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2026-05-19 - 03:40
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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 Tue May 19, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2024222012,169sleep12031-21apt-get18:56:031
35029912232,60cyclictest0-21swapper/022:16:230
35029912232,60cyclictest0-21swapper/022:16:230
3502991214,82cyclictest352-21runrttasks23:47:280
3502991202,88cyclictest26320-21runrttasks21:26:150
3502991172,78cyclictest16044-21grep19:36:270
3502991163,82cyclictest23679-21apt-config23:10:560
3502991127,61cyclictest0-21swapper/023:16:070
3502991104,69cyclictest0-21swapper/022:00:530
3502991103,70cyclictest2731-21idleruntime21:41:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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