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2026-08-31 - 00:34
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 rack4slot2.osadl.org (updated Sun Aug 30, 2026 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74509760,0irq/46-4a10000012-21ksoftirqd/007:06:290
54819913039,0cyclictest0-21swapper08:33:590
54819913036,0cyclictest6363-21diskstats11:54:290
54819912941,0cyclictest12145-21/usr/sbin/munin07:25:080
54819912940,0cyclictest2311-21runrttasks11:42:310
54819912940,0cyclictest0-21swapper07:09:460
54819912842,0cyclictest0-21swapper07:59:560
54819912838,0cyclictest10341-21ntp_states07:20:110
54819912742,0cyclictest0-21swapper09:58:560
54819912741,0cyclictest0-21swapper11:29:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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