Integrated: 8315442: Enable parallelism in vmTestbase/nsk/monitoring/stress/thread tests

[Aleksey Shipilev]

On Thu, 31 Aug 2023 08:40:58 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Current vmTestbase/nsk/monitoring/stress/thread tests contains 21 tests, each running exclusively. This drags the tier4 test times up. There seem to be no reason to run these tests exclusively, though: they complete in reasonable time, are lightly-threaded, and consume the usual amount of memory.
> 
> We should consider enabling parallelism for them and get improved test performance. Currently it is blocked by TEST.properties with exclusiveAccess.dirs directives in them.
> 
> Current run on 18-core machine:
>  1025.63s user 97.23s system 586% cpu 3:11.60 total
> 
> Fully parallel:
>  1125.04s user 107.60s system 1583% cpu 1:17.83 total 
> 
> Additional testing:
>  - [x]  50x iterations of Linux x86_64 fastdebug `vmTestbase/nsk/monitoring/stress/thread`

This pull request has now been integrated.

Changeset: 9013b032
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/9013b032448518e09a7c6f2e80054be722c970a3
Stats:     483 lines in 21 files changed: 0 ins; 483 del; 0 mod

8315442: Enable parallelism in vmTestbase/nsk/monitoring/stress/thread tests

Reviewed-by: stuefe, lmesnik

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PR: https://git.openjdk.org/jdk/pull/15508