Date: Tue, 10 Feb 2009 17:09:30 +0100 From: Bengt Ahlgren <bengta@sics.se> To: Ian Smith <smithi@nimnet.asn.au> Cc: freebsd-mobile@freebsd.org Subject: Re: Problems with ath at kern.hz=100 Message-ID: <uh78woel1dx.fsf@P142.sics.se> In-Reply-To: <uh7d4dql1hh.fsf@P142.sics.se> (Bengt Ahlgren's message of "Tue\, 10 Feb 2009 17\:07\:22 %2B0100") References: <uh7iqnjzzi9.fsf@P142.sics.se> <20090210154047.N38905@sola.nimnet.asn.au> <uh7d4dql1hh.fsf@P142.sics.se>
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Bengt Ahlgren <bengta@sics.se> writes: > Ian Smith <smithi@nimnet.asn.au> writes: > >> On Mon, 9 Feb 2009, Bengt Ahlgren wrote: >> >> > I was changing kern.hz to 100 on my IBM X40 (Pentium-M) laptop to see >> > whether that saves some battery, but ran into problems with ath not >> > working properly. At first I thought that my hardware was failing, >> > but changing hz back to 1000 solved the problem. I am running >> > 7.1-RELEASE-p1 and have the following Atheros chip: >> > >> > Feb 9 11:13:10 P142 kernel: ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413) >> > Feb 9 11:13:10 P142 kernel: ath0: <Atheros 5212> mem 0xd0200000-0xd020ffff irq 11 at device 2.0 on pci2 >> > Feb 9 11:13:10 P142 kernel: ath0: [ITHREAD] >> > Feb 9 11:13:10 P142 kernel: ath0: WARNING: using obsoleted if_watchdog interface >> > Feb 9 11:13:10 P142 kernel: ath0: Ethernet address: 00:05:4e:4e:1f:c7 >> > Feb 9 11:13:10 P142 kernel: ath0: mac 5.6 phy 4.1 5ghz radio 1.7 2ghz radio 2.3 >> >> There's an order of magnitude room to move between 100 and 1000 Hz. >> You could also try with maybe 250 or 500? > > I have been running with hz=250 for a while now without the problem > occuring. Just when sending this off, it also happened with hz=250. Bengt
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