On Tue, Apr 17, 2018 at 8:49 AM, Kevin Oberman <rkober...@gmail.com> wrote:
> On Mon, Apr 16, 2018 at 11:56 PM, Eivind Nicolay Evensen < > eivi...@terraplane.org> wrote: > > > On Wed, Apr 04, 2018 at 09:32:58AM -0400, George Mitchell wrote: > > > On 04/04/18 06:39, Alban Hertroys wrote: > > > > [...] > > > > That said, SCHED_ULE (the default scheduler for quite a while now) > was > > designed with multi-CPU configurations in mind and there are claims that > > SCHED_4BSD works better for single-CPU configurations. You may give that > a > > try, if you're not already on SCHED_4BSD. > > > > [...] > > > > > > A small, disgruntled community of FreeBSD users who have never seen > > > proof that SCHED_ULE is better than SCHED_4BSD in any environment > > > continue to regularly recompile with SCHED_4BSD. I dread the day when > > > that becomes impossible, but at least it isn't here yet. -- George > > > > Indeed 4bsd is better in my case aswell. While for some unknown to me > > reason ule performed a bit better in the 10.x series than before, in 11.x > > it again is in my case not usable. > > > > Mouse freezes for around half a second with even frequency by just moving > > it around in x11. Using 4bsd instead makes the problem go away. > > I'm actually very happy that ule became worse again because going > > back to 4bsd yet again also gave improved performance from other > > dreadfully slow but (to me) still useful programs, like darktable. > > > > With 4bsd, when adjusting shadows and highlights it is possible to see > > what I do when moving sliders. With ule it has never been better than > waiting > > 10-20-30 seconds to see where it was able to read a slider position > > and update display, when working on images around 10500x10500 greyscale. > > > > It's not single cpu/single core either: > > CPU: AMD FX(tm)-6300 Six-Core Processor (3817.45-MHz > K8-class > > CPU) > > My experience has long been that 4BSD works far better for interactive, X > based systems than ULE. Even on 10 I saw long, annoying pauses with ULE and > I don't se those with 4BSD. I'd really like to see it better known that > this is often the case. BTW, my system is 2 core/4 thread Sandybridge. > > The following has been suggested multiple times over the years on various mailing lists as the "solution" to making ULE work well for interactive tasks like running X-based desktops (in /etc/sysctl.conf): # Tune for desktop usage kern.sched.preempt_thresh=224 Works quite nicely on a 4-core AMD Phenom-II X4 960T Processor (3010.09-MHz K8-class CPU) running KDE4 using an Nvidia 210 GPU. -- Freddie Cash fjwc...@gmail.com _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
