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2026-07-09 - 14:22
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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 rackfslot7.osadl.org (updated Thu Jul 09, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
316052399820,81cyclictest0-21swapper/523:35:175
316052399820,81cyclictest0-21swapper/523:35:165
3160519996950,19cyclictest0-21swapper/120:40:141
3160518996543,0cyclictest191rcu_preempt19:50:160
3160521995839,19cyclictest0-21swapper/322:35:363
3160521995737,1cyclictest875-21mta-sts-daemon19:16:423
3160521995737,1cyclictest875-21mta-sts-daemon19:16:413
3160520995516,19cyclictest0-21swapper/223:00:152
3160525995213,39cyclictest0-21swapper/723:10:147
3160524995214,19cyclictest0-21swapper/620:30:166
3160520995214,19cyclictest0-21swapper/200:20:152
3160520995213,38cyclictest3160517-21cyclictest23:55:152
3160523995113,20cyclictest0-21swapper/520:20:165
3160523995111,39cyclictest0-21swapper/520:55:155
3160519995132,0cyclictest0-21swapper/100:10:141
3160519995111,39cyclictest0-21swapper/121:45:151
3160524995011,39cyclictest0-21swapper/623:55:146
3160522995031,19cyclictest0-21swapper/422:40:164
3160522995011,20cyclictest362-21jbd2/sda2-823:43:524
3160522995011,20cyclictest3251678-21kworker/u32:3+rpciod21:55:444
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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