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2026-08-31 - 07:55
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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 20 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
2331441997011,19cyclictest0-21swapper/500:00:165
2331437997031,19cyclictest0-21swapper/120:10:121
2331437997011,59cyclictest0-21swapper/121:00:221
2331437997011,19cyclictest0-21swapper/123:24:181
2331437996931,19cyclictest331ktimers/120:00:421
2331437996829,39cyclictest0-21swapper/119:21:181
2331437996810,39cyclictest2485287-21awk23:50:001
233143799670,67cyclictest0-21swapper/123:10:111
233143799667,19cyclictest0-21swapper/121:44:381
2331437996628,19cyclictest2333022-21gcc19:10:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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