tech-kern archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: amr Serious performance issues

On Tue, Jan 11, 2011 at 03:09:03PM +0100, Hans Rosenfeld wrote:
> Have you used a MegaRAID recently with 5.1?
> I have a similar performance issue with an AMI MegaRAID SCSI 320 without
> write cache. On a RAID5 of 4 73GB disks I get about 6MB/s write speed.
> Until recently I believed that this just old hardware and lack of write
> cache. Then I found out that Linux does about 27MB/s on the same hardware
> and configuration.

Are partitions aligned in the same way ?

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference

Home | Main Index | Thread Index | Old Index