Hi Tom, Your suspicion is what I also thought – more classes loaded.
I guess my main question at this point is on the Performance measurement infrastructure, which also seems to indicate a 5.8% degradation on startup performance: http://download.eclipse.org/eclipse/downloads/drops4/S-4.5M6-201503200800/performance/performance.php I know that Equinox can trace bundle activations, and some independent measurement of mine show these were actually reduced (80 in Kepler, 77 in Luna, 75 in Mars). Could the framework also trace the names of classes loaded as part of this scenario (both in the baseline, and latest builds) ? Then by comparison, one could probably identify classes that should not be loaded ? Other question goes to Platform/UI and e4 – the second largest contributor to startup time – are there any known inefficiencies, any plans to look at performance in M7 ? Thanks, Martin -- Martin Oberhuber, SMTS / Product Owner – Development Tools, Wind River direct +43.662.457915.85 fax +43.662.457915.6 From: [email protected] [mailto:[email protected]] On Behalf Of Thomas Watson Sent: Thursday, March 26, 2015 3:03 PM To: Equinox development mailing list Subject: Re: [equinox-dev] Eclipse Startup Performance Hi Martin, There are no plans as of now to work on a performance issue at the framework level. I'm not saying I would not work on a performance issue, just that I am unaware of a performance issue in the framework that contributes to the slowdown you have observed. I'm not sure how to interpret the PDF you sent. I'm unsure what the various columns mean. My guess is that each release we have more bundles with more classes to load which contribute to more time to start. This is especially true if you are comparing Luna vs Mars and see a slower time to start. The Luna and Mars framework implementations are virtually identical so my initial guess is we are loading more code to start Eclipse. Tom From: "Oberhuber, Martin" <[email protected]<mailto:[email protected]>> To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: 03/26/2015 08:40 AM Subject: [equinox-dev] Eclipse Startup Performance Sent by: [email protected]<mailto:[email protected]> ________________________________ Hello Equinox and Platform/UI committers, We recently measured startup performance of our IDE based on Eclipse. We measured 4 milestones: - 20140325 (based on Kepler SR2), - 20141014 (based on Luna SR1), - 20150224 (based on Luna SR2) - 20150224+mars (based on Mars M5a). Attached are the findings in summary: for each milestone, the left-hand column has CPU time in milliseconds, relative % within the milestone, and the delta compared to the previous milestone. The sad news are that startup performance got worse on every iteration – from 8 seconds with Kepler SR2, to almost 10 seconds with Mars M5a. We used JProfiler to measure warmstart performance after a couple of “restarts” into a Workspace that includes a C/C++ project and had an editor open. Then, in JProfiler we filtered-out any JDK and JFace packages and made their numbers aggregate up to the callers; Finally, we accumulated numbers by package prefix to see who’s the biggest contributors to startup time. We didn’t see any truly significant performance hit, but still the gentle decrease in performance does feel like a “death of a 1000 cuts” issue. Given that M7 is traditionally a “Performance Milestone”, I was wondering what the committers thought: Are there any known performance issues that were already planned to be addressed ? Looking at http://download.eclipse.org/eclipse/downloads/drops4/S-4.5M6-201503200800/performance/performance.php I see a 5.8% performance decrease on the “Core UI Startup” fingerprint. Can that be seen as representative for the average user’s IDE startup experience ? How would it compare to a Kepler, or Eclipse 3.8.2 baseline ? I would be interested in hearing any thoughts. Thanks! Martin -- Martin Oberhuber, SMTS / Product Owner – Development Tools, Wind River direct +43.662.457915.85 fax +43.662.457915.6[attachment "201502.pdf" deleted by Thomas Watson/Austin/IBM] _______________________________________________ equinox-dev mailing list [email protected]<mailto:[email protected]> To change your delivery options, retrieve your password, or unsubscribe from this list, visit https://dev.eclipse.org/mailman/listinfo/equinox-dev
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