Re: devel/llvm13 failed to reclaim memory on 8 GB Pi4 running -current [UFS context: used the whole swap space too]

From: bob prohaska <fbsd_at_www.zefox.net>
Date: Fri, 28 Jan 2022 16:15:45 UTC 
On Thu, Jan 27, 2022 at 11:40:46PM -0800, Mark Millard wrote:
[massive edit for readability]

> >>> What are you using for each of:
> >>> vm.pageout_oom_seq ?
> >>> vm.pfault_oom_attempts ?
> >>> vm.pfault_oom_wait ?

For the case of devel/llvm13 (Pi4, -current, make) defaults.
Those seem to be:
vm.pageout_oom_seq: 12
vm.pfault_oom_attempts: 3
vm.pfault_oom_wait: 10
With 8 GB RAM I didn't anticipate memory problems 8-(

For the case of practical interest (Pi3, stable/13, buildworld):
vm.pageout_oom_seq: 4096
vm.pfault_oom_attempts: 20
vm.pfault_oom_wait: 10

It appears I should increase the latter two for starters.

Can the Fortran feature be turned off in buildworld?
That's the troublemaker for me.

Thanks for writing!

bob prohaska