Module Name: src
Committed By: ad
Date: Tue May 5 22:12:07 UTC 2020
Modified Files:
src/sys/kern: sys_lwp.c
Log Message:
lwp_unpark(): no need to acquire LWP refs or drop the proc lock.
On the hacky benchmarks I have, held over from the transition to 1:1
threading, this restores pthread_cond_signal() perf to radixtree/sleepq
levels, and semes much better than either with pthread_cond_broadcast() and
10 threads. It would be interesting to see what might be achieved with a
lockless lookup, which is within grasp now thanks to pid_table being used
for lookup.
To generate a diff of this commit:
cvs rdiff -u -r1.79 -r1.80 src/sys/kern/sys_lwp.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
