Poor mysql scaling across the board pre 5.1.22?
alfred at freebsd.org
Wed Nov 28 11:51:51 PST 2007
* Kris Kennaway <kris at FreeBSD.org> [071128 11:13] wrote:
> Steven Hartland wrote:
> >Some interesting comments here:
> Indeed, mysql 5.0 has poor scaling compared to postgresql (this affects
> reads but severely affects writes). However when I tested the latest
> beta of 5.1 about 6 months ago I found it had about 50% lower
> performance than 5.0 in a read-only configuration. Maybe they had left
> some debugging enabled or have since fixed it.
One thing that mysql can suffer from is the lack of row level locking
for MYISAM tables, I found that to be a write performance killer with
multiple concurrent accesses.
INNODB is supposedly better.
- Alfred Perlstein
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