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  • How do I capture my second monitor using avconv?

    - by Codemonkey
    With this command: avconv -f x11grab -s 2560x1440 -i :0.0 I can stream video from my main monitor. I also have a second, 1080p monitor on which I do my gaming. I want to stream from that monitor. This doesn't work: avconv -f x11grab -s 1920x1080 -i :0.1 I assume I have to use -i :0.0 and somehow specify that it should capture 1920x1080 pixels from X position 2560 and Y position 0. My gaming monitor is placed to the right of my main monitor. Unfortunately the man page for avconv is miles long, so I haven't had any luck figuring this out on my own. I have tried Using -vf with crop like this: -vcodec libx264 ... -vf "crop=$IN_WIDTH:$IN_HEIGHT:2560:360" But that only displayed 1080p video from the top left corner of my main display.

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  • Can I use Server Monitor with a non-server Mac?

    - by Chris
    I have a computer I use as a simple file and web server. I am simply desiring to be able to monitor load, traffic, memory usage, etc via Server Monitor. I have also downloaded an app for my iPhone which does the same thing, but it uses the same protocol that Server Monitor does. Is it possible to get Server Monitor to recognize my non-server box as a server so I can monitor this information? For reference, I am running 10.4.ll on this PPC box. Thanks in advance!

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  • How to output to S-Video on Windows XP in single-monitor mode (clone display)?

    - by Jephir
    I am using an IBM ThinkPad T30 running Windows XP. It is connected to a TV system via S-Video output. Windows is currently set up in multi-monitor mode with monitor 2 being output to S-Video. However, since there is no preview monitor, I can't interact with anything I drag to monitor 2 as I can't see it. I would rather have the system set up so that there is only one monitor and the output is cloned to the laptop display and S-Video. This allows me to see what I'm doing on the TV system. Is this possible?

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  • Can I sleep one of the displays on a dual-monitor setup? [duplicate]

    - by archedpenguin
    This question already has an answer here: Can I sleep one of the displays on a dual-monitor setup (running Windows 7)? 4 answers I want to be able to 'put the display to sleep' on one of my two monitors when it isn't needed, so it doesn't distract me or use unnecessary power. Ideally, the display would be asleep, but the OS would remain in dual-monitor mode, so I could still have a variety of windows open in the sleeping monitor's display space, which would mean I wouldn't have to keep switching between single- and dual-monitor modes. Its the same as "Can I sleep one of the displays on a dual-monitor setup (running Windows 7)?" I just wasn't sure I could comment on such an old thread. None of the answers there provided a perfect solution and I was wondering if there is now a solution available.

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  • How can I automatically switch audio to my speakers when my TV-as-2nd-monitor is not in use?

    - by Michael McGowan
    I have a normal LCD monitor as my primary monitor and an HD LCD television as a 2nd monitor (connected through HDMI). I also have a set of normal speakers for the computer (a Windows 7 machine) that I previously used (before I was using the TV as a 2nd monitor). When I am using the TV as a 2nd monitor, I would like audio to come from it. However, I'm oftentimes using the TV as a TV, in which case I would like the audio from my computer to come from my speakers. Is there any way to accomplish this? It seems that if I have the TV set up as the default audio, then even if I turn the TV off (or, more likely, to the input from my cable box), then the audio still goes through that rather than my speakers. Is there a solution that does not require me to manually change the settings every time I want to switch contexts?

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  • What is the process for diagnosing a ViewSonic Monitor? [closed]

    - by Phxvyper
    I have a ViewSonic monitor that has been busted for quite some time. I've been researching it and i still have no clue as to why it doesn't work. It doesn't turn on. Or rather, it will turn on, but it will not display anything. How do i go about diagnosing the monitor? The monitor is a: ViewSonic VG2230WM Model #: VS11422 Fix: I opened up the monitor and replaced all of the burst capacitors. The monitor works beautifully now.

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  • Can I use Server Monitor with a non-server Mac?

    - by Chris
    I have a computer I use as a simple file and web server. I am simply desiring to be able to monitor load, traffic, memory usage, etc via Server Monitor. I have also downloaded an app for my iPhone which does the same thing, but it uses the same protocol that Server Monitor does. Is it possible to get Server Monitor to recognize my non-server box as a server so I can monitor this information? For reference, I am running 10.4.11 on this PPC box. Thanks in advance!

