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2026-05-05 - 01:02
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Mon May 04, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8415992214,4cyclictest0-21swapper/110:59:381
841599220,21cyclictest843-21systemd-network12:04:351
841199220,18cyclictest0-21swapper/008:45:150
8420992114,6cyclictest0-21swapper/211:45:172
841199210,20cyclictest843-21systemd-network11:13:030
842099202,17cyclictest4099-21H222:10:212
8420991916,2cyclictest0-21swapper/209:56:432
8415991914,1cyclictest0-21swapper/110:45:371
841599190,16cyclictest3979-21H222:10:211
841199193,14cyclictest0-21swapper/011:05:510
8411991917,1cyclictest3981-21H222:10:210
8411991913,3cyclictest0-21swapper/010:31:110
841199190,1cyclictest0-21swapper/010:15:170
842099182,1cyclictest0-21swapper/211:13:162
842099182,15cyclictest0-21swapper/207:51:432
8420991813,2cyclictest3985-21H222:10:212
842099181,16cyclictest3987-21H222:10:212
842099181,16cyclictest1504-21tail08:50:152
842099180,17cyclictest0-21swapper/212:35:012
841599182,15cyclictest21-21ksoftirqd/109:56:291
8415991815,2cyclictest31114-21wc09:45:001
8415991814,3cyclictest4023-21PluginScanner10:23:131
8415991813,3cyclictest29698-21cat08:45:011
841599180,3cyclictest399-20systemd-journal08:16:341
841599180,3cyclictest27327-21sshd07:41:331
841599180,2cyclictest3985-21H222:10:211
841599180,2cyclictest3983-21H222:10:211
841599180,2cyclictest0-21swapper/111:20:011
841599180,17cyclictest4035-21H222:10:211
841599180,16cyclictest3989-21H222:10:211
841199182,15cyclictest6648-21chrt08:01:140
8411991814,3cyclictest0-21swapper/011:04:340
8411991812,5cyclictest26954-21ps09:35:210
8411991812,4cyclictest471-21nvmesmart_nvme011:40:180
841199181,16cyclictest0-21swapper/012:00:160
841199181,15cyclictest0-21swapper/010:21:250
8411991811,5cyclictest0-21swapper/010:05:480
841199180,2cyclictest4099-21H222:10:210
841199180,2cyclictest3991-21H222:10:210
841199180,2cyclictest28166-21cron11:34:590
841199180,17cyclictest843-21systemd-network11:20:170
841199180,17cyclictest843-21systemd-network07:25:180
8420991715,1cyclictest244242chrt07:36:412
8420991715,1cyclictest0-21swapper/212:00:152
8420991715,1cyclictest0-21swapper/208:10:082
8420991714,2cyclictest9058-21expr11:55:172
8420991714,2cyclictest8488-21perf09:05:002
8420991714,2cyclictest4140-21smartctl10:50:142
8420991714,2cyclictest3991-21H222:10:212
8420991714,2cyclictest3985-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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