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2025-12-28 - 06:24
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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 rackbslot7.osadl.org (updated Sun Dec 28, 2025 00:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1380821770,26sleep20-21swapper/219:05:432
1380821770,26sleep20-21swapper/219:05:432
14742991193,93cyclictest25528-21apt-get19:39:511
1931021030,7sleep10-21swapper/120:59:581
1931021030,7sleep10-21swapper/120:59:581
147429910345,17cyclictest2384-21latency_hist23:19:411
14742991003,37cyclictest25790-21latency22:10:031
1474299994,38cyclictest24508-21timerwakeupswit19:35:121
1474299994,38cyclictest24508-21timerwakeupswit19:35:121
14742999939,15cyclictest3707-21grep23:20:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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