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2026-04-15 - 02:14
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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
Characteristics of the 20 highest latencies:
System rackdslot0.osadl.org (updated Tue Apr 14, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8587992624,1cyclictest8738-21mii-tool10:00:171
858699252,5cyclictest22298-21date07:35:010
8587992212,10cyclictest0-21swapper/111:54:481
858899210,5cyclictest24783-21cstates08:35:152
8588992017,2cyclictest20811-21ntp_kernel_pll_10:20:172
8588992013,6cyclictest843-21systemd-network09:01:122
858799202,17cyclictest2069-21systemd-udevd12:14:521
8587992010,0cyclictest0-21swapper/107:11:191
858699203,16cyclictest31822-21cstates12:35:150
858699203,16cyclictest0-21swapper/011:50:000
858699200,19cyclictest3185-21ntp_kernel_pll_09:50:180
858899193,1cyclictest0-21swapper/208:06:412
8588991914,3cyclictest13939-21latency_hist07:20:002
8588991914,1cyclictest0-21swapper/211:10:212
858699192,2cyclictest29418-21nfsd407:45:180
858699191,1cyclictest0-21swapper/008:55:150
858699190,18cyclictest0-21swapper/009:24:480
858899183,1cyclictest0-21swapper/208:50:012
858899182,15cyclictest28-21ksoftirqd/208:15:262
858899182,15cyclictest0-21swapper/209:27:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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