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2025-12-18 - 08:51
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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 rack3slot3.osadl.org (updated Fri Dec 12, 2025 00:46:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20184210692sleep10-21swapper/119:06:331
30664501000irq/53-eth0-tx-0-21swapper/419:05:186
3066350990irq/52-eth0-rx-0-21swapper/719:09:199
3066350970irq/52-eth0-rx-0-21swapper/219:06:294
12250890irq/42-ahci0-21swapper/319:08:365
2023728273sleep90-21swapper/919:07:1711
3066350730irq/52-eth0-rx-0-21swapper/1119:05:193
2013727169sleep60-21swapper/619:06:028
2025926853sleep00-21swapper/019:07:320
2028026560sleep80-21swapper/819:07:5210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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