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  • Nvidia Drivers on Debian / Lenny (Stable) -> Installation successful -> Monitors gets black

    - by David
    I have successfully installed the proprietary drivers for my nvidia (geforce 7300 gt) graphics card on debian/lenny. I know its not the best way to chose for driver installation ( see this link: http://wiki.debian.org/NvidiaGraphicsDrivers#non-freedrivers ). but the two ways seem to be possible for me (nvidia-kernel module compilation). Now the problem is that the monitors gets black, the power light starts blinking after i launch the x-server. Have a short look a the logs (output truncated from /var/log/Xorg.0.log): (II) Setting vga for screen 0. (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32 (==) NVIDIA(0): RGB weight 888 (==) NVIDIA(0): Default visual is TrueColor (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) (**) Jul 28 17:10:11 NVIDIA(0): Enabling RENDER acceleration (II) Jul 28 17:10:11 NVIDIA(0): Support for GLX with the Damage and Composite X extensions is (II) Jul 28 17:10:11 NVIDIA(0): enabled. (II) Jul 28 17:10:11 NVIDIA(0): NVIDIA GPU GeForce 7300 GT (G73) at PCI:1:0:0 (GPU-0) (--) Jul 28 17:10:11 NVIDIA(0): Memory: 262144 kBytes (--) Jul 28 17:10:11 NVIDIA(0): VideoBIOS: 05.73.22.25.00 (II) Jul 28 17:10:11 NVIDIA(0): Detected PCI Express Link width: 16X (--) Jul 28 17:10:11 NVIDIA(0): Interlaced video modes are supported on this GPU (--) Jul 28 17:10:11 NVIDIA(0): Connected display device(s) on GeForce 7300 GT at PCI:1:0:0: (--) Jul 28 17:10:11 NVIDIA(0): Samsung SyncMaster (CRT-0) (--) Jul 28 17:10:11 NVIDIA(0): Samsung SyncMaster (DFP-0) (--) Jul 28 17:10:11 NVIDIA(0): Samsung SyncMaster (CRT-0): 400.0 MHz maximum pixel clock (--) Jul 28 17:10:11 NVIDIA(0): Samsung SyncMaster (DFP-0): 165.0 MHz maximum pixel clock (--) Jul 28 17:10:11 NVIDIA(0): Samsung SyncMaster (DFP-0): Internal Single Link TMDS (II) Jul 28 17:10:11 NVIDIA(0): Assigned Display Device: CRT-0 (==) Jul 28 17:10:11 NVIDIA(0): (==) Jul 28 17:10:11 NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select" (==) Jul 28 17:10:11 NVIDIA(0): will be used as the requested mode. (==) Jul 28 17:10:11 NVIDIA(0): (II) Jul 28 17:10:11 NVIDIA(0): Validated modes: (II) Jul 28 17:10:11 NVIDIA(0): "nvidia-auto-select" (II) Jul 28 17:10:11 NVIDIA(0): Virtual screen size determined to be 1280 x 1024 (--) Jul 28 17:10:11 NVIDIA(0): DPI set to (85, 86); computed from "UseEdidDpi" X config (--) Jul 28 17:10:11 NVIDIA(0): option (==) Jul 28 17:10:11 NVIDIA(0): Enabling 32-bit ARGB GLX visuals. (--) Depth 24 pixmap format is 32 bpp Here is the complete /etc/X11/xorg.conf file as generated by nvidia-xconfig: # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 256.35 (buildmeister@builder101) Wed Jun 16 19:25:59 PDT 2010 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" EndSection Section "Module" Load "dbe" Load "extmod" Load "type1" Load "freetype" Load "glx" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" Hor

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  • Triple (3) Monitors under Linux

