Sat, 6 Jun 2026 14:37:40 +1000, /Olivier Lamy/:
On Sat, 6 Jun 2026 at 03:52, Stanimir Stamenkov via users <[email protected]> wrote:

Comparing 3.5.6 and 3.6.0-M1, I'm noticing a very apparent slow down with (JUnit 4) tests that produce larger output (500K-1MB, maven.test.redirectTestOutputToFile=true).

Does the slowdown happen with maven.test.redirectTestOutputToFile=false?
Can you create some issue with such report? Anything to reproduce would be great.

redirectTestOutputToFile=false appears to add a fixed overhead with both versions:

maven-surefire-plugin | redirectTestOutputToFile | time
----------------------|--------------------------|------:
3.5.6                 | true                     |    17s
3.5.6                 | false                    |    37s
3.6.0-M1              | true                     |    57s
3.6.0-M1              | false                    | 1m 17s

So doesn't appear a factor.  I've opened:

-   https://github.com/apache/maven-surefire/issues/3373

with the example I'm trying with.

--
Stanimir

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