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 - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
