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2026-05-03 - 15:40
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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 Sun May 03, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310669911967,33cyclictest1750-21ssh11:36:532
310649911470,37cyclictest2374-21systemd-journal07:11:551
310589911150,53cyclictest0-21swapper/010:17:000
310589911150,53cyclictest0-21swapper/010:17:000
3062721096,16sleep00-21swapper/006:58:230
310649910857,44cyclictest5508-21diskmemload12:17:211
310589910529,57cyclictest0-21swapper/012:02:100
310589910529,57cyclictest0-21swapper/012:02:100
929121040,6sleep09260-21ssh09:07:210
929121040,6sleep09260-21ssh09:07:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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