Messages in this thread | | | Date | Thu, 17 Sep 2009 19:35:43 +0200 | From | Arjan van de Ven <> | Subject | Re: fanotify as syscalls |
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On Thu, 17 Sep 2009 09:40:16 -0700 (PDT) Linus Torvalds <torvalds@linux-foundation.org> wrote: > > And then we have page faults. I've long wished that from a system > call tracing standpoint we could show page faults as > pseudo-system-calls (at least as long as they happen from user space > - trying to handle nesting is not worth it). It would make it _so_ > much more obvious what the performance patterns are if you could just > do > > strace -ttT firefox > > for the cold-cache case and you'd see where the time is really spent. > > (yeah, yeah, you can get that kind of information other ways, but > it's a hell of a lot less convenient than just getting a nice trace > with timestamps).
ohhh I should add pagefaults to timechart good one.
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
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