From: Andrew Morton <akpm@digeo.com>
> Paolo Ciarrocchi wrote:
> >
> > > it appears that this benefit came from the special usercopy code.
> > > What sort of CPU are you using?
> >
> > It is a PIII@800.
>
> hm, don't know. I built the latest postgres locally. Perhaps the
> alignment of some application buffer is different.
I don't know.
I've built the osdb test while I've just installed postgres
from the Mandrake 9 standard installation (so i586.rpm).
May be we are using different version of postgres...
Anyway, my test show that there is a lack of performance
in 2.5.* is the kernel fits in a machine with low memory,
any hint ?
And probably the "standard" swappiness value is not the
optimal, I'd like to see a few tests with the contest
tool ;-)
Ciao,
Paolo
-- ______________________________________________ http://www.linuxmail.org/ Now with POP3/IMAP access for only US$19.95/yrPowered by Outblaze - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Dec 31 2002 - 22:00:08 EST