Re: speedup build time

On Sun, Oct 27, 2024 at 07:00:17PM -0500, Maku Bex wrote:
>Hello,
>
>I'm trying to figure out a way to decrease build time of -CURRENT and/or
>-STABLE but it is not working out that well.
>
>*	Tuning /etc/make.conf and /etc/src-env.conf based on their manpages
>(make.conf(5), make(1), src.conf(5)).
>*	Removed certain options from GENERIC, which reduced the kernel build
>time significantly.

If you're following -current and want a quick build/everything
you need to build GENERIC-NODEBUG not GENERIC

I don't have WITH_CCACHE_BUILD=yes in src-env but I do have it in /etc/src.conf

cat /etc/src.conf

KERNCONF=GENERIC-NODEBUG
WITH_CCACHE_BUILD=
CCACHE_PREFIX=/usr/local/bin
CCACHE_DIR=/var/cache/ccache
#
WITH_MALLOC_PRODUCTION=

I build the kernel with 'make -j16 kernel' and reboot into the new kernel
Then:

make -j16 buildworld 
make -j16 kernel
etcupdate -p
make -j16 installworld
etcupdate -B
make check-old
yes | make delete-old
yes | make delete-old-libs
sync
reboot

subsequent builds are very quick. This particular example is from a VM
on a bhyve (XEON) host. For the purposes of rebuilding, before doing the
updating, I temporarily launch the vm with 16 vCPUs and 64GB vRAM.

It'd be faster on baremetal.
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