Investigate png encoding performance dropdown at gs 1.5
-------------------------------------------------------
Key: GEOS-1354
URL: http://jira.codehaus.org/browse/GEOS-1354
Project: GeoServer
Issue Type: Improvement
Components: WMS
Affects Versions: 1.6.0-beta3, 1.5.3
Reporter: Andrea Aime
Assignee: Andrea Aime
Fix For: 1.5.4, 1.6.0-beta4
Some benchmarking shows we did become slower at generating png maps from geoserver 1.5 onwards.
The timings for the same benchmark on the three gs are:
{code}
gs 1.3.4
1 10 192
2 20 432
4 40 723
8 80 1551
gs 1.4.1
1 10 176
2 20 438
4 40 695
8 80 1617
gs 1.5.3
1 10 195
2 20 662
4 40 1240
8 80 1903
gs 1.6.0 beta3
1 10 190
2 20 380
4 40 793
8 80 1622
{code}
since 1.6 beta3 saw quite some speed improvements that did not exist
in previous releases and since this benchmark does not use any
kind of attribute oriented styling, it's safe to suppose the slowdown
it's either in the output strategies or in the png encoder (jai may
limit concurrency). Profiling will hopefully give some hint.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.codehaus.org/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira