Re: Time for a pre-patch-2.0.31-3?

Richard Waltham (dormouse@farsrobt.demon.co.uk)
Thu, 3 Jul 1997 00:10:14 +0100 (BST)


Hi,

Have you checked what happens to disk read performance?

With 2.0.29, and 2.0.30 with Pavel Krauz patch, Bonnie gives something like

-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
100 2259 77.0 4873 28.5 1768 20.5 2119 76.9 4114 20.4 118.8 5.3

And with your latest patch with pre-patch 2.0.31-2

-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
100 2262 76.8 4841 30.6 1362 15.5 1445 52.7 1568 7.6 120.1 5.3

Note the drastic fall in read performance. :( These results are consistent.

Richard

Dr. Werner Fink wrote:
>
>
> Hi,
>
> here is the collected patch against pre-patch-2.0.31-2. The buffer code
> is based on the NEW buffer-code of 2.0.30. I've added some old own and old
> foreign changes (let's look into http://www.linuxhq.com/patch/20-p0595.html):
>

-- 
 Richard Waltham   |               Work: richard@digtalinterface.demon.co.uk
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