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2025-10-19 - 08:59
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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 rack1slot3.osadl.org (updated Sun Oct 19, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
308815899140,12cyclictest0-21swapper/323:50:133
308815899130,12cyclictest0-21swapper/319:35:143
308815899120,11cyclictest69450irq/121-eno122:25:143
308815899120,11cyclictest0-21swapper/322:35:013
308815899120,11cyclictest0-21swapper/321:25:143
308815899120,11cyclictest0-21swapper/320:10:023
308815899120,11cyclictest0-21swapper/320:05:123
308815899120,11cyclictest0-21swapper/319:25:013
308815899120,0cyclictest0-21swapper/323:40:113
308815899119,1cyclictest69450irq/121-eno123:30:153
3088158991111,0cyclictest69450irq/121-eno121:15:213
3088158991111,0cyclictest69450irq/121-eno119:50:133
3088158991111,0cyclictest69450irq/121-eno100:10:173
3088158991110,1cyclictest69450irq/121-eno120:45:123
3088158991110,0cyclictest0-21swapper/322:05:143
3088158991110,0cyclictest0-21swapper/321:10:143
3088158991110,0cyclictest0-21swapper/320:25:133
308815899110,9cyclictest69450irq/121-eno100:28:333
308815899110,9cyclictest0-21swapper/321:00:163
308815899110,10cyclictest69450irq/121-eno122:58:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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