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2026-03-29 - 01:46
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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 rack8slot4.osadl.org (updated Sat Mar 28, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10065402219161,21sleep10-21swapper/107:07:221
10065462218165,17sleep70-21swapper/707:07:287
10064392218188,19sleep30-21swapper/307:05:563
10065352217163,43sleep50-21swapper/507:07:175
10064652214185,18sleep00-21swapper/007:06:170
10086132211183,18sleep20-21swapper/207:09:162
10065162211183,18sleep60-21swapper/607:07:026
10086242210183,17sleep40-21swapper/407:09:264
100891099320,31cyclictest1083031-21dump-pmu-power09:25:013
100890499322,29cyclictest1-21systemd07:15:021
100891399310,30cyclictest1157038-21turbostat.cron11:40:024
1008904993127,3cyclictest1132538-21turbostat.cron10:55:001
1008923993028,1cyclictest1094687-21apt-get09:48:027
1008923993027,2cyclictest1102119-21sh10:00:017
100892399300,29cyclictest369-21systemd-journal10:40:017
100891799300,29cyclictest1080322-21dump-pmu-power09:20:015
1008910993028,1cyclictest698-21in:imuxsock07:15:023
1008910993026,3cyclictest369-21systemd-journal07:25:023
1008910993023,4cyclictest1-21systemd07:20:013
100891099300,29cyclictest0-21swapper/309:32:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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