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Gullden
Post subject: Benchmark disks in Linux  PostPosted: Oct 19, 2004 - 14:50
Elderman
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Joined: Jan 24, 2004
Posts: 305
Location: location
I'm looking for a tool or some kind of benchmark program to test
the performance of my disks. I have been looking around the net
and there are several benchmark programs out there, is there
anyone here who knows of a good tool/benchmark that I can use
to test the performance of my disks.

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gunne
Post subject:   PostPosted: Oct 19, 2004 - 15:38
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hdparm or dd ?

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dholm
Post subject:   PostPosted: Oct 19, 2004 - 16:34
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It depends on whether you are benchmarking a drive or a filesystem and what conditions you are interested in. Good filesystem benchmarks can be made with one of the following software: http://www.iozone.org/, http://sourceforge.net/projects/tiobench/, or http://www.coker.com.au/bonnie++/.

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gunne
Post subject:   PostPosted: Oct 19, 2004 - 17:03
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gunne@debian:~$ dd if=/dev/hda3 of=/dev/null bs=1024000
19531+1 records in
19531+1 records out
19999752192 bytes transferred in 437.086302 seconds (45756987 bytes/sec)
gunne@debian:~$

Smile

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dholm
Post subject:   PostPosted: Oct 19, 2004 - 18:02
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How many applications do you have that write in 1GB blocks?

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gunne
Post subject:   PostPosted: Oct 19, 2004 - 18:29
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dholm:

Well, at least this one can manage it Wink

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dholm
Post subject:   PostPosted: Oct 19, 2004 - 18:47
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Manage, yes. But it isn't a realistic benchmark.

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gunne
Post subject:   PostPosted: Oct 19, 2004 - 20:35
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How about this one then ?

root@debian:~# dd if=/dev/hda5 of=/dev/null bs=16k
1344183+0 records in
1344183+0 records out
22023106560 bytes transferred in 436.285868 seconds (50478615 bytes/sec)
root@debian:~#

Clarification for above. It tells me how many bytes/sec, (how many bytes transfered and how long time this took), I can read from the specified drive /dev/hda5 with a specified blocksize to a place 'nowhere' /dev/null.

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Last edited by gunne on Oct 20, 2004 - 06:45; edited 4 times in total
 
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Gullden
Post subject:   PostPosted: Oct 19, 2004 - 22:25
Elderman
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Posts: 305
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I have been playing around with http://sourceforge.net/projects/tiobench/ and it's
really promising. It think this is the tool I was looking for.

I'm going to setup a test-enviroment for tiobench, more info about this later.. Wink

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