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2025-11-02 - 18:51
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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 Nov 02, 2025 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15028991123,30cyclictest7393-21apt-get08:24:120
150289911223,25cyclictest0-21swapper/009:23:480
15028991107,93cyclictest9742-21apt-get08:29:150
150289911036,11cyclictest0-21swapper/007:34:010
150289911036,11cyclictest0-21swapper/007:34:010
150289911034,8cyclictest0-21swapper/011:48:170
150289911034,8cyclictest0-21swapper/011:48:170
150289911023,13cyclictest0-21swapper/007:44:330
15028991094,31cyclictest14368-21latency_hist08:44:000
15028991093,48cyclictest26642-21proc_pri11:14:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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