On Wed, 29 Apr 2026 08:52:59 GMT, Casper Norrbin <[email protected]> wrote:

> Hi everyone,
> 
> `TestLimitsUpdating.java` tests updating container limits live during a JVMs 
> runtime. One of these updates is to the number of CPUs available, from 2 to 
> 3. However, if there are only 2 CPUs visible to the JVM (total available, or 
> restricted by other means), this update is ignored, and we are bounded to 2 
> CPUs. The tests expects the new limit to be 3, and thus fails.
> 
> I propose we lower the number from 2/3 -> 1/2 to allow more configurations to 
> run this tests. If we only have 1 CPU available, we should instead skip the 
> test as we can't update the number of CPUs in a meaningful way.
> 
> Testing:
> - Local testing with both low and high number of CPUs available
> - Oracle tiers 1-5
> 
> ---------
> - [x] I confirm that I make this contribution in accordance with the [OpenJDK 
> Interim AI Policy](https://openjdk.org/legal/ai).

The test changes seem reasonable, thank you.

test/hotspot/jtreg/containers/docker/TestLimitsUpdating.java line 3:

> 1: /*
> 2:  * Copyright (c) 2023, Red Hat, Inc.
> 3:  * Copyright (c) 2024, 2025, Oracle and/or its affiliates. All rights 
> reserved.

Please update the copyright.

test/jdk/jdk/internal/platform/docker/TestLimitsUpdating.java line 3:

> 1: /*
> 2:  * Copyright (c) 2023, Red Hat, Inc.
> 3:  * Copyright (c) 2024, 2025, Oracle and/or its affiliates. All rights 
> reserved.

Please update the copyright.

-------------

Changes requested by phubner (Committer).

PR Review: https://git.openjdk.org/jdk/pull/30985#pullrequestreview-4195479755
PR Review Comment: https://git.openjdk.org/jdk/pull/30985#discussion_r3159756440
PR Review Comment: https://git.openjdk.org/jdk/pull/30985#discussion_r3159757807

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