Date: Wed, 12 Sep 2012 13:05:45 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-net@freebsd.org, freebsd-current@freebsd.org Subject: Scheduler KTR traces for 4 variants (ULE, 4BSD)x(PREEMPTION, NOPREEMPTION) on small hardware (net5501) with network traffic (Was: vr(4) troubles for AMD Geode CS5536 chipset) Message-ID: <416897292.20120912130545@serebryakov.spb.ru> In-Reply-To: <CAJ-Vmom-QQv54P24KahdzNfwhVmYKL-G8CpginQvyEQ-JFaZrQ@mail.gmail.com> References: <1865271844.20120829131610@serebryakov.spb.ru> <CAHu1Y70MynCMQTrJUMwTZ0%2BLrM1JiZFt_B77028XHfoiRgzmaA@mail.gmail.com> <1807373989.20120829223125@serebryakov.spb.ru> <20120830152726.A33776@sola.nimnet.asn.au> <534292400.20120830131158@serebryakov.spb.ru> <20120831180721.GB3208@michelle.cdnetworks.com> <50404F91.8080302@rdtc.ru> <20120903184049.GB3730@michelle.cdnetworks.com> <50443888.9080400@rdtc.ru> <20120903214333.GC3730@michelle.cdnetworks.com> <5044772C.8090302@rdtc.ru> <CAJ-VmonQhGShMASEkrxnrDU8xOQBJU%2BGnV0Nmeg4Lz2xACBRpw@mail.gmail.com> <5046FE57.3050903@rdtc.ru> <CAJ-Vmomedv-mEV3D1WHR9_eLirE=ORSVndeJJgpFweCuRPuyoA@mail.gmail.com> <5048D7A7.1030708@rdtc.ru> <CAJ-Vmon-CuAi0RBsfp%2BQB3k6GvpNiCSts7baa_jRN2tbnwVrtA@mail.gmail.com> <5048DFF8.50405@smeets.im> <CAJ-VmonvH97sk8xvMrMwX7=0zi=LhhCo8NnfwHxhtggBJ_NE=w@mail.gmail.com> <10710514011.20120906220055@serebryakov.spb.ru> <CAJ-Vmokiwh9PtF7f2UnhO==ZbAKvTn%2BrRd3Lp5oBD0%2B9nH%2BLQg@mail.gmail.com> <CAJ-Vmom6J0vThMocLj1Xm%2B2f0ekKWE8mN oB7ZvYts6kY4yEN5g@mail.gmail.com> <1828371828.20120906221136@serebryakov.spb.ru> <CAJ-Vmom-QQv54P24KahdzNfwhVmYKL-G8CpginQvyEQ-JFaZrQ@mail.gmail.com>
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Hello, Adrian. You wrote 6 =D3=C5=CE=D4=D1=C2=D2=D1 2012 =C7., 22:12:04: AC> On 6 September 2012 11:11, Lev Serebryakov <lev@freebsd.org> wrote: >> Hello, Adrian. >> You wrote 6 =D3=C5=CE=D4=D1=C2=D2=D1 2012 =C7., 22:07:08: >> >> AC> Oh don't worry about polling just yet. I just want to see what >> AC> preempt/no-preempt does with ULE and 4BSD on these little single-CPU >> AC> platforms. >> Ok, I'll do it. Should I post 4 outputs from ktrdump? Again, I don't >> understand how to interpret these data by myself. AC> Yes. Here: http://lev.serebryakov.spb.ru/ktrs/ Tarball with all 4 outputs and all configs are placed. Setup and results are described in "readme.txt". Results are strange: no visible WiFi slowdown but wired traffic slowdown now and bad freezes in all combinations but 4BSD + PREEMPTION _enabled_. --=20 // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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