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explain about non-integral squiggles

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espie 2013-10-03 16:33:08 +00:00
parent 4e50abc4ae
commit bf60a2c001
1 changed files with 8 additions and 1 deletions
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9
infrastructure/man/man1/dpb.1
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@ -1,4 +1,4 @@
.\" $OpenBSD: dpb.1,v 1.89 2013/10/03 16:12:05 espie Exp $
.\" $OpenBSD: dpb.1,v 1.90 2013/10/03 16:33:08 espie Exp $
.\"
.\" Copyright (c) 2010 Marc Espie <espie@openbsd.org>
.\"
@ -729,6 +729,13 @@ big machines devote some of their cores to
jobs that walk the queue in reverse, thus building smallest ports first.
As a result, small ports are built as a trickle alongside the largest ports,
thus offsetting the negative effect of the exponential queue for a large part.
.Pp
Note that
.Sq squiggles
can be a non-integral value, usually lower than 1, in which case they
represent the fraction of cores that should be affected to squiggles,
as decided randomly at the start of each build.
0.7 or 0.8 might be a good choice for dual core machines.
.Sh LOCKS AND ERRORS
.Nm
still uses the normal ports tree mechanism while building, which includes