From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 15688] mptsas & poor performance
Date: Sat, 10 Apr 2010 12:00:58 GMT
Message-ID: <201004101200.o3AC0wxk006399@demeter.kernel.org>
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https://bugzilla.kernel.org/show_bug.cgi?id=15688
--- Comment #5 from dujun@perabytes.com 2010-04-10 12:00:53 ---
Hi Andrew & Kashyap,
It seems to me that the 4.22.00.00 driver from lsi is much faster than kernel
3.xx version driver. We have 16 WD SATA disks connected through lsi sas
expander to 1068e hba and linux md raid5 using these disks. The system has only
one quad-core E5405 CPU. With the new lsi driver, we get sequential dd read
performance up to 795MB/s and write performance up to 395MB/s which is almost
twice as the kernel 3.xx driver.
We will investigate different hardware setup further and let u know as soon as
possible.
Johnson
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