lkml.org 
[lkml]   [2008]   [Feb]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: IO queueing and complete affinity w/ threads: Some results
On Mon, Feb 18, 2008 at 02:33:17PM +0100, Andi Kleen wrote:
> Jens Axboe <jens.axboe@oracle.com> writes:
>
> > and that scrapping the remote
> > softirq trigger stuff is sanest.
>
> I actually liked Nick's queued smp_function_call_single() patch. So even
> if it was not used for block I would still like to see it being merged
> in some form to speed up all the other IPI users.

Yeah, that hasn't been forgotten (nor have your comments about folding
my special function into smp_call_function_single).

The call function path is terribly unscalable at the moment on a lot
of architectures, and also it isn't allowed to be used with interrupts
off due to deadlock (which the queued version can allow, provided
that wait=0).

I will get around to sending that upstream soon.


\
 
 \ /
  Last update: 2008-02-19 02:53    [W:0.064 / U:0.500 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site