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2026-08-24 - 03:00
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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 rack3slot6.osadl.org (updated Mon Aug 24, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20659911478,26cyclictest14-21ksoftirqd/021:55:130
20659911478,26cyclictest14-21ksoftirqd/021:55:130
20659911180,19cyclictest14-21ksoftirqd/022:25:120
20659911176,23cyclictest14-21ksoftirqd/022:40:130
20659910977,20cyclictest14-21ksoftirqd/021:00:220
20659910572,20cyclictest14-21ksoftirqd/022:35:140
20659910478,16cyclictest14-21ksoftirqd/023:10:110
20659910473,20cyclictest14-21ksoftirqd/020:40:140
20659910372,20cyclictest14-21ksoftirqd/020:45:140
20659910271,20cyclictest14-21ksoftirqd/000:35:150
20659910068,19cyclictest0-21swapper/019:55:150
2065999867,18cyclictest14-21ksoftirqd/023:40:110
2065999769,19cyclictest14-21ksoftirqd/022:05:140
2065999762,21cyclictest14-21ksoftirqd/022:45:140
2065999711,71cyclictest0-21swapper/020:30:150
170192970,5chrt16263-21/usr/sbin/munin00:20:321
206599968,73cyclictest13263-21apt-get21:10:150
2065999663,19cyclictest14-21ksoftirqd/022:10:150
2065999566,16cyclictest14-21ksoftirqd/021:50:140
206599953,67cyclictest9014-21cron00:00:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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