Re: [patch] recover losed timer interrupt using the TSC [Re: [patch] kstat change to see how much Li

Brandon S. Allbery KF8NH (allbery@kf8nh.apk.net)
Wed, 17 Mar 1999 06:47:51 -0500

In message <DCA707608CD@rkdvmks1.ngate.uni-regensburg.de>, "Ulrich Windl" write
s:
+-----
| As a side-note: This is from Johan Swenker as a contribution to an
| NTP FAQ; have you considered it?
|
| ---------
| Question
| Every once in a while my system looses 30 msec. How comes?
|
| Answer
| You are running Linux; you are using automatic module loading using
| /sbin/kerneld. During module loading the kernel does not take good
| care of the time. If you can spare the memory, please load the
| modules at boot time.
+--->8

Actually, I found that the automatic "rmmod -a" done every minute or so on
Red Hat systems had an even bigger effect on drift --- even if there weren't
any modules to be unloaded. (Sadly, building a static kernel and killing the
module stuff didn't make it entirely stable.)

-- 
brandon s. allbery	[os/2][linux][solaris][japh]	 allbery@kf8nh.apk.net
system administrator	     [WAY too many hats]	   allbery@ece.cmu.edu
carnegie mellon / electrical and computer engineering			 KF8NH
     We are Linux. Resistance is an indication that you missed the point.


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