Messages in this thread | | | Date | Thu, 24 Jun 2004 07:05:39 -0700 | From | William Lee Irwin III <> | Subject | Re: finish_task_switch high in profiles in 2.6.7 |
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On Thu, Jun 24, 2004 at 01:36:08PM +0200, Andi Kleen wrote: > Sounds like a inferior clone of dprobes to me. But I doubt it > would help tracking this down.
The schedprof thing I wrote to track down the source of context switches during database creation may prove useful, since it has at least demonstrated where thundering herds came from properly once before and is damn near idiotproof -- it requires no more than readprofile(1) from userspace. I'll dredge that up again and maybe we'll see if it helps here. It will also properly point to sys_sched_yield() and the like in the event of badly-behaved userspace.
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