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2026-04-01 - 22:31
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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 Wed Apr 01, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70271399960,17cyclictest0-21swapper/610:20:196
702714995011,39cyclictest0-21swapper/709:40:167
70271199486,40cyclictest870660-21apt-get12:15:124
702705994810,19cyclictest0-21swapper/009:10:160
70271199478,19cyclictest0-21swapper/410:14:104
70271199477,39cyclictest0-21swapper/409:45:164
70271199477,39cyclictest0-21swapper/409:34:144
70271199477,39cyclictest0-21swapper/408:32:184
70271199477,39cyclictest0-21swapper/408:03:424
70271199477,19cyclictest0-21swapper/411:25:024
702711994728,18cyclictest601ktimers/411:18:064
702711994727,19cyclictest0-21swapper/409:06:544
70271199468,0cyclictest601ktimers/410:55:264
70271199468,0cyclictest601ktimers/410:55:264
70271199467,39cyclictest0-21swapper/411:06:104
70271199467,39cyclictest0-21swapper/410:32:184
70271199467,39cyclictest0-21swapper/409:23:344
70271199467,39cyclictest0-21swapper/408:24:384
70271199467,39cyclictest0-21swapper/408:12:304
70271199467,39cyclictest0-21swapper/407:36:384
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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