[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: kern/56322: Excessive clock drift
The following reply was made to PR kern/56322; it has been noted by GNATS.
From: Frank Kardel <kardel%netbsd.org@localhost>
Subject: Re: kern/56322: Excessive clock drift
Date: Thu, 22 Jul 2021 17:02:47 +0200
True, but what was listed in dmesg output by dholland@ was
This is the relevant material I see in dmesg, which isn't much use.
[ 1.000000] timecounter: Timecounters tick every 10.000 msec
[ 1.000000] timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
[ 1.000003] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
[ 1.051023] timecounter: Timecounter "TSC" frequency 3517182870 Hz quality 3000
So I had to propose the next known workable alternative instead of timecounters that
haven't been detected :-). HPET is sometimes disabled in BIOS.
So far we do not know the output of "sysctl kern.timercounter".
On 07/22/21 12:30, Joerg Sonnenberger wrote:
> The following reply was made to PR kern/56322; it has been noted by GNATS.
> From: Joerg Sonnenberger <joerg%bec.de@localhost>
> To: gnats-bugs%netbsd.org@localhost
> Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
> netbsd-bugs%netbsd.org@localhost, dholland%NetBSD.org@localhost
> Subject: Re: kern/56322: Excessive clock drift
> Date: Thu, 22 Jul 2021 12:26:11 +0200
> On Thu, Jul 22, 2021 at 05:50:01AM +0000, Frank Kardel wrote:
> > Can you try
> > sysctl -w kern.timecounter.hardware=i8254
> On x86, you normally have much better options available. HPET or the PCI
> hostbridge (which the ACPI time counter also uses) are much faster and
> have a higher resolution.
Main Index |
Thread Index |