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2026-05-06 - 21:28
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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
Characteristics of the 10 highest latencies:
System rackcslot4.osadl.org (updated Wed May 06, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36899012258186,56sleep10-21swapper/107:07:541
36897422257186,27sleep00-21swapper/007:06:130
37450532600,4sleep00-21swapper/009:17:100
369022399592,37cyclictest3780816-21apt-get10:05:130
369022399582,37cyclictest3892401-21apt-get12:35:130
36958102560,1chrt3695809-21/usr/sbin/munin07:20:221
179699560,4rtkit-daemon1795-21rtkit-daemon12:28:340
179699550,4rtkit-daemon1795-21rtkit-daemon11:20:410
369022399532,33cyclictest3873874-21apt-get12:10:130
179699530,4rtkit-daemon1795-21rtkit-daemon09:37:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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