Date: Mon, 01 Jun 2009 11:36:00 +0800 From: =?UTF-8?B?IuisneW/l+aYjChDaGloLUNoYW5nIEhzaWVoKSI=?= <cch@kmu.edu.tw> To: Andrew Snow <andrew@modulus.org> Cc: freebsd-scsi@freebsd.org Subject: Re: Some problems about iSCSI initiator 2.1.0 Message-ID: <4A234CA0.9010009@kmu.edu.tw> In-Reply-To: <4A234343.7000809@modulus.org> References: <4A23376D.4080300@kmu.edu.tw> <4A234343.7000809@modulus.org>
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Dear Andrew,
Thank you for your advice.
We have re-done the tests by
dd if=/dev/zero of=${iSCSI_TARGET_DIR}/bigf bs=1024k count=1000
But it does not make big differences.
The iSCSI target da2 is still much steady than da0 and da1.
The new results are at http://free.cc.kmu.edu.tw/iscsi/iotest.txt
Original results with /dev/random are now at
http://free.cc.kmu.edu.tw/iscsi/iotest-random.txt
Andrew Snow wrote:
>> Our tests are dd if=/dev/random of=${iSCSI_TARGET_DIR}/bigf bs=1024k
>> count=1000
>
> Try using /dev/zero instead of /dev/random, which causes excessive CPU
> load on the initiator which affects the results.
>
>
> - Andrew
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