Considerable slow-down for rule execution (eval?) in 5.2.0 M2
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A simple rule containing an eval with a % b == 0 exhibits a considerable
slowdown when comparing execution times between a Drools core built in
February and the one there is now.
The slow-down factor is 15.
-W
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Tuesday, 26 April
Tue, 26 Apr
5:08 p.m.
New subject: Considerable slow-down for rule execution (eval?) in 5.2.0 M2
On 26/04/2011 15:53, Wolfgang Laun wrote:
A simple rule containing an eval with a % b == 0 exhibits a
considerable slowdown when comparing execution times between a Drools
core built in February and the one there is now.
The slow-down factor is 15.
There is a performance issue with MVEL. We moved to
indexed (array
based) mvel factories, which is suppose to give faster performance.
However the MVEL author has not finished that work completely and so far
they give a performance regression :( I'm pestering him daily on this.
Mark
-W
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