>-----Original Message----- >From: tesla-dev-bounces at opensolaris.org [mailto:tesla-dev- >bounces at opensolaris.org] On Behalf Of Mark Haywood >Sent: Tuesday, July 24, 2007 1:51 AM >To: Cyril Plisko >Cc: tesla-dev at opensolaris.org >Subject: Re: [tesla-dev] Power Consumption test > >Cyril Plisko wrote: >> On 7/23/07, Mark Haywood <Mark.Haywood at sun.com> wrote: >> >>> Aubrey Li wrote: >>> >>>> On 7/23/07, Cyril Plisko <cyril.plisko at mountall.com> wrote: >>>> >>>>> On 7/23/07, Aubrey Li <aubreylee at gmail.com> wrote: >>>>> >>>>>> Hi list, >>>>>> >>>>>> >>>> I checked just now, between Build67 and hg tip revision 4700. There >>>> are no big difference. >>>> >>> Forgive my ignorance. What is the hg tip revision 4700? >>> >> >> ON consolidation at revision 4700, I guess. 4700 seems to be >> the latest revision as of Jul 22. Build 67 was revision 4444. >> >Thanks. I better get used to Mercurial. I downloaded the latest source >and verified that revision 4700 does include the SpeedStep support. It's >not enabled by default in Solaris. You have to enable it by editing >power.conf(4) and adding the following entries: > >cpupm enable >cpu-threshold 15s > >And then in order to inform the kernel of the new policy, you must run >pmconfig(1M). >Alternatively, you could use the /usr/dt/bin/dtpower GUI.
OK, I'll enable it and rerun the test. The question is, if the feature improves the power management, why not enable it by default? > >As far as the comparison against Linux though, it makes no sense to >enable CPU power management on Solaris if it wasn't enabled on Linux. > Sure, we should be based on the same situation. -Aubrey
