RH9 fixes sig 11 with Apache2/Tomcat4/JVM1.4X/RH8??
Hello all, Can anyone please confirm or deny rumors that moving from RH8 to RH9 fixes random Sig 11 crashes when an Apache2/Tomcat4/JVM1.4X app is loaded? We have gone through a huge matrix of heap sizes, stack sizes, connectors, connector settings, hyperthreading off, etc. with jvm gcverbose on and still get sig 11's at random places when we load our app. This is with BOTH the IBM 1.4.1 JDK and the Sun 1.4.2_02 JDK. We have upgraded RH 8 with the latest OS patches. If anyone has found this and can point to a specific lib that would be even better. Thanks, -Dave -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, November 17, 2003 2:54 AM To: [EMAIL PROTECTED] Subject: RE: Signal 11 causing Tomcat crash I've seen similar things with Java. Are all the java related patches for the OS applied. We recently have a similar issue with Solaris 2.8 and Java and applying the relevant patches cured it. File a bug report with Sun/IBM? Greg -Original Message- From: Phil Steitz [mailto:[EMAIL PROTECTED] Sent: 15 November 2003 21:38 To: Tomcat Users List Subject: Re: Signal 11 causing Tomcat crash Jim Goodspeed wrote: Unfortunately we have also tried Sun's JVM and are experiencing the same Signal 11 errors (I've included two snippets of the Sun error - same error as the IBM Sig 11, just in a different format). Sometimes the dump specifies the library in question, other times it does not. Thanks, Jim An unexpected exception has been detected in native code outside the VM. Unexpected Signal : 11 occurred at PC=0x1 Function=[Unknown.] Library=(N/A) An unexpected exception has been detected in native code outside the VM. Unexpected Signal : 11 occurred at PC=0x59DF83B0 Function=(null)+0x59DF83B0 Library=/usr/IBMdb2/V7.1/lib/libdb2.so.1 Are you sure that the driver version and fixpack match the server? DB2 can do funny things when this is not the case. See for example: http://dbforums.com/arch/39/2002/9/515834 Phil - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RH9 fixes sig 11 with Apache2/Tomcat4/JVM1.4X/RH8??
Dave, Can anyone please confirm or deny rumors that moving from RH8 to RH9 fixes random Sig 11 crashes when an Apache2/Tomcat4/JVM1.4X app is loaded? If it happens under load (when the CPU gets hot :) and it's always in a different place, then get another server and try again (really). Sometimes it's the memory, sometimes it's the CPU, sometimes its both. We had such problems with 2 out of 6 dual-athlon machines we used for a big site. In development, everything was fine. When we released the hounds, though, everything went to hell. The same two boxes: sig 11 in random places after about 30-45 minutes of load. I don't believe that upgrading to RH9 will solve your problem, but if you're getting desperate, then it can't hurt. I've also noticed that most people that have hyperthreading turned on have horrible problems. -chris - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RH9 fixes sig 11 with Apache2/Tomcat4/JVM1.4X/RH8??
What's your hardware? Are you running multiple processors? Do you compile your own Apache2 and mod_jk/mod_jk2? Have you tried compiling your own kernel from the more recent sources. Kernel 2.4 had some shaky releases and RedHat8 fell in the middle of it. Kernel 2.4.22 is the latest. Have you tried setting the environment variable: LD_KERNEL_ASSUME=2.2.5? Oscar On Tue, 18 Nov 2003, David Muller wrote: Hello all, Can anyone please confirm or deny rumors that moving from RH8 to RH9 fixes random Sig 11 crashes when an Apache2/Tomcat4/JVM1.4X app is loaded? We have gone through a huge matrix of heap sizes, stack sizes, connectors, connector settings, hyperthreading off, etc. with jvm gcverbose on and still get sig 11's at random places when we load our app. This is with BOTH the IBM 1.4.1 JDK and the Sun 1.4.2_02 JDK. We have upgraded RH 8 with the latest OS patches. If anyone has found this and can point to a specific lib that would be even better. Thanks, -Dave -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, November 17, 2003 2:54 AM To: [EMAIL PROTECTED] Subject: RE: Signal 11 causing Tomcat crash I've seen similar things with Java. Are all the java related patches for the OS applied. We recently have a similar issue with Solaris 2.8 and Java and applying the relevant patches cured it. File a bug report with Sun/IBM? Greg -Original Message- From: Phil Steitz [mailto:[EMAIL PROTECTED] Sent: 15 November 2003 21:38 To: Tomcat Users List Subject: Re: Signal 11 causing Tomcat crash Jim Goodspeed wrote: Unfortunately we have also tried Sun's JVM and are experiencing the same Signal 11 errors (I've included two snippets of the Sun error - same error as the IBM Sig 11, just in a different format). Sometimes the dump specifies the library in question, other times it does not. Thanks, Jim An unexpected exception has been detected in native code outside the VM. Unexpected Signal : 11 occurred at PC=0x1 Function=[Unknown.] Library=(N/A) An unexpected exception has been detected in native code outside the VM. Unexpected Signal : 11 occurred at PC=0x59DF83B0 Function=(null)+0x59DF83B0 Library=/usr/IBMdb2/V7.1/lib/libdb2.so.1 Are you sure that the driver version and fixpack match the server? DB2 can do funny things when this is not the case. See for example: http://dbforums.com/arch/39/2002/9/515834 Phil - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RH9 fixes sig 11 with Apache2/Tomcat4/JVM1.4X/RH8??
