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(parent: 6bbba4d) | patch
Qualify comment on machdep.cpu_idle_hlt. Turning this on on a SMP
authordillon <dillon@FreeBSD.org>
Wed, 17 Jul 2002 05:41:43 +0000 (05:41 +0000)
committerdillon <dillon@FreeBSD.org>
Wed, 17 Jul 2002 05:41:43 +0000 (05:41 +0000)
commit22d1581cc272b03c5908a43b399807ad9dbc7780
tree0bfc4bbf4d0c334f55b47079b398b4fe78a23f8dtree | snapshot
parent6bbba4d27b167566ae488760854e950603cba4e7commit | diff
Qualify comment on machdep.cpu_idle_hlt.  Turning this on on a SMP
machine will result in approximately a 4.2% loss of performance (buildworld)
and approximately a 5% reduction in power consumption (when idle).  Add XXX
note on how to really make hlt work (send an IPI to wakeup HLTed cpus on
a thread-schedule event?  Generate an interrupt somehow?).
sys/amd64/amd64/machdep.c diff | blob | history
sys/i386/i386/machdep.c diff | blob | history
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