Date: Sun, 9 Feb 2014 16:36:18 -0500 From: Glen Barber <gjb@FreeBSD.org> To: freebsd-toolchain@FreeBSD.org Subject: bmake(1) "sometimes" honors '-j' ? Message-ID: <20140209213618.GA63417@glenbarber.us>
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Maybe there is an obvious answer to this, or maybe I just do not
understand how computers work.
For snapshot builds for RPI-B and BEAGLEBONE, I am hard-coding '-j10'
for buildworld and '-j6' for buildkernel, because these values are
somewhat "safe" considering various race conditions with high '-j'
values. Crochet sets the '-j' value to '1', if WORLDJOBS and
KERNJOBS are not set, so what I end up with is basically:
'make [...] -j10 -j1 ${.TARGET}'.
What I see in ps(1) is a bit confusing to me, though.
For example, the following suggests '-j10' is being honored for the
'libraries' target, but '-j1' is being forced for the 'buildworld'
target, and I'm not sure I understand why. (Lines broken up for
readability.)
root@grind:~ # ps auxww | grep make | grep 'j'
root 67766 0.0 0.0 9024 1048 4 S+ 7:20PM 0:03.02 make
TARGET_ARCH=armv6 SRCCONF=/dev/null __MAKE_CONF=/dev/null -j10 -j 1 buildworld
root 13112 0.0 0.0 9024 1488 4 S 8:24PM 0:00.94 make
-j10 -f Makefile.inc1 DESTDIR=/usr/obj/arm.armv6/usr/src/tmp -DNO_FSCHG
-DWITHOUT_HTML -DWITHOUT_INFO -DNO_LINT -DWITHOUT_MAN -DNO_PROFILE
-DNO_TESTS libraries
So, if I am reading this correctly, the 'libraries' target is honoring
the '-j10', and 'buildworld' is honoring the later-specified '-j1'.
Am I reading this incorrectly, or is this something I just do not
understand about our toolchain?
Thanks.
Glen
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