> >>> Mario Weilguni <mweilguni@xxxxxxxx> wrote: > > strange values. An individual drive is capable of delivering 91 > > MB/sec > > > sequential read performance, and we get values ~102MB/sec out of a > > 8-drive RAID5, seems to be ridiculous slow. What command are you using to test the reads? Some recommendations to try: 1) /sbin/blockdev --setra 2048 device (where device is the partition or LVM volume) 2) Use XFS, and make sure your stripe settings match the RAID. Having said that, 102MB/sec sounds really low for any modern controller with 8 drives, regardless of tuning or filesystem choice. -- Corporations will ingest natural resources and defecate garbage until all resources are depleted, debt can no longer be repaid and our money becomes worthless - Jay Hanson -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
