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2025-12-30 - 07:24
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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 rackeslot5.osadl.org (updated Tue Dec 30, 2025 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227899330,32cyclictest307-21systemd-journal20:55:002
2282993028,1cyclictest9568-21cut00:00:013
2282993027,2cyclictest11588-21sh19:30:003
228299300,29cyclictest16487-21cron00:15:003
2274993028,1cyclictest307-21systemd-journal20:35:011
2274993027,2cyclictest18582-21sh19:45:021
227499300,1cyclictest0-21swapper/122:25:011
2282992927,1cyclictest0-21swapper/322:45:003
228299290,28cyclictest0-21swapper/321:35:013
2278992927,1cyclictest11842-21awk00:05:012
227899290,28cyclictest0-21swapper/223:35:012
227899290,1cyclictest6213-21cron22:45:002
227899290,1cyclictest26687-21cron21:10:002
226899290,28cyclictest0-21swapper/020:00:120
2282992828,0cyclictest0-21swapper/323:50:133
228299280,27cyclictest0-21swapper/320:10:143
228299280,27cyclictest0-21swapper/300:15:143
228299280,1cyclictest0-21swapper/322:35:023
228299280,0cyclictest0-21swapper/300:05:133
2278992828,0cyclictest20245-21apt-get22:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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