Re: Enhanced SpeedStep driver available
Toxa <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.mobile,gmane.os.freebsd.current |
|---|---|
| Message-ID | <[email protected]> |
On Mon, Aug 16, 2004 at 08:06:30AM -0700, Colin Percival wrote:
> Thanks to everyone who has been sending me data about their
> processors (and in particular, the 90nm versions), I now have
> a first draft of a Enhanced SpeedStep driver available. For
> people with the appropriate processors (Pentium M only), this
> makes it possible to adjust the cpu frequency via a new sysctl
> (hw.est_curfreq), and have the cpu voltage adjusted at the
> same time.
> I've also put together a very simple control daemon which
> reads kern.cp_time every second and adjusts the cpu frequency
> based on the fraction of cpu time which is idle. This increases
> my laptop's battery life by around 40%.
> All the code is online at
> http://www.daemonology.net/freebsd-est/
> Assuming I don't hear any major bug reports in the next few
> days, I'll package these into ports and hopefully get them into
> the ports tree in time for 5.3-RELEASE.
I'm curious about processor's name. My laptop (sony vaio pcg-v505bx) has a Pentium 4 M, but not Centrino (which name is... Pentium 4 M too), afaik it's capable to support speedsted, (enhanced or not?). When loading your module:
[(3:40)(85.32%)(p1):~/tmp/est ] sudo kldload ./est.ko
[(3:40)(85.32%)(p1):~/tmp/est ] kldstat|grep est
27 1 0xc23cd000 2000 est.ko
[(3:40)(85.32%)(p1):~/tmp/est ] sysctl hw.est_curfreq
[(3:40)(85.32%)(p1):~/tmp/est ] sysctl hw.est_freqs
hw.est_freqs:
e.g. nothing
Is this for Centrino processors only?
p.s.: from dmesg:
CPU: Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz (1193.11-MHz
686-class CPU)
Origin = "GenuineIntel" Id = 0xf27 Stepping = 7
Features=0xbfebf9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
--
Anton A. Karpov
PGP key: http://www.toxahost.org/pgp/pubkey.asc
You can finger me @toxahost.org for my current status
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