lkml.org 
[lkml]   [2006]   [Mar]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] 2.6.16 - futex: small optimization (?)

* Bill Davidsen <davidsen@tmr.com> wrote:

> >What are you suggesting here, that the implementation of
> >FUTEX_WAKE_OP is "ignoring inefficiencies"? Please explain why and
> >what you would do differently to solve that inefficiency.
>
> I am suggesting that "There are no such situations anymore in an
> optimal userlevel implementation" is not the right approach to the
> original post. What I would do differently is to evaluate the original
> suggestion to see if it would in fact be more efficient. [...]

that's what we did a year ago for a similar futex rescheduling
inefficiency, and came up with the FUTEX_WAKE_OP solution, which is now
part of the kernel and is used by glibc. But we are all ears for
alternative suggestions.

Ingo
-
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: 2006-03-31 20:21    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site