XWin 100% CPU usage for Java applications on Vista
I'm using Windows Vista Business 32 bit, and this happens after locking and unlocking the Vista computer while the application is running. I use Cygwin/X mostly for maintenance/administrative tasks on our Linux servers. First, since we have many Java virtual machines on our servers, I use jconsole (a tool that comes with the JDK), to get performance and status information about a particular JVM. Second, for our Oracle servers, I use the OUI (Oracle Universal Installer), and DBUA (Database Upgrade Assistant), to install Oracle software and apply patches and upgrades. All this tools are GUIs, based on Java AWT (Abstract Windowing Toolkit). AWT requires a X Server to run on Linux. Needless to say, I was very annoyed to see an upgrade to an important Oracle database fail at 50%, because the X Server was frozen and used 100% CPU. It seems the problem is dependent on the JDK and/or linux distribution, because I can always reproduce the problem on some machines, and never on others. For example I can always reproduce it with jconsole on one machine with JDK 1.5.0_08-b03 on Ubuntu 2.6.17-10-generic i686, but never on another machine with JDK 1.5.0_10-b03 on 2.6.13-1.1526_FC4smp x86_64. I can always reproduce it with the JREs/JDKs packaged with Oracle 10.2.0.3 (1.4.2_08-b03), and DBUA. I tested on 2.6.13-gentoo-r5 and Ubuntu 2.6.16.28-xen-r2 x86_64 Steps to reproduce: 1. Start the X Server, using the desktop shorcut created by the installer; 2. Start a cygwin command prompt, using the desktop shorcut created by the installer, and type this: export DISPLAY=localhost:0.0 xhost + exit 3. On a linux machine, run this command: export DISPLAY=__VISTA_HOST__:0.0 4. Start a Java GUI application, on the linux machine. For example, use the jconsole command, from the Java JDK. 5. After the GUI is displayed on the Vista machine, lock the computer, then unlock it. The GUI window will become white and unresponsive, and one CPU core will be used up to 100%. The workaround is not to lock the computer, and disable any screen savers that could lock the computer while the X Server is running. Actually, I try not to use any other applications on that machine, while the X application is running. I can also reproduce the 100% CPU on exit problem every time. Also, xterm refuses to run on Vista, with a fork() failed message. I solved the fork issue with rebaseall -b 0x6500, as suggested on a different thread, but the CPU problems persist. Below you can find two stack trace samples, taken with Process Explorer, while the X Server was frozen. ntdll.dll!RtlGetAce+0x1e6 ntdll.dll!RtlGetAce+0x190 ntdll.dll!RtlGetAce+0x125 ntdll.dll!KiUserExceptionDispatcher+0xf USER32.dll!GetMessageW+0x19f USER32.dll!GetMessageW+0x261 USER32.dll!OffsetRect+0x4d ntdll.dll!KiUserCallbackDispatcher+0x2e XWin.exe+0x4c2f6 USER32.dll!SendMessageW+0xa7 USER32.dll!EnumThreadWindows+0x18 XWin.exe+0x4c957 XWin.exe+0x2e4d68 XWin.exe+0x201fe XWin.exe+0x30c2b XWin.exe+0xece7 XWin.exe+0x192a cygwin1.dll!dll_crt0__FP11per_process+0xd88 cygwin1.dll!toascii+0x2396 ntdll.dll!RtlAcquireSRWLockShared+0x2c ntdll.dll!RtlGetAce+0x206 ntdll.dll!RtlGetAce+0x190 ntdll.dll!RtlGetAce+0x125 ntdll.dll!KiUserExceptionDispatcher+0xf USER32.dll!GetMessageW+0x19f USER32.dll!GetMessageW+0x261 USER32.dll!OffsetRect+0x4d ntdll.dll!KiUserCallbackDispatcher+0x2e USER32.dll!DispatchMessageA+0xf XWin.exe+0x47930 XWin.exe+0x20333 XWin.exe+0x30cb8 XWin.exe+0xece7 XWin.exe+0x192a cygwin1.dll!dll_crt0__FP11per_process+0xd88 cygwin1.dll!toascii+0x2396 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
3. On a linux machine, run this command: export DISPLAY=__VISTA_HOST__:0.0 4. Start a Java GUI application, on the linux machine. For example, use the jconsole command, from the Java JDK. 5. After the GUI is displayed on the Vista machine, lock the computer, then unlock it. The GUI window will become white and unresponsive, and one CPU core will be used up to 100%. I had similar problems and found that starting the X Server with -engine 1 will help. Give it a try. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
On 3/24/07, Holger Krull [EMAIL PROTECTED] wrote: 3. On a linux machine, run this command: export DISPLAY=__VISTA_HOST__:0.0 4. Start a Java GUI application, on the linux machine. For example, use the jconsole command, from the Java JDK. 5. After the GUI is displayed on the Vista machine, lock the computer, then unlock it. The GUI window will become white and unresponsive, and one CPU core will be used up to 100%. I had similar problems and found that starting the X Server with -engine 1 will help. Give it a try. I tested, unfortunately, it doesn't work. And I just discovered that opening and closing the About window from the tray icon causes the same problem. A concern is that I performed the tests using Remote Desktop. And I just found another cygwin-xfree thread named XWin 100% CPU usage (Remote Desktop) (it was on Windows 2003 Server). So Remote Desktop might also be a factor. Next week I will try again using a local session, but I already had some 100% CPU issues last week, without using Remote Desktop, so most likely Remote Desktop is not the problem. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
