On Sat, May 24, 2014 at 9:48 PM,  <normalperson / yhbt.net> wrote:
> Issue #9113 has been updated by Eric Wong.
>
>
>  KOSAKI Motohiro <kosaki.motohiro / gmail.com> wrote:
>  > Do we have only one benchmark provided by Sam? I don't think it is
>  > enough much comparison to make decision.
>
>  Empirical evidence on my 32-bit yahns server after running several days
>  shows ~40M RSS w/ jemalloc 3.0/3.6 vs 60-80M RSS for eglibc malloc on
>  Debian stable.  I'll work on gathering more data for other systems.

So, I'd suggest two phase action.

1. Commit your patch, but disable by default.
2. Gather more use-case and performance data.
    Note: They should be reproducible. We need measure them again and
again when libs updated.
3. Change the default when the community is convinced the benefit.