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2026-01-05 - 08:22
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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 Mon Jan 05, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
198899911255,48cyclictest23235-21ssh21:55:060
198899911053,51cyclictest374-21sshd20:05:010
19889991102,28cyclictest11708-21ssh22:28:450
19889991102,26cyclictest23496-21runrttasks20:58:360
19889991093,26cyclictest23617-21ssh00:30:350
19889991086,10cyclictest0-21swapper/019:09:500
19889991073,23cyclictest21417-21ssh22:44:430
19889991072,25cyclictest9382-21ssh23:15:330
19889991072,25cyclictest7814-21ssh22:21:410
198899910650,49cyclictest4366-21ntp_kernel_err00:00:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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