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2026-05-12 - 16:17
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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 rackbslot7.osadl.org (updated Tue May 12, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31789212400,13sleep0211rcuc/006:57:020
31429222015,49sleep20-21swapper/206:56:492
3183621898,64sleep131883-21sed06:57:041
32627991054,74cyclictest12586-21apt-get07:36:351
326319910483,11cyclictest0-21swapper/210:26:372
3263699993,74cyclictest2982-21chrt08:46:433
3262799972,53cyclictest17189-21taskset09:16:501
3262799962,77cyclictest30571-21kworker/u19:1+flush-179:007:21:431
32623999674,10cyclictest0-21swapper/008:26:350
32623999673,12cyclictest0-21swapper/007:51:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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