Date: Sun, 13 May 2007 16:17:55 +0100 From: Thomas Sparrevohn <Thomas.Sparrevohn@btinternet.com> To: freebsd-current@freebsd.org Subject: Re: MacBook patches Message-ID: <200705131617.56090.Thomas.Sparrevohn@btinternet.com> In-Reply-To: <861whkn6wv.wl%rpaulo@fnop.net> References: <86k5vffjz8.wl%rpaulo@fnop.net> <200705131225.53936.Thomas.Sparrevohn@btinternet.com> <861whkn6wv.wl%rpaulo@fnop.net>
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On Sunday 13 May 2007 15:18:40 Rui Paulo wrote: > At Sun, 13 May 2007 12:25:53 +0100, > Thomas Sparrevohn wrote: >=20 > > Nice - Have you looked at using the mwait deeper C-States rather > > than halt?=20 >=20 > Nop. >=20 > > I think the "msr" portion looks like it will handle the entire Micro > > Core architecture that would be really nice - Judging from the > > papers published by intel and from the general discussions on the > > net - it seems like=20 >=20 > Are you refering to msrtemp driver? Yes, it only works on Intel's Core > Architecture, at the moment. >=20 > > Would it be possible to seperate the "ACPI" part from the other "Mac > > patches" as I think its of more general use? =20 >=20 > Well, if someone really needs it (besides for MacBooks), we can > discuss what should be done. Using a quad-core - Desktop - I need it - Normally the cores runs at 45C - under freebsd it more like 51-55C and its giving me heat burns on my feet ;= =2D) All the Core Micro architecture uses TM2 approach and ODCM as secondary. The Xeon's systems seems as a rule to have reasonable APCI implementations= =20 =2D however quite a lot of Desktop systems does not really and depends upon= OSPM to give the information - Judging from the Linux implementation that is the= approach they have taken - eg. cstate.c etc -=20 A quad core system are in idle wait quite a lot due to the way that portupg= rade etc. works but I don't think that the system enters "C1 Auto Halt Stop Grant" which in= it self would half the power used.=20 =46rom a linux presentation it looks like the Power Usage swings between 31= Watt - down to 1.8Watt in DC4 state so there a lot of heat and power to be saved ;-) So I think there are good reasons to look at TM2 and Mwait etc=20 >=20 > -- > Rui Paulo > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >=20
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