> Hi all,
>
> We observed the test
> vmTestbase/nsk/jvmti/AttachOnDemand/attach020/TestDescription.java
> intermittent fails. since the target application intermittent OOM. The target
> application will try to exhaust the heap memory and then trigger garbage
> collection by `ClassUnloader.eatMemory()` in file
> test/hotspot/jtreg/vmTestbase/nsk/jvmti/AttachOnDemand/attach020/attach020Target.java.
>
> So I think it's better to limited the max heap usage of target application.
> Before this PR, the physical memory usage is about 30.7GB(this depends the
> total free memory on the test machine), and the jtreg main action take about
> 11 seconds to finish; After this PR, the physical memory usage is about
> 126MB, and the jtreg main action take about 0.7 senonds to finish. I use
> below command to get the usage of physical memory.
>
> Change has been verified locally, test-fix only, no risk.
>
>
> grep VmRSS /proc/`ps -ef | grep -w java | grep vmsqe.aod.AppId | awk '{print
> $2}'`/status
SendaoYan has updated the pull request incrementally with two additional
commits since the last revision:
- Revert change to
test/hotspot/jtreg/vmTestbase/gc/gctests/SoftReference/soft003/soft003.java
- Remove unnecessary -X128M
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/28011/files
- new: https://git.openjdk.org/jdk/pull/28011/files/f8e72ecf..499eb8ca
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=28011&range=05
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=28011&range=04-05
Stats: 10 lines in 10 files changed: 0 ins; 0 del; 10 mod
Patch: https://git.openjdk.org/jdk/pull/28011.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/28011/head:pull/28011
PR: https://git.openjdk.org/jdk/pull/28011
