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