To follow up a little. A great free memory tester is here: http://www.memtest86.com/ Oscar On Tue, 18 Nov 2003, Oscar Carrillo wrote: What's your hardware? Are you running multiple processors? Do you compile your own Apache2 and mod_jk/mod_jk2? Have you tried compiling your own kernel from the more recent sources. Kernel 2.4 had some shaky releases and RedHat8 fell in the middle of it. Kernel 2.4.22 is the latest. Have you tried setting the environment variable: LD_KERNEL_ASSUME=2.2.5? Oscar On Tue, 18 Nov 2003, David Muller wrote: Hello all, Can anyone please confirm or deny rumors that moving from RH8 to RH9 fixes random Sig 11 crashes when an Apache2/Tomcat4/JVM1.4X app is loaded? We have gone through a huge matrix of heap sizes, stack sizes, connectors, connector settings, hyperthreading off, etc. with jvm gcverbose on and still get sig 11's at random places when we load our app. This is with BOTH the IBM 1.4.1 JDK and the Sun 1.4.2_02 JDK. We have upgraded RH 8 with the latest OS patches. If anyone has found this and can point to a specific lib that would be even better. Thanks, -Dave -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, November 17, 2003 2:54 AM To: [EMAIL PROTECTED] Subject: RE: Signal 11 causing Tomcat crash I've seen similar things with Java. Are all the java related patches for the OS applied. We recently have a similar issue with Solaris 2.8 and Java and applying the relevant patches cured it. File a bug report with Sun/IBM? Greg -Original Message- From: Phil Steitz [mailto:[EMAIL PROTECTED] Sent: 15 November 2003 21:38 To: Tomcat Users List Subject: Re: Signal 11 causing Tomcat crash Jim Goodspeed wrote: Unfortunately we have also tried Sun's JVM and are experiencing the same Signal 11 errors (I've included two snippets of the Sun error - same error as the IBM Sig 11, just in a different format). Sometimes the dump specifies the library in question, other times it does not. Thanks, Jim An unexpected exception has been detected in native code outside the VM. Unexpected Signal : 11 occurred at PC=0x1 Function=[Unknown.] Library=(N/A) An unexpected exception has been detected in native code outside the VM. Unexpected Signal : 11 occurred at PC=0x59DF83B0 Function=(null)+0x59DF83B0 Library=/usr/IBMdb2/V7.1/lib/libdb2.so.1 Are you sure that the driver version and fixpack match the server? DB2 can do funny things when this is not the case. See for example: http://dbforums.com/arch/39/2002/9/515834 Phil - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: RH9 fixes sig 11 with Apache2/Tomcat4/JVM1.4X/RH8??
