Make Big Things Run Again! Insights on Eclipse Platform Performance Tunings (EclipseCon 2018)

Transcript

1. MAKE BIG THINGS
 RUN AGAIN! Karsten Thoms - itemis AG INSIGHTS ON ECLIPSE PLATFORM PERFORMANCE TUNINGS
2. About • Since 2003 @itemis • Background with Enterprise Applications • Specialised in Language Engineering, Code Generation, Toolchain Development, DevOps • Eclipse Committer since 10 years • Open Source / Eclipse Evangelist @kthoms @itemis @yourkit #performance @jcon_conference https://github.com/kthoms
3. xxxxxxxxxxxx When you wait for your IDE
4. https://www.flickr.com/photos/bagogames/24707027581
 "The Flash: "Fast Lane" Review - Face Punching Galore“. © BagoGames under CC BY 2.0 SPEED !
5. Where performance matters • Startup Time • UI Responsiveness • Project Build • p2 (Software Install / Update) • Operations on large data sets • Memory Consumption • Garbage Collection …
6. Also small improvements matter
7. If something is slower than expected… Start a Profiler and measure your use case !
8. @jcon_conference @yourkit #performance @kthoms @itemis WHAT YOU’LL SEE
9. Performance work 
 in Photon & 2018-09
10. Search Tree Expansion
11. Search Tree Expansion
12. Startup Time Fedora Linux
13. Single Thread Build
14. Parallel Project Build
15. Parallel Project Build
16. macOS SWT Event Dispatching
20. Import Projects from Git Repository
21. Throttler API
22. Throttler API
23. Fixed UI Freezes • Bug#539470: Opening package in the Project Explorer in hierarchical presentation mode • Bug#533230: EGit Repositories view blocks Eclipse on startup • Bug#533198: EGit Branch name page on large repositories • Bug#520069: Suppress label recalculation in tree viewers on filter change Thanks to @bananeweizen
24. String#replaceAll
25. https://bugs.eclipse.org/bugs/show_bug.cgi?id=532072
29. Check for Updates https://bugs.eclipse.org/bugs/show_bug.cgi?id=532190
30. Avoid Exceptions as Return Value https://bugs.eclipse.org/bugs/show_bug.cgi?id=522103
31. Avoid Exceptions as Return Value
32. Avoid Exceptions as Return Value WhitespaceCharacterPainter#drawLineRange ----------------------------------------- Time #IAE Before 4959ms 10763 After 3384ms 0
33. Memory Profiling
34. Zero Length Arrays https://bugs.eclipse.org/bugs/show_bug.cgi?id=532545
35. Zero Length Arrays
36. Zero Length Arrays https://bugs.eclipse.org/bugs/show_bug.cgi?id=532364
37. Zero Length Arrays https://bugs.eclipse.org/bugs/show_bug.cgi?id=532364
38. Optimize Data Structures https://bugs.eclipse.org/bugs/show_bug.cgi?id=519085
39. Optimize Data Structures https://bugs.eclipse.org/bugs/show_bug.cgi?id=519085
40. Optimize Data Structures https://bugs.eclipse.org/bugs/show_bug.cgi?id=519085
41. ClasspathAccessRule
42. https://bugs.eclipse.org/bugs/show_bug.cgi?id=532505
44. With introduced Cache
45. but…
46. Regression :( https://bugs.eclipse.org/bugs/show_bug.cgi?id=536990 Delivered with Photon Fixed in 2018-09
49. Performance Tests
50. Performance Tests
51. Challenges • Code must be backward compatible => No API change • Makes usage of new concurrent patterns hard to impossible
 => Blocks multi-threading and non-blocking processes • SWT: Native skills
52. Slow scrolling on macOS https://bugs.eclipse.org/bugs/show_bug.cgi?id=366471
53. Slow scrolling on macOS
54. Text Search with many fast results https://bugs.eclipse.org/bugs/show_bug.cgi?id=535752
55. Processing in UI Thread
56. Still many freezes
57. Java Project Wizard
58. Java Project Wizard http://eclip.se/eY
59. Startup Time
60. Challenges • Preserving API Compatibility • Makes usage of new concurrent patterns hard to impossible
 => Blocks multi-threading and non-blocking processes • SWT: Deep Native knowledge required • Regressions
61. Every small improvement in platform is saving time, money and nerves for millions of developers every day
62. We need your help! https://pixabay.com/de/usa-uncle-sam-i-want-you-armee-49909/