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2026-07-31 - 03:08
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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 Jul 30, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262539912042,27cyclictest0-21swapper/009:36:110
262539912042,27cyclictest0-21swapper/009:36:110
2579221187,17sleep00-21swapper/006:51:560
2579221187,17sleep00-21swapper/006:51:560
262539910738,21cyclictest25526-21apt-get08:26:100
262709910541,55cyclictest0-21swapper/211:40:592
262539910532,31cyclictest7762-21apt-get10:51:080
262539910417,43cyclictest15352-21latency_hist08:00:590
262709910336,11cyclictest0-21swapper/211:21:272
262709910240,8cyclictest0-21swapper/208:06:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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