[Bug libc/34394] Regression in cpu2006 403.gcc after removal of dynamic mmap/trim threshold

sam at gentoo dot org via Glibc-bugs <[email protected]> Tue, 21 Jul 2026 08:45:04 +0000

Newsgroups	gmane.comp.lib.glibc.bugs
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D34394

--- Comment #4 from Sam James <sam at gentoo dot org> ---

commit 249639137ed360d1827d9e663261ba26d2b01d81
Author:     Peter Bergner <[email protected]>
AuthorDate: Sat Jul 18 01:24:38 2026 +0800
Commit:     Peter Bergner <[email protected]>
CommitDate: Sat Jul 18 02:36:05 2026 +0800

    Revert "malloc: Remove dynamic mmap/trim threshold [BZ #30769]"

    This change causes large degradations on multiple SPEC benchmarks,
    so we have to revert this commit.

    GLIBC BZ: https://sourceware.org/PR34394

    This reverts commit 17a79a51208c5648fe70983085833bf15d83d0f1

    Signed-off-by: Peter Bergner <[email protected]>
    Reviewed-by: Adhemerval Zanella  <[email protected]>

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