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2026-08-11 - 08:09
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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 Aug 11, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17221210521,38sleep00-21swapper/019:08:050
1583229414,34sleep10-21swapper/119:05:081
1758599769,58cyclictest0-21swapper/122:45:171
17581997649,19cyclictest26079-21apt-get22:35:100
17581997640,30cyclictest14-21ksoftirqd/021:07:450
17581997335,31cyclictest14-21ksoftirqd/021:15:140
17581997235,30cyclictest14-21ksoftirqd/023:55:160
17581997228,38cyclictest14-21ksoftirqd/020:06:090
52992710,7sleep00-21swapper/000:40:010
17585997129,37cyclictest26-21ksoftirqd/121:05:351
17581997139,26cyclictest13673-21ntp_states23:30:300
17581997038,27cyclictest9632-21telnet23:20:190
17581997033,31cyclictest14-21ksoftirqd/021:00:370
17585996930,8cyclictest26-21ksoftirqd/100:40:011
254982680,7sleep1251rcuc/119:30:201
17581996834,27cyclictest14-21ksoftirqd/020:10:340
17585996733,9cyclictest26-21ksoftirqd/122:00:011
17585996733,28cyclictest26-21ksoftirqd/100:00:041
1758199678,52cyclictest0-21swapper/023:40:130
1758199677,18cyclictest0-21swapper/020:00:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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