Integrated: 8315437: Enable parallelism in vmTestbase/nsk/monitoring/stress/classload tests

[Aleksey Shipilev]

On Thu, 31 Aug 2023 07:55:01 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Current vmTestbase/nsk/monitoring/stress/classload tests contains 24 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:
> 2011.95s user 201.83s system 356% cpu 10:20.19 total
> 
> Fully parallel:
> 2274.02s user 128.64s system 2029% cpu 1:58.39 total 
> 
> Additional testing:
>  - [x] 50x iterations of Linux x86_64 fastdebug `vmTestbase/nsk/monitoring/stress/classload`

This pull request has now been integrated.

Changeset: dd214d0f
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/dd214d0f9543f125ef514eb3a60a65a5f514b1ca
Stats:     552 lines in 24 files changed: 0 ins; 552 del; 0 mod

8315437: Enable parallelism in vmTestbase/nsk/monitoring/stress/classload tests

Reviewed-by: lmesnik, cjplummer

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PR: https://git.openjdk.org/jdk/pull/15506