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Re: kern/56322: Excessive clock drift

The following reply was made to PR kern/56322; it has been noted by GNATS.

From: David Holland <>
Subject: Re: kern/56322: Excessive clock drift
Date: Thu, 22 Jul 2021 06:55:47 +0000

 On Thu, Jul 22, 2021 at 05:50:01AM +0000, Frank Kardel wrote:
  >  Can you post
  >  sysctl kern.timecounter
  >  ?
  >  I assume the with the
  >  ERROR: 2607 cycle TSC drift observed
  >  TSC was not picked as timecounter on your system.
 It was not then (afaik) but it was now. So,
  >  Can you try
  >  sysctl -w kern.timecounter.hardware=i8254
  >  and see whether that improves the situation.
 As of ~now when I did that it had dropped to two full minutes behind,
 in something like seven hours, so tomorrow morning should indicate
 whether the situation's better.
 David A. Holland

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