On Thu, Oct 15, 2009 at 4:32 AM, Alan Coopersmith <Alan.Coopersmith at sun.com> wrote: > I've putback to the master Nevada X gate now the changes to make the > X gate builds run multiple commands in parallel. ? This is used by default > whenever you start a build via either the "buildit" script at the top-level > or the "open-src/util/build-tools/xmake" script to run a make at a lower > level of the build tree. ? (The parallel build logic is all in xmake, > buildit just calls xmake to do the builds.) > > The default number of jobs allowed to run in parallel will be the number of > virtual cpus reported as "on-line" by /usr/sbin/psrinfo. > > You can override this with the DMAKE_MAX_JOBS environment variable, or by > putting an entry for the machine name in $HOME/.make.machines (file name > & format borrowed from ON build system). ? Entries there look like: > x11x max=2 > x11s max=1 > > It also honors the MAKE environment variable - if this is set to "make", the > old normal make is used, if unset, or set to "dmake" then the parallel make > command is used. > > On the systems I tested on: > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Before ? ? After > Ultra 27 (4 cores x 2 threads => 8 jobs) ? ? ? ? 1:34 ? ? ? 0:18 > Sun Fire X4100 (2 CPUs => 2 jobs) ? ? ? ? ? ? ? ?2:12 ? ? ? 1:15 > Sun Fire V240 (2 CPUS => 2 jobs) ? ? ? ? ? ? ? ? 5:00 ? ? ? 2:03 >
Hi Alan, congrats! Looks like a significant improvement. Good job! %martin
