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2025-09-17 - 01:14
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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 Tue Sep 16, 2025 12:46:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122501140irq/42-ahci0-21swapper/107:09:551
25230210995sleep30-21swapper/307:06:475
25160210995sleep90-21swapper/907:05:5411
25310210794sleep80-21swapper/807:07:5310
25278210492sleep70-21swapper/707:07:279
12250910irq/42-ahci0-21swapper/207:08:464
2448628782sleep40-21swapper/407:05:256
2520427770sleep100-21swapper/1007:06:312
2524327163sleep00-21swapper/007:06:560
3066350680irq/52-eth0-rx-0-21swapper/507:06:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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