    - by widgisoft
    I have a 3 monitor setup (each 1680x1050) via an Nvidia NVS440 (2 GPUs, 2 outputs per GPU totalling 4 outputs); this works fine under Windows XP,7 but caused considerable headaches under Linux (Ubuntu 9.04). I had previously used an XFX 9600GT and the onboard XFX 9300GS to produce the same result but the card was noisy and power hungry and I was hoping that there was some magical switch in the NVS4400 that got rid of this annoying problem - turns out the NVS440 is just 2 cards on one physical PCB :-p (I searched the net high and low for people using this card under Linux but found nothing, if anything the card uses less power and is fan less so I was to benefit from it either way) Anyway, using either set up there were 5 solutions available: Have 3 separate X instances, all un joined Have 3 separate X instances, adjoined by Xinerama Have 2 separate X instances - One using twin-view, both adjoined by Xinerama Have 2 separate X instances - One using twin-view but no Xinerama Have a single Twin-view setup and leave the 3rd screen unplugged :-p The 4rd option, using 2 separate X instances and twinview (but no xinerama) was the best balance in terms of performance and usability but caused 2 really annoying issues You couldn't control (without altering the shortcuts) which screen an application opened onto - and once it was opened you couldn't move it to another screen without opening up terminal and forcing it to move Nvidia's overriding or falsifying of Xinerama breaks and the 2 screens joined by Twin view behave like a single huge screen causing popups to open in the middle of both screens and maximising of windows stretches to the width of the first 2 screens Firefox can only run one instance as the same user so having multiple firefox windows requires at least 2 users The second option "feels" like the right option, but OpenGL is basically disabled and playing any sort of game or even running anything graphical causes a huge performance drop and instability - even trying to run a basic emulator for gba or gens just causes the system to fall over. It works just enough to stare at your desktop and do nothing but as soon as you start doing some work - opening windows, dragging things around - running multiple copies of firefox it just really feels slow. The last open, only going dual screen works perfectly and everything performs as required, full GPU acceleration - two logical screen spaces - perfect, just make it work across GPUs like windows! :-p Anyway, I know RandR was supposed to pick up the slack when it would introduced GPU objects of sorts to allow multiple GPUs to be stitched together to create one huge desktop at a much deeper layer than Xinerama. I was wondering if this has now been fixed (I noticed X server 1.7 is out) and whether anyone has got it running successfully? Again, my requirements are: One huge desktop to drag any window across Maximising of windows to each screen (as XP does) Running fullscreen apps on the primary screen and disabling the mouse from moving onto the others or on all 3 stretched Finally as a side note; I am aware of the Matrox triple (and dual) head splitter but even the price they go for on eBay is more than I can afford atm, my argument: I shouldn't have to buy extra hardware to get something to work on Linux when it's something that's existed in the windows world for a long time (can you tell I don't get on with X :-p); If I had the cash I'd have bought the latest version of this box already (the new version finally supports large resolutions as the displays I have 1680x1050 each).

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  • Operating system for visualization app in 6 monitors

    - by Federico
    Hi. I have to plan the development for an application with these major requirements: Show different graphical data and animations in 6 monitors, in fullscreen mode. The hardware to be used is a PC with 3 NVIDIA GeForce 9800 GX2 cards. I have some expertise working with OpenGL, but never with more than one monitor. I have the (some limited) freedom to choose an operating system for the application. My options are: Windows XP, Windows Vista, Windows 7, Ubuntu 8.04/10.04. I would like to know, if you have some expertise or knowledge in the multi-monitor application development field, what is the recommended operating system for this kind of application? And, do I need any software other than the operating system and the NVIDIA drivers to be able to use the 6 monitors in fullscreen, showing different things in each one of them? Any comment/answer will be really appreciated. Thanks in advance! Federico

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  • ATI Radeon HD with Catalyst driver stuck mirroring screens

