Re: MP problems?

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Sat, 18 Sep 2021 09:59:54 +0200 (CEST)
Havard Eidnes <he%NetBSD.org@localhost> wrote:

> I have a G4 "Mirror drive doors" dual 1.25GHz mac whic now runs a
> recent NetBSD kernel (9.99.88 from September 15, fetched from
> nyftp.netbsd.org).
> 
> Lately I've checked whether wip/rust can be built natively on the
> box.  The answer appears to be "yes and no".
> 
> If I build with MAKE_JOBS set to 2, the build quickly comes to a
> halt, typically with a SEGV in the rustc process, and this
> typically happens quite early in the build process.  The rustc
> process is typically excercising multi-threading if allowed to.
> 
> If I remove the MAKE_JOBS setting, defaulting it to 1, the rust
> build completes without issue.  However, this build then nearly
> takes as much time as when I do the build on one of my G4 Mac
> Minis, so there is no actual benefit.

Is it starting to swap? I ran into issues like that with too many
cc1plus instances ( as in, building clang with less than 1GB per
compiler instance ), and rustc is an infamous memory pig.

have fun
Michael