More zfs benchmarks

[Joshua Boyd]

Repeated the same tests on my AMD64 dual core 4GB system with 5 HD103SI 1T
drives in raidz1 on a Supermicro PCI-E controller, running 8-STABLE.

foghornleghorn# dd if=/dev/zero of=/usr/zerofile.000 bs=1M count=200
200+0 records in
200+0 records out
209715200 bytes transferred in 4.246402 secs (49386563 bytes/sec)
foghornleghorn# dd if=/dev/zero of=/usr/zerofile.000 bs=1M count=200
200+0 records in
200+0 records out
209715200 bytes transferred in 3.913826 secs (53583169 bytes/sec)
foghornleghorn# dd if=/dev/zero of=/usr/zerofile.000 bs=1M count=200
200+0 records in
200+0 records out
209715200 bytes transferred in 4.436917 secs (47265975 bytes/sec)

foghornleghorn# dd if=/dev/zero of=/tank/zerofile.000 bs=1M count=200
200+0 records in
200+0 records out
209715200 bytes transferred in 0.377800 secs (555095486 bytes/sec)
foghornleghorn# dd if=/dev/zero of=/tank/zerofile.000 bs=1M count=200
200+0 records in
200+0 records out
209715200 bytes transferred in 0.140478 secs (1492869742 bytes/sec)
foghornleghorn# dd if=/dev/zero of=/tank/zerofile.000 bs=1M count=200
200+0 records in
200+0 records out
209715200 bytes transferred in 0.140452 secs (1493143431 bytes/sec)

foghornleghorn# dd if=/dev/zero of=/tank/zerofile.000 bs=1M count=2000
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 8.117563 secs (258347487 bytes/sec)
foghornleghorn# dd if=/dev/zero of=/tank/zerofile.000 bs=1M count=2000
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 8.251862 secs (254142882 bytes/sec)
foghornleghorn# dd if=/dev/zero of=/tank/zerofile.000 bs=1M count=2000
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 8.307188 secs (252450287 bytes/sec)

foghornleghorn# dd if=/dev/da0 of=/dev/null bs=1M count=2000
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 18.958791 secs (110616336 bytes/sec)
foghornleghorn# dd if=/dev/da0 of=/dev/null bs=1M count=2000
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 18.924833 secs (110814822 bytes/sec)
foghornleghorn# dd if=/dev/da0 of=/dev/null bs=1M count=2000
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 18.893001 secs (111001529 bytes/sec)

foghornleghorn# dd if=/tank/zerofile.000 of=/dev/null bs=1M
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 5.156406 secs (406708089 bytes/sec)
foghornleghorn# dd if=/tank/zerofile.000 of=/dev/null bs=1M
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 5.126920 secs (409047148 bytes/sec)
foghornleghorn# dd if=/tank/zerofile.000 of=/dev/null bs=1M
2000+0 records in
2000+0 records out
2097152000 bytes transferred in 5.145461 secs (407573211 bytes/sec)

Here are my relevant settings:

vfs.zfs.prefetch_disable=0
vfs.zfs.zil_disable="1"

Other than that, I'm trusting FreeBSD's default settings, and they seem to
be working pretty well.

On Sun, Feb 14, 2010 at 3:34 PM, Michael Loftis <mloftis at wgops.com> wrote:

>
>
> --On Sunday, February 14, 2010 5:28 PM +0000 Jonathan Belson <
> jon at witchspace.com> wrote:
>
>  Hiya
>>
>> After reading some earlier threads about zfs performance, I decided to
>> test my own server.  I found the results rather surprising...
>>
>>
> You really need to test with at least 4GB of data, else you're just testing
> caching speeds on writing.  Use a test suite like bonnie++ and you'll see
> just how poor the ZFS performance is, especially with multiple readers on
> the same file, atleast in 8.0.
>
> _______________________________________________
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>



-- 
Joshua Boyd
JBipNet

E-mail: boydjd at jbip.net

http://www.jbip.net