Re: Still seeing "calcru: runtime went backwards" messages

From: Poul-Henning Kamp <phk_at_phk.freebsd.dk>
Date: Wed, 01 Mar 2006 22:15:58 +0000
In message <44061AFC.4080109_at_rogers.com>, Mike Jakubik writes:


>Mar  1 17:04:27 fbsd kernel: calcru: runtime went backwards from 6995 
>usec to 6994 usec for pid 662 (perl)

Backwards steps of this small nature are to be expected from the
cpu_tick (TSC) calibration in kern_tc.c

It is possible that they can be eliminated with a more precise (and
therefore timeconsuming) calibration calculation.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk_at_FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
Received on Wed Mar 01 2006 - 21:16:01 UTC

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