processes not getting fair share of available disk I/O

[Kris Kennaway]

On Thu, Dec 14, 2006 at 04:26:18PM +0000, Dieter wrote:
> > > FreeBSD 6.0
> > 
> > Erk.  How about retrying with something modern ;-)  We do fix lots of
> > bugs over time you know!
> 
> In my defense, 6.0 is only one revision down.  (until 6.2 comes out real soon now)

Or to put it another way, your system is missing 13 1/2 months of
continuous bug fixes :-D

> >> 32.3%Sys  31.5%Intr  0.0%User  0.0%Nice 36.2%Idl   710892 inact    32 3: sio1
> 
> >> 74.8%Sys  25.2%Intr  0.0%User  0.0%Nice  0.0%Idl   828676 inact    36 3: sio1
> 
> > Interrupt CPU usage might be high, but the first thing you should do
> > is retry with 6.2-rc1 and work from there.
> 
> Whoops, the systat -vmstat and vmstat -i were with mutex profiling enabled.
> Sorry about that.  CPU usage is much lower with it off.  85-95% idle when writing.

OK, that's better.  Still, the only thing that fits is some kind of
driver or hardware problem, so check 6.2-rc1 and see if it's still
there.

Kris
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