon shows in Windows Explorer. For example, the below image is how explorer shows the information of a file that is non-damaged... ...and below is how a damaged file appears... The most disturbing and confusing part of this, though, is the last episode in the season- It opens, but not as a video- Instead, as a 1 Hour, 16 Minute, and 35 Second Audio file! The file plays a song for the first 4 or so minutes, and then is pretty much silent (except for some extremely quiet noise) until the last minute or so, when a random array of chopped up sounds and beeping noises play. I Do not recognise the song at the beginning of the file, but by the sounds of it, it is a song by the artist "Mr. Oizo," who's complete works I downloaded a couple weeks before now; and a bit before then I had finished downloading season 9 (not affected by these problems) of Seinfeld. I'd also like to note that the file I told of earlier (which played audio instead of video) reads as the same size as the other files in the season (around 175 MB) and also opens as a video clip. I Have NEVER experienced any of these problems in the past, and they seem to be only effecting the one season of my downloaded TV. The problems have not arisen with any of the other files on my Hard Drive, or any of the files downloaded around the time or after the time of which I downloaded season 7 of Seinfeld- or at least to my noticing. I Use the hard drive these files are located on almost every day, so could that be the cause of these problems? Is this a sign that my HDD is soon going to die? If it helps, the HDD is a Western Digital MyBook 1.5 TB 7500 RPM. It is connected to the computer via U.S.B. 2.0. EDIT! I noticed that this problem is now occurring with Season 9 of Seinfeld- and, presumably, other files on the drive I have yet to check. Please, If you have ANY IDEA AT ALL on what may be causing this or how to fix it, do tell me!

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  • Track PC usage (keys pressed, hours used etc)

    - by yes123
    I heard once there was a software that could log your activity (form a developer point of view) like: How many key did you press How many hours you moved the mouse This software had cloud saving so you could install and use on all your pc/notebook. It would be cool if by 5 years I could know how many lines of code/text I have wrote or how many time I have worked Please note I don't want a keylogger (I just want to know my activity over time)

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  • Simple switch ports state monitoring tool

    - by Florent Courtay
    My users keep unplugging our meeting rooms computers network connection. As i can't check the computers every time a meeting ends, i'd like to find a tool, preferably running on windows, that can monitor some cisco switch ports state, and every time a cable is being unplugged, send me an email. I know that some monitoring solutions can do that already, but i wonder if something simplier (and preferably cheap / free of course !) exists.

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  • Automatically sending mails from office

    - by Rodnower
    Hello, I have VBA code in Excell that send mails, but every time it wait few second for me to accept the sending. Some time before I changed two (2) keys in registry and it sends without asking me for accepting, but I migrated computer and forgot where the keys are. Over internet there is very much bed solutions like to install some plugins and so on, and there isn't this simple solution in any place... Some one remember this two keys? Thank you for ahead.

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  • dnsmasq local network works for some but hostnames are not resolving for others

    - by prggmr
    I have set up a local network and it seems that some of us can use it properly while others can't. The problem seems to be that the local hostnames I setup don't get resolved for everyone. To overview how the network is setup: I am running an Ubuntu 10.01 server using dnsmasq, this server is setup to act as our primary DNS server, configured via our router. dnsmasq is configured using the options of domain-needed bogus-priv I use the /etc/hosts file to determain the hostnames 192.168.1.10 ra.xsi 192.168.1.10 test.xsi From my machine: If I dig the hostnames they resolve properly ; <<>> DiG 9.4.3-P1 <<>> ra.xsi ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61671 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;ra.xsi. IN A ;; ANSWER SECTION: ra.xsi. 0 IN A 192.168.1.10 ;; Query time: 9 msec ;; SERVER: 192.168.1.10#53(192.168.1.10) ;; WHEN: Wed Nov 9 12:28:34 2011 ;; MSG SIZE rcvd: 40 Ping also works: PING ra.xsi (192.168.1.10): 56 data bytes 64 bytes from 192.168.1.10: icmp_seq=0 ttl=64 time=0.834 ms 64 bytes from 192.168.1.10: icmp_seq=1 ttl=64 time=0.699 ms ^C --- ra.xsi ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.699/0.766/0.834/0.068 ms And login via SSH works using the hostname. For those that cannot connect using hostnames, if I dig from their machine it appears the name is being resolved, but they cannot ping, SSH or http access the hostname. ; <<>> DiG 9.6.0-APPLE-P2 <<>> ra ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12554 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;ra.xsi. IN A ;; ANSWER SECTION: ra.xsi. 0 IN A 192.168.1.10 ;; Query time: 8 msec ;; SERVER: 192.168.1.10#53(192.168.1.10) ;; WHEN: Wed Nov 9 12:05:50 2011 ;; MSG SIZE rcvd: 36 I've been banging my head at this and just can't seem to figure it out.

