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2026-03-10 - 11:53
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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 Tue Mar 10, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745011060,0irq/46-4a1000003825-1kworker/u3:219:04:120
25838210811,0sleep025861-21ntp_kernel_err21:37:420
326522978,0sleep032650-21meminfo20:22:410
7450960,0irq/46-4a1000004537-21cron20:36:540
7450960,0irq/46-4a10000024469-21timerwakeupswit23:07:530
7450960,0irq/46-4a10000014588-21runrttasks21:05:080
7450950,0irq/46-4a1000007243-21mailstats23:52:460
7450940,0irq/46-4a1000005743-21grep22:12:520
7450940,0irq/46-4a10000028488-21cron23:21:540
7450940,0irq/46-4a10000022693-21/usr/sbin/munin19:52:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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