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2026-06-11 - 03:35
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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 rack3slot6.osadl.org (updated Thu Jun 11, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1319421047,80sleep013290-21/usr/sbin/munin19:05:260
81921020,5chrt251rcuc/120:00:201
13700210027,25sleep10-21swapper/119:06:341
16682910,5chrt1667-21/usr/sbin/munin23:05:220
14235999168,11cyclictest14-21ksoftirqd/023:30:120
14235999167,11cyclictest14-21ksoftirqd/020:00:150
14242998852,21cyclictest26-21ksoftirqd/120:30:121
14235998662,12cyclictest14-21ksoftirqd/023:25:120
14235998562,11cyclictest14-21ksoftirqd/000:00:110
14235998458,15cyclictest14-21ksoftirqd/023:50:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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