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  • error svn: OPTIONS could not connect to server

    - by benza
    I'm trying to checkout a repository with an http address. I tried with different machine but I obtained every time time the same error: svn: OPTIONS of 'http://svn.macports.org/repository/macports/trunk': could not connect to server (http://svn.macports.org) I can't understand the problem, the address is http so I think that is a problem of subversion with http address (the repository is the one for Macport for MAC OS but I think that the problem is not about the repository but is a subversion problem)

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  • Nagios Availability Report plotting in Graphite

    - by Roman Zenka
    I would like to plot my Nagios availability reports over time. Does anyone know a plugin that would do so? I found 'graphios' at https://github.com/shawn-sterling/graphios that would plot extra data provided by plugins. What I need instead is a plugin that would plot information such as: 'the service was in ERROR state 0.5% of the time last week, while the week before it was 1%'. This would be useful for knowing whether the overall stability is getting better.

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  • Windows 7 - Samba share remember password

    - by crmpicco
    I have a Samba share setup on my Windows 7 machine which allows me to access a CentOS 5.6 VM running on my machine with VirtualBox. When I restart my Windows machine I have to start the VM, as you would expect. However, when I go to connect to my Samba share in Windows it asks me for the password every time - even if I tick 'Remember My Password'. Is there any way to store the password for the VM so that it doesn't ask me every time?

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  • Is there a way to apply a GPO to all but selective users? (SBS 2008)

    - by CandyCo
    I've created a GPO in SBS 2008 that deploys and updates software. Unfortunately, one of our VPN users lives out in the sticks and has severe latency, so the start up processes and updates time out and take an awfully long time, if they ever complete at all. I'd like to apply this GPO to all auth'd users except for him, without having to create a new custom user group. Any thoughts?

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  • rdate for Windows 2008

    - by Lars D
    I need a command line tool that adjusts the time of a Windows 2008 server, using an internet clock. The purpose is to adjust the time in a script, when other apps from that script are not running. It is not an option to use the built-in NTP service because that makes some apps on this server fail - note, that this server is used in an industrial environment with no PCs on the network and no Windows update or similar applied. Any idea, anyone?

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  • Taking a screencast in Backtrack 4

    - by user30196
    I'm working on a tutorial using Backtrack 4 Live USB, and I would like to take a screencast of what I'm doing (not just screenshots) So far I have tried these application with limited success: -recordmydesktop -xvidcap -wink -istanbul -vlc -vnc2flv Each time I try the resulting files are generally choppy (at best 1 frame per second) and most don't even end up with a clear view of the screen each time. If anyone has suggestions for the screencast I would greatly appreciate it.

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  • Timout dead connections to Digi PortServer TS16

    - by MT
    We are using Digi portservers for console management of our routers. Basically users telnet to the Digis on ports 2001-2016 (corresponding to the physical serial port they want to connect to). Does anyone know if there is a way to cause the digi to close/release a user's connection after an period of idle time and if possible, where that time can be specified?

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  • What can be done in Windows 7 that can't be done in Windows XP?

    - by emddudley
    In Jeff Atwood's latest blog entry on Windows 7 he talks about getting people to move off Windows XP. What, specifically, can be done in Windows 7 that cannot be done in Windows XP? I'm not looking for usability or GUI improvements, unless they happen to significantly reduce the time that it takes to perform tasks that were previously prohibitively time consuming.

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  • Windows7 issue in mutli- tasking and memory

    - by Nitesh
    I seeming some problem in my windows OS recently, let me first say my system configuration. processor - Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66 GHz Installed memory (RAM) - 4.00 GB (3.00 GB usable) System type - 32 bit operating system I am using two OS in this system, first one is Windows7 and the other is centOS. Well, I am using this from a long time there was no problem , and all of a sudden since from couple weeks I am facing problems in my Windows7 OS. In windows7 i was nearing using multiple jobs almost every time i log in, there was no problem but now i don't no what happen I am not able to do multiple jobs at same time. For example- 1 I am now not able to listen to music in windows media player and view photo's. All of a sudden the system stops working and does not respond and then respond after 5mins and the music get played where it got stopped after 5 mins. 2 When i start browersing internet it hangs all of sudden and doesn't respond for 2 or 3 mins and gets loading. I mean it just happens for every operation i do in the system. Even now typing was also difficult, it gets hanged very frequently even though i am doing single task. I have never come across this kind of problem before. So the first thing i did was to see the useage of the processor and the memory. Well, i thick the useage of the processor was fine, for single task the useage was some where around 3 to 5%. Well, it was something weird i found in the memory, in spite of no task that i was running it was using somewhere around 34 to 41% of memory. So i opened the task manager and click on resource monitor in performance tab. And in the memory section of the monitoring tool i found the usage of my RAM, it was something like this. Hardware reserved - 1029 MB In Use - 1430 MB Modified - 49 MB Standby - 1566 MB free - 22 MB And i could also see Available 1588 MB Cached 1615 MB Total 3067 MB Installed 4096 MB well, this if all i could find out and i have no idea why my computer is acting so weird all of a sudden and the performance problem is growing day by day and i also don't know if there is problem in Bios, i have let it for default settings from long time. please help me and Thank you in advance for reading this and helping me.

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  • OWA 2010 calendar is it possible to get the 2003 week view back or customize it?

    - by Scott Szretter
    In OWA (Exchange Outlook) 2003 calendar, there was a week view, which was a simple list type view, showing the day, time, and details. In OWA 2010, this is gone and the week view shows a more graphical view with boxes spanning the time slots. It is very difficult to read when you have many appointments. Is there a way to get a list style view, or some way to customize the views in OWA 2010 so I can build one?

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