Date: Sat, 24 Sep 2011 13:38:32 +0800 From: Adrian Chadd <adrian@freebsd.org> To: Alexander Motin <mav@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: ath / 802.11n performance issues and timer code Message-ID: <CAJ-VmokxYhCgMu_6G1fbvgTZ_kNPUP=3Wy2eaTRJVA2r5xt60A@mail.gmail.com> In-Reply-To: <4E7D6700.4080302@FreeBSD.org> References: <CAJ-VmomZyDJV62yCQOvG=UB6H4wfz9=3_cWzEL7vWAA14TCyYA@mail.gmail.com> <4E7CFC42.8000409@FreeBSD.org> <CAJ-Vmom_EkGCe4vA04B4Z1gkVGoybndSwEC78WKFReDMV=picw@mail.gmail.com> <4E7D6700.4080302@FreeBSD.org>
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I'll get you a trace soon. I noticed a much smaller but valid looking effect when doing this on my eeepc. If I enable idletick, I get an extra 15-25mbit/sec 11n TX throughput. kern.eventtimer.choice: LAPIC(400) i8254(100) RTC(0) kern.eventtimer.et.LAPIC.flags: 15 kern.eventtimer.et.LAPIC.frequency: 35003954 kern.eventtimer.et.LAPIC.quality: 400 kern.eventtimer.et.i8254.flags: 1 kern.eventtimer.et.i8254.frequency: 1193182 kern.eventtimer.et.i8254.quality: 100 kern.eventtimer.et.RTC.flags: 17 kern.eventtimer.et.RTC.frequency: 32768 kern.eventtimer.et.RTC.quality: 0 kern.eventtimer.periodic: 0 kern.eventtimer.timer: LAPIC kern.eventtimer.idletick: 1 kern.eventtimer.singlemul: 4 That's running r222417 -HEAD though. Thanks, adrian
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