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2026-09-23 - 23:58
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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 20 highest latencies:
System rackeslot2.osadl.org (updated Wed Sep 23, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319965821210,1sleep20-21swapper/211:04:162
32822522900,2sleep30-21swapper/311:49:233
30948172390,3sleep30-21swapper/310:04:163
31211172340,2sleep30-21swapper/310:19:193
30044182320,3sleep30-21swapper/309:14:163
33448992260,1sleep00-21swapper/012:24:230
283226599258,7cyclictest0-21swapper/010:48:570
2832265992512,5cyclictest3076485-21kthreadcore09:54:180
283226699247,6cyclictest2940088-21cut08:29:161
283226599248,6cyclictest0-21swapper/011:18:540
2832265992413,7cyclictest778-21dbus-daemon12:05:010
2832265992410,7cyclictest3009318-21/usr/sbin/munin09:15:000
29384072230,2sleep20-21swapper/208:25:022
283226699234,7cyclictest2904461-21apt-get08:03:561
283226599239,5cyclictest3347489-21/usr/sbin/munin12:29:240
2832265992313,6cyclictest3092453-21kthreadcore10:04:140
2832265992210,2cyclictest3257374-21ssh11:35:040
2832266992115,2cyclictest82050irq/121-eno112:29:221
283226599218,5cyclictest3132316-21/usr/sbin/munin10:24:210
283226599216,14cyclictest3041256-21kthreadcore09:34:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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