Messages in this thread | | | Subject | Re: [PATCH 2/4] coredump: speedup SIGKILL sending | From | Lee Revell <> | Date | Fri, 07 Apr 2006 15:42:47 -0400 |
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On Sat, 2006-04-08 at 03:28 +0400, Oleg Nesterov wrote: > zap_process() disables irqs while traversing ->thread_group list. > So yes, if a process has a lot of threads it will be a latency regression. > (but again, __group_complete_signal() does the same while delivering this > signal, so I don't think this change can make things worse). > > However this allows us to avoid tasklist_lock in zap_threads() so I think > it is worth it. Please note that tasklist_lock was held while iterating > over _all_ threads in system, not only current's thread group. >
OK sounds good.
Lee
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