Hi I found some other rooms for optimisations such as - invoking the base of the core type converters faster - jmx mbean of processors in the routes is using advice over wrapped processor to reduce garbage collection - simple language now caches evaluated expressions/predicates which yields faster evaluation when nested functions are used - reduced the number of objects allocated at runtime to reduce garbage collection
On Fri, Jun 23, 2017 at 8:42 PM, Claus Ibsen <claus.ib...@gmail.com> wrote: > Hi > > Just a little status update, that after a bunch of different > optimisations, then the YourKit profiler is now down to showing that > the type converter registry and the uuid generator is potential > hot-spots, where the former is used a lot and we can optimise the > conversions for the core converters which I have logged a ticket > about. And the latter generates an string uuid for each exchange which > is a little bit long. As its sequencer based and have a fixed prefix, > then maybe there is some clever optimisation (essentially only the > sequence is different as they share the same prefix/seed). But its > already optimise as much by adding two strings together via > StringBuilder. > > > > On Fri, May 26, 2017 at 3:59 PM, Claus Ibsen <claus.ib...@gmail.com> wrote: >> Hi >> >> We have found a few spots to optimize the camel-core source code for >> thread contention and something else. >> >> You can use a profile tool such as YourKit which is excellent at >> identifying spots and visualizing what goes on in the JVM. >> >> We have used it in the past to optimise stuff. However recently Luca >> asked about making Camel startup faster: >> https://issues.apache.org/jira/browse/CAMEL-11321 >> >> And although fast startup is not excatly the same as runtime >> performance then they are still related. A profile can help identify >> places for improvements. >> >> I have pushed a sample project at >> https://github.com/davsclaus/camel-profile-sample >> >> You can then run this via >> >> mvn spring-boot:run >> >> And then attach YourKit profiler. >> >> However if you use IDEA then you can start YourKit, then from YourKit >> you can choose Integrate with IDE ... and then chose IDEA and then say >> ok even if IDEA is also running. >> >> In IDEA you should see a YourKit icon if you right-click on the >> SampleCamelApplication to run this application, then you can chose >> that to profile, and it run the app with profiler. >> >> You then switch to YourKit and you should start see data. >> To check for thread contention, then select the "Monitor Usage" tab, >> and then click the gear button with the play icon "Start Monitor >> Profile" which then starts capture data. >> >> For YourKit you can request a trial license that works for 2 weeks. >> >> >> -- >> Claus Ibsen >> ----------------- >> http://davsclaus.com @davsclaus >> Camel in Action 2: https://www.manning.com/ibsen2 > > > > -- > Claus Ibsen > ----------------- > http://davsclaus.com @davsclaus > Camel in Action 2: https://www.manning.com/ibsen2 -- Claus Ibsen ----------------- http://davsclaus.com @davsclaus Camel in Action 2: https://www.manning.com/ibsen2
