Experiment #1, with idle=poll kernel parameter:

$ ./clocktest 
Testing for clock jitter on 8 cpus
PASSED: largest jitter seen was 0.000479

Testing clock direction for 5 minutes...
PASSED: Iteration 0 delta: 0.000101
PASSED: Iteration 1 delta: 0.000124
PASSED: Iteration 2 delta: 0.000061
PASSED: Iteration 3 delta: 0.000094
PASSED: Iteration 4 delta: 0.000107
clock direction test: sleeptime 60 sec per iteration, failed iterations: 0

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https://bugs.launchpad.net/bugs/1564949

Title:
  Severe latency/skew on AMD Opetron processor

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