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2026-04-29 - 11:36
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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 20 highest latencies:
System rack4slot2.osadl.org (updated Wed Apr 29, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745013020,0irq/46-4a10000016738-1kworker/u3:019:02:320
7450860,0irq/46-4a10000030700-1kworker/u3:100:28:500
18408998360,0cyclictest0-21swapper21:55:080
18408998356,0cyclictest0-21swapper00:20:090
7450820,0irq/46-4a10000018575-1kworker/u3:123:49:060
7450810,0irq/46-4a10000020301-1kworker/u3:223:52:410
7350810,0irq/45-4a100000460-21snmpd22:19:210
18408997855,0cyclictest0-21swapper22:45:130
18408997854,0cyclictest0-21swapper22:20:220
7350770,0irq/45-4a100000169172chrt23:41:400
7350750,0irq/45-4a100000291462sleep000:18:440
18408997348,0cyclictest0-21swapper23:35:100
7450720,0irq/46-4a1000007390-21/usr/sbin/munin21:40:120
7450720,0irq/46-4a1000003646-21kworker/u2:121:30:330
7450720,0irq/46-4a10000013727-1kworker/u3:120:30:010
7350720,0irq/45-4a1000000-21swapper22:14:190
18408997152,0cyclictest593-21df22:55:150
18408997146,0cyclictest0-21swapper23:10:080
7450700,0irq/46-4a10000023023-21fschecks_time00:00:270
7450700,0irq/46-4a10000013727-1kworker/u3:120:40:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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