Am Mittwoch, 23. September 2015, 16:37:59 schrieb Mike Galbraith: Hi,
I don't see any reason to keep HZ=1000, there are oodles of preempt opportunities in a PREEMPT kernel.
Down side of PREEMPT_NONE is higher scheduling latency across the board. Desktop users may feel the difference under load, may gripe, anybody watching realtime latencies will gripe.
You will notice negative effects with many audio use cases and with other latency critical desktop hardware. Also simple stuff like desktop latency will worsen in case of I/O e.g.akonady,.... Any audio clitch will be annoying. Why should desktop people suffer these occassional clitches? Binary compatibility of kernel modules with SLES is no such big win. Regards --martin konold -- Dipl.-Physiker Martin Konold e r f r a k o n Erlewein, Frank, Konold & Partner - Beratende Ingenieure und Physiker Registergericht: Amtsgericht Stuttgart PR 126 Firmensitz: Adolfstraße 23, 70469 Stuttgart fon: 0711 67400963 fax: 0711 67400959 email: martin.konold@erfrakon.de http://www.erfrakon.de -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org