From: markus <markus@kola.li>
To: Purush Gupta <purush.gupta@nutanix.com>
Cc: Nagalakshmi Nandigama <Nagalakshmi.Nandigama@lsi.com>,
Sreekanth Reddy <Sreekanth.Reddy@lsi.com>,
support@lsi.com, DL-MPTFusionLinux@lsi.com,
linux-scsi@vger.kernel.org,
Linux Kernel List <linux-kernel@vger.kernel.org>
Subject: Re: Slow I/O performance on SAS1064
Date: Sat, 8 Mar 2014 21:14:50 +0100 [thread overview]
Message-ID: <20140308201450.GA18581@localhost.localdomain> (raw)
In-Reply-To: <CAN7X1Umb_wyTCk9w590AnSTFgL=3CC5x8zGNiGZoAdNEej9TCQ@mail.gmail.com>
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On Fri, Mar 07, 2014 at 08:24:48AM -0800, Purush Gupta wrote:
> I noticed you had benchmarked only sda target, is the behavior same on
> other targets?
>
Yes the other disk are equal to sda , but they are used with zfs and there were other preformance problems because of the multible disk access.
config:
NAME STATE READ WRITE CKSUM
home ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
sdb ONLINE 0 0 3
sdc ONLINE 0 0 0
sdd ONLINE 0 0 0
> Since they are SCSI targets, have you explored sg_utils [
> http://sg.danny.cz/sg/uu_index.html]
>
> And for benchmarking I also recommend FIO https://github.com/axboe/fio
>
Thanks for the tips.
> Good luck,
> Purush
>
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next parent reply other threads:[~2014-03-08 20:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAN7X1Umb_wyTCk9w590AnSTFgL=3CC5x8zGNiGZoAdNEej9TCQ@mail.gmail.com>
2014-03-08 20:14 ` markus [this message]
2014-03-05 17:50 Slow I/O performance on SAS1064 Markus
2014-03-05 18:21 ` Mark Knecht
2014-03-05 21:40 ` markus
2014-03-06 20:51 ` Mark Knecht
2014-03-07 9:46 ` markus
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