[OpenJDK 2D-Dev] sun.java2D.Pisces renderer Performance and Memory enhancements (original) (raw)

Phil Race philip.race at oracle.com
Wed Apr 17 21:06:17 UTC 2013

whereas on Windows / Mac it is client compiler (c1).

For Mac we only have a 64 bit VM which SFAIK should be c2 as well, yet in that case native was presumably still faster. So its also a matter of factoring in how good the code is that is generated by the C compiler.

-phil.

On 4/17/2013 1:26 PM, Richard Bair wrote:

Also, this is with the Java version, right? Yes, my patch is pure java given as webrev: http://jmmc.fr/~bourgesl/share/java2d-pisces/webrev-1/ <http://jmmc.fr/%7Ebourgesl/share/java2d-pisces/webrev-1/> We got a decent 2x speedup in FX by porting the version of Open Pisces that you started with to C code (all except on Linux where we couldn't find the right gcc options to make it faster than Hotspot). So, we have yet to investigate a native version in the JDK which might provide even more gains… Oleg did more analysis on this and it appears the reason hotspot on Linux was faster than the C version was because on Linux it is -server compiler (c2) whereas on Windows / Mac it is client compiler (c1). Possibly using -server on windows / mac would also have hotspot beating the C version, although that hasn't been tested. Richard

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