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2026-04-22 - 17:57
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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 Wed Apr 22, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173529913763,18cyclictest3225-21latency_hist12:02:420
173529913763,18cyclictest3225-21latency_hist12:02:420
15873210819,46sleep00-21swapper/006:57:540
17361991003,47cyclictest3482-21ssh12:02:541
1694721008,18sleep20-21swapper/206:59:322
17371999927,42cyclictest0-21swapper/212:04:062
17361999652,39cyclictest17339-21cyclictest08:18:161
1737199953,54cyclictest467-21runrttasks09:15:132
1736199952,46cyclictest8977-21ssh11:17:501
1736199952,46cyclictest8977-21ssh11:17:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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