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2026-05-13 - 15:27
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Wed May 13, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2631475998041,19cyclictest873-21mta-sts-daemon22:17:014
263147299770,44cyclictest0-21swapper/122:05:201
2631475997517,39cyclictest1-21systemd20:55:014
2631475997315,39cyclictest2810670-21cut00:35:014
2631475997312,40cyclictest2746861-21taskset22:37:534
2631475997233,18cyclictest0-21swapper/420:30:354
2631475997031,19cyclictest0-21swapper/421:15:434
2631475997031,18cyclictest0-21swapper/400:21:234
2631475996931,18cyclictest0-21swapper/419:32:474
2631473996951,18cyclictest0-21swapper/221:45:162
263147599668,39cyclictest2749040-21ntpq22:40:214
2631475996119,40cyclictest0-21swapper/419:57:114
2631475996021,19cyclictest0-21swapper/421:20:274
2631475996021,19cyclictest0-21swapper/421:10:314
2631475995939,20cyclictest0-21swapper/420:15:554
2631475995819,19cyclictest0-21swapper/423:15:314
263147599580,39cyclictest2707533-21ntpq21:25:204
263147599580,19cyclictest790-21in:imuxsock20:10:014
2631475995618,19cyclictest2752866-21munin-run22:50:004
2631477995517,20cyclictest79-21ksoftirqd/623:55:166
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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