On Sun, 15 Feb 2026 13:17:06 GMT, SendaoYan <[email protected]> wrote:
> Hi all, > > Test java/lang/management/MemoryMXBean/LowMemoryTest2.java#id1 intermittent > fails "java.lang.OutOfMemoryError: Metaspace". The test log shows that > MemoryPoolMXBean.isUsageThresholdExceeded() always return true but > MemoryPoolMXBean.getUsageThresholdCount() always return zero. The comment in > this test says that "UsageThresholdCount is only updated during GC.", so it > seems that the System.gc() do not trigger GC actually, so test always > allocate new classes and then throw OOME in metaspace. > > This PR use `WhiteBox.getWhiteBox().fullGC()` instead of `System.gc()` to > make sure the GC to be trigger all the time. Change has been verified locally > on linux-aarch64 and linux-x64. This pull request has now been integrated. Changeset: 0ed34913 Author: SendaoYan <[email protected]> URL: https://git.openjdk.org/jdk/commit/0ed34913bac44f3f0895cd9ab15d4e7ff2d5f5c2 Stats: 16 lines in 1 file changed: 2 ins; 4 del; 10 mod 8377944: LowMemoryTest2.java#id1 intermittent fails OOME: Metaspace Reviewed-by: dholmes, cjplummer ------------- PR: https://git.openjdk.org/jdk/pull/29729
