Package: debhelper
Version: 7.9.3
Severity: wishlist
It'd be useful to have dh_builddeb have support for building debs in
parallel. As a case, the ghc6 6.12.3 package I'm working on now has
debs sized 4M, 8M, 16M, 32M and 43M. After building it all I'm fairly
sure to have it all in memory and the CPU is the bottleneck, running
gzip on all that data. I'd love to pass some of that to the second
core.
I did some tests on this, making a rather trivial change to
dh_builddeb's foreach loop, like this:
my $processes = 0;
foreach ... {
my $pid = fork();
if ($pid == 0) {
...
exit 0;
} else {
if (++$processes > 1) {
wait;
--$processes;
}
}
}
while (wait != -1) {}
Here's time dh_builddeb with the current version:
real 4m0.960s
user 3m56.903s
sys 0m2.636s
And here's what I got with this (some noise in there but you get the
idea):
real 2m21.527s
user 3m54.475s
sys 0m2.536s
--
To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
