Messages in this thread | | | Date | Wed, 6 Mar 2013 08:01:39 -0800 | Subject | Re: [PATCH v2 0/4] ipc: reduce ipc lock contention | From | Linus Torvalds <> |
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On Tue, Mar 5, 2013 at 11:13 PM, Davidlohr Bueso <davidlohr.bueso@hp.com> wrote: > > Digging into the _raw_spin_lock call: > > 17.86% oracle [kernel.kallsyms] [k] _raw_spin_lock > | > --- _raw_spin_lock > | > |--49.55%-- sys_semtimedop > | | > | |--77.41%-- system_call > | | semtimedop > | | skgpwwait > | | ksliwat > | | kslwaitctx
Hmm. It looks like you cut that off a bit too early. This shows that half the cases came from sys_semtimedop. Where did the other half come from?
Linus
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