* LSI53C1030 (Fustion MPT) performance
@ 2003-11-24 10:09 Karl Pitrich
2003-11-24 19:57 ` Andrew Morton
0 siblings, 1 reply; 3+ messages in thread
From: Karl Pitrich @ 2003-11-24 10:09 UTC (permalink / raw)
To: linux-kernel
hi,
i got a new ibm intellistation z pro dual xeon (6221-49G) with on board
Fusion MPT chipset (LSI53C1030) and fast U160 disks.
2.4.20-8 (redhat) and 2.6.0-test9-vanilla
(each customer compiled minimal kernels)
both yield very poor disk performance.
i didn't do specific benkchmarking, but mv'ing a 3GB $HOME to another
partition takes at least 4x the time as on my old P4 workstation with
IDE drive.
is poor performance with this controller a known problem?
could that have to do something with smp?
in 2.6.0, the driver's cvs-versions seem to match the ones in the
sources offered by LSI for download.
lkml-archives and google weren't all too helpful.
any info/help apreciated,
/ karl
PS: in the course of this i studied dmesg and found:
calibrating APIC timer ...
..... CPU clock speed is 3066.0234 MHz.
..... host bus clock speed is 133.0314 MHz.
is 'host bus clock speed' != front side bus speed?
this shows up also on other p4 machines with much faster FSB than 133
mhz.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: LSI53C1030 (Fustion MPT) performance
2003-11-24 10:09 LSI53C1030 (Fustion MPT) performance Karl Pitrich
@ 2003-11-24 19:57 ` Andrew Morton
2003-11-25 10:14 ` Karl Pitrich
0 siblings, 1 reply; 3+ messages in thread
From: Andrew Morton @ 2003-11-24 19:57 UTC (permalink / raw)
To: Karl Pitrich; +Cc: linux-kernel
Karl Pitrich <pit@0xff.at> wrote:
>
> hi,
>
> i got a new ibm intellistation z pro dual xeon (6221-49G) with on board
> Fusion MPT chipset (LSI53C1030) and fast U160 disks.
>
> 2.4.20-8 (redhat) and 2.6.0-test9-vanilla
> (each customer compiled minimal kernels)
> both yield very poor disk performance.
>
> i didn't do specific benkchmarking, but mv'ing a 3GB $HOME to another
> partition takes at least 4x the time as on my old P4 workstation with
> IDE drive.
>
> is poor performance with this controller a known problem?
> could that have to do something with smp?
>
> in 2.6.0, the driver's cvs-versions seem to match the ones in the
> sources offered by LSI for download.
> lkml-archives and google weren't all too helpful.
>
The 2.6 driver runs nicely in single-disk mode but has been reported to run
like a dog in RAID mode. I do not know if the 2.4 driver has the same problem.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: LSI53C1030 (Fustion MPT) performance
2003-11-24 19:57 ` Andrew Morton
@ 2003-11-25 10:14 ` Karl Pitrich
0 siblings, 0 replies; 3+ messages in thread
From: Karl Pitrich @ 2003-11-25 10:14 UTC (permalink / raw)
To: linux-kernel; +Cc: Andrew Morton
On Mon, 2003-11-24 at 20:57, Andrew Morton wrote:
> Karl Pitrich <pit@0xff.at> wrote:
> >
<snip>
> >
>
> The 2.6 driver runs nicely in single-disk mode but has been reported to run
> like a dog in RAID mode. I do not know if the 2.4 driver has the same problem.
well, i don't have a raid or mirror container configured.
the driver from 2.6.0-test9 (vanilla) runns nicely in fact, but is really, really slow,
my UDMA IDE machine is quite fast compared to the MPT.
(FYI: colleagues having the same machine running win2003 also tell me the disks are relatively slow)
further, i kindly heard from Dan Creswell <dan@dcrdev.demon.co.uk> that several
people experience performance problems with this controller and that LSI is also
aware of that and eager to fix this.
/ karl
^ permalink raw reply [flat|nested] 3+ messages in thread
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