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2025-09-10 - 08:15
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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 rack3slot3.osadl.org (updated Wed Sep 10, 2025 00:46:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9252211197sleep90-21swapper/919:05:5611
9397210995sleep40-21swapper/419:07:516
9321210894sleep20-21swapper/219:06:494
7808210891sleep00-21swapper/019:05:220
6440210693sleep80-21swapper/819:05:0610
122501010irq/42-ahci0-21swapper/119:09:131
3066350960irq/52-eth0-rx-0-21swapper/319:09:315
3066350880irq/52-eth0-rx-0-21swapper/519:06:007
12250740irq/42-ahci0-21swapper/719:08:379
934926961sleep110-21swapper/1119:07:103
926626353sleep60-21swapper/619:06:058
940326253sleep100-21swapper/1019:07:572
9714993634cyclictest2443-21lldpd19:13:440
9714992813cyclictest25532-21chrt19:30:010
975599252cyclictest831ksoftirqd/1023:29:362
975599247cyclictest831ksoftirqd/1023:31:542
975599247cyclictest831ksoftirqd/1021:03:562
975599241cyclictest831ksoftirqd/1000:27:242
975599236cyclictest831ksoftirqd/1022:16:332
975599236cyclictest831ksoftirqd/1000:34:452
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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