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2026-04-01 - 19:14
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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 Wed Apr 01, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220392940,6chrt22037-21grep07:15:361
1835228917,26sleep00-21swapper/007:08:300
1832028024,45sleep10-21swapper/107:08:111
1867599769,60cyclictest0-21swapper/010:30:130
18675997538,32cyclictest14-21ksoftirqd/009:10:210
18675997436,22cyclictest14-21ksoftirqd/010:00:130
18675997327,30cyclictest14-21ksoftirqd/009:55:310
18675997326,41cyclictest14-21ksoftirqd/010:13:500
18675997234,23cyclictest14-21ksoftirqd/011:35:210
18675997214,17cyclictest0-21swapper/009:15:130
18675997135,21cyclictest14-21ksoftirqd/009:43:540
18675997134,9cyclictest14-21ksoftirqd/009:05:170
18675997133,23cyclictest14-21ksoftirqd/012:15:350
1867599705,35cyclictest0-21swapper/007:15:180
18675997033,23cyclictest14-21ksoftirqd/010:55:380
1867599687,53cyclictest22121-21apt-get11:50:120
18675996832,21cyclictest14-21ksoftirqd/011:00:150
18675996832,21cyclictest14-21ksoftirqd/009:34:410
18675996819,33cyclictest14-21ksoftirqd/012:05:300
18680996723,39cyclictest26-21ksoftirqd/110:30:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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