RFR: 8209595: MonitorVmStartTerminate.java timed out [v2]

[Chris Plummer]

On Fri, 20 Oct 2023 13:28:19 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

>> From studying test failures, it looks like the way the test identifies its related processes is failing.
>> It checks the mainArgs of a process by attaching, and looks like it occasionally misses getting a valid match.  The hasMainArgs method ignores exceptions as it is expecting some exceptions: it is going to test unrelated java process which happen to start.
>> 
>> It should retry this main args check on failure, but not too many times to be a burden on other valid unrelated processes, and should also log the PIDs that have an issue so we can see if this is part of any future failure.
>> 
>> Other small logging changes so we can see more easily the progress through the test.
>
> Kevin Walls has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains six additional commits since the last revision:
> 
>  - Check main args fetching was ok.  Increase sleep.
>  - nits
>  - Merge remote-tracking branch 'upstream/master' into MonitorVmStartTerminate
>  - nit1
>  - Comment, and move takeNap() sleep method.
>  - 8209595: MonitorVmStartTerminate.java timed out

Marked as reviewed by cjplummer (Reviewer).

test/jdk/sun/jvmstat/monitor/MonitoredVm/MonitorVmStartTerminate.java line 187:

> 185:                     VmIdentifier vmid = new VmIdentifier("//" + id.intValue());
> 186:                     MonitoredVm target = host.getMonitoredVm(vmid);
> 187:                         String monitoredArgs = MonitoredVmUtil.mainArgs(target);

Fix indent.

test/jdk/sun/jvmstat/monitor/MonitoredVm/MonitorVmStartTerminate.java line 195:

> 193:                     }
> 194:                 } catch (URISyntaxException | MonitorException e) {
> 195:                     // Pocess probably not running or not ours, e.g.

Pocess -> Process

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PR Review: https://git.openjdk.org/jdk/pull/16077#pullrequestreview-1688373622
PR Review Comment: https://git.openjdk.org/jdk/pull/16077#discussion_r1356975369
PR Review Comment: https://git.openjdk.org/jdk/pull/16077#discussion_r1356975911