Re: [gentoo-user] Emerge load again

[John Blinka <john.blinka@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1223 bytes --]

On Mon, Nov 27, 2023 at 10:39 AM Peter Humphreey <peter@prh.myzen.co.uk>
wrote:l

>
> What am I missing?


I have much less powerful hardware than you but libreoffice (as a
stand-alone build) generates many more threads than 4 on my “cluster”.  I’m
also using distcc.

On the main box, I set
MAKEOPTS=“-j17 -l6”
On the other two less powerful ones -l is 5 and 3, but -j is the same.

On the main box, /etc/distcc/hosts contains
localhost/11 sophie/5,lzo tobey/3,lzo —localslots=11 —localslots_cpp=11

On sophie and tobey (my less powerful boxes) the hosts file contains
something similar but specific to those boxes. The localslots and
localslots_cpp numbers are 3 on tobey and 5 on sophie, and the order in
which the machines are mentioned changes (local machine first, then remote
machines in order of power).

This configuration is the result of a lot of experimentation rather than
just a theoretical calculation. The various guides that discuss how to tune
these numbers for best performance were modestly helpful in explaining what
the tuning parameters mean, but experimenting and watching the resulting
performance was the best teacher.

Hope this helps.

John Blinka

[-- Attachment #2: Type: text/html, Size: 1941 bytes --]