Re: Joel's Performance Issues WAS : Opteron vs Xeon - Mailing list pgsql-performance

Joel,

> I did not see any marked improvement, but I don’t think my issues are
> related to the hardware.

If you won't believe it, then we certainly can't convince you.  AFAIK your bad
view is a bad query plan made worse by the Dell's hardware problems.

> I am giving up on postgres and three developers two months of work and
> trying MYSQL.

I'd suggest testing your *whole* application and not just this one query.  And
remember that you need to test InnoDB tables if you want transactions.

>
> I have posted several items and not got a response (not that I expect folks
> to drop everything). I want to thank everyone who has been of help and
> there are several.

Hmmm ... I see about 25 responses to some of your posts on this list.
Including ones by some of our head developers.   That's more than you'd get
out of a paid MSSQL support contract, I know from experience.

If you want anything more, then you'll need a "do-or-die" contract with a
support company. If your frustration is because you can't find this kind of
help than I completely understand ... I have a waiting list for performance
contracts myself.  (and, if you hired me the first thing I'd tell you is to
junk the Dell)

> I really like the environment and feel I have learned a lot in the past few
> months, but bottom line for me is speed. We bought a 30K Dell 6650 to get
> better performance.

Would have been smart to ask on this list *before* buying the Dell, hey?  Even
a Google of this mailing list would have been informative.

> I chose PG because MSSQL was 70K to license. I believe
> the MYSQL will be 250.00 to license for us, but I may choose the 4k
> platinum support just to feel safe about having some one to touch base with
> in the event of an issue.

Hmmm ... you're willing to pay MySQL $4k but expect the PG community to solve
all your problems with free advice and a couple $100 with CMD?   I sense an
apples vs. barca loungers comparison here ...

> I am not sure I am walking away feeling real good about
> postgres, because it just should not take a rocket scientist to get it to
> work, and I used to think I was fairly smart and could figure stuff out and
> I hate admitting defeat (especially since we have everything working with
> postgres now).

While I understand your frustration (I've been frustrated more than a few
times with issues that stump me on Linux, for example) it's extremely unfair
to lash out at a community that has provided you a lot of free advice because
the advice hasn't fixed everything yet.  By my reading, you first raised your
query issue 6 days ago.  6 days is not a lot of time for getting *free*
troubleshooting help by e-mail. Certainly it's going to take more than 6 days
to port to MySQL.

--
--Josh

Josh Berkus
Aglio Database Solutions
San Francisco