Re: Performance problems with 3ware 9500S-4LP and 2.6.25-rc3

Andre Noll
2008-02-27T10:13:48Z

[-- Attachment #1: Type: text/plain, Size: 977 bytes --]

On 00:07, Arnd Hannemann wrote:

> > During the daily cron job that uses rsync to sync a 500G file system
> > from another machine to the raid on the 3ware controller the load
> > jumps up, and the machine becomes sluggish as hell. For example, an
> > ssh login to that machine takes minutes to complete and ldap becomes
> > unreliable while the rsync job is running. Even Nagios complains
> > about the machine being down while rsync is running.
>
> Could you give some numbers, please?

What kind of numbers would you like to see?

> However there are some known issues:
>
> http://forums.storagereview.net/index.php?showtopic=25923
> http://tumbleweed.org.za/2007/02/16/horrific-performance-with-3ware-raid

Thanks, this helped a lot. However, there does not seem to be a way
to make the system more responsive, which is really the problem we
are experiencing.