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2025-11-24 - 08:38
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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 Mon Nov 24, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1479699904832,49cyclictest0-21swapper/119:10:021
1479599879809,53cyclictest0-21swapper/019:10:020
146282643620,16sleep00-21swapper/019:08:400
145642603580,14sleep10-21swapper/119:08:021
1479699355290,29cyclictest0-21swapper/119:25:221
14795991193,6cyclictest26187-21ssh23:57:580
1479599994,89cyclictest0-21swapper/000:14:590
327042790,2sleep1251rcuc/100:10:011
17072790,5sleep11706-21ssh22:19:371
1479699775,17cyclictest0-21swapper/121:35:061
1479699775,17cyclictest0-21swapper/121:19:051
1479699766,15cyclictest0-21swapper/121:28:021
1479699764,11cyclictest21907-21sh22:55:001
1479599764,55cyclictest0-21swapper/021:55:000
1479699756,62cyclictest0-21swapper/123:18:101
1479699756,17cyclictest0-21swapper/123:52:221
14796997512,8cyclictest31595-21munin-node19:55:181
1479599754,55cyclictest0-21swapper/021:15:590
313882740,2sleep0221rcuc/022:15:020
1479699746,19cyclictest0-21swapper/122:25:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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