I had similar problems and found that starting the X Server with -engine 1 will help. Give it a try. I was experimenting with other solutions, and I found Xming, another open source project. Xming doesn't seem to have any of the problems of Cygwin/X. What's funny is that Xming has command line parameters very similar to the cygwin version, including the -engine parameter, with the same 3 options. GDI, DD, DD no lock. Even the tray icon context menu and the about window are the same. I wonder why RedHat doesn't include this X server instead of Cygwin/X in the cygwin distribution, especially since, according to the Cygwin/X home page, the project lost its maintainer 2 years ago. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
Hello, This 100% issue is a known problem with XWin on 2003 and Vista; it gets continually posted on this list. And no, -engine 1 is not the cure, i think the problem has to be analysed and remedied by the cygwin/cygwin-xfree developers. Xming (same code base?!) btw does not suffer from this problem (at least not on 2003R2; haven`t tried with Vista). Cheers Franz - Original Message - From: Vladimir Nicolici [EMAIL PROTECTED] To: cygwin-xfree@cygwin.com Sent: Saturday, March 24, 2007 2:42 PM Subject: Re: XWin 100% CPU usage for Java applications on Vista On 3/24/07, Holger Krull [EMAIL PROTECTED] wrote: 3. On a linux machine, run this command: export DISPLAY=__VISTA_HOST__:0.0 4. Start a Java GUI application, on the linux machine. For example, use the jconsole command, from the Java JDK. 5. After the GUI is displayed on the Vista machine, lock the computer, then unlock it. The GUI window will become white and unresponsive, and one CPU core will be used up to 100%. I had similar problems and found that starting the X Server with -engine 1 will help. Give it a try. I tested, unfortunately, it doesn't work. And I just discovered that opening and closing the About window from the tray icon causes the same problem. A concern is that I performed the tests using Remote Desktop. And I just found another cygwin-xfree thread named XWin 100% CPU usage (Remote Desktop) (it was on Windows 2003 Server). So Remote Desktop might also be a factor. Next week I will try again using a local session, but I already had some 100% CPU issues last week, without using Remote Desktop, so most likely Remote Desktop is not the problem. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/ -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
Hello, I can confirm the statement on Xming (i use 2003R2). There is a slight drawback pertaining to the fact, that the Xming distribution contains less fonts than cygwin-xfree. But perhaps the cygwin-xfree fonts simply can be reused for Xming? Cheers Franz - Original Message - From: Vladimir Nicolici [EMAIL PROTECTED] To: cygwin-xfree@cygwin.com Sent: Saturday, March 24, 2007 3:14 PM Subject: Re: XWin 100% CPU usage for Java applications on Vista I had similar problems and found that starting the X Server with -engine 1 will help. Give it a try. I was experimenting with other solutions, and I found Xming, another open source project. Xming doesn't seem to have any of the problems of Cygwin/X. What's funny is that Xming has command line parameters very similar to the cygwin version, including the -engine parameter, with the same 3 options. GDI, DD, DD no lock. Even the tray icon context menu and the about window are the same. I wonder why RedHat doesn't include this X server instead of Cygwin/X in the cygwin distribution, especially since, according to the Cygwin/X home page, the project lost its maintainer 2 years ago. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/ -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
Vladimir Nicolici schrieb: On 3/24/07, Holger Krull [EMAIL PROTECTED] wrote: I had similar problems and found that starting the X Server with -engine 1 will help. Give it a try. I tested, unfortunately, it doesn't work. And I just discovered that opening and closing the About window from the tray icon causes the same problem. A concern is that I performed the tests using Remote Desktop. And I Maybe a ssh tunnel instead of remote desktop will change the situation. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
On Sat, Mar 24, 2007 at 04:14:51PM +0200, Vladimir Nicolici wrote: I had similar problems and found that starting the X Server with -engine 1 will help. Give it a try. I was experimenting with other solutions, and I found Xming, another open source project. Xming doesn't seem to have any of the problems of Cygwin/X. What's funny is that Xming has command line parameters very similar to the cygwin version, including the -engine parameter, with the same 3 options. GDI, DD, DD no lock. Even the tray icon context menu and the about window are the same. I wonder why RedHat doesn't include this X server instead of Cygwin/X in the cygwin distribution, especially since, according to the Cygwin/X home page, the project lost its maintainer 2 years ago. Red Hat? This is a community project. Don't know where you got the idea that Cygwin/X was somehow supported by Red Hat. We have been missing a Cygwin/X maintainer for quite some time now. So, any problems which require code changes are not going to happen. Sorry. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
