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2026-06-03 - 05:33
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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 rackfslot7.osadl.org (updated Wed Jun 03, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1236110999213,79cyclictest1277449-21cut20:35:133
1236110999113,59cyclictest1390353-21kworker/u32:4+events_unbound00:20:393
1236110999113,59cyclictest1198835-21kworker/u32:3+events_unbound19:14:013
1236110999071,19cyclictest52-21ksoftirqd/323:24:103
1236110999014,57cyclictest1198835-21kworker/u32:3+events_unbound20:04:273
1236110998628,39cyclictest1386106-21ntpq23:50:213
123611099801,59cyclictest1329668-21/usr/sbin/munin22:10:013
1236110997517,39cyclictest1404796-21forks00:25:153
1236110997435,19cyclictest1334526-21unixbench-2d22:15:233
1236110997415,39cyclictest1362111-21unixbench-2d23:05:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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