Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.
active 2025-02-28 → 2026-08-08 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 527 days from 2025-02-28 to 2026-08-08. Pushes: 609 total, peak 9 in a day. Pull requests: 910 total, peak 12 in a day. Issues: 868 total, peak 31 in a day. Comments: 6,120 total, peak 76 in a day. Stars: 104 total, peak 13 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| pshipton | 1.3K | 111 | 138 | 641 |
| keithc-ca | 1.2K | 87 | 97 | 625 |
| tajila | 720 | 59 | 58 | 416 |
| JasonFengJ9 | 599 | 0 | 30 | 278 |
| github-actions[bot] | 394 | 0 | 0 | 394 |
| mpirvu | 393 | 30 | 45 | 223 |
| hzongaro | 367 | 19 | 21 | 247 |
| babsingh | 353 | 32 | 38 | 188 |
| r30shah | 324 | 15 | 21 | 190 |
| 0xdaryl | 291 | 39 | 29 | 148 |
| lzhou2025 | 265 | 0 | 6 | 157 |
| hangshao0 | 262 | 39 | 11 | 139 |
| knn-k | 251 | 5 | 28 | 184 |
| gacholio | 243 | 38 | 12 | 132 |
| theresa-m | 240 | 0 | 34 | 137 |
| jdmpapin | 233 | 5 | 23 | 160 |
| dsouzai | 227 | 36 | 37 | 100 |
| zl-wang | 199 | 13 | 11 | 131 |
| amicic | 198 | 16 | 14 | 89 |
| dmitripivkine | 140 | 10 | 18 | 91 |
Recent activity
Latest issues, pull requests and releases
- Issue comment#24399tajila2026-08-07 18:13Fix thread end event lifecycle
- Issue comment#138600xdaryl2026-08-07 18:12OpenJDK java/util/logging/FileHandlerAccessTest.java timeout
- Issue comment#24503keithc-ca2026-08-07 17:58Replace some Valhalla flags with JAVA_SPEC_VERSION >= 28
- Pull request#24501gacholio2026-08-07 17:42
- Pull request#24502gacholio2026-08-07 17:42
- Issue comment#24497gita-omr2026-08-07 17:40Improve platform support with explicit length checks for Vector API
- Issue comment#24500hangshao02026-08-07 17:19Fix AccessFlag test failures for Valhalla identity classes
- Issue comment#24500theresa-m2026-08-07 17:06Fix AccessFlag test failures for Valhalla identity classes
- Issue#24499pshipton2026-08-07 16:11DaaLoadTest Invalid JIT return address
- Issue#24499pshipton2026-08-07 16:11DaaLoadTest Invalid JIT return address
- Issue#24499pshipton2026-08-07 16:11DaaLoadTest Invalid JIT return address
- Issue comment#24498pshipton2026-08-07 16:05OpenJDK java/util/concurrent/tck/JSR166TestCase crash vmState=0x00020009
- Issue comment#24489mpirvu2026-08-07 16:05Add infrastructure to recompile method in the face of phase change
- Issue#24498pshipton2026-08-07 16:05OpenJDK java/util/concurrent/tck/JSR166TestCase crash vmState=0x00020009
- Pull request#24465konark20102026-08-07 16:02
- Issue#23292pshipton2026-07-31 15:44jdk_lang_0 java/lang/IO/IO.java AssertionFailedError: expected: <true> but was: <false>
- Issue comment#24386pshipton2026-07-20 13:28# JIT: escape analysis array scalar replacement changes `aastore` exception type from `ArrayStoreException` to `ClassCastException`
- Issue comment#24375vijaysun-omr2026-07-17 02:34Fix createTempsForCall's handling of not-collected references
- Issue#24365pshipton2026-07-14 21:40jit_hw Object not in heap range ASSERTION FAILED MarkingScheme.hpp:71
- Issue comment#242290xdaryl2026-07-07 17:54Add J9 equivalents for canTransformUnsafeSetMemory
- Pull request#24236mpirvu2026-07-02 21:57
- Issue comment#24219JasonFengJ92026-06-30 21:19jdk_restricted_security_0 openj9/internal/security/TestProperties.java RuntimeException: Constraints of provider not previously specified cannot be modified: com.sun.crypto.provider.SunJCE
- Issue comment#24227gita-omr2026-06-25 17:46VectorAPIExpansion: don't treat a non-auto aload as a vector temp
- Issue#22110JasonFengJ92026-06-24 19:41jdk_lang_0_FAILED java/lang/Thread/virtual/CustomScheduler.java testThreadUnparkOOME InterruptedException
- Issue comment#24080tajila2026-06-23 20:33Clean monitor enter records during VM shutdown
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 104 stars here means stars gained during the window, not the repo's star count.