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Re: Stability Under Load


On Sat, Aug 20, 2011 at 10:12:58AM +0100, Gordan Bobic wrote:
> On 08/20/2011 09:28 AM, Marc Dietrich wrote:
> >Am Freitag 19 August 2011, 20:51:29 schrieb Gordan Bobic:
> >>>>   Just looking now. Are you referring to the REGULATOR_INIT macro and
> >>>>   specifically the line that defines a struct with:
> >>>>
> >>>>   REGULATOR_INIT(sm1, 725, 1200, true)?
> >>>>
> >>>>   Are you saying that the default value as provided by Toshiba was
> >>>>
> >>>>   REGULATOR_INIT(sm1, 725, 1000, true)?
> >>>
> >>>correct. Please understand that these values are just best guesses on
> >>>what the Toshiba code does. In fact, kernel 2.6.38 has nothing to do
> >>>with the original code base because it's a total rewrite. You may check
> >>>arch/arm/mach-
> >>>tegra/odm_kit/adaptations/pmu/tps6586x/nvodm_pmu_tps6586x.c for
> >>>reference.
> >>
> >>I don't seem to have the arch/arm/mach-tegra/odm_kit directory in the
> >>kernel tree I pulled from your git. Where can I get this?
> >
> >from the original source (check .29 or .32 kernel on gitorious.org).
> >
> >Btw, I checked again and it seems that I only changed SM1. So it would be great
> >if you can do some stress test with both voltages. I'm also not sure what
> >voltages are really used in the original kernel. The code is sometimes a bit
> >confusing. But you can check by running .29 and look in /sys/devices/regulator
> >(I guess).
> OK, I'll take a look at that. My new AC100 passed 9 hours of pbzip2
> testing without any errors, so the evidence so far is that putting
> SM1 back to 1000mV did stabilize it. Testing with the old one (the
> one that was very unstable) now - will report back tonight.
I just tried to build a kernel with one restricted to 1000, but quickly
got a build failure. It might be caused by having tried to build a
kernel using a 1200 previously and the device still being a bit messed
up from that, though.

I should give it some rest and try again in a few hours.

Julian Andres Klode  - Debian Developer, Ubuntu Member

See http://wiki.debian.org/JulianAndresKlode and http://jak-linux.org/.

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