Hi folks, At present, Mesos defaults to compiling with "-O0"; to enable compiler optimizations, the user needs to specify "--enable-optimize".
I'd like to propose we change the default, for a few 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. Neil
