[ntp:questions] Period of TimerApcFunction in nt_clockstuff.c?

Chaofu Chen chaofu.chen at yahoo.com
Sun Apr 25 14:20:10 UTC 2010

Recently, I was reading the source code of NTP ports for windows. In \NTP\ntp-4.2.6p1\ports\winnt\ntpd\nt_clockstuff.c I noticed the period of TimerApcFunction is set to 43ms as default value for a 64Hz OS (which has clock resolution of 15.625ms). Where is this 43ms come from? Based on experiment result? I don't have a clue. Can someone give me some light?


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