lkml.org 
[lkml]   [2006]   [Jul]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 7/7] iosched: introduce deadline_kick_page()
Jens,

On Wed, Jun 28, 2006 at 01:27:32PM +0200, Jens Axboe wrote:
> > The overhead of deadline_kick_page() becomes large when the request is
> > large (256 pages). But I guess there's way to optimize it:
> > - most requests will be consisted of a set of continuous pages, i.e. a
> > range comparison will be sufficient.
> > - for a system with lots of queued requests(>100), maybe the gain can
> > well pay for the overheads?
>
> Sorry, there's just no way that something like that is acceptable for
> inclusion. I don't care much about the overhead numbers (I can see from
> the code that it sucks :-), I wanted to see some numbers on what
> scenarios this helps performance and by how much.

Ok, thanks. I hope that I'll be able to bring with some performance
numbers the next time :-)

Regards,
Wu
-
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: 2006-07-04 03:34    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site