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2026-07-21 - 19:46
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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 Jul 21, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2647021187,15sleep00-21swapper/006:54:300
269349911036,11cyclictest0-21swapper/211:41:222
2646221056,17sleep20-21swapper/206:54:242
269349910236,16cyclictest27330-21cut12:21:552
269349910236,16cyclictest27330-21cut12:21:552
269349910142,8cyclictest0-21swapper/209:12:102
269349910142,8cyclictest0-21swapper/209:12:102
269349910126,12cyclictest0-21swapper/208:56:562
269349910041,51cyclictest0-21swapper/208:32:042
26934999937,14cyclictest31823-21/usr/sbin/munin09:47:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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