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set GLIBC_TUNABLES to increase mem reservation #449

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Merged
merged 1 commit into from
Jun 16, 2025
Merged

set GLIBC_TUNABLES to increase mem reservation #449

merged 1 commit into from
Jun 16, 2025

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vlinkz
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@vlinkz vlinkz commented Jun 16, 2025 •
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Why

Seeing number of issues related to https://sourceware.org/bugzilla/show_bug.cgi?id=31991, jemalloc/jemalloc#2472, and flox/flox#1341.

In our case this leads to some programs failing with

libjemalloc.so.2: cannot allocate memory in static TLS block

What changed

When LD_AUDIT is set, set GLIBC_TUNABLES to a higher amount to allow these programs to not crash.

Test plan

  • Ensure redis-server, bun, fd, and others work as expected.

Rollout

  • This is fully backward and forward compatible

@vlinkz vlinkz requested a review from a team as a code owner June 16, 2025 16:15
@vlinkz vlinkz requested review from airportyh and removed request for a team June 16, 2025 16:15
@vlinkz vlinkz merged commit 0ba5cb4 into main Jun 16, 2025
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@vlinkz vlinkz deleted the vlinkz/glibctunablefix branch June 16, 2025 16:29
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@lhchavez lhchavez lhchavez approved these changes

@airportyh airportyh Awaiting requested review from airportyh airportyh is a code owner automatically assigned from replit/nixmodules-reviewers

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@vlinkz @lhchavez