[linux-cifs-client] Re: debugging dbench to track performance
Jeremy Allison
jra at samba.org
Sat Jul 15 20:58:48 GMT 2006
On Sat, Jul 15, 2006 at 03:07:23PM -0500, Steve French wrote:
> >
> If that is right - that would be quite impressive performance (similar
> to local dbench performance on my laptop - albeit one with a slow disk)
This is a loopback dbench onto a CIFS mounted drive. It's a 2 processor
multi-core 2.7 GHz box with 2 gigs or ram.
> - sanity check by running the same thing against a local directory would
> be helpful (just to make sure, if you have not already done, that it is
> hitting the network mount rather than a local target). Based on the
> output you posted though I am not convinced that you are running tdbench
> 3.04 since with default build and run options, dbench 3.04 prints
> something like e.g.
>
> stevef at smf-t41p:~/Desktop/dbench-3.04> ./dbench 70
> dbench version 3.04 - Copyright Andrew Tridgell 1999-2004
>
> Running for 600 seconds with load '/usr/local/share/client.txt' and
> minimum warmup 120 secs
> 70 clients started
> 70 153 217.56 MB/sec warmup 1 sec
> 70 178 130.99 MB/sec warmup 2 sec
> 70 543 139.89 MB/sec warmup 3 sec
> 70 817 156.32 MB/sec warmup 4 sec
> 70 830 129.48 MB/sec warmup 5 sec
> etc.
>
> I downloaded dbench from
> http://samba.org/ftp/tridge/dbench/dbench-3.04.tar.gz but as that is a
> year or two old, ie January 2005, (although it appears to be the newest
> version I could find) - you may have found a newer version somehow.
> Where did you get your version from?
That's where I got mine from.... Ah - never mind. Bad path :-).
(Must be getting the old one installed on the system...). Here are the
new numbers from loopback.
Throughput 4.32635 MB/sec 70 procs
real 12m26.077s
user 0m14.565s
sys 8m13.995s
Jeremy.
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