Date: Tue, 26 Dec 1995 11:08:13 -0600 From: Jim Lowe <james@miller.cs.uwm.edu> To: current@freebsd.org Subject: Tick, tock, adjust the clock Message-ID: <199512261708.LAA14134@miller.cs.uwm.edu>
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There seems to be a problem with the Pentium clock on my mainboard with FreeBSD-current (as of a few weeks ago). It doesn't seem to keep correct time. I didn't have this problem when I ran a 486 system. I know for US$10 or a subscription to Sports Illustrated, I can get a football watch that keeps better time than my computer :-)! The mainboard is an ASUS P55TP4XE, but I also had the same problem with a SuperMicro mainboard. I run xtnpd which adjusts the clock at a fairly regular interval: ... Dec 26 02:54:02 miller-genuine-draft xntpd[75]: time reset (step) -1.803289 s Dec 26 03:01:45 miller-genuine-draft xntpd[75]: time reset (step) 1.913048 s Dec 26 03:08:09 miller-genuine-draft xntpd[75]: time reset (step) 0.465431 s Dec 26 03:14:19 miller-genuine-draft xntpd[75]: time reset (step) -1.514804 s Dec 26 03:19:52 miller-genuine-draft xntpd[75]: time reset (step) 0.452551 s Dec 26 03:26:16 miller-genuine-draft xntpd[75]: time reset (step) 0.373672 s ... These step adjustments are extremley annoying to programs that run and clock things in the 10ms range. The clock jumps forward and backward like a jumping bean. If I discontinue running xntpd my time adjustment problems go away, but then my clock doesn't keep correct time. Any ideas or fixes? Any good starting places to start hacking away to fix this? Thanks for your help, -Jim
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