On Jan 17, 11:53 am, deeztech <[EMAIL PROTECTED]> wrote:
> throughput of about 30 MB/sec. This does not seem right to me. I'm
> expecting abou 65 MB/sec. Is that realistic? We have tried through the

  i (used to) use this target... it just isn't very fast at all.

  linear, single threaded 4k iops to a 8 disk raid5, reading just over
3000 iops.  not very interesting.  single-sata-attached can get >6000
for example.

  however, with good readahead, if you are doing bulk transfers
(backups, dd, etc) then you should get closer to wirespeed.  blockdev
--setra 4096 should be enough, but you could go 2x or 4x more.  this
is basicly true of any iscsi target though.

  i never did any extensive write testing.

  there are plenty of tuning threads and details floating around, IET
mailing list probably has the most discussion in this area, so it is a
good place to look.

  other main complaint about this box is severe limit of logical
units.  25 per volume...

You received this message because you are subscribed to the Google Groups 
"open-iscsi" group.
To post to this group, send email to open-iscsi@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at http://groups.google.com/group/open-iscsi

Reply via email to