[Samba] Samba performance issues
mmokrejs at natur.cuni.cz
Tue Sep 24 22:52:00 GMT 2002
On 24 Sep 2002, Bradley W. Langhorst wrote:
> On Tue, 2002-09-24 at 18:07, Martin MOKREJŠ wrote:
> > On 24 Sep 2002, Bradley W. Langhorst wrote:
> > > probably you want to run the iostat 1 during heavier load...
> > > however the summary result does look funny to me...
> > >
> > > On my system we have ~ 1:1 ratio of reads to writes
> > > you have a ~ 1:200 ratio of reads to writes.
> > > Does that make sense in your environment?
> > Didn't you have a look into the first lines where's the summary output
> > from iostat?
> sure i did... maybe i'm misreading it
> avg-cpu: %user %nice %sys %idle
> 16.79 0.00 26.39 56.82
> Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
> dev8-0 11.80 2.24 184.95 541354 44609586
> dev8-1 11.80 1.67 184.95 403090 44609586
> Unless I'm mistaken the summary says that (on average) he only has 2
> reads/s vs 185 writes/s
You are right, sure. But my point was why is the *current* load that high.
That's why I had a look on statistics per every second.
> > All those other remaining output lines show zero disk
> > activity ...
> That's why I suggested he run iostat when the system is under more load.
In principal I agree anyway. ;)
> > >
> > > It doesn't look like your system has a memory problem so i'd not worry
> > > about vmstat.
> > I'd would worry. Actually, what says "dmesg" command?
> The reason I think memory is no problem here is:
> Mem: 3229040K av, 3166372K used, 62668K free, 0K shrd, 148480K
> Swap: 513976K av, 0K used, 513976K free 2758060K
> so the swap file has not been touched and there is 2.7gig of disk being
> cached in RAM
Yes, but the "sy" column in the output of vmstat was quite high. That
worries me. ;)
I think we should not Cc: the samba email list to these emails anymore. ;)
Martin Mokrejs <mmokrejs at natur.cuni.cz>, <m.mokrejs at gsf.de>
PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs
MIPS / Institute for Bioinformatics <http://mips.gsf.de>
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