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2025-11-24 - 03:15
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot4.osadl.org (updated Sun Nov 23, 2025 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1684232993530,4cyclictest2771399-21kworker/2:3+pm10:41:142
1684225993531,3cyclictest136-1kworker/0:1H+kblockd10:41:130
1684232993122,2cyclictest2054128-21kthreadcore12:25:162
168423299281,23cyclictest1826111-21latency_hist09:25:012
168422999281,21cyclictest191rcu_preempt12:28:191
168422999271,24cyclictest1901957-21gltestperf10:25:161
168423299261,22cyclictest1756277-21apt-get08:20:132
168423299261,22cyclictest1745744-21apt-get08:10:142
168423299261,21cyclictest0-21swapper/211:50:132
168423299260,22cyclictest220-21jbd2/nvme0n1p2-810:15:142
168422999261,3cyclictest1807521-21apt-get09:10:111
168422599260,3cyclictest1957505-21rm11:07:350
1684232992520,3cyclictest1876522-21apt-get10:05:112
168423299251,3cyclictest1710277-21apt-get07:35:122
168423299251,21cyclictest2040534-21diskstats12:15:142
168423299251,21cyclictest1750797-21apt-get08:15:132
168423299251,21cyclictest1740666-21apt-get08:05:122
168423299251,21cyclictest0-21swapper/208:45:132
168423299250,5cyclictest1707428-21/usr/sbin/munin07:30:172
168422999253,3cyclictest311ktimers/111:26:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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