Messages in this thread | | | From | "Michael S. Zick" <> | Subject | Re: Linux 2.6.30-rc8 [also: VIA Support] | Date | Fri, 5 Jun 2009 02:41:09 -0500 |
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On Fri June 5 2009, Harald Welte wrote: > On Thu, Jun 04, 2009 at 12:27:07PM -0500, Michael S. Zick wrote: > > On Thu June 4 2009, Linus Torvalds wrote: > > > > > > Side note: is it more stable if you disable the VIA speedstep thing > > > (whatever it's called (ok, google tells me it's called "TwinTurbo" and > > > "Advanced PowerSaver")? > > > > > > > The e_powersave code. > > that is only for the early C7, as I've been told by Centaur. C7-M should > definitely support the ACPI states. So better to disable both. > > > It was a fixed-speed kernel build that first hit the 4 hour up-time mark. > > I just reposted that build today (the -09143lk). > > did you actually check if the power transitions are on longer happening? >
No - without a /sys...cpufreq directory I don't know how to do that. But the machine is performing exactly as if it was at a fixed speed of 600Mhz.
Much different than when e_powersaver is included - -
Also, the e_powersaver stats look reasonable when compared with test loads running, so although this may be an acpi controlled system, e_powersaver "thinks" it has control (and does make a difference in performance). It is not that hard to tell subjectively the difference between 0.4Ghz and 1.2Ghz.
Mike > > For want of a documented JTAG port... > > there is JTAG on the CPU, but only for EXTEST/INTEST, i.e. access to the actual > signal lanes for making sure all the BGA pads are soldered and actually connect > to the right signals of the next component on the board. There is no embedded > ICE or anything of that sort. Also, your board most likely doesn't have JTAG > on an accessible connector, since it's out of mass production. >
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