[Stgt-devel] No LUN option in target.c

[FUJITA Tomonori]

On Mon, 26 Nov 2007 09:53:38 +0100
Albert Pauw <apauw at inter.nl.net> wrote:

> Just reminded myself to compare apples with apples, not pears ;-)
> 
> So I ran the tests again, both type of targets (iet, tgt) with the same 
> settings
> (MaxBurstLength, DataSegmentLenghts, Digests).
> 
> I see a six fold difference in performance, I don't see iet starting low 
> (twice the performance of tgt)

So IET is still faster?

If so, very wired. I just run open-iscsi and IET/tgt with two boxes
connected via a GbE switch with the same iSCSI parameter

sens:/home/fujita# ./ltp-full-20061222/testcases/kernel/io/disktest/disktest -PT -T30 -h1 -K8 -B32768 -pL -ID /dev/sdd

- tgt

| 2007/11/26-17:39:24 | STAT  | 2184 | v1.2.8 | /dev/sdd | Read throughput: 53706752.0B/s (51.22MB/s), IOPS 1647.0/s.

- IET

| 2007/11/26-17:44:21 | STAT  | 2248 | v1.2.8 | /dev/sdd | Read throughput: 42860544.0B/s (40.88MB/s), IOPS 1316.0/s.


BTW, you need to change several parameter with tgt since the tgt
default paramaters are different from the IET paramaters.