lkml.org 
[lkml]   [2009]   [Sep]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: fanotify as syscalls
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


\
 
 \ /
  Last update: 2009-09-17 19:39    [W:1.424 / U:1.260 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site