    - by Mike Axiak
    In 11.10 I replaced my aging Nvidia card with a new Radeon HD 6970 card. The single card has two DVI output ports which I've connected to two monitors. I installed Catalyst version 11.9 and I cannot get multiple monitors set up the way I want. I tried: $ sudo amdcccle and setting the mode to single desktop multiple monitors and whenever I do that Unity crashes and I get back to the login screen. Nothing shows up in the Xorg.*.log files for me to post here. There's only one card so I don't think xinerama would be any help here. Anyone have any ideas? EDIT: Here's my xorg.conf file: Section "ServerLayout" Identifier "aticonfig Layout" Screen 0 "aticonfig-Screen[0]-0" 0 0 EndSection Section "Module" EndSection Section "Monitor" Identifier "aticonfig-Monitor[0]-0" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Monitor" Identifier "0-DFP3" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" Option "PreferredMode" "1280x1024" Option "TargetRefresh" "60" Option "Position" "0 0" Option "Rotate" "normal" Option "Disable" "false" EndSection Section "Monitor" Identifier "0-CRT1" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" Option "PreferredMode" "1280x1024" Option "TargetRefresh" "75" Option "Position" "0 0" Option "Rotate" "normal" Option "Disable" "false" EndSection Section "Device" Identifier "aticonfig-Device[0]-0" Driver "fglrx" Option "Monitor-DFP3" "0-DFP3" Option "Monitor-CRT1" "0-CRT1" BusID "PCI:5:0:0" EndSection Section "Device" Identifier "amdcccle-Device[5]-1" Driver "fglrx" Option "Monitor-DFP3" "0-DFP3" BusID "PCI:5:0:0" Screen 1 EndSection Section "Screen" Identifier "aticonfig-Screen[0]-0" Device "aticonfig-Device[0]-0" DefaultDepth 24 SubSection "Display" EndSubSection EndSection Section "Screen" Identifier "amdcccle-Screen[5]-1" Device "amdcccle-Device[5]-1" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection

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  • Maximizing after moving RDC window between different size monitors

    - by msorens
    My Win7 system has two monitors of different sizes. When I open a Remote Desktop Connection on one monitor set to use full screen, both the RDC window and the remote system's desktop fills the monitor. If I then move the window onto my second monitor (1-Restore Down button to make it movable; 2-Drag window to other monitor; 3-Maximize button to fill monitor) the RDC window fills the monitor, but the remote system's desktop remains the same size it was before. Thus, if I move from the larger to the smaller monitor I have scrollbars to see the whole remote desktop, while if I move from the smaller to the larger monitor the remote desktop occupies only a portion of the monitor. My workaround is to close the RDC window completely then re-establish it on the other monitor. Is there a way to avoid this overhead and just resize the remote desktop to fit?

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  • Is there a way to force lubuntu screen resolution?

    - by za1
    I have a Dell Inspiron 4000, 900 Mhz Pentium III, 192 MB RAM,10.1 GB disk running Lubuntu 12.04. When I start the computer, and I check the display resolution, Monitor Settings claims that the max resolution is 1024x768. I then connected another monitor I had lying around, rebooted, and now the laptop monitor looks normal,and monitor settings claims that 1280x1024 is the max resolution (it is) and the other monitor doesn't turn on. (black screen) The external monitor is not broken. Is there a way to, without the external monitor, force the laptop monitor resolution to 1280x1024? (The following is another question) - How can you run commands automatically at startup? Specifically "xinput 18 118 0" (without quotes) The first question is important, I can live with typing the second one at every boot. Thanks

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  • Laptop Asus P50IJ with Intel 4500M GMA output going to a Dell 1907FP external monitor will not allow

    - by ProfessionalAmateur
    Hello - I just purchased an Asus P50IJ-X2 laptop which has a Intel GMA 4500M video card running Windows7. At work I output this laptop to a Dell 1907FP LCD which has a maximum resolution of 1280x1024. Not matter what I do the Windows will not allow the laptop to set a resolution higher than 1024x768 to this LCD monitor. Ive even gone to the extent of downloading PowerStrip (I'd post a link but Im new and can only enter 1 url, if you google for powerstrip its the first option) to create a custom driver for my monitor thinking Windows was having a hard time seeing the available resolutions it would accept. However, powerstrip read the registery and properly sees the monitor and what its capable of so Im now at a complete loss as to why Windows7 will not allow me to set/use a 1280x1024 resolution for this external monitor (as my last laptop did running Vista). The Intel documentation (http://software.intel.com/en-us/articles/quick-reference-guide-to-intel-integrated-graphics/) indicates that the GMA 4500M should be able to run up to a 2560x1600 max res. The Dell 1907FP specification states it can run up to a 1280x1024 res. But no matter what the computer will not allow me to set higher than a 1024x768. I'm completely baffled but I would really like to be able to output this laptop to a reasonable resolution, 1024x768 makes me feel like I'm using my mom's computer. Any help would be greatly appreciated! Here are some attached images (I apologize for the links, being new I cannot post images) that should help explain this better: Image 1 - This image is from powerstrip which shows the monitors max accepted resolution and at the top right the max res my PC currently allows. (http://imgur.com/agrno.png) Image 2 - This shows my Windows7 resolution picker. (http://imgur.com/3nv6q.png) Image 3 - The 'List all modes' option taken from the Screen Resolution Advanced Settings List All Modes. (http://imgur.com/AMREh.png) Image 4 - Monitor information from registry read by powerstrip, this shows the laptop is able to read the necessary info from the LCD monitor. (http://imgur.com/hUX4D.png)

