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JEMALLOC 4.0 released - any chance of a benchmark against 3.6 ?

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  • JEMALLOC 4.0 released - any chance of a benchmark against 3.6 ?

    Jemalloc 4.0 quietly shipped a week or so ago:

    https://github.com/jemalloc/jemalloc/releases/tag/4.0.0

    EPEL only carries 3.6 (for awhile now)

    But I found a reliable source of rpms here for many flavors of redhat:

    http://users.linpro.no/ingvar/jemalloc/4.0.0/

    Seems to work fine on CentOS 6 & 7.

    But I am curious if it is actually faster.

    Since mysql can drop in jemalloc via my.cnf

    malloc-lib=/usr/lib64/libjemalloc.so

    and you can always just do

    echo "/usr/lib64/libjemalloc.so" >> /etc/ld.so.preload

    (restart services and watch lsof -n | grep jemalloc to see them all use jemalloc)

    maybe some benchmarks can be done to compare glibc vs jem 3.6 jem 4.0 ?




    Last edited by _ck_; 08-30-2015, 04:38 PM.

  • #2
    +1
    Also, I'm curious about comparison between jemalloc and legacy malloc.

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