lkml.org 
[lkml]   [2004]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Add kallsyms_lookup() result cache
On Sat, 19 Jun 2004, Albert Cahalan wrote:

> I'm not so sure anything needs to be fixed, save for SGI upgrading
> to a more modern procps. There are many more important things:

OK, I looked into this more closely, and gave procps 3.2.1 a spin.
This gives us a similar speedup (top now only consumes 60% of a CPU)
to that which I obtained by cacheing symbol lookups and using an old
procps. This difference is certainly explainable by top now only
obtaining wchan information for displayed processes.

60% is far better than 800%, so this is certainly progress. However
60% is also still quite a bit of CPU time. I'll spend some cycles
trying to whittle it down some more, but I'm not all that hopeful.

Thanks for the discussion, it was certainly enlightening.

Brent

--
Brent Casavant bcasavan@sgi.com Forget bright-eyed and
Operating System Engineer http://www.sgi.com/ bushy-tailed; I'm red-
Silicon Graphics, Inc. 44.8562N 93.1355W 860F eyed and bushy-haired.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:04    [W:0.086 / U:0.356 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site