Michael Tokarev wrote:
Tejun Heo wrote:
Hello,
Michael Tokarev wrote:
Well. It looks like the results does not depend on the
elevator. Originally I tried with deadline, and just
re-ran the test with noop (hence the long delay with
the answer) - changing linux elevator changes almost
nothing
Justin Piszcz wrote:
On Wed, 4 Jul 2007, Justin Piszcz wrote:
On Wed, 4 Jul 2007, Michael Tokarev wrote:
Tejun Heo wrote:
Hello,
Michael Tokarev wrote:
Well. It looks like the results does not depend on the
elevator. Originally I tried with deadline, and just
re-ran the test with
On Wed, Jul 04 2007, James Bottomley wrote:
On Wed, 2007-07-04 at 10:19 +0900, Tejun Heo wrote:
Michael Tokarev wrote:
Well. It looks like the results does not depend on the
elevator. Originally I tried with deadline, and just
re-ran the test with noop (hence the long delay with
Tejun Heo wrote:
Hello,
Michael Tokarev wrote:
Well. It looks like the results does not depend on the
elevator. Originally I tried with deadline, and just
re-ran the test with noop (hence the long delay with
the answer) - changing linux elevator changes almost
nothing in the results -
On Wed, 4 Jul 2007, Michael Tokarev wrote:
Tejun Heo wrote:
Hello,
Michael Tokarev wrote:
Well. It looks like the results does not depend on the
elevator. Originally I tried with deadline, and just
re-ran the test with noop (hence the long delay with
the answer) - changing linux elevator
On Wed, 4 Jul 2007, Justin Piszcz wrote:
On Wed, 4 Jul 2007, Michael Tokarev wrote:
Tejun Heo wrote:
Hello,
Michael Tokarev wrote:
Well. It looks like the results does not depend on the
elevator. Originally I tried with deadline, and just
re-ran the test with noop (hence the long
On Wed, Jul 04, 2007 at 08:17:35PM +0400, Michael Tokarev wrote:
Dan Aloni wrote:
On Thu, Jun 28, 2007 at 02:51:58PM +0400, Michael Tokarev wrote:
[..]
Test machine was using MPTSAS driver for the following card:
SCSI storage controller: LSI Logic / Symbios Logic SAS1064E PCI-Express
Tejun Heo wrote:
Michael Tokarev wrote:
[]
A test drive is Seagate Barracuda ST3250620AS desktop drive,
250Gb, cache size is 16Mb, 7200RPM.
[test shows that NCQ makes no difference whatsoever]
And which elevator?
Well. It looks like the results does not depend on the
elevator. Originally I
Hello,
Michael Tokarev wrote:
Well. It looks like the results does not depend on the
elevator. Originally I tried with deadline, and just
re-ran the test with noop (hence the long delay with
the answer) - changing linux elevator changes almost
nothing in the results - modulo some random
[Offtopic notice: For the first time I demonstrated some
speed testing results on linux-ide mailinglist, as a
demonstration how [NT]CQ can help. But later, someone
becomes curious and posted that email to lkml, asking
for more details. Since that, I become more curious
as well, and decided to
Michael Tokarev wrote:
[]
I'm planning to test several models of SCSI drives. On SCSI front
(or maybe with different drives - I don't know) things are WAY more
interesting wrt TCQ. Difference in results between 1 and 32 threads
goes up to 4 times sometimes!. But I'm a bit stuck with SCSI
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