Help on JVM hang

2004-06-10 Thread Veda N Ponnusamy
Hi folks,     I'm posting this, since I know I can get help only from this community. My application is a heavily multi-threaded java application which is runs in Linux with the following configuration   OS - RH9 Kernel - 2.4.20-30.9smp glibc - glibc-2.3.2-27.9.7 JVM - SUN 1.4.2   My ap

Re: segfault on x86_64 (Fedora Core 2) 2.6.x

2004-06-10 Thread Juergen Kreileder
Marc Heckmann <[EMAIL PROTECTED]> writes: > On Wed, Jun 09, 2004 at 11:58:32PM -0700, Hui Huang wrote: >> The segfault messages look benign - they are the implicit NULL >> checks within JVM. > > But look at the following discussion, Andi Kleen one of the x86_64 > kernel developers says that the ke

Re: segfault on x86_64 (Fedora Core 2) 2.6.x

2004-06-10 Thread Marc Heckmann
On Wed, Jun 09, 2004 at 11:58:32PM -0700, Hui Huang wrote: > The segfault messages look benign - they are the implicit NULL checks > within JVM. But look at the following discussion, Andi Kleen one of the x86_64 kernel developers says that the kernel has been fixed not to log the messages if it is

Re: segfault on x86_64 (Fedora Core 2) 2.6.x

2004-06-10 Thread Radu-Adrian Popescu
Juergen Kreileder wrote: HotSpot uses SIGSEGV internally. It does on x86 too, but the x86 kernel doesn't have a segfault logger, so you don't get these messages there. IIRC there's no way to disable the x86_64 segfault logger without recompiling the kernel. Oh and when is 1.4.2 64-bit final comi

Re: segfault on x86_64 (Fedora Core 2) 2.6.x

2004-06-10 Thread Radu-Adrian Popescu
Marc Heckmann wrote: Hi, I am using j2sdk-1.4.2 on Fedora Core 2 x86_64. when starting tomcat v4.1.30 (haven't tried any other version), I get segfaults and my webapps do not run properly at all. This happens with either the 32 bit or native 64 bit versions of the SDK. I have tried on 2 separate m

Re: segfault on x86_64 (Fedora Core 2) 2.6.x

2004-06-10 Thread Juergen Kreileder
Radu-Adrian Popescu <[EMAIL PROTECTED]> writes: > The error codes come in groups of 1-4 at a time, and they're > alternate. > > What's causing this ? HotSpot uses SIGSEGV internally. It does on x86 too, but the x86 kernel doesn't have a segfault logger, so you don't get these messages there. II

Re: segfault on x86_64 (Fedora Core 2) 2.6.x

2004-06-10 Thread Hui Huang
The segfault messages look benign - they are the implicit NULL checks within JVM. Did you see a hang or a crash (i.e. tomcat process is gone, segfaults in kernel log don't count, they are handled by JVM)? Is this on HT Xeon? I've heard 2.6.5 in FC2 is not stable (frequent hang) but 2.6.6 is Ok, loo