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2026-03-11 - 13:39
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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 rackbslot7.osadl.org (updated Wed Mar 11, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2771822890,104sleep2200-21systemd-journal19:05:302
2771822890,104sleep2200-21systemd-journal19:05:302
27963991194,77cyclictest14734-21apt-get20:00:440
27963991194,77cyclictest14734-21apt-get20:00:440
27963991194,77cyclictest14734-21apt-get20:00:440
27963991178,92cyclictest3747-21apt-get21:05:500
2747921146,16sleep00-21swapper/019:02:310
2747921146,16sleep00-21swapper/019:02:310
26736211311,70sleep126754-21kernelversion19:01:011
26736211311,70sleep126754-21kernelversion19:01:011
27963991042,81cyclictest3743-21diskmemload23:20:470
27963999976,8cyclictest181rcu_preempt22:20:320
27997999753,35cyclictest32560-21modprobe00:35:292
27997999753,35cyclictest32560-21modprobe00:35:292
2796399953,64cyclictest1-21systemd23:55:300
27997999355,8cyclictest181rcu_preempt21:55:492
2799799925,70cyclictest19548-21apt-get20:15:442
2799799925,70cyclictest19548-21apt-get20:15:442
27997999138,17cyclictest181rcu_preempt00:00:252
27997999047,8cyclictest181rcu_preempt22:05:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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