Date: Thu, 20 Aug 1998 20:58:48 -0500 (CDT) From: Kevin Day <toasty@home.dragondata.com> To: bde@zeta.org.au (Bruce Evans) Cc: brian@Awfulhak.org, green@unixhelp.org, bde@zeta.org.au, freebsd-current@FreeBSD.ORG, jwd@unx.sas.com, phk@critter.freebsd.dk, tlambert@primenet.com Subject: Re: 13 months of user time? Message-ID: <199808210158.UAA01630@home.dragondata.com> In-Reply-To: <199808210140.LAA11972@godzilla.zeta.org.au> from Bruce Evans at "Aug 21, 98 11:40:39 am"
next in thread | previous in thread | raw e-mail | index | archive | help
> >I reckon a diagnostic in microuptime() that compares the value > >assigned to *tv with the previous value and moans if they decrease > >may prove informative.... and maybe a similar thing in > >i8254_get_timecount() - the machine I was having problems with was > >running apm, so it used the i8254 timecounter rather than the tsc > >counter. > > The problem is quite likely to be with apm. It does bad things to > reinitialize the time. Damage is limited by not reinitializing the > time unless apm has apparently been asleep for > 2 seconds (or < -2 > seconds :-). > > Bruce FWIW, I've got a Cyrix MediaGX system that does this, has APM turned off, and continually complains: calcru: negative time -7747 ms (or whatever the message is). It's usually 2 to 10 seconds at a time when it does it. Kevin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199808210158.UAA01630>