Date: Mon, 23 Jan 2012 21:30:12 GMT From: Rob Lampe <rlampe@tqhosting.com> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/164419: 9.0-RELEASE clock stops in Xen 3.2.1 Message-ID: <201201232130.q0NLUC5J062228@freefall.freebsd.org>
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The following reply was made to PR misc/164419; it has been noted by GNATS. From: Rob Lampe <rlampe@tqhosting.com> To: Bruce Cran <bruce@cran.org.uk> Cc: freebsd-gnats-submit@freebsd.org Subject: Re: misc/164419: 9.0-RELEASE clock stops in Xen 3.2.1 Date: Mon, 23 Jan 2012 15:55:40 -0500 --14dae9340fcbce831b04b7384056 Content-Type: text/plain; charset=ISO-8859-1 Thanks for the info. It seems to be running well now. On Mon, Jan 23, 2012 at 3:31 PM, Bruce Cran <bruce@cran.org.uk> wrote: > On 23/01/2012 20:14, Robert Lampe wrote: > >> After following the freebsd-update instructions (http://www.freebsd.org/* >> *releases/9.0R/installation.**html<http://www.freebsd.org/releases/9.0R/installation.html>) >> to upgrade to 9.0-RELEASE, we have found that VMs running in HVM mode in >> Xen 3.2.1 have an issue where the clock stops working after about 3 >> minutes: # date Mon Jan 23 20:06:21 UTC 2012 # date Mon Jan 23 20:09:48 UTC >> 2012 Any other call of date after this outputs the same result. New >> processes cannot be started and the machine is essentially frozen. >> > > The timecounter code was overhauled for 9.0, making progress towards a > 'tickless' kernel. As a quick workaround you should be able to set > kern.eventtimer.periodic=1 to get ticks going again. You might want to add > it to /etc/sysctl.conf to make it permanent until a proper fix can be made. > > -- > Bruce Cran > -- Rob Lampe Tranquil Hosting / RootBSD www.tqhosting.com www.rootbsd.net --14dae9340fcbce831b04b7384056 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <div>Thanks for the info. It seems to be running well now.</div><br><div cl= ass=3D"gmail_quote">On Mon, Jan 23, 2012 at 3:31 PM, Bruce Cran <span dir= =3D"ltr"><<a href=3D"mailto:bruce@cran.org.uk" target=3D"_blank">bruce@c= ran.org.uk</a>></span> wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"> On 23/01/2012 20:14, Robert Lampe wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"> After following the freebsd-update instructions (<a href=3D"http://www.free= bsd.org/releases/9.0R/installation.html" target=3D"_blank">http://www.freeb= sd.org/<u></u>releases/9.0R/installation.<u></u>html</a>) to upgrade to 9.0= -RELEASE, we have found that VMs running in HVM mode in Xen 3.2.1 have an i= ssue where the clock stops working after about 3 minutes: # date Mon Jan 23= 20:06:21 UTC 2012 # date Mon Jan 23 20:09:48 UTC 2012 Any other call of da= te after this outputs the same result. New processes cannot be started and = the machine is essentially frozen.<br> </blockquote> <br> The timecounter code was overhauled for 9.0, making progress towards a '= ;tickless' kernel. As a quick workaround you should be able to set kern= .eventtimer.periodic=3D1 to get ticks going again. You might want to add it= to /etc/sysctl.conf to make it permanent until a proper fix can be made.<s= pan><font color=3D"#888888"><br> <br> -- <br> Bruce Cran<br> </font></span></blockquote></div><br><br clear=3D"all"><div><br></div>-- <b= r>Rob Lampe<div>Tranquil Hosting / RootBSD</div><div><a href=3D"http://www.= tqhosting.com" target=3D"_blank">www.tqhosting.com</a><br></div><div><a hre= f=3D"http://www.rootbsd.net" target=3D"_blank">www.rootbsd.net</a><br> </div><br> --14dae9340fcbce831b04b7384056--
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