On 08/27/2012 12:58 PM, Yuri Vorobyev wrote:
> 27.08.2012 14:43, Sašo Kiselkov пишет:
>
>>> Is there any way to disable ARC for testing and leave prefetch enabled?
>>
>> No. The reason is quite simply because prefetch is a mechanism separate
>> from your direct application's read requests. Prefetc
27.08.2012 14:43, Sašo Kiselkov пишет:
Is there any way to disable ARC for testing and leave prefetch enabled?
No. The reason is quite simply because prefetch is a mechanism separate
from your direct application's read requests. Prefetch runs on ahead of
your anticipated read requests and plac
On 08/27/2012 10:37 AM, Yuri Vorobyev wrote:
> Is there any way to disable ARC for testing and leave prefetch enabled?
No. The reason is quite simply because prefetch is a mechanism separate
from your direct application's read requests. Prefetch runs on ahead of
your anticipated read requests and
27.08.2012 14:02, Sašo Kiselkov пишет:
Can someone with Supermicro JBOD equipped with SAS drives and LSI
HBA do this sequential read test?
Did that on a SC847 with 45 drives, read speeds around 2GB/s aren't a
problem.
Thanks for info.
Don't forget to set primarycache=none on testing dataset
27.08.2012 14:02, Sašo Kiselkov пишет:
Can someone with Supermicro JBOD equipped with SAS drives and LSI
HBA do this sequential read test?
Did that on a SC847 with 45 drives, read speeds around 2GB/s aren't a
problem.
Thanks for info.
Don't forget to set primarycache=none on testing dataset
On 08/26/2012 07:40 AM, Yuri Vorobyev wrote:
> Can someone with Supermicro JBOD equipped with SAS drives and LSI
> HBA do this sequential read test?
Did that on a SC847 with 45 drives, read speeds around 2GB/s aren't a
problem.
> Don't forget to set primarycache=none on testing dataset.
There's
25.07.2012 9:29, Yuri Vorobyev пишет:
I faced with a strange performance problem with new disk shelf.
We a using ZFS system with SATA disks for a while.
What OS and release?
Oh. I forgot this important thing.
It is OpenIndiana oi_151a5 now.
New testing data:
I reboot to first boot enviro
23.07.2012 21:59, Yuri Vorobyev пишет:
I faced with a strange performance problem with new disk shelf.
We a using ZFS system with SATA disks for a while.
What OS and release?
Oh. I forgot this important thing.
It is OpenIndiana oi_151a5 now.
New testing data:
I reboot to first boot envir
Hi,
Have you had a look iostat -E (error counters) to make sure you don't
have faulty cabling? I've bad cables trip me up once in a manner similar
to your situation here.
Cheers,
--
Saso
On 07/23/2012 07:18 AM, Yuri Vorobyev wrote:
> Hello.
>
> I faced with a strange performance problem with ne
23.07.2012 19:39, Richard Elling пишет:
I faced with a strange performance problem with new disk shelf.
We a using ZFS system with SATA disks for a while.
What OS and release?
Oh. I forgot this important thing.
It is OpenIndiana oi_151a5 now.
___
On Jul 22, 2012, at 10:18 PM, Yuri Vorobyev wrote:
> Hello.
>
> I faced with a strange performance problem with new disk shelf.
> We a using ZFS system with SATA disks for a while.
What OS and release?
-- richard
> It is Supermicro SC846-E16 chassis, Supermicro X8DTH-6F motherboard with 96Gb
Hello.
I faced with a strange performance problem with new disk shelf.
We a using ZFS system with SATA disks for a while.
It is Supermicro SC846-E16 chassis, Supermicro X8DTH-6F motherboard with
96Gb RAM and 24 HITACHI HDS723020BLA642 SATA disks attached to onboard
LSI 2008 controller.
Prett
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