Re: 2.5.52, load and process in D state

[Andrew Morton]

Paolo Ciarrocchi wrote:
> 
> Hi all,
> I booted 2.5.52 with the following parmater:
> apm=off mem=32M (not sure about the amount, anyway I can reproduce
> the problem for sure with 32M and 40M)
> 
> Then I tried the osdb (www.osdb.org) benchmark with
> 40M of data.
> 
> $./bin/osdb-pg --nomulti
> 
> the result is that aftwer a few second running top I see the postmaster
> process in D state and a lot if iowait.

What exactly _is_ the issue?  The machine is achieving 25% CPU utilisation
in user code, 6-9% in system code.  It is doing a lot of I/O, and is
getting work done.