Re: Performance of PostgreSQL on Windows vs Linux

Hey Jim -

Thanks for the feedback. The server has dual Xeons with HyperThreading
enabled - so perhaps I should try disabling it. How much performance
boost have you seen by disabling it? Of course, the bottleneck in my
case is more on the I/O or RAM side, not the CPU side.

Jeremy Haile

On Wed, 10 Jan 2007 14:15:26 -0600, "Jim C. Nasby" <jim(at)nasby(dot)net> said:
> On Wed, Jan 03, 2007 at 12:24:24PM -0500, Jeremy Haile wrote:
> > I am sure that this has been discussed before, but I can't seem to find
> > any recent posts. (I am running PostgreSQL 8.2)
> >
> > I have always ran PostgreSQL on Linux in the past, but the company I am
> > currently working for uses Windows on all of their servers. I don't
> > have the luxury right now of running my own benchmarks on the two OSes,
> > but wanted to know if anyone else has done a performance comparison. Is
> > there any significant differences?
>
> One thing to consider... I've seen a case or two where pgbench running
> on windows with HyperThreading enabled was actually faster than with it
> turned off. (General experience has been that HT hurts PostgreSQL). I
> suspect that the windows kernel may have features that allow it to
> better utilize HT than linux.
>
> Of course if you don't have HT... it doesn't matter. :)
> --
> Jim Nasby jim(at)nasby(dot)net
> EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)