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2026-03-06 - 15:34
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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 Fri Mar 06, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2632121709,49sleep226405-21grep07:02:252
2535121695,19sleep00-21swapper/007:01:000
268769910553,43cyclictest17400-21latency_hist10:25:492
26026210118,47sleep10-21swapper/107:02:191
2687699964,8cyclictest0-21swapper/210:16:102
2687699964,8cyclictest0-21swapper/210:16:102
26876999640,47cyclictest0-21swapper/207:36:222
26876999633,12cyclictest0-21swapper/209:41:332
26876999432,57cyclictest0-21swapper/210:26:062
26866999477,11cyclictest22448-21systemd-run08:30:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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