2X Intel(R) Xeon(TM) CPU 2.40GHz with hyperthreading on Downloaded binaries for Apache2.0.47 modjk2 RH Linux 8 - Linux 2.4.18-14smp #1 SMP Wed Sep 4 12:34:47 EDT 2002 i686 i686 i386 GNU/Linux IBM JDK 1.4.1 We tried LD_KERNEL_ASSUME=2.2.5 on Sun JVM but it didn't seem to have an effect. We are now crashing instead a socket in tomcat/modjk2 which is using native code. -Dave -Original Message- From: Oscar Carrillo [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 18, 2003 11:03 AM To: Tomcat Users List Subject: Re: RH9 fixes sig 11 with Apache2/Tomcat4/JVM1.4X/RH8?? What's your hardware? Are you running multiple processors? Do you compile your own Apache2 and mod_jk/mod_jk2? Have you tried compiling your own kernel from the more recent sources. Kernel 2.4 had some shaky releases and RedHat8 fell in the middle of it. Kernel 2.4.22 is the latest. Have you tried setting the environment variable: LD_KERNEL_ASSUME=2.2.5? Oscar On Tue, 18 Nov 2003, David Muller wrote: Hello all, Can anyone please confirm or deny rumors that moving from RH8 to RH9 fixes random Sig 11 crashes when an Apache2/Tomcat4/JVM1.4X app is loaded? We have gone through a huge matrix of heap sizes, stack sizes, connectors, connector settings, hyperthreading off, etc. with jvm gcverbose on and still get sig 11's at random places when we load our app. This is with BOTH the IBM 1.4.1 JDK and the Sun 1.4.2_02 JDK. We have upgraded RH 8 with the latest OS patches. If anyone has found this and can point to a specific lib that would be even better. Thanks, -Dave -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, November 17, 2003 2:54 AM To: [EMAIL PROTECTED] Subject: RE: Signal 11 causing Tomcat crash I've seen similar things with Java. Are all the java related patches for the OS applied. We recently have a similar issue with Solaris 2.8 and Java and applying the relevant patches cured it. File a bug report with Sun/IBM? Greg -Original Message- From: Phil Steitz [mailto:[EMAIL PROTECTED] Sent: 15 November 2003 21:38 To: Tomcat Users List Subject: Re: Signal 11 causing Tomcat crash Jim Goodspeed wrote: Unfortunately we have also tried Sun's JVM and are experiencing the same Signal 11 errors (I've included two snippets of the Sun error - same error as the IBM Sig 11, just in a different format). Sometimes the dump specifies the library in question, other times it does not. Thanks, Jim An unexpected exception has been detected in native code outside the VM. Unexpected Signal : 11 occurred at PC=0x1 Function=[Unknown.] Library=(N/A) An unexpected exception has been detected in native code outside the VM. Unexpected Signal : 11 occurred at PC=0x59DF83B0 Function=(null)+0x59DF83B0 Library=/usr/IBMdb2/V7.1/lib/libdb2.so.1 Are you sure that the driver version and fixpack match the server? DB2 can do funny things when this is not the case. See for example: http://dbforums.com/arch/39/2002/9/515834 Phil - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RH9 fixes sig 11 with Apache2/Tomcat4/JVM1.4X/RH8??
David, 2X Intel(R) Xeon(TM) CPU 2.40GHz with hyperthreading on Downloaded binaries for Apache2.0.47 modjk2 RH Linux 8 - Linux 2.4.18-14smp #1 SMP Wed Sep 4 12:34:47 EDT 2002 i686 i686 i386 GNU/Linux Try using a single-processor kernel, turning off hyperthreading, and compiling Apache and mod_jk locally (instead of using binaries). I know that dumping the multi-processor kernel is kinda silly when you have two processors, but having a dually running singly without crashing is better than a machine that crashes quickly. :) -chris - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RH9 fixes sig 11 with Apache2/Tomcat4/JVM1.4X/RH8??
David Muller wrote: 2X Intel(R) Xeon(TM) CPU 2.40GHz with hyperthreading on Downloaded binaries for Apache2.0.47 modjk2 RH Linux 8 - Linux 2.4.18-14smp #1 SMP Wed Sep 4 12:34:47 EDT 2002 i686 i686 i386 GNU/Linux IBM JDK 1.4.1 We tried LD_KERNEL_ASSUME=2.2.5 on Sun JVM but it didn't seem to have an effect. We are now crashing instead a socket in tomcat/modjk2 which is using native code. Wait, is the JVM crashing, or is Apache crashing? If Apache is crashing, are you using a self-compiled mod_jk2 or binaries downloaded from somewhere? If using a binary, try compiling mod_jk2 yourself. If that also doesn't fix the issue, I would also try recompiling Apache from scratch as well and recompiling mod_jk2 once more as well. -Dave - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
