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2026-07-24 - 22:26
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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 Fri Jul 24, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5952214310,94sleep06035-21unixbench_singl06:52:100
65499911933,53cyclictest15350irq/295-2188000.ethernet09:21:370
65499911933,53cyclictest15350irq/295-2188000.ethernet09:21:370
6549991183,91cyclictest29724-21apt-get10:16:410
6549991172,27cyclictest9002-21apt-get07:01:500
6549991153,27cyclictest26191-21ssh10:09:520
6549991148,24cyclictest12969-21sh11:35:390
6549991143,27cyclictest1030-21apt-get10:21:320
6549991143,27cyclictest1030-21apt-get10:21:320
6549991143,27cyclictest1030-21apt-get10:21:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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