System clock speedup with latest kernels

John Thacker thacker at math.cornell.edu
Fri Mar 10 17:39:43 UTC 2006


Anyone else seeing this:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=184593 ?

With the last two kernels, 2.6.15-1.2032_FC5 and 2.6.15-1.2038_FC5,
the system clock starts running too fast for me.  It gains about an
hour per day.  It runs so fast that NTP won't sync to any clock
servers because the jitter grows far too fast.  Rebooting to 
kernel-2.6.15-1.2009.4.2_FC5 works perfectly.  I can switch back and 
forth between the working kernel-2.6.15-1.2009.4.2_FC5 and the two 
broken kernels, and the behavior shifts between working and running 
too fast each time.  (The hardware clock runs perfectly fine too.)

Anyone else seeing it?  Any more information that would be useful?
I assume this is related to the "timer fixes" from git9 mentioned
in the 2028 update, although frankly I don't know enough to be sure.
Obviously, this is a blocker for me personally, but I haven't seen
any other complaints.

John Thacker
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