On 13:33, Chris Snook 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. > > You're putting your box under astronomical load. This is generally > regarded as a bad idea, regardless of how well your storage controller > is performing. The machine becomes sluggish also when I write directly to the raid array. A simple dd if=/dev/zero of=tmpfile shouldn't push the load up to 4, right? > Can you measure the single-threaded throughput (say, > coping one huge file, and then syncing) to give us a baseline > performance figure? Single threaded throughput seems to be ok (140M/s). The problem is that the machine becomes unresponsive. Andre -- The only person who always got his work done by Friday was Robinson Crusoe
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