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  • There's a stray current flowing from my monitor through the VGA cable to the PC. Is this safe?

    - by EApubs
    I have two monitors in my machine. One is an old LCS samsung monitor. Recently, I started to hear a small hum in my speakers (subwoofer) and replaced them. The new one also got the issues then I found our that its a grounding issue. I unplugged the PC's power chord. The monitor is still switched on. When I checked, there's current in the earth pin (ground pin). When I unplug the monitor, there's no current and the speaker is normal. Now, I have moved that monitor to my dad's machine and took his monitor. My question is, is it a big issues? The house's earthing system is working and its grounding the current. I won't feel it if I touch the machine like in many other cases. But still, is it good to keep that monitor attached to my machine? Can it harm the computer? What should I do?

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  • 2560 x 1600 screen resolution not available when a second monitor is attached.

    - by sgmoore
    I am running Windows 7 (64-bit edition) and have a 30" Dell 3007WFP monitor which runs at a screen resolution of 2560 x 1600. This works perfectly until I try to connect a second monitor, and then the screen resolution on the main monitor immediately drops to 1280x800 and I can't change it back up to the correct resolution until I disconnect the second monitor. The graphics card is a Nvidia Quadro FX 370. This has a dual link DVI connector (to which the 30" is connected) and a single link DVI connector. The second monitor can run at 1920x1080 and is connected using a VGA to DVI connector. Note, it does not seem to matter whether the second monitor is running at 1920x1080 or even at 800x600. Windows reports Total Available Graphics Memory: 3839MB Dedicated Video Memory: 256MB System Video Memory: 0MB Shared System Memory: 3583MB Does anyone know if this a limitation with the video card, memory, drivers, connectors or something else? If this is a limitation with the video card, can anyone recommend a PCI Express 16 card that would support at least this setup, but preferably support two 30" monitors both running 2560 x 1600. (I'm not into gaming etc, so it doesn't need to be very powerful)

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  • WCF Windows Service Monitor and process emails

    - by acadia
    Hello, I need your suggestions in solving this issue. Here is the requirement. We have a Microsoft Exchange server and we have a service email account [email protected]. We have scanners all owner the company when a user scans a document and email is sent to [email protected] as attachment. Now I need to write a Windows service which needs to monitor that email account and whenever an email is received, read the attachement and store it in the database. My question is, is it possible to do something of this sort? Any suggestions greatly appreciated. Thanks

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  • Best tools to monitor Tomcat

    - by Pier Luigi
    Hi all, I'm searching free tools for monitor tomcat (traffic, memory usage, threads, requests, CPU, logs,...). I'm currently using lambdaprobe on Tomcat 5.5.x, but it seems that is no more developed (or not? the site lambdaprobe.org is always down for me...). Has someone good experiences to share? In lambdaprobe there are some info available only if tomcat is instrumented with JMX. Well, JMX is something of strange and mysterious for me. Is a good solution in a production server? It's worth to spend my (little) time to learn it?

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  • Monitor RAM usage on CentOS and restart Apache at a certain usage

    - by Chris
    Hi, I'm running a CentOS 5.3 server with a basic LAMP stack. I've optimized LAMP and my code to run efficiently as possible, but Apache has a memory leak somewhere that kills my server every hour or so. What is the best way to write a script that will monitor the memory usage and if it peaks over, say, 450MB kill all the Apache processes and restart Apache. I know C++/PHP and basic Linux server administration but I'm not familiar with Perl or bash scripting. I'd be open to learn any solutions, though, as a temporary solution while I find the issue.

