2005-09-21 18:43:14

by Hans Reiser

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Subject: latest patches degrade reiser4 performance substantially

At the this time we have no idea which patch is responsible, probably in
a day or two we'll have a patch to fix it.

Hans


2005-09-21 18:53:38

by Andrew Morton

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Subject: Re: latest patches degrade reiser4 performance substantially

Hans Reiser <[email protected]> wrote:
>
> At the this time we have no idea which patch is responsible, probably in
> a day or two we'll have a patch to fix it.
>

OK. I assume this performance change is demonstrable in just
2.6.14-rc2+reiser4? Beware that there are other changes in the -mm lineup
which might cause regressions. Notably

mm-try-to-allocate-higher-order-pages-in-rmqueue_bulk.patch

and

per-task-predictive-write-throttling-1.patch
per-task-predictive-write-throttling-1-tweaks.patch

2005-09-21 19:17:04

by Hans Reiser

[permalink] [raw]
Subject: Re: latest patches degrade reiser4 performance substantially

Andrew Morton wrote:

>Hans Reiser <[email protected]> wrote:
>
>
>>At the this time we have no idea which patch is responsible, probably in
>>a day or two we'll have a patch to fix it.
>>
>>
>>
>
>OK. I assume this performance change is demonstrable in just
>2.6.14-rc2+reiser4? Beware that there are other changes in the -mm lineup
>which might cause regressions. Notably
>
> mm-try-to-allocate-higher-order-pages-in-rmqueue_bulk.patch
>
>and
>
> per-task-predictive-write-throttling-1.patch
> per-task-predictive-write-throttling-1-tweaks.patch
>
>
>
>
>
I'll have vs check to make sure it is reiser4 changes causing the
drop. Thanks much for the suggestion we check that.