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2026-08-14 - 16:25
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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 rack1slot8.osadl.org (updated Fri Aug 14, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
248199919241875,42cyclictest0-21swapper/007:10:190
2482099872805,41cyclictest0-21swapper/108:45:201
23133274025,707sleep00-21swapper/007:05:070
2481999732682,40cyclictest27649-21netstat08:45:200
243512602581,14sleep10-21swapper/107:05:441
2482099404330,59cyclictest25625-21strings07:10:201
2286991280,4rtkit-daemon2285-21rtkit-daemon10:29:560
2286991070,4rtkit-daemon2285-21rtkit-daemon12:19:441
2286991070,4rtkit-daemon2285-21rtkit-daemon11:37:331
2286991060,4rtkit-daemon2285-21rtkit-daemon08:40:251
248209910514,55cyclictest0-21swapper/108:14:001
2286991050,4rtkit-daemon2285-21rtkit-daemon08:52:411
2286991020,4rtkit-daemon2285-21rtkit-daemon10:36:111
2286991020,4rtkit-daemon2285-21rtkit-daemon07:21:441
2286991010,29rtkit-daemon2285-21rtkit-daemon09:50:000
228699990,4rtkit-daemon2285-21rtkit-daemon12:25:591
24820999218,33cyclictest0-21swapper/108:00:001
228699890,24rtkit-daemon1189-21snmpd08:24:251
228699880,4rtkit-daemon2285-21rtkit-daemon11:29:370
228699850,4rtkit-daemon2285-21rtkit-daemon12:33:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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