Messages in this thread | | | From | Bernd Schubert <> | Subject | Re: Performance problems with 3ware 9500S-4LP and 2.6.25-rc3 | Date | Tue, 26 Feb 2008 18:54:19 +0100 |
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Hello Andre,
On Tuesday 26 February 2008 18:43:14 Andre Noll wrote: > Hi > > we are experiencing massive performance problems with two of our > Linux servers that contain 3ware controllers on a Tyan mainboard and > a couple of 1T disks. > > 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.
do you have the write-back cache of the controller enabled for your disks? When you disable this cache, the controller will also disable the disks, cause a write-performance between 3 to 8MB/s per disks.
Cheers, Bernd
-- Bernd Schubert Q-Leap Networks GmbH
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