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2025-07-15 - 03:08
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Mon Jul 14, 2025 12:46:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
211929499348347,1cyclictest2159157-21kworker/7:008:53:027
211929499347346,1cyclictest2240351-21kworker/7:210:36:027
211929499347346,1cyclictest2240351-21kworker/7:210:36:027
211929499344343,1cyclictest2300518-21kworker/7:012:15:027
211929499344343,1cyclictest2240351-21kworker/7:211:55:027
211929499344343,1cyclictest2240351-21kworker/7:211:25:027
211929499344343,1cyclictest2159157-21kworker/7:008:48:027
211929499343341,1cyclictest2300518-21kworker/7:012:34:037
211929499342341,1cyclictest3598326-21kworker/7:007:25:027
211929499342341,1cyclictest2240351-21kworker/7:212:00:037
211929499342341,1cyclictest2159157-21kworker/7:009:25:027
211929499342341,1cyclictest2159157-21kworker/7:008:57:027
211929499342341,1cyclictest2159157-21kworker/7:008:29:027
211929499342339,1cyclictest2159157-21kworker/7:010:02:027
211929499341340,1cyclictest3598326-21kworker/7:007:20:027
211929499341340,1cyclictest2240351-21kworker/7:212:14:037
211929499341340,1cyclictest2240351-21kworker/7:210:45:027
211929499341340,1cyclictest2240351-21kworker/7:210:31:017
211929499341340,1cyclictest2159157-21kworker/7:010:15:027
211929499341340,1cyclictest2159157-21kworker/7:009:59:027
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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