Re: Performance tuning on FreeBSD

On Tue, 4 Mar 2008, alan bryan wrote:

> There seems to be something really wrong with disk performance.  Here's
> the results from bonnie

So input speed is reasonable but write throughput is miserable--<10MB/s.
I'd suggest taking this to one of the FreeBSD lists; this doesn't look
like a PostgreSQL problem.

> This is on FreeBSD 7.0-Release.  I tried ULE and 4BSD schedulers with
> no difference.  Maybe I'll try FreeBSD 6.3 to see what that does?

The other thing you might consider is booting with a Linux live CD/DVD
(something like Ubuntu would work) and running bonnie++ from there to see
what you get.  Help to sort out whether this ia a server problem or an OS
one.

--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD