[lkml]   [2005]   [Nov]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Poor Software RAID-0 performance with
On 11/21/05, Lennart Sorensen <> wrote:
> > dkstorage01:~# hdparm -t /dev/md0
> > /dev/md0:
> > Timing buffered disk reads: 182 MB in 3.01 seconds = 60.47 MB/sec
> >
> > dkstorage02:~# hdparm -t /dev/hdc1
> > /dev/hdc1:
> > Timing buffered disk reads: 184 MB in 3.02 seconds = 60.93 MB/sec
> How about at least testing one of the drives involved in the raid,
> although I assume they are identical in your case given the numbers.

There are four identical drives in the machines although I only stripe
on two of them - I can assure you that I get the same numbers from all
the drives - I should ofcause have put this info in the orig post.

> Did you test this with other kernel versions (older ones) to see if it
> was better in the past?

Also tried 2.4.27 and 2.4.30 - no difference there.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-11-22 10:49    [W:0.088 / U:1.856 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site