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2026-05-27 - 08:33
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 10 highest latencies:
System rackfslot7.osadl.org (updated Wed May 27, 2026 00:46:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
211993499114113,1cyclictest2266177-21df_inode23:35:144
21199349911314,99cyclictest0-21swapper/400:10:164
2119934999535,39cyclictest1086-21runrttasks23:45:504
2119934998729,39cyclictest2124296-21ld19:15:204
2119934998628,19cyclictest191rcu_preempt22:45:164
211993499857,59cyclictest2271134-21kworker/u32:5+events_unbound00:20:484
2119934997978,1cyclictest2228675-21ntpq22:25:204
211993499780,59cyclictest2264798-21grep23:30:224
2119934997557,18cyclictest2119929-21cyclictest00:07:364
2119934997536,39cyclictest2143333-21ntpq19:50:204
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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