AW: [Samba] Performance problem when writing large files!

[Dag Wieers]

On Wed, 25 May 2005, Josef.Fuchs at leykam.com wrote:

> Because we don't use ATA harddiscs, I think the UDMA setting can't be the problem. Alle the discs are mounted on the Mylex RAID controller. Just the TAPE drive uses the Adaptec SCSI (dptio) controller.
> 
> I think, with this knowledge, that this list is no longer responsible for this problem and I don't want to flood lists with off topic messages. Maybe you can recommend me a list, where you think that I can ask about the problem.

I am very interested if you could try dstat to relate those counters. 
Doing something like:

[dag at emyn ~]$ dstat -cdify 
-------cpu0-usage------ --disk/hda----disk/hdc- -------------interrupts------------ ---system--
usr sys idl wai hiq siq|_read write:_read write|__1__ __5__ __9__ __12_ __14_ __15_|_int_ _csw_
 22   3  73   2   0   0|  53k   43k:7232B    0 |   3   142    41    21     5     1 |1214   850 
  8   2  90   0   0   0|   0     0 :   0     0 |   0   172     0     3     0     0 |1174  1007 
  7   2  91   0   0   0|   0    40k:   0     0 |   0   173     3     3     4     1 |1185   951 
  7   3  90   0   0   0|   0     0 :   0     0 |   0   172     0    15     0     0 |1188  1008 

may give a better view of what is going on. I'm also interested in what 
counters you would like to see in addition to the different plugins dstat 
currently has.

I'm very interested to add samba counters (similar to the gpfs counters I 
currently have), but Samba needs to be recompiled to enable any 
performance data, so it becomes less usable for most people.

You can find dstat at:

	http://dag.wieers.com/home-made/dstat/

Any feedback is welcome.
--   dag wieers,  dag at wieers.com,  http://dag.wieers.com/   --
[all I want is a warm bed and a kind word and unlimited power]