t/18.t often fails with "Less fd's in child than caches:" or "Less fd's in child than caches:" #27

soig · 2022-03-29T14:19:56Z

Alternatively it can fails with "Less fd's in child than caches:"
See eg: https://pkgsubmit.mageia.org/uploads/failure/cauldron/core/release/20220329135017.tv.duvel.4059698/log/perl-Cache-FastMmap-1.570.0-2.mga9/build.x86_64.0.20220329135335.log

Failed test 'Less fd's in child than caches: 29 < 20'

build.x86_64.0.20220329135335.log

Fix issue robmueller#27 regarding incorrect fd count.

filipecustodio · 2025-01-11T09:45:51Z

I was able to reproduce this problem consistently using docker alpine images and two different architectures (linux/amd64 and linux/arm). The problem is that test 18 does not take into account the number of file descriptors opened by the perl interpreter, which may vary depending on the architecture.
For instance: in linux/amd64, the following command: perl -e 'print scalar(() = glob qq{/proc/$$/fd/*});' results in 8, and in linux/arm the result is 4.
I proposed a fixed version of t/18.t to fix this issue.

filipecustodio added a commit to filipecustodio/cache-fastmmap that referenced this issue Jan 11, 2025

Update 18.t

b2c819b

Fix issue robmueller#27 regarding incorrect fd count.

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t/18.t often fails with "Less fd's in child than caches:" or "Less fd's in child than caches:" #27

t/18.t often fails with "Less fd's in child than caches:" or "Less fd's in child than caches:" #27

soig commented Mar 29, 2022

filipecustodio commented Jan 11, 2025

t/18.t often fails with "Less fd's in child than caches:" or "Less fd's in child than caches:" #27

t/18.t often fails with "Less fd's in child than caches:" or "Less fd's in child than caches:" #27

Comments

soig commented Mar 29, 2022

Failed test 'Less fd's in child than caches: 29 < 20'

filipecustodio commented Jan 11, 2025