Jeff Roberson wrote: > On Tue, 16 Oct 2007, Kris Kennaway wrote: > >> [LoN]Kamikaze wrote: >>> I know that RELENG_7 is not considered very near-release, but I >>> thought I'd >>> give my 2ยข in the hope that I might have a little influence on the >>> scheduler >>> development to my benefit. >>> >>> The switch from RELENG_6 to RELENG_7 went relatively smooth and apart >>> from ipw >>> causing panics. However there is one thing that's disturbing and this >>> is the >>> scheduler. I only have single core machines, so whatever I say only >>> applies to >>> those. If you think single-core machines are no longer important, >>> feel free to >>> ignore this. In deed, just ignore me however much you like. >>> >>>> From my perspective scheduling on RELENG_6 was way better. Even on a >>>> full >>> workload like a portupgrade the focused application (both in X and on >>> the >>> console) always received enough cycles to run smoothly and >>> applications that >>> ran in background like audio players also kept on running fine. >>> >>> Quite the contrary on RELENG_7. During a portupgrade or even worse >>> 'pkgdb -L' >>> (recovering lost dependencies) audio players (both graphical and >>> mplayer) >>> scatter, either because they don't get the hard-disk or CPU-cycles >>> (which one, >>> I don't know) and the focused application also often hangs. It just >>> looks like >>> occasionally (under load) everything freezes for a second and then >>> goes on >>> relatively normal. >>> >>> I've got the impression that things compile a little faster (that >>> might be my >>> imagination, though), but I'd rather have a smooth working experience. >>> >>> This is just my view of the situation and I suppose it is only one of >>> many. I >>> bid you be merciful with us single-core people, who cannot afford a >>> slick >>> multi-core machine, because we worry how to pay for our food at the >>> end of the >>> month. >> >> Not to say that any problems that might have developed with SCHED_4BSD >> should not be fixed, but you should give SCHED_ULE a try since it >> brings benefits even for single CPU systems (e.g. better interactive >> response). > > It would indeed be good to know if ULE improves things for you. > However, there have been a number of other reports about non-scheduler > related regressions with x windows on 7.0. I run 7.0 on a UP laptop > without difficulty. I wonder if it has something to do with a > particular device or driver. > > Jeff Well, I'll certainly see soon. However I have switched from Xorg 7.2 to 7.3 first and that worked fine. Only after the update RELENG_6 to RELENG_7 did those issues appear. I have now recompiled all my 700+ ports to rule out compatibility problems (I had lots of panics before I did that, now everything is stable, unless I try to use my wireless device) and the performance issue remains.Received on Tue Oct 16 2007 - 18:08:33 UTC
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