[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.


More information about the linux-cifs-client mailing list