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2026-08-31 - 10:06
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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 Mon Aug 31, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2331437997454,19cyclictest331ktimers/121:24:501
2331437997437,18cyclictest85750irq/36-eno1-TxRx-223:19:221
2331437997335,19cyclictest2331435-21cyclictest21:17:161
2331437997315,39cyclictest2347750-21taskset19:37:121
2331437997312,60cyclictest2459688-21ntpq23:00:201
2331437997214,39cyclictest2478799-21ntpq23:35:221
2331437997113,39cyclictest85750irq/36-eno1-TxRx-221:15:021
2331437997112,58cyclictest0-21swapper/120:35:271
2331437997112,58cyclictest0-21swapper/120:35:261
2331437997112,39cyclictest2451195-21ntpq22:45:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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