Re: Performance PG 8.0 on dual opteron / 4GB / 3ware - Mailing list pgsql-performance

On Tue, 2005-11-15 at 12:41 -0700, Steve Wampler wrote:
> Joost Kraaijeveld wrote:
> > If I understand correctly (I have 4GB ram):
> >
> > jkr@Panoramix:~/tmp$ dd if=/dev/zero of=bigfile bs=8k count=1000000
> > 1000000+0 records in
> > 1000000+0 records out
> > 8192000000 bytes transferred in 304.085269 seconds (26939812 bytes/sec)
> >
> > Which looks suspicious: 26308 MB/sec???
>
> Eh?  That looks more like ~25.7 MB/sec, assuming 1MB = 1024*1024 bytes.
Oooops. This calculation error is not typical for my testing (I think ;-)).

--
Groeten,

Joost Kraaijeveld
Askesis B.V.
Molukkenstraat 14
6524NB Nijmegen
tel: 024-3888063 / 06-51855277
fax: 024-3608416
e-mail: J.Kraaijeveld@Askesis.nl
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