[jira] [Updated] (MESOS-4709) Enable compiler optimization by default

["Till Toenshoff (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MESOS-4709?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Toenshoff updated MESOS-4709:
----------------------------------
    Shepherd: Till Toenshoff

> Enable compiler optimization by default
> ---------------------------------------
>
>                 Key: MESOS-4709
>                 URL: https://issues.apache.org/jira/browse/MESOS-4709
>             Project: Mesos
>          Issue Type: Improvement
>          Components: general
>            Reporter: Neil Conway
>            Assignee: Neil Conway
>              Labels: autoconf, configure, mesosphere
>
> At present, Mesos defaults to compiling with "-O0"; to enable compiler
> optimizations, the user needs to specify "--enable-optimize" when running {{configure}}.
> We should change the default for the following reasons:
> (1) The autoconf default for CFLAGS/CXXFLAGS is "-O2 -g". Anecdotally,
> I think most software packages compile with a reasonable level of
> optimizations enabled by default.
> (2) I think we should make the default configure flags appropriate for
> end-users (rather than Mesos developers): developers will be familiar
> enough with Mesos to tune the configure flags according to their own
> preferences.
> (3) The performance consequences of not enabling compiler
> optimizations can be pretty severe: 5x in a benchmark I just ran, and
> we've seen between 2x and 30x (!) performance differences for some
> real-world workloads.



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