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2026-07-04 - 13:43
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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 rack8slot4.osadl.org (updated Sat Jul 04, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14017282231169,19sleep60-21swapper/619:08:246
14018272229167,19sleep20-21swapper/219:09:482
14016582225165,19sleep10-21swapper/119:07:221
14015172225165,49sleep30-21swapper/319:05:233
14016262223162,19sleep50-21swapper/519:06:545
14018402212183,19sleep40-21swapper/419:09:594
14016212209181,19sleep00-21swapper/019:06:490
14017672206178,18sleep70-21swapper/719:08:577
140216599350,33cyclictest1544935-21latency_hist23:25:023
140216199340,32cyclictest1516309-21expr22:35:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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