Date: Thu, 19 Jan 2012 19:37:35 -0700 From: Ian Lepore <freebsd@damnhippie.dyndns.org> To: Alexander Motin <mav@FreeBSD.org> Cc: freebsd-stable@FreeBSD.org Subject: Re: Strange 'hangs' with RELENG_9 Message-ID: <1327027055.1663.6.camel@revolution.hippie.lan> In-Reply-To: <4F187310.7020806@FreeBSD.org> References: <4F181FE7.30904@karolyi.hu> <4F182516.3020506@gmail.com> <4F182FB3.7050405@karolyi.hu> <4F183008.9040603@karolyi.hu> <CAFHbX1%2B7N4y1n%2B4mxmyo%2BExDtY4eOdzm7-VJxYb__Q6BRjcgCg@mail.gmail.com> <4F1835ED.3050609@karolyi.hu> <4F1836E1.1080105@karolyi.hu> <4F1848BF.2050900@karolyi.hu> <CAPjTQNGE6nAeiY=0mHr5TLv14Hqb2T_TeWx718bnvCefFwgpQA@mail.gmail.com> <4F184F8F.4040708@FreeBSD.org> <1326999941.21604.63.camel@revolution.hippie.lan> <4F187310.7020806@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 2012-01-19 at 21:46 +0200, Alexander Motin wrote: > On 01/19/12 21:05, Ian Lepore wrote: > > I saw in the eventtimers(7) manpage that there's a sysctl to change the > > timer, but when I used it the system timing went completely wonky (ntpd > > reported it was off by many seconds, a few seconds after I changed it). > > When I just tried it again the system locked up and had to be power > > cycled. (I'm trying this on old hardware where my only choices are > > i8254 and RTC, and changing to RTC apparently doesn't work well.) So I > > didn't want to recommend it to someone else. :) > > That's strange. On all systems I have, I can safely set any event timer > in any way. Though for better precision it is better to set them using > loader tunable. As it turns out, this isn't a problem with eventtimers in any way, sorry for the confusion. I had checked out and built a completely clean RELENG_9_0_0_RELEASE so that I could be sure I was testing against the offical release before telling the OP "I do/don't see similar problems." As it turns out, one of my local hacks is required if I want use the RTC clock for anything (buggy old hardware). Once I applied that patch, I can now switch eventtimers without any problems. -- Ian
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1327027055.1663.6.camel>