Roy Lyseng wrote:
Jay Pipes wrote:
Roy Lyseng wrote:
Brian,
do you have a breakdown of the cost of the various modules in a
bread-and-butter query? I am most interested in SELECT queries with
small result sets...
By "modules" do you mean runtime vs optimizer vs. protocol (send) or
do you mean JOIN::prepare vs. JOIN::optimize vs JOIN::execute?
As far as you can go :) Breaking up into preparation, execution, storage
engine and protocols would be a good start, but the more information,
the better... Preparation could again be broken up into lexer, parsing,
translation (JOIN::prepare) and optimization.
Understood. :) Brian and I are working on some callgrind pieces to the
Drizzle automation suite which would run callgrind profiles on each
revision for basic queries, so that we can compare # ops in the call
stacks for each revision. I'll keep you updated as to where the grind
files end up being pushed to so you can pull one into KCachegrind for
analysis....
Cheers!
Jay
Thanks,
Roy
Cheers!
Jay
Thanks,
Roy
Brian Aker wrote:
Hi!
On May 14, 2009, at 10:05 AM, Kay Röpke wrote:
Next I'll try to get it working for drizzle
Awesome :)
I was just going through the call stack last night for the Lexer and
was amazed at how inefficient the thing is. That thing is chewing
up a ton of CPU...
Cheers,
-Brian
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