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2026-04-27 - 06:00
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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 Mon Apr 27, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205762991920,190cyclictest0-21swapper/621:20:126
20576199118115,2cyclictest70-21ksoftirqd/520:45:115
205759996911,39cyclictest294518-21/usr/sbin/munin21:50:133
20575999635,39cyclictest354392-21tr23:40:003
205759996344,19cyclictest0-21swapper/320:55:013
205759996324,38cyclictest360886-21cstates23:50:143
205759996224,18cyclictest387225-21cat00:35:243
20575999600,19cyclictest0-21swapper/321:00:063
205759995940,19cyclictest5150ktimers/300:11:483
205759995925,15cyclictest0-21swapper/321:05:133
205759995918,19cyclictest331481-21sensors_temp22:55:213
20575999580,18cyclictest0-21swapper/320:20:423
20575999580,18cyclictest0-21swapper/320:20:413
20575799580,1cyclictest0-21swapper/123:35:181
205759995717,18cyclictest343743-21/usr/sbin/munin23:20:013
205759995716,19cyclictest278954-21/usr/sbin/munin21:20:223
205759995715,40cyclictest243120-21ntpq20:15:203
205759995714,19cyclictest307985-21munin-plugin-st22:15:013
20575999570,17cyclictest0-21swapper/323:42:333
205756995739,18cyclictest0-21swapper/022:35:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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