Re: dns/bind916 builds rust unexpectedly

From: Robert Clausecker <>
Date: Mon, 25 Sep 2023 21:41:07 UTC
Am Mon, Sep 25, 2023 at 02:15:19PM -0700 schrieb Edward Sanford Sutton, III:
>   Poudriere still causes crashes in my experience depending on hardware,
> poudriere configuration, and what you tell it to build; I have to change
> defaults to use it and then it is fine. With only 32GB of RAM, if I have it
> operate the whole build process in RAM
> (USE_TMPFS=all>/usr/local/etc/poudriere) then I have to limit myself to 2
> build jobs (PARALLEL_JOBS=2, though I specify it on the poudriere command
> line) or I 'may' have issues. Within that I can have multiple jobs per build
> (ALLOW_MAKE_JOBS=yes>/usr/local/etc/poudriere,
> MAKE_JOBS_NUMBER=4>/usr/local/etc/poudriere.d/make.conf) which gets through
> each compile job much faster so no one job is as likely to be running
> 'alone' holding up other jobs while cores sit idle.

Ports tend to eat more and more storage for their source and dependencies these
days.  I encountered the same issue you had.  A simple fix is to switch to
USE_TMPFS="data localbase" which keeps the source code and objects of the package
to be built on disk while placing dependencies into RAM.  This does not actually
reduce performance by much as the biggest spike in disk usage is when dependencies
are installed and the distfile is extracted.  This setting helps with the former
while not doing much to the latter.  During the build, compilers infrequently
write small objects to disk, which gets handled very well by the write cache, so
having the WRKDIR on disk doesn't hurt.  The cache also quickly picks up on
frequently needed source files, so there's little penalty in having to read them
from disk every once in a while.

After I configured Poudriere like this, I never had any whole-system crashes

As for the number of jubs, I recommend overcommitting by a factor of 1.5.  So
for n CPUs, 1.5n jobs should run in total.  E.g. on an 8 CPU machine I use
PARALLEL_JOBS=6 with MAKE_JOBS_NUMBER=2.  This works well for when there are
many small packages, but can be a bit annoying if you are only waiting for one
big dependency (like LLVM) to build.  Enabling ccache can help here.

I hope this helps you improve your setup.

Robert Clausecker

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