A concern is that I performed the tests using Remote Desktop. And I Maybe a ssh tunnel instead of remote desktop will change the situation. I need to run the X Server on my Windows Vista computer at work. X clients will connect to it from the Linux servers at work. In the weekends, I need to access my Vista computer at work from the XP (soon to be Vista) computer at home, over my existing encrypted VPN connection, authenticated by RSA rolling codes tokens. Why would I need ssh? If you're asking why I don't run the X server on my home computer, and have the X clients from the servers at work connect directly to it, the problem is that the connection between home and work is wireless dial-up over CDMA EVDO, not very stable, and if I loose the connection the X client will lose the connection with the X server, and crash. With remote desktop, if I loose the connection with my work computer, nothing bad happens, I just reconnect after reestablishing the connection. And remote desktop uses far less bandwidth than X protocol. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
Red Hat? This is a community project. Don't know where you got the idea that Cygwin/X was somehow supported by Red Hat. From www.cygwin.com: For Cygwin licensing or commercial support, please visit the Red Hat Cygwin Product site ... Cygwin DLL and utilities are Copyright (c) 2000, 2001,2002, 2003, 2004, 2005, 2006, 2007 Red Hat, Inc From whois: Domain Name: CYGWIN.COM Registrant: Red Hat, Inc. 1801 Varsity Drive Raleigh, NC 27606 US -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
On Sat, Mar 24, 2007 at 08:56:54PM +0200, Vladimir Nicolici wrote: Red Hat? This is a community project. Don't know where you got the idea that Cygwin/X was somehow supported by Red Hat. From www.cygwin.com: For Cygwin licensing or commercial support, please visit the Red Hat Cygwin Product site ... Cygwin DLL and utilities are Copyright (c) 2000, 2001,2002, 2003, 2004, 2005, 2006, 2007 Red Hat, Inc From whois: Domain Name: CYGWIN.COM Registrant: Red Hat, Inc. 1801 Varsity Drive Raleigh, NC 27606 US Circumstantial evidence aside, you don't see any official communications from Red Hat in this mailing list and the words Red Hat do not show up on the Cygwin/X project page except to reference the community-run sources.redhat.com, which hosts x.cygwin.com. Dig a little deeper in the web site and you'll see who supports Cygwin. In any event, now you know. There is not a staff of Red Hat engineers backing this project. It's an open source project similar to most other open source projects. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
Vladimir Nicolici schrieb: With remote desktop, if I loose the connection with my work computer, nothing bad happens, I just reconnect after reestablishing the connection. And remote desktop uses far less bandwidth than X protocol. freenx can provide the same for linux. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: XWin 100% CPU usage for Java applications on Vista
Vladimir Nicolici wrote: I wonder why RedHat doesn't include this X server instead of Cygwin/X in the cygwin distribution, especially since, according to the Cygwin/X home page, the project lost its maintainer 2 years ago. Chris has already sufficiently responded to correct your misconception about the relationship between Red Hat and Cygwin. I'll only say that your musings on why the Cygwin distribution doesn't include Xming starts with one major roadblock - we'd need a maintainer to contribute and maintain the package. I can't say whether Xming would make it through the ITP phase but if it won't have a maintainer, it would suffer the same fate as Cygwin/X right now so there's little clear value to going that route. Packages don't get into the distribution without someone willing to maintain it. Now, if you're suggesting that you would be willing to become a maintainer for an Xming package in Cygwin, then consult http://cygwin.com/contrib.html and send an ITP notice when you have a package available. You'd need to take into account an upgrade path from the current Cygwin/X package if your intent would be to replace the existing offering. Then again, maybe this turns out to be the same amount of work overall as maintaining the existing package so perhaps it would be better to just take over maintainer-ship of the current package. In any case, if you've gathered from all this that the important part of the equation here is the maintainer, I think you got the point. :-) -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 216 Dalton Rd. (508) 893-9889 - FAX Holliston, MA 01746 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
