On Wed, Oct 08, 2008 at 01:41:21PM +0800, Aubrey Li wrote: > On Wed, Oct 8, 2008 at 11:43 AM, Jens Elkner > > On Wed, Oct 08, 2008 at 10:52:51AM +0800, Aubrey Li wrote:
> >> > Oct 5 18:11:30 sol cpudrv: [ID 569748 kern.info] NOTICE: cpu_acpi: > >> > no ACPI _TSS. SpeedStep/Throttling/Deep C states not supported on this > >> > platform. > >> > >> Does it work for you? > > Looks much better - gives a better clue! However, now smart users > > probably start to ask, why a modern OS doesn't support SpeedStep etc. > > ... ;-) > I guess you mean a modem OS doesn't support SpeedStep on the old > machine? May be this or a deactivated option in the BIOS whatsoever (not sure, whether an S5000PAL with E5440 CPUs - see http://support.intel.com/support/motherboards/server/s5000pal/sb/CS-022639.htm - is such an old machine ...) > Shortly, TSC is variant on those old platforms, that is, TSC ticks > according to the current processor clock. If speedstep change the CPU clock, > TSC will be impacted. All the related routines in the Solaris kernel will > become > unreliable. That's why we don't support speedstep on those old machines. Ahh ok - thanx for the update. However, you probably do not want, that people ask the same question again and again because just joined [the list, etc.]. So I can understand Caspar's and James' +1. So, if there would be a man page, which explains, how to check, whether speedstep and friends are enabled and perhaps some background information like yours would be fine IMHO. However, something like: Oct 5 18:11:30 sol cpudrv: [ID 569748 kern.info] NOTICE: cpu_acpi: no ACPI _TSS. See http://sun.com/msg/KRNL-8000-XY would be nice, too. As said, it might be such a simple thing like 'speedstep disabled' option/default in the BIOS - sometimes one just needs a hint ... Regards, jel. -- Otto-von-Guericke University http://www.cs.uni-magdeburg.de/ Department of Computer Science Geb. 29 R 027, Universitaetsplatz 2 39106 Magdeburg, Germany Tel: +49 391 67 12768 _______________________________________________ opensolaris-code mailing list opensolaris-code@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/opensolaris-code
