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2025-11-17 - 23:36
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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 rackcslot4.osadl.org (updated Mon Nov 17, 2025 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34344052266183,29sleep00-21swapper/007:08:000
34342372262180,28sleep10-21swapper/107:06:131
34347449915253,83cyclictest3633376-21latency_hist12:25:011
343474499652,42cyclictest3523723-40apt-check10:00:241
343474499641,30cyclictest3573610-21munin-run11:05:011
343474499632,40cyclictest3531233-21apt-get10:10:171
343474499631,42cyclictest3539379-21apt-get10:20:131
343474499630,31cyclictest3455742-21ls08:00:001
343474499622,41cyclictest3519486-21apt-get09:55:171
3434744996210,37cyclictest3485218-21sed09:10:221
343474499611,29cyclictest3581147-21/usr/sbin/munin11:15:011
343474499590,28cyclictest3634966-21sensors12:25:251
343474499590,26cyclictest3554576-21apt-config10:40:021
125899590,4rtkit-daemon1257-21rtkit-daemon12:04:341
125899590,4rtkit-daemon1257-21rtkit-daemon11:22:591
343474499582,36cyclictest3597172-21apt-get11:35:151
343474499581,38cyclictest3566406-21apt-get10:55:161
343474499581,38cyclictest3467431-21apt-get08:30:071
125899580,4rtkit-daemon1257-21rtkit-daemon10:29:051
125899580,4rtkit-daemon1257-21rtkit-daemon10:07:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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