etalk etalk wrote:
5.3 vs 6.0 The test tool is Iozone3_257, and the test command is
“./iozone -A -f /mnt/tmpfile.test -g 1g -n 1m -q 8k -y 2k -R -b
outfile-Af.xls ” (http://www.iozone.org/src/current/). We ran all the
tests on the same PC with 2.4 GHz Pentium CPU and 512M main memory.
Figure1~Figure5 show the results of the file system performance
comparison between Bsd5.3’s UFS2 and Bsd6.0’s UFS2 when testing with
different file system (local, sync, async, softupdate, sync+softupdate).
According to the figures, our conclusion is: On all kinds of file
systems, the write, rewrite, read and reread performance of the two is
almost same and we cant say that Bsd6.0 make a improvement on file
system IO performance.
http://blog.csdn.net/minerboyIo/Gallery/204114.aspx
linux2.6.11 vs bsd 5.3 The test tool is Iozone3_257, and the test
command is “./iozone -A -f /mnt/tmpfile.test -g 1g -n 4m -q 8k -y 2k -R
-b outfile-Af.xls ” (http://www.iozone.org/src/current/). We ran all the
tests on the same PC with 2.4 GHz Pentium CPU and 512M main memory,
Figure1, Figure2, Figure3 show the results of the file system
performance comparison between Bsd’s UFS2 and Linux’ Ext3 (the Linux
kernel version is 2.6.11, and the Bsd kernel version is 5.3) when
testing with sync, async and local (Bsd using softupdate) file system.
According to the figures, our conclusion is: a.On local file system and
async file system, Fedora4’s write and rewrite is much faster than
Bsd5.3’s (about 5-10 times). b.On all kinds of file systems, the read
and reread performance of FreeBsd5.3 is about 50%-90% lower than that of
Fedora4. c.On sync file system, Bsd5.3 writes several times faster than
Fedora4 does and rewrites over two hundred times faster than Fedora4
does. http://blog.csdn.net/minerboyIo/Gallery/204107.aspx
You don't report the type of disks you are using, or anything about the
storage. For the first test, I'd think that it's possible that you were
hitting hardware performance bottlenecks before actually testing the
filesystem performance.
Also, what are the 2,4,8 numbers referencing? How many times did you
run the tests?
Eric
--
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Eric Anderson Sr. Systems Administrator Centaur Technology
Anything that works is better than anything that doesn't.
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