Just a quick update on where I got to regarding this.
Spent quite a few days nights playing and was finally able to get
the following results (from 140 tests of bonnie++):
Block Write:
Min 93.35 MB/s
Avg 98.57 MB/s
Max 103.22 MB/s
Block Read:
Min
On Fri, Nov 21, 2008 at 12:16:05PM -0800, Heady wrote:
Folks,
I've been struggling with a similar problem for a while now. My write
speeds are around 110M/s whereas, even following A. Eijkhoudt's advice
I've only been able to get 34M/s reads.
* The initiator is Open-iSCSI running on
On Fri, Nov 21, 2008 at 9:16 PM, Heady [EMAIL PROTECTED] wrote:
* The target is IET running on a Xen dom0 running Gentoo Linux with [ ... ]
Maybe not the advice you are looking for, but did you already have a
look at the SCST iSCSI target implementation ? It's faster than IET
and better
On Sat, Nov 22, 2008 at 10:58 AM, Tracy Reed [EMAIL PROTECTED] wrote:
On Sat, Nov 22, 2008 at 09:44:09AM +0100, Bart Van Assche spake thusly:
Maybe not the advice you are looking for, but did you already have a
look at the SCST iSCSI target implementation ? It's faster than IET
and better
tried this before?
Thanks for your time.
Adrian Head.
--
From: A. Eijkhoudt [EMAIL PROTECTED]
Date: Sep 13, 1:42 am
Subject: Extremely slow read performance, but write speeds are near-
perfect!
To: open-iscsi
Thank you all very much!
The suggested combinations of network configuration
On Sep 12, 8:08 am, Bart Van Assche [EMAIL PROTECTED]
wrote:
Are you aware that not only the readahead settings on the initiator
side count, but also on the target side ?
I would assume there are, but I don't see options to change that under
Windows Storage Server. Wouldn't the write speed
When we copy a file from the local disk array to the iSCSI target, the
write performance is amazing: we max out the gigabit link immediately
(100MB/sec writes easily). When we copy a file from the iSCSI target
to the local disk array however, performance is absolutely *dreadful*:
Can you try
On Sep 12, 3:49 pm, Konrad Rzeszutek [EMAIL PROTECTED] wrote:
Can you try to copy the file from the iSCSI target to /dev/null?
Yes, no difference. It's still going at a decidedly unimpressive 1.5MB/
sec.
Is the 'local disk array' a software RAID ?
No, it's a hardware RAID5 setup over 12
On Sep 12, 1:29 am, A. Eijkhoudt [EMAIL PROTECTED] wrote:
Hello and thanks in advance for reading,
We've been having serious read performance issues with Open-iSCSI.
I am having a similar problem, with good write performance and
dreadful read performance, but with bursts of good speed.
I
More 2c, for everyone. I had unacceptable speeds in general when I first
started using open-iscsi, mainly manifested when reading from my IET
target (both Ubuntu BTW). One issue was as another user mentioned, I was
reading from a fast target (2x3Ghz Xeons) and writing to a slower
(1x2.4Ghz P4)
Hello and thanks in advance for reading,
We've been having serious read performance issues with Open-iSCSI.
I'll list the specs of our setup first:
The SAN:
- Dual-Core Xeon with 2GB RAM, running Microsoft Windows Storage
Server 2003 R2
- 5TB storage, sliced into two 1.5TB and one 2.0TB
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