On 07/03/11 08:31, Roland RoLaNd wrote: > Hello, > > Today my server stopped responding. > i went to the console and on the screen there were a continuous loop of the > following info shown on the screen: > > BUG: soft lockup - CPU#0 stuck for 10s! [java:13959] > > and alot of other information. > ii've took a screen shot of the info shown , you can find it under the > following url: http://img585.imageshack.us/i/img00012201103070833.jpg/ > and had to hard reset for it to be back up and running. > > i tried googling with no luck for direct relevant info. > so hoping you can help out Some real kernel developers might have better insight on why this happens. But this hits APIC timers during a syscall. I would probably try to boot the box with 'noapic' in the kernel command line, to see if this improves things or not. Do you see the "soft lockup - CPU#0" always? or does it also happen to other CPUs as well? And if it does, is the java process running on more CPUs? kind regards, David Sommerseth