Date: Tue, 16 Jul 2002 22:41:44 -0700 (PDT) From: Matt Dillon <dillon@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/i386 machdep.c Message-ID: <200207170541.g6H5fiiv080287@freefall.freebsd.org>
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dillon 2002/07/16 22:41:44 PDT
Modified files:
sys/i386/i386 machdep.c
Log:
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?).
Revision Changes Path
1.524 +10 -3 src/sys/i386/i386/machdep.c
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