From: Vladislav Bolkhovitin <vst@vlnb.net>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James.Bottomley@SteelEye.com, michaelc@cs.wisc.edu,
iscsitarget-devel@lists.sourceforge.net, mingz@ele.uri.edu,
stgt-devel@lists.berlios.de, WRWHITEHEAD@novell.com,
scst-devel@lists.sourceforge.net, linux-scsi@vger.kernel.org,
hch@infradead.org
Subject: Re: [Stgt-devel] Re: [Iscsitarget-devel] stgt a new version of iscsi target?
Date: Thu, 22 Dec 2005 13:38:46 +0300 [thread overview]
Message-ID: <43AA8236.0@vlnb.net> (raw)
In-Reply-To: <20051222085316J.fujita.tomonori@lab.ntt.co.jp>
FUJITA,
It would be helpful if you also gather CPU utilization statistics during
the tests (user/kernel/idle/iowait time + context switches/sec rate).
Vlad
FUJITA Tomonori wrote:
> I did some initial performance tests with both tgt versions and IET
> (as you know, another iSCSI software implementation runs in kernel
> space). All implementations run with write back policy so probably,
> there should be little real disk I/O effect. I started disktest
> benchmark software with cold cache state. The machine has 4 GB memory,
> 1.5K SCSI disk, 4 CPUs (x86_64).
>
> (disktest -PT -T10 -h1 -K8 -B8192 -ID /dev/sdc -w)
>
> o IET
> | 2005/12/21-18:05:15 | STAT | 7259 | v1.2.8 | /dev/sdc | Total write throughput: 48195993.6B/s (45.96MB/s), IOPS 5883.3/s.
>
> o tgt (I/O in kernel space)
> | 2005/12/21-18:03:23 | STAT | 7013 | v1.2.8 | /dev/sdc | Total write throughput: 45829324.8B/s (43.71MB/s), IOPS 5594.4/s.
>
> o mmap tgt
> | 2005/12/21-18:22:28 | STAT | 7990 | v1.2.8 | /dev/sdc | Total write throughput: 25373900.8B/s (24.20MB/s), IOPS 3097.4/s.
next prev parent reply other threads:[~2005-12-22 10:39 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <OF6932015B.01CF53D9-ONC12570D0.00462028@capvert.ins>
[not found] ` <43972C2D.9060500@cs.wisc.edu>
2005-12-08 18:46 ` Ang: Re: [Stgt-devel] Re: stgt a new version of iscsi target? Vladislav Bolkhovitin
2005-12-08 18:54 ` Ang: Re: [Stgt-devel] Re: [Iscsitarget-devel] " Mike Christie
2005-12-09 15:30 ` Ang: Re: [Stgt-devel] " Vladislav Bolkhovitin
2005-12-09 22:31 ` Ang: Re: [Stgt-devel] Re: [Iscsitarget-devel] " Mike Christie
2005-12-08 19:10 ` Mike Christie
2005-12-08 19:48 ` James Bottomley
2005-12-08 20:09 ` Mike Christie
2005-12-08 21:35 ` Dave C Boutcher
2005-12-08 21:56 ` Mike Christie
2005-12-09 15:29 ` Vladislav Bolkhovitin
2005-12-09 22:31 ` Mike Christie
2005-12-10 15:31 ` Vladislav Bolkhovitin
2005-12-10 18:19 ` Mike Christie
2005-12-10 8:46 ` FUJITA Tomonori
2005-12-09 15:30 ` Vladislav Bolkhovitin
2005-12-09 15:29 ` Vladislav Bolkhovitin
2005-12-21 23:53 ` FUJITA Tomonori
2005-12-22 10:38 ` Vladislav Bolkhovitin [this message]
2005-12-26 23:53 ` FUJITA Tomonori
2005-12-28 16:32 ` James Bottomley
2005-12-31 3:27 ` Mike Christie
2005-12-31 15:33 ` James Bottomley
2005-12-09 15:28 ` Vladislav Bolkhovitin
2005-12-09 22:23 ` Mike Christie
2005-12-10 1:15 ` Ang: Re: [Stgt-devel] " Mike Christie
2005-12-10 15:30 ` Ang: Re: [Stgt-devel] Re: [Iscsitarget-devel] " Vladislav Bolkhovitin
2005-12-10 18:22 ` Mike Christie
2005-12-10 8:46 ` FUJITA Tomonori
2005-12-10 15:32 ` Ang: Re: [Stgt-devel] " Vladislav Bolkhovitin
2005-12-10 15:54 ` Ang: Re: [Stgt-devel] Re: [Iscsitarget-devel] " FUJITA Tomonori
2005-12-14 15:17 ` [Scst-devel] " Vladislav Bolkhovitin
2005-12-10 18:09 ` Mike Christie
2005-12-14 15:09 ` Ang: Re: [Stgt-devel] " Vladislav Bolkhovitin
2005-12-08 19:47 ` Ang: Re: [Stgt-devel] Re: [Iscsitarget-devel] " James Bottomley
2005-12-09 3:57 ` Mike Christie
2005-12-09 15:00 ` Ang: Re: [Stgt-devel] " Ming Zhang
2005-12-09 15:29 ` [Scst-devel] Re: Ang: Re: [Stgt-devel] Re: [Iscsitarget-devel] " Vladislav Bolkhovitin
2005-12-09 15:48 ` James Bottomley
2005-12-10 15:32 ` Vladislav Bolkhovitin
2005-12-10 18:07 ` Mike Christie
2005-12-14 15:06 ` Vladislav Bolkhovitin
2005-12-14 19:55 ` Mike Christie
2005-12-15 18:53 ` Vladislav Bolkhovitin
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