A year ago when the CSS extension was a community module,
I posted that when moving from GeoServer 2.2 to 2.3 it had become much slower saving and auto-checking CSS.
At the time David Winslow queried if it was memory related and he also said that he had some performance improvements that he had been sitting on.
Trying now on GeoServer 2.5 with multiple Xmx (1024M/2048M)and MaxPermSize (128m/256m) setting,
I still find that the performance is still very poor and makes the extension problematic to use and prevents me upgrading.
Please, please tell me that something can be done about this.
Many thanks,
Simon Hartley
P.S.
When profiling, the method that takes most time (85s) is: scala.collection.immutable.StringLike#toDouble.
When I took up the implementation, it delegates to java.lang.Double.parseDouble.
Second is scala.runtime.ScalaRunTime#hash (11s).
Third is scala.collection.LinearSeqOptimized#sameElements (2s)
Fourth is org.geoscript.geocss.DataSelector#filterOpt (1.4s)
If I connect later while it’s still going:
second is scala.collection.AbstractIterator#forAll and third is scala.collection.AbstractIterator#exists;
scala.collection.immutable.StringLike#toDouble has hit 1800s (30 minutes) by this point.
.
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I am tempted to seek funding to port it to Java so it can be more easily maintained.