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2026-04-25 - 11:02
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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 Sat Apr 25, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745011400,0irq/46-4a10000029479-1kworker/u3:119:04:100
129082920,0sleep011108-1kworker/u3:100:28:530
7450900,0irq/46-4a10000013806-21meminfo00:30:490
7350880,0irq/45-4a10000016914-21/usr/sbin/munin23:05:300
228942880,0chrt21274-1kworker/u3:021:46:520
7350870,0irq/45-4a1000004536-21sendmail20:55:090
7350870,0irq/45-4a10000020015-21aten_r4power_cu20:05:180
31275998756,0cyclictest0-21swapper22:45:500
7450860,0irq/46-4a1000004965-21sshd20:55:310
7450860,0irq/46-4a10000030116-21cron20:35:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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