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2026-05-09 - 22:27
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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 Sat May 09, 2026 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2775213915,83sleep22795-21apt-get07:01:322
2835211411,74sleep02869-21unin-run07:01:340
30369910045,49cyclictest23256-21timerandwakeup09:22:082
303699983,51cyclictest6522-21apt-get11:36:432
3036999654,35cyclictest30061-21ssh12:16:312
3036999654,35cyclictest30061-21ssh12:16:312
3036999649,40cyclictest9030-21acpi10:46:412
3036999649,40cyclictest9030-21acpi10:46:412
3036999649,40cyclictest9030-21acpi10:46:412
3036999649,40cyclictest9030-21acpi10:46:412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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