Integrated: 8374875: Improve perfMemory warning about 'Insufficient space for shared memory file'

[Matthias Baesken]

On Fri, 9 Jan 2026 12:29:14 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> We have a perfMemory warning about 'Insufficient space for shared memory file'; this currently prints misleading info about 'java.io.tmpdir' and misses to print the directory, so we get no clue where exactly insufficient space is.
> 
> 
> Current Example output :
> OpenJDK 64-Bit Server VM warning: Insufficient space for shared memory file:
>    31671
> Try using the -Djava.io.tmpdir= option to select an alternate temp location.
> 
> 
> Just printing '31671' does not really help me much.
> And the suggestion to set  `java.io.tmpdir ` seems to be wrong; it WAS set in the java - execution the output is from, but is not used in the perfMemory coding  (probably intentionally).

This pull request has now been integrated.

Changeset: 7cf7f01f
Author:    Matthias Baesken <mbaesken at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/7cf7f01fb339bf3c5b81d946be8afa71ec267e42
Stats:     3 lines in 1 file changed: 0 ins; 0 del; 3 mod

8374875: Improve perfMemory warning about 'Insufficient space for shared memory file'

Reviewed-by: lucy, mdoerr, clanger

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PR: https://git.openjdk.org/jdk/pull/29138