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  • Perfmon on Vista to monitor .Net CLR memory for dutch dummies

    - by Dabblernl
    OK... My managed .Net program is eating memory leading it to crash after a few hours with a OutOfMemoryException. I want to investigate this starting with using perfmon.exe. I found a description on how to do this here However, I have a dutch Vista and the terms used differ widely from the ones used in this blog and I find myself simply unable to set it up. Can someone point me the way by stating "first from the top,second from the left" how to set up a performance monitor for my .Net program?

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  • Margin animate problem with Monitor display settings

    - by Jake
    I have an issue with an animation on a webpage. I have this div with text inside of it that I set the margin using css and when the page is loaded I use jquery to animate the div to a certain part of the page. The problem is it works with my concrete pixel settings, but if I change the properties of the monitor display settings in screen resolution(pixels), the div does not animate to the appropriate spot and it doesn't even start off at the appropriate spot from the css. Sample code: #div{ position:absolute; top:20px; left:50px } $("#div").animate({marginLeft: "250px"},2000); Is there a way to have the settings of the animation margin end at the approriate position no matter what the screen resolution is?

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  • How to monitor screen updates?

    - by user299600
    I am trying to write a program that monitors when the screen has been redrawn. Meaning if any part of any window is redrawn, then the program is notified. As far as I understand I should use a journal record hook like at http://www.vbaccelerator.com/home/vb/code/libraries/Hooks/Journal_Record_Hooks/article.asp However, I do not understand which MSG type would get me the WM_PAINT events (WH_CALLWNDPROC and WH_CALLWNDPROCRET do not seem to do the job). I'm not even sure that WM_PAINT is what I'm looking for... Basically, if I knew when the DC associated with GetDesktopWindow() has changed then my problem would be solved. Question is: How do you monitor screen updates?

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  • Performance monitor shows 4294967293 sessions active

    - by TGnat
    I have an ASP.Net 3.5 website running in IIS 6 on Windows Server 2003 R2. It is a relatively small internal application that probably serves less than ten users at any given time. The server has 4 Gig of memory and shows that 3+ Gig is available while the site is active. Just minutes after restarting the web application Performance monitor shows that there is a whopping 4,294,967,293 sessions active! I am fairly certain that this number is incorrect; at the time this reading there were only 100 requests to the website. Has anyone else experienced this kind odd behavior from perf mon? Any ideas on how to get an accurate reading? UPDATE: After running for about an hour the number of active sessions has dropped by 4. So it does seem to be responding to sessions timing out.

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  • Thread.sleep vs Monitor.Wait vs RegisteredWaitHandle?

    - by Royi Namir
    (the following items has different goals , but im interesting knowing how they "PAUSEd") questions Thread.sleep - Does it impact performance on a system ?does it tie up a thread with its wait ? what about Monitor.Wait ? what is the difference in the way they "wait"? do they tie up a thread with their wait ? what aboutRegisteredWaitHandle ? This method accepts a delegate that is executed when a wait handle is signaled. While it’s waiting, it doesn’t tie up a thread. so some thread are paused and can be woken by a delegate , while others just wait ? spin ? can someone please make things clearer ? edit http://www.albahari.com/threading/part2.aspx

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  • What interprocess locking calls should I monitor?

    - by Matt Joiner
    I'm monitoring a process with strace/ltrace in the hope to find and intercept a call that checks, and potentially activates some kind of globally shared lock. While I've dealt with and read about several forms of interprocess locking on Linux before, I'm drawing a blank on what to calls to look for. Currently my only suspect is futex() which comes up very early on in the process' execution. Update0 There is some confusion about what I'm after. I'm monitoring an existing process for calls to persistent interprocess memory or equivalent. I'd like to know what system and library calls to look for. I have no intention call these myself, so naturally futex() will come up, I'm sure many libraries will implement their locking calls in terms of this, etc. Update1 I'd like a list of function names or a link to documentation, that I should monitor at the ltrace and strace levels (and specifying which). Any other good advice about how to track and locate the global lock in mind would be great.

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