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2026-04-16 - 22:48
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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 Thu Apr 16, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2244083999797,0cyclictest2336891-21users09:55:227
2244083999190,1cyclictest861rcuc/710:55:237
2244083999133,38cyclictest0-21swapper/711:06:337
2244079999153,19cyclictest0-21swapper/309:05:173
2244083998932,38cyclictest2265996-21awk07:50:027
2244083998830,39cyclictest1086-21runrttasks12:25:357
224408399865,80cyclictest2354059-21munin-run10:30:007
224408399801,60cyclictest2329980-21expr09:45:137
2244083997658,18cyclictest871-21mta-sts-daemon08:51:257
2244083997336,18cyclictest871ktimers/709:54:547
2244083997254,18cyclictest873-21mta-sts-daemon12:33:247
2244083997234,38cyclictest85550irq/34-eno1-TxRx-008:30:227
2244083997233,39cyclictest871ktimers/709:29:107
2244083997233,19cyclictest0-21swapper/710:45:327
2244083997133,38cyclictest0-21swapper/707:56:417
2244083996930,39cyclictest0-21swapper/709:32:407
2244083996910,39cyclictest0-21swapper/710:11:297
2244083996832,18cyclictest85550irq/34-eno1-TxRx-011:10:207
2244083996829,39cyclictest0-21swapper/709:17:427
2244083996728,39cyclictest0-21swapper/712:12:347
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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