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2026-08-04 - 00:07
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Mon Aug 03, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5338992320,2cyclictest3981-21H222:10:210
533999220,21cyclictest843-21systemd-network08:59:081
5338992217,5cyclictest0-21swapper/010:10:010
534099210,18cyclictest0-21swapper/207:32:062
534099200,16cyclictest3983-21H222:10:212
533899203,11cyclictest23837-21munin-run08:40:000
5338992016,3cyclictest0-21swapper/009:29:210
533899200,19cyclictest426-21systemd-udevd08:48:520
534099192,2cyclictest32339-21chrt11:43:252
534099192,16cyclictest3989-21H222:10:212
5340991915,3cyclictest18312-21expr12:15:142
534099190,17cyclictest0-21swapper/209:29:542
534099190,16cyclictest4035-21H222:10:212
534099190,16cyclictest3989-21H222:10:212
534099190,16cyclictest3987-21H222:10:212
533999192,2cyclictest20811-21latency_hist08:35:001
533999192,1cyclictest0-21swapper/112:25:181
5339991917,1cyclictest21-21ksoftirqd/111:31:531
5339991916,2cyclictest0-21swapper/110:10:191
5339991914,2cyclictest3989-21H222:10:211
533999190,2cyclictest4099-21H222:10:211
533999190,2cyclictest3991-21H222:10:211
533999190,17cyclictest3030-21gmain09:45:161
533999190,16cyclictest3989-21H222:10:211
533999190,16cyclictest3985-21H222:10:211
533999190,16cyclictest3985-21H222:10:211
533999190,16cyclictest3983-21H222:10:211
533999190,16cyclictest3979-21H222:10:211
533999190,16cyclictest3979-21H222:10:211
5338991916,2cyclictest426-21systemd-udevd09:10:510
533899190,17cyclictest3989-21H222:10:210
533899190,16cyclictest4035-21H222:10:210
533899190,16cyclictest3981-21H222:10:210
533899190,16cyclictest3981-21H222:10:210
534099187,10cyclictest0-21swapper/210:45:152
534099182,15cyclictest3987-21H222:10:212
534099182,15cyclictest10189-21chrt10:05:312
5340991815,2cyclictest26910-21sendmail_mailqu07:45:222
5340991815,2cyclictest10943-21ntpq09:10:192
5340991815,2cyclictest10453-21nfsd412:00:182
5340991814,3cyclictest4035-21H222:10:212
5340991814,3cyclictest3981-21H222:10:212
5340991814,3cyclictest3979-21H222:10:212
5340991814,3cyclictest12261-21perf08:20:012
534099181,2cyclictest3979-21H222:10:212
534099181,16cyclictest3991-21H222:10:212
534099181,16cyclictest3983-21H222:10:212
534099181,15cyclictest3991-21H222:10:212
534099180,3cyclictest3991-21H222:10:212
534099180,2cyclictest3981-21H222:10:212
534099180,1cyclictest3991-21H222:10:212
534099180,17cyclictest3991-21H222:10:212
534099180,17cyclictest3979-21H222:10:212
534099180,16cyclictest4035-21H222:10:212
533999182,2cyclictest3983-21H222:10:211
533999182,15cyclictest3979-21H222:10:211
533999182,15cyclictest19587-21grep10:25:131
5339991816,1cyclictest21-21ksoftirqd/112:35:211
5339991816,1cyclictest21-21ksoftirqd/111:09:041
5339991816,1cyclictest21-21ksoftirqd/109:44:391
5339991816,1cyclictest21-21ksoftirqd/108:20:011
5339991815,1cyclictest0-21swapper/108:44:451
5339991814,3cyclictest16206-21perf10:20:011
5339991814,3cyclictest16206-21perf10:20:001
5339991813,3cyclictest3987-21H222:10:211
533999180,2cyclictest4035-21H222:10:211
533999180,2cyclictest3989-21H222:10:211
533999180,2cyclictest3987-21H222:10:211
533999180,1cyclictest3979-21H222:10:211
533999180,16cyclictest3983-21H222:10:211
533999180,16cyclictest3981-21H222:10:211
533999180,15cyclictest4035-21H222:10:211
533999180,15cyclictest4035-21H222:10:211
533999180,15cyclictest3989-21H222:10:211
533899182,15cyclictest9-21ksoftirqd/011:33:230
5338991816,1cyclictest9-21ksoftirqd/011:07:510
5338991815,2cyclictest19086-21nfsd412:15:200
5338991813,2cyclictest28975-21nfsd410:40:170
533899181,2cyclictest24558-21nfsd412:25:170
533899181,1cyclictest0-21swapper/011:47:530
533899180,2cyclictest3991-21H222:10:210
533899180,2cyclictest3976-21H222:10:210
533899180,17cyclictest3983-21H222:10:210
533899180,17cyclictest3979-21H222:10:210
533899180,16cyclictest3981-21H222:10:210
533899180,16cyclictest3976-21H222:10:210
533899180,16cyclictest24371-21https08:40:010
533899180,15cyclictest3989-21H222:10:210
533899180,15cyclictest3983-21H222:10:210
5340991715,1cyclictest3981-21H222:10:212
5340991715,1cyclictest28-21ksoftirqd/210:20:162
5340991715,1cyclictest0-21swapper/210