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2026-06-13 - 15:13
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Sat Jun 13, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40938599911861,38cyclictest12771-21sshd22:34:294
4093857999595,0cyclictest0-21swapper/219:25:122
4093861997414,20cyclictest0-21swapper/600:25:156
4093859997213,40cyclictest4231-21taskset22:18:164
4093859997133,19cyclictest4190565-21cstates22:05:124
4093859997113,39cyclictest4109405-21ntpq19:35:204
4093859997111,21cyclictest792-21rs:main4
4093859996910,59cyclictest3443057-21systemd-journal23:58:284
4093859996910,19cyclictest0-21swapper/422:37:184
4093859996910,19cyclictest0-21swapper/422:37:184
4093859996830,38cyclictest601ktimers/422:12:124
4093859996830,19cyclictest1774324-21munin-node21:30:484
4093859996829,19cyclictest0-21swapper/423:04:284
4093859996729,38cyclictest0-21swapper/423:49:244
409385999657,39cyclictest4160211-21awk21:10:134
409385999656,1cyclictest0-21swapper/420:00:224
4093855996527,38cyclictest0-21swapper/000:30:150
4093859996425,39cyclictest0-21swapper/423:16:244
4093859996324,39cyclictest0-21swapper/400:13:284
409385999624,0cyclictest0-21swapper/421:09:264
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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