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2026-06-18 - 11:13
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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 18, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1921821310,6chrt19195-21/usr/sbin/munin23:00:141
1830721210,6chrt0-21swapper/119:55:161
16279911084,13cyclictest14-21ksoftirqd/022:05:130
16279910479,15cyclictest14-21ksoftirqd/022:10:160
1627999767,19cyclictest14-21ksoftirqd/020:40:120
1627999571,17cyclictest14-21ksoftirqd/019:25:220
1627999567,15cyclictest14-21ksoftirqd/000:30:100
1627999567,15cyclictest14-21ksoftirqd/000:30:100
1627999367,17cyclictest14-21ksoftirqd/020:15:100
1627999366,17cyclictest14-21ksoftirqd/000:15:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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