Gustin Johnson wrote: > Ralf Mardorf wrote: > > Gustin Johnson wrote: > >> This is expected on new hardware. The CPU is changing its frequency > >> based on load, just like a laptop. I usually disable this when doing > >> audio work on my laptop. ON KDE this is a simple right click on the > >> power manager. My current DAW does not support this so I have never > >> needed to look for it in 64Studio. > > Thank you :) > > > for 64 Studio's hwinfo the frequency is fine and indeed KPowersafe says > > "CPU Frequency Policy - not supported", but for Suse I changed it from > > "Dynamic" to "Performance" and now the 1000MHz CPU is a 2100MHz CPU ;). > > When not doing DAW work, I would change back to Dynamic. Most of the > time this is fine, but the frequency switching can be a problem with low > latency work.
I'll borrow a power meter and see how much the difference is. Temperature for 64 Studio always clocking 2100MHz, is the same as for Suse, most times clocking 1000MHz, ca. 40°C. Actual I only will use 64 Studio and just take a look sometimes at Suse, at the moment I'm only back to Suse, because 64 Studio's upgrade to Lenny, the changes for Reaper etc. "disabled" some applications for 64 Studio. I think it's good that the frequency policy isn't supported for 64 Studio and I don't know how to enable it. I'll think about changing back to Dynamic, resp. try to enable this for 64 Studio, if there is a extreme difference in the electric load. Maybe "Dynamic" was the cause that Suse had less good latencies as 64 Studio. I hope I will have the time to test Rosegarden for 64 Studio and Suse with RTC as timer this night, it looks like I have to defer it to tomorrow. If I understand Paul Davis right "do you understand that nice values and RT scheduling are completely unrelated to each other? that is to say: nice values can never be used to get RT scheduling, and an RT-scheduled task's nice values are irrelevant.", this means that it doesn't matter if nice in limits.conf is set to -10 or -19, but maybe it's a misunderstanding. Anyway, if RTC won't help, the jitter might has to do with the scheduling :S. Cheers, Ralf
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