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2026-07-01 - 16:20
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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 rack3slot6.osadl.org (updated Wed Jul 01, 2026 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3102210129,25sleep10-21swapper/107:07:091
2978821000,6chrt29789-21/usr/sbin/munin11:20:161
9092970,5chrt908-21/usr/sbin/munin08:30:241
258662940,6chrt25867-21if_err_enp2s009:40:230
3554998974,11cyclictest26-21ksoftirqd/110:15:251
3554998949,26cyclictest26-21ksoftirqd/112:15:121
3554998871,10cyclictest14270-21kworker/1:009:20:121
213928136,28sleep00-21swapper/007:05:180
3554997947,20cyclictest26-21ksoftirqd/109:30:131
3554997749,16cyclictest26-21ksoftirqd/110:35:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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