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2026-03-22 - 04:29
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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 Sun Mar 22, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1202929813,37sleep00-21swapper/019:06:430
1201829232,49sleep10-21swapper/119:06:371
12527998448,24cyclictest701-21apt-get00:35:241
12522998335,42cyclictest2890-21irqstats23:10:230
1252299816,64cyclictest25998-21apt-get19:45:120
12527997946,18cyclictest4164-21apt-get23:15:131
246722780,7sleep023820-21diskmemload21:10:280
12527997840,28cyclictest6138-21apt-get20:20:131
1252299782,69cyclictest548-21runrttasks22:15:090
1252299778,59cyclictest846-21apt-get20:05:150
12522997710,55cyclictest0-21swapper/021:30:230
12527997646,18cyclictest31569-21apt-get21:30:231
12527997638,28cyclictest7668-21apt-get23:25:131
12527997633,27cyclictest0-21swapper/121:25:131
1252299767,57cyclictest16743-21apt-get23:50:140
1252299763,66cyclictest9417-21taskset23:30:160
12522997628,42cyclictest21021-21ntp_states00:00:300
12522997610,55cyclictest0-21swapper/023:15:120
12527997549,15cyclictest16951-21apt-get20:50:241
12527997541,23cyclictest27617-21apt-get00:20:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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