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2026-05-11 - 16:22
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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
Characteristics of the 20 highest latencies:
System rack7slot1.osadl.org (updated Mon May 11, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12098211352,56sleep20-21swapper/207:06:452
12013211253,20sleep30-21swapper/307:05:453
1204728556,24sleep10-21swapper/107:06:121
1218728355,23sleep00-21swapper/007:07:510
12457994212,23cyclictest0-21swapper/008:26:140
1245799415,25cyclictest0-21swapper/009:35:010
12457994116,19cyclictest0-21swapper/012:24:380
12457994116,19cyclictest0-21swapper/012:24:370
12460994014,23cyclictest0-21swapper/309:19:453
12459994022,15cyclictest0-21swapper/210:27:092
1245799408,24cyclictest0-21swapper/010:20:420
12457994027,11cyclictest0-21swapper/010:41:440
12457994027,11cyclictest0-21swapper/010:41:440
12457994014,19cyclictest0-21swapper/008:00:280
12457994013,21cyclictest0-21swapper/008:46:430
12457994013,21cyclictest0-21swapper/008:46:430
1245999396,23cyclictest0-21swapper/211:00:112
12457993912,21cyclictest0-21swapper/009:02:410
12457993912,21cyclictest0-21swapper/008:21:140
12457993912,20cyclictest0-21swapper/009:06:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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