On Wednesday 26 February 2014, Ken Moffat wrote: >On Thu, Feb 27, 2014 at 04:26:35AM +0100, Mike Galbraith wrote: >> I would start with strace to see if a task is looping in userspace, >> then move on to perf top -g -p <pid> (or perf record/report) to peek >> at what it's up to in the kernel. Once you have the where, >> trace_printk() is the best thing since sliced bread (which ranks just >> below printk()). >> >> -Mike > > Thanks. I'll need to build perf. > >ؤ¸en I probably will too, but I don't have a huge amount of tracing turned on in this kernel. We'll see what happens tonight & go from there. FWIW, about all I see in htop is the command line that launched it.
Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
