On 2013-08-19 22:12, Dominique Pellé wrote: > In this example, the speed up is +37.5%. Useful speed up, but at the > same time I was hoping for more speed up given that I have 4 > cores on my i5 laptop.
I just tried this: I added performance measuring around just the part that's really parallel, i.e. I added System.currentTimeMillis() calls around this line in JLanguageTool: final List<RuleMatch> ruleMatches = performCheck(analyzedSentences, sentences, allRules, paraMode); Using the PerformanceTest class with a 30KB file, I get these numbers after warm-up: 1 thread : 1800ms 2 threads: 1200ms 4 threads: 950ms So for the part that is really parallelized I get twice the speed. Considering that my CPU only has two real cores and the other two are kind of virtual cores added by hyper-threading, maybe that's just the expected behaviour? Regards Daniel -- http://www.danielnaber.de ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ Languagetool-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/languagetool-devel
