Hi all,

Looking back over the eWeek benchmark that's linked to from www.innodb.com 
(where MySQL is a match for Oracle), I made a few observations.

Firstly, both MySQL and Oracle achieved basically identical performance 
levels. This puzzles me as many tests I have seen online show MySQL totally 
dominating Oracle 9i in various environments. Is this indicative of some 
bottleneck being encounted by both engines?

Secondly, the reviewers say that MySQL's performance is largely due to it's 
query cache. They go on to say that performance dropped by two thirds when 
disabled. Additionally, they reckon that MySQL is unique in having this 
feature. Is this true? If it is true, what exactly are the other DB engines 
doing to acheive their performance levels??

Thirdly, does anyone have anything to say about what MySQL 4.0.x's performance
is like today relative to that test. Better? Worse? The same for all intents 
and purposes? The fact that various things have happened with Connector/J 
would surely impact positively.

Lastly, looking at the MS SQL Server benchmarks on a .NET setup, what would 
everyone speculate about MySQL's performance in that setup? Is .NET really 
that much more efficient for this sort of application?

Regards,

Chris

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