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2026-04-23 - 19:21
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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 Thu Apr 23, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23403217115,117sleep023458-21fschecks_count06:58:010
23791212312,81sleep223825-21proc_pri06:58:162
247289910957,47cyclictest24697-21cyclictest08:17:522
247289910957,47cyclictest24697-21cyclictest08:17:522
247289910243,12cyclictest0-21swapper/208:42:382
24728991023,43cyclictest30235-21latency_hist08:57:392
24708991014,75cyclictest21843-21apt-get10:32:510
24708991014,75cyclictest21843-21apt-get10:32:510
247289910037,12cyclictest0-21swapper/207:27:522
2472899976,31cyclictest21843-21apt-get10:33:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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