lkml.org 
[lkml]   [2008]   [May]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [patch] speed up / fix the new generic semaphore code (fix AIM7 40% regression with 2.6.26-rc1)
From
Date
Linus Torvalds <torvalds@linux-foundation.org> writes:
>
> Well, it turns out that Ingo's fixed statistics actually put the real cost
> in fcntl/ioctl/open/release:
>
> 310 down <= lock_kernel <= sys_fcntl <= system_call_after_swapgs <

That must be ->fasync? If it was file locks the lock_kernel would not
be inlined into sys_fcntl. Or is that an truncated back trace?

-Andi (wondering if he should plug ->fasync_unlocked again ...)


\
 
 \ /
  Last update: 2008-05-09 10:33    [W:0.060 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site