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2026-04-23 - 01:57
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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 Thu Apr 23, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
73502010,0irq/45-4a10000030972-21kworker/0:019:02:010
7450930,0irq/46-4a10000015848-21cron21:20:130
266528911,0sleep04211-1kworker/u3:219:06:090
7450850,0irq/46-4a10000027182-21switchtime23:26:110
7450850,0irq/46-4a10000026918-21ntpq21:51:000
7450850,0irq/46-4a1000002344-21/usr/sbin/munin20:40:220
7450840,0irq/46-4a100000460-21snmpd21:26:170
7450840,0irq/46-4a10000018231-21sed19:50:520
7450830,0irq/46-4a1000005138-21sshd20:46:270
7450830,0irq/46-4a10000022430-1kworker/u3:023:20:130
7450830,0irq/46-4a10000016716-21ntpq00:31:010
7450830,0irq/46-4a10000011881-21awk21:06:120
196062838,0sleep019609-21df23:05:300
7450820,0irq/46-4a1000009624-21basename19:25:470
7450820,0irq/46-4a1000005927-1kworker/u3:120:55:140
7450820,0irq/46-4a1000004639-21/usr/sbin/munin22:20:550
7450820,0irq/46-4a10000030830-1kworker/u3:220:30:240
7450820,0irq/46-4a10000030830-1kworker/u3:220:29:440
7450820,0irq/46-4a10000027774-1kworker/u3:023:36:120
7450820,0irq/46-4a10000016001-21aten_r4power_cu22:55:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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