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From Emmanuel Lecharny <>
Subject [Performance] 1.5 versus 1.0, take 2
Date Fri, 16 Mar 2007 08:48:04 GMT
Hi gang,

I have done some more preliminary tests, after having introduced some 
more optimizations in the 1.5 server :
- serialization of entries is now handled directly instead of relying on 
default serialization.

The test is the same : 10K searches on my poor desktop (one 3Ghz CPU, 
server launched with 512M, no tuning at all - out of the box server.xml - )
To be very clear : these tests where run in order to see what kind of 
performance increase we could obtain from those modifications.

Here are the results :
ADS 1.0.2 SNAPSHOT : a maximum of 250 req/s
ADS 1.5.0 SNAPSHOT : a maximum of 135 req/s
ADS 1.5.0 tuned : a maximum of 435 req/s

This is a 75% improvment above the 1.0.2 version, which is quite 
impressive. Note that the injector and the server where running on the 
same machine, thus limitating any conclusion we can make regarding the 
real performance of the server.

I will conduct some more tests in a few weeks, with more powerfull 
servers an with an injector, to get more realistic numbers. Any help 
would be welcomed (for instance, ssh access to some computer somwhere... 
I don't have a 8 CPU server with 4 injectors at home ;)

Emmanuel L├ęcharny

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