CVS commit: src/sys

["matthew green" <mrg%netbsd.org@localhost>]

Module Name:    src
Committed By:   mrg
Date:           Sat May  7 19:44:40 UTC 2022

Modified Files:
        src/sys/kern: kern_lwp.c kern_proc.c
        src/sys/sys: lwp.h

Log Message:
bump maxthreads default.

bump the default MAXLWP to 4096 from 2048, and adjust the default
limits seen to be 2048 cur / 4096 max.  remove the linkage to
maxuprc entirely.

remove cpu_maxlwp() that isn't implemented anywhere.  instead,
grow the maxlwp for larger memory systems, picking 1 lwp per 1MiB
of ram, limited to 65535 like the system limit.

remove some magic numbers.

i've been having weird firefox issues for a few months now and
it turns out i was having pthread_create() failures and since
bumping the defaults i've had none of the recent issues.


To generate a diff of this commit:
cvs rdiff -u -r1.248 -r1.249 src/sys/kern/kern_lwp.c
cvs rdiff -u -r1.266 -r1.267 src/sys/kern/kern_proc.c
cvs rdiff -u -r1.215 -r1.216 src/sys/sys/lwp.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.