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2026-06-03 - 21:56
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 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 rackbslot7.osadl.org (updated Wed Jun 03, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
126639912758,60cyclictest0-21swapper/011:54:530
126639912758,60cyclictest0-21swapper/011:54:530
12519211714,67sleep112554-21munin-run06:59:511
12663991123,29cyclictest12537-21latency_hist06:59:540
126639911145,61cyclictest0-21swapper/010:05:120
126639911038,10cyclictest26507-21ntp_kernel_pll_09:10:180
12663991094,27cyclictest15053-21find09:45:240
126639910829,7cyclictest0-21swapper/009:50:150
12663991063,29cyclictest8326-21taskset12:16:330
126809910552,46cyclictest544-21cron11:39:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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