-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Ralf Mardorf wrote: <snip> >>> >> No idea really. As far as I know, the timer for modern PCs is 1000, for >> DEC Alpha it was 1024, and for PIII and older it was 100 (all values in >> Hz). > > System timer is at 1,000 Hz for real-time kernels, while HR timer is at > 1,000,000,000 Hz. I don't know what's the meaning of hpet_max_user_freq,
The high resolution timer is built in to the motherboard/CPU. AFAIK all we can do is set what resolution the kernel supports which is limited by what the physical hardware can do. > resp. it's a factor, but I don't know what kind of factor, e.g. 1 > what-ever / 64 what-another-ever or 1,000,000,000 Hz / 64 what-ever or > 64 what-ever / 1,000,000,000 Hz? > I do know that MIDI jitter by Linux to equipment external the computer > will decrease when using HR timer instead of System timer. I don't know > the impact of the value for hpet_max_user_freq. What is the difference? > On another list somebody once wrote, that he has to change the value, > because mplayer wasn't fine, after he set it to 1024 mplayer was fine. I just tried it and the system seemed a little laggy, especially when switching applications. > I've got no idea, but to be honest after compiling and installing rtirq, > 4 little apps and latest Qtractor, I'll backup my 64 Studio again and > then make music without using HPET. This should be tomorrow. I planed to > do this yesterday. > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAks2faIACgkQwRXgH3rKGfO1mACfUtL0g01WExy0QxraUX0fZ3rO gcQAnijelBurz5V3bVhosW9RjkC3WpCS =6Q41 -----END PGP SIGNATURE----- _______________________________________________ 64studio-users mailing list [email protected] http://lists.64studio.com/mailman/listinfo/64studio-users
