Li, Aubrey wrote: > Napanda Pemmaiah <> wrote: > > >> On 06/30/09 13:46, julia harper wrote: >> >>> Is there a way to dump the tstate of a cpu? That doesn't seem to be >>> present in the kstat cpu_info. >>> >> Currently there is no way to dump the T-State of a cpu. During the >> implementation time, since T-State >> was not widely used, observability features were not added. Might be >> in the future if seems necessary can >> either add a value to kstat or add a DTrace probe. >> >> Anup >> >>> -- jdh >>> >>> > > Change the subject. > > In the current tzmon implementation, once the temperature exceed the > threshold, > the driver just halt the system and force the user to press any key to reboot. > Can T-state help to improve this if it's available? > I haven't seen the tzmon implementation. I assume the threshold might be high and if the temperature goes that high there is a possibility platform would have sent a _TPC notification to throttle the processor. If in most platforms, if that is not the case, then I think before shutting down it is worth throttling down the processor and see if it helps. T-State might help in bringing down the temperature but will have a direct performance impact. If there is a platform that the above shutdown happens, it will be interesting to try it out.
Anup > Thanks, > -Aubrey >
