On Wed, 1 Nov 2017, David Woodfall wrote:
Frequency scaling is either powersave or performance on this T420 with pstates in the kernel, but switching to performance hasn't helped much. The strange thing is that I have a dual core server running the same version of slackware, kernel, jack and mplayer and it has no xruns, even in powersave mode. It's also an intel CPU with pstates.
intel with p-states... performance mode does not mean no speed changes if you also have "Boost". Performance just raises the lowest speed to rated speed. Boost may then run faster. Turning boost off does seem to improve stability, though not as much as powersave to performance does. I think it is possible by fiddling with all the p-state or cpufreq settings to run at a steady speed greater than rating. Best watch temperatures though :) My 3.2 Ghz chip will run at 3.4Ghz at 100%cpu on all four cores (compile Ardour) without over heating for example. That is with no special settings other than allowing Boost on.
-- Len Ovens www.ovenwerks.net _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user
