I'll incorporate that if you paste the source. However I cannot see something like a "boost" compared to the original version and that is quit logical, because the test runs up to 1 million jobs each performing a 100 iteration computing loop, so the duration of this dwarfes the overhead of initializing an actor system .. but anyway, maybe it helps at least you are the AKKA pro's :-)
Am Dienstag, 7. Januar 2014 14:37:21 UTC+1 schrieb drewhk: > > Well, apart from other side-effects creation of an ActorSystem at least > results in the attempt of loading and assembling the configuration, so it > is preferrable to reuse the same system between runs. > > > On Tue, Jan 7, 2014 at 2:23 PM, Patrik Nordwall > <[email protected]<javascript:> > > wrote: > >> As pointed out I do think the creation and shutdown of the actor systems >> influence the results. I tried to run your code and after changing to one >> actor system my results are: >> >> average 1 threads : 614 >> average 2 threads : 309 >> average 3 threads : 250 >> average 4 threads : 190 >> average 5 threads : 159 >> average 6 threads : 141 >> average 7 threads : 162 >> average 8 threads : 157 >> average 9 threads : 156 >> average 10 threads : 145 >> average 11 threads : 140 >> average 12 threads : 134 >> average 13 threads : 133 >> average 14 threads : 131 >> average 15 threads : 138 >> average 16 threads : 136 >> >> Compared to PiThreaded: >> average 1 threads : 495 >> average 2 threads : 263 >> average 3 threads : 179 >> average 4 threads : 146 >> average 5 threads : 137 >> average 6 threads : 128 >> average 7 threads : 122 >> average 8 threads : 122 >> average 9 threads : 122 >> average 10 threads : 123 >> average 11 threads : 122 >> average 12 threads : 123 >> average 13 threads : 123 >> average 14 threads : 122 >> average 15 threads : 124 >> average 16 threads : 125 >> >> Cheers, >> Patrik >> >> >> On Tue, Jan 7, 2014 at 1:32 PM, Rüdiger Möller >> <[email protected]<javascript:> >> > wrote: >> >>> >>> >>> Am Dienstag, 7. Januar 2014 11:57:54 UTC+1 schrieb √: >>> >>>> You definitely want to play around with the configuration and make sure >>>> that you are benchmarking correctly: https:// >>>> stackoverflow.com/questions/504103/how-do-i-write-a- >>>> correct-micro-benchmark-in-java >>>> >>>> >>> I know the details regarding VM warmup and how to avoid in-place >>> JIT'ing. I am iterating the bench 30 times, only take the average times of >>> last 10 iterations (20 iterations warmup), see mainloop i added to the >>> original AKKA sample. Also the benchmark is not in the nanos, but several >>> hundred millis per iteration. >>> >>> >>>> dispatcher throughput, thread pool type and thread pool size, and >>>> mailbox type. >>>> >>> >>> can you be more specific pls (Code!). The use case is many short running >>> computations with contention created when aggregating the result. >>> >>> >>>> >>>> Also, Opterons have pretty bad cache performance for inter-core comms >>>> (Intel uses inclusive L3s for faster on-package caches) >>>> >>>> >>> Well the other benches use the same hardware. >>> I am currently repeating the test on a dual socket x 6 core intel xeon >>> (so 12 cores, 24Hardware-Threads). With Akka still being worst one by far. >>> >>> >>>> Cheers, >>>> √ >>>> >>>> >>>> On Tue, Jan 7, 2014 at 11:49 AM, Endre Varga <[email protected]>wrote: >>>> >>>>> Hi Rüdiger, >>>>> >>>>> Have you tried to play around with the throughput setting of the >>>>> dispatcher? For these kind of non-interactive jobs fairness is not an >>>>> issue, so you might most likely want to increase that value. >>>>> >>>>> -Endre >>>>> >>>>> >>>>> On Tue, Jan 7, 2014 at 1:26 AM, Rüdiger Möller <[email protected]>wrote: >>>>> >>>>>> Please checkout chart here. >>>>>> >>>>>> https://plus.google.com/109956740682506252532/posts/1hKcYyPuJzh >>>>>> >>>>>> [cut&pasted from g+]: >>>>>> Hey folks, i am currently writing a blog benchmarking akka vs >>>>>> traditional threading. I use the example provided by the akka java >>>>>> tutorial >>>>>> computing Pi. In order to compare the abillity to paralellize big >>>>>> amounts >>>>>> of tiny jobs, i use Pi-computaional slices of 100,000 jobs with >>>>>> iteration >>>>>> of 1000. >>>>>> Hardware is dual socket AMD opteron with each 8 real cores and 8 >>>>>> 'virtual' (because the test uses floating point i just scale to 16 >>>>>> threads >>>>>> instead of 32). >>>>>> >>>>>> As you can see in the chart AKKA (2.03) performs very bad compared to >>>>>> threads and a homebrew actor lib. >>>>>> >>>>>> source of akka bench is here: https://gist.github.com/ >>>>>> RuedigerMoeller/8272966 >>>>>> (added outer loop to original typesafe sample) >>>>>> >>>>>> Is there anything I miss or is this 'normal' Akka performance ? >>>>>> >>>>>> Threading-style code is here: https://gist.github.com/ >>>>>> RuedigerMoeller/8273307 >>>>>> >>>>>> I tried 2.1 with even worse results. >>>>>> >>>>>> http://imgur.com/TAt9XOf >>>>>> >>>>>> -- >>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>> >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >>>>>> >>>>>>>>>> Search the archives: https://groups.google.com/ >>>>>> group/akka-user >>>>>> --- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Akka User List" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected]. >>>>>> To post to this group, send email to [email protected]. >>>>>> >>>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>> >>>>> >>>>> -- >>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>> >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >>>>> >>>>>>>>>> Search the archives: https://groups.google.com/ >>>>> group/akka-user >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Akka User List" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> To post to this group, send email to [email protected]. >>>>> >>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>> >>>> >>>> >>>> >>>> -- >>>> Cheers, >>>> √ >>>> >>>> * Viktor Klang* >>>> *Director of Engineering* >>>> Typesafe <http://www.typesafe.com/> >>>> >>>> Twitter: @viktorklang >>>> >>> -- >>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>> >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >>> >>>>>>>>>> Search the archives: >>> https://groups.google.com/group/akka-user >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "Akka User List" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected] <javascript:>. >>> To post to this group, send email to [email protected]<javascript:> >>> . >>> Visit this group at http://groups.google.com/group/akka-user. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> >> >> -- >> >> Patrik Nordwall >> Typesafe <http://typesafe.com/> - Reactive apps on the JVM >> Twitter: @patriknw >> >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected]<javascript:> >> . >> Visit this group at http://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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