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2026-05-31 - 21:07
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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 Sun May 31, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
200109912163,52cyclictest11675-21latency_hist11:15:060
200109912163,52cyclictest11675-21latency_hist11:15:060
20010991183,84cyclictest0-21swapper/010:10:480
20010991164,78cyclictest19676-21snmpd11:40:100
20010991164,78cyclictest19676-21snmpd11:40:100
20010991162,77cyclictest24403-21apt-get08:50:130
20010991162,77cyclictest24403-21apt-get08:50:130
200109911541,54cyclictest28661-21ssh09:55:080
200109911361,46cyclictest1-21systemd08:25:030
200109911329,49cyclictest0-21swapper/011:25:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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