Date: Wed, 2 May 2007 04:04:03 +0200 (CEST) From: Martin Dieringer <martin.dieringer@gmx.de> To: Clayton Milos <clay@milos.co.za> Cc: freebsd-stable@freebsd.org Subject: Re: clock too slow - big time offset with ntpdate Message-ID: <20070502040125.M860@thinkpad.dieringer.dyndns.org> In-Reply-To: <20070501230300.S860@thinkpad.dieringer.dyndns.org> References: <20070501204548.L860@thinkpad.dieringer.dyndns.org> <005901c78c30$63944a10$4b2e3e0a@claylaptop> <20070501230300.S860@thinkpad.dieringer.dyndns.org>
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On Tue, 1 May 2007, Martin Dieringer wrote: > On Tue, 1 May 2007, Clayton Milos wrote: > >>> Hi, >>> >>> I get about half a second time offsets after 10 seconds, and more >>> than 100s after half an hour or so. >>> I think it has to do with powerd, if I kill that, the time stays correct. >>> It happens both on a Compaq nc4000 and an IBM ThinkPad T42p laptop. >>> >>> Can this be solved? >>> thanks >>> m. >> >> This has got to do with the speed stepping of the CPU to save battery. >> Far as I know there's no fix yet. >> >> Guys is it possible to hack powerd to change a sysctl variable when it >> changes the CPU frequency or isn't it that simple? > > > Another effect of the problem seems to be the intermittent sound > output. Playback is ok when powerd is killed. > When changing freq by sysctl, I still get hickups in sound, so this > would be no solution. the hiccups have reappeared, so they are not related to powerd. I still have 0.5 seconds time offsets after 10 minutes, on the thinkpad, without powerd... m.
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