lkml.org 
[lkml]   [2004]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Linux 2.6.6-rc3
From
Date
On Wed, 2004-04-28 at 19:11, Andrew Morton wrote:
> Craig Thomas <craiger@osdl.org> wrote:
> >
> > I have taken a quick look at the results and I see no degredations
> > from 2.6.6-rc2 and the performance looks much better than the
> > 2.6.5 kernel for dbt3 (as reported earlier).
>
> The 70% dbt3 improvement is extremely fishy. Yes, there are things in
> 2.6.6-rc3 which could improve database workloads by that much, but dbt3
> doesn't appear to be using them.
>
> Again, the vmstat traces indicate that after a run on 2.6.6-rc3 we have a
> full gigabyte less used pagecache than with 2.6.5. In both cases there is
> still a lot of free memory. Which tends to indicate that the -rc3 run was,
> for some reason, not an equivalent workload - it's using a smaller dataset.
>
> I'd suggest that you double-check these results, try and work out why the
> -rc3 run is touching less data. Maybe go back and redo the 2.6.5 test?

That's a good plan. We will do a re-run of 2.6.5 and get back to
the list.

-
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: 2005-03-22 14:02    [W:0.065 / U:0.600 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site