lkml.org 
[lkml]   [2006]   [Apr]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Lockless page cache test results
On St 26-04-06 15:53:10, Jens Axboe wrote:
> Hi,
>
> Running a splice benchmark on a 4-way IPF box, I decided to give the
> lockless page cache patches from Nick a spin. I've attached the results
> as a png, it pretty much speaks for itself.
>
> The test in question splices a 1GiB file to a pipe and then splices that
> to some output. Normally that output would be something interesting, in
> this case it's simply /dev/null. So it tests the input side of things
> only, which is what I wanted to do here. To get adequate runtime, the
> operation is repeated a number of times (120 in this example). The
> benchmark does that number of loops with 1, 2, 3, and 4 clients each
> pinned to a private CPU. The pinning is mainly done for more stable
> results.

35GB/sec, AFAICS? Not sure how significant this benchmark is.. even
with 4 clients, you have 2.5GB/sec, and that is better than almost
anything you can splice to...
Pavel
--
Thanks for all the (sleeping) penguins.
-
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: 2006-04-28 11:15    [from the cache]
©2003-2011 Jasper Spaans