Messages in this thread | | | Subject | Re: proc_stack for x86_64 (spinning process) | From | Andi Kleen <> | Date | Tue, 08 Apr 2008 13:21:53 +0200 |
| |
Nuno Pais Fernandes <npf@eurotux.com> writes:
> Hi, > > I have a spinning process that it's locking my server (eating 100% CPU). I > can't kill it even with kill -9 > > I'm trying to use proc_stack to check what's the problem, compiling the kernel > with > > http://linuxhacker.ru/~nikita/patches/2.6.12-rc6/2005.06.11/vm_07-proc-stack.patch > > But this patch is only for x86 as my arch is x86_64. Does anyone know if > there's a patch for x86_64?
The standard way to handle that is to just do
echo 1 > /proc/sys/kernel/sysrq echo t > /proc/sysrq-trigger
and then look for the process backtrace in the kernel log.
Another alternative is to use crash to take a live dump and then analyse that using crash.
-Andi
| |