RE: Servere performance issue with compiled (pre-prepared) querie s - they"re 50% slower than pars

I could send you the test program code and the data files, but you'll need
to write your own routines to read them (the data files).

Basically you'd need to replace our Openfile, Closefile, and ReadRecord
functions with your own. If this is any use to you then drop and affirmative
reply and I'll send them in the morning - I'm off home now.

Kevin Cowley
R&D

Tel: 0118 902 9099 (direct line)
Email: kevin.cowley@alchemetrics.co.uk
Web: http://www.alchemetrics.co.uk

-----Original Message-----
From: Jeremy Zawodny [mailto:Jeremy@Zawodny.com]
Sent: 05 May 2004 19:09
To: Kevin Cowley
Cc: 'sinisa@mysql.com'; Bugs@lists.mysql.com
Subject: Re: Servere performance issue with compiled (pre-prepared) querie s
- they're 50% slower than parsed queries

On Wednesday, May 5, 2004, at 10:38 US/Pacific, Kevin Cowley wrote:

> I've just downloaded the latest snapshot, rebuilt 4.1.2 and re-run the
> tests. The results are below. It looks like the Inserts are now
> quicker, but
> not by much, but the selects are considerably slower.

Any chance you can share the code you used?

I was planning to something similar soon and not having to [re]write
the code would obviously save some time.

If not, I understand.

Thanks,

Jeremy


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