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2026-06-02 - 18:21
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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 Tue Jun 02, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1051212312270,28sleep00-21swapper/007:08:540
1052142301260,27sleep10-21swapper/107:09:541
179699660,3rtkit-daemon1795-21rtkit-daemon09:24:321
179699600,18rtkit-daemon0-21swapper/012:25:250
2858862570,4sleep10-21swapper/112:07:061
179699550,19rtkit-daemon163826-21ssh09:22:010
2584122540,4sleep0258411-21seq11:30:160
179699510,4rtkit-daemon1795-21rtkit-daemon10:24:320
179699510,3rtkit-daemon1795-21rtkit-daemon08:44:331
179699500,4rtkit-daemon1795-21rtkit-daemon09:51:170
179699500,4rtkit-daemon1795-21rtkit-daemon08:55:100
179699500,3rtkit-daemon1795-21rtkit-daemon11:42:130
179699480,4rtkit-daemon1795-21rtkit-daemon10:11:051
179699480,3rtkit-daemon1795-21rtkit-daemon12:13:450
179699480,3rtkit-daemon1795-21rtkit-daemon12:01:391
179699480,3rtkit-daemon1795-21rtkit-daemon08:38:121
10532499462,16cyclictest141332-21apt-get08:40:130
179699440,4rtkit-daemon1795-21rtkit-daemon09:07:410
10532999410,7cyclictest26-21ksoftirqd/110:35:001
10532999371,9cyclictest26-21ksoftirqd/112:10:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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