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2026-04-28 - 07:18
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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 Tue Apr 28, 2026 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1426693997332,20cyclictest0-21swapper/321:00:543
1426693997312,39cyclictest1498538-21systemctl21:20:013
1426693997113,39cyclictest1442715-21cat19:35:233
1426693996910,39cyclictest1485767-21hddtemp_smartct20:55:153
1426693996827,20cyclictest0-21swapper/323:54:173
1426693996727,19cyclictest0-21swapper/319:20:373
1426693996726,20cyclictest0-21swapper/323:23:493
1426693996424,19cyclictest0-21swapper/323:46:133
1426693996424,19cyclictest0-21swapper/300:20:323
1426693996324,19cyclictest0-21swapper/300:18:283
1426693996122,19cyclictest0-21swapper/319:28:223
1426694996041,19cyclictest0-21swapper/423:25:174
1426693995817,39cyclictest1588788-21awk00:05:003
1426693995614,40cyclictest0-21swapper/319:41:593
1426690995637,19cyclictest0-21swapper/023:25:160
1426696995536,18cyclictest872-21mta-sts-daemon21:05:166
1426693995536,19cyclictest511ktimers/322:16:393
1426693995517,18cyclictest1552158-21ntpq22:55:213
1426693995514,19cyclictest0-21swapper/320:36:393
142669399550,16cyclictest1601896-21ntpq00:25:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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