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2026-07-07 - 12:16
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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 rack3slot6.osadl.org (updated Tue Jul 07, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174589911363,27cyclictest26-21ksoftirqd/119:55:131
174589910958,30cyclictest26-21ksoftirqd/100:15:231
174589910958,30cyclictest26-21ksoftirqd/100:15:231
1604721017,77sleep016062-21/usr/sbin/munin19:05:140
17458999954,24cyclictest26-21ksoftirqd/120:25:131
17458999756,21cyclictest26-21ksoftirqd/122:10:111
17456999573,10cyclictest14-21ksoftirqd/023:20:130
17456999464,18cyclictest14-21ksoftirqd/022:50:130
17456999268,12cyclictest14-21ksoftirqd/022:00:110
17456999266,14cyclictest14-21ksoftirqd/023:50:120
17456999170,11cyclictest14-21ksoftirqd/019:35:120
17456999069,11cyclictest14-21ksoftirqd/020:00:120
17456999068,12cyclictest14-21ksoftirqd/019:20:150
17458998947,22cyclictest26-21ksoftirqd/119:50:131
17456998857,17cyclictest14-21ksoftirqd/023:05:140
17456998761,15cyclictest14-21ksoftirqd/020:25:150
1690928746,30sleep10-21swapper/119:06:061
17456998658,16cyclictest14-21ksoftirqd/020:35:130
17456998657,18cyclictest14-21ksoftirqd/022:15:120
17456998657,17cyclictest14-21ksoftirqd/019:50:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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