Re: PDC20265 in RH 7.1

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On Sat, Sep 15, 2001 at 08:56:20AM +0200, Jörg Spilker wrote:

> i'm running a 2.4.9 kernel with the lastest pdcraid modules from RedHats
> Website installed and compiled. Seems to work fine. I did some
> benchmarks writing on the RAID device and on one of the two array disks
> seperatly. Here the results (with ext2 filesystem):

Hi,
Thanks for the benchmarks; I'm currently trying to tune the performance of
the drivers (bought 4 IBM ide disks for that).

The first thing you should do is

"echo 511 > /proc/sys/vm/max-readahead"

as root. That doubled the performance for me (with the latest drivers I'm
working on)

Greetings,
   Arjan van de Ven





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