Date: Fri, 5 Aug 2005 13:09:31 -0400 From: John Baldwin <jhb@FreeBSD.org> To: Eric Anderson <anderson@centtech.com> Cc: freebsd-current@FreeBSD.org Subject: Re: Pending issues Message-ID: <200508051309.31730.jhb@FreeBSD.org> In-Reply-To: <42F3713D.80509@centtech.com> References: <42EFD785.5000409@centtech.com> <200508021720.45054.jhb@FreeBSD.org> <42F3713D.80509@centtech.com>
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On Friday 05 August 2005 10:01 am, Eric Anderson wrote: > John Baldwin wrote: > > On Tuesday 02 August 2005 04:57 pm, Eric Anderson wrote: > >>John Baldwin wrote: > >>>On Tuesday 02 August 2005 04:28 pm, Eric Anderson wrote: > >>>>Ok, here's a small list of issues pending that I can see on -current > >>>>(and I saw these on 6- branch too before 7.0). > >>>> > >>>>- Time ticks along correctly, but anything using an interval will be 2x > >>>>off. For instance - ping will only send a ping every 2 seconds instead > >>>>of every second. systat -vmstat 1 refreshes every 2 seconds, etc. > >>>>Disabling APIC 'fixes' it. > >>> > >>>Are you using the i8254 timecounter or some other timecounter? > >> > >>kern.timecounter.choice: TSC(800) ACPI-fast(1000) i8254(0) > >> dummy(-1000000) kern.timecounter.hardware: ACPI-fast > >> > >>Which is the default (I'm not forcing anything anywhere). I believe at > >>one time I tried i8254, but it made no difference. I can try it again > >>if you think it's a worthy experiment. > > > > I would try both i8254 and TSC and see if it makes a difference. > > Can I do this via sysctl, or do I need to rebuild my kernel? sysctl. Just write the name of the new one to kern.timecounter.hardware -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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