[lkml]   [2007]   [Jul]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [patch 10/10] Scheduler profiling - Use immediate values
On Fri, Jul 06, 2007 at 06:14:10PM -0400, Chuck Ebbert wrote:
> On 07/06/2007 07:44 AM, Andi Kleen wrote:
> > I think the optimization is a good idea, although i dislike it
> > that it is complicated for the dynamic markers. If it was just
> > static it would be much simpler.
> Another thing to consider is that there might be hundreds of these
> probes/tracepoints active in an instrumented kernel. The overhead
> adds up fast, so the gain may be worth all the pain.

Only if you want to squeeze the last bit of performance out of
_debugging_ functionality.

You avoid all the pain if you simply don't use debugging functionality
on production systems.



"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-07-07 01:31    [W:0.126 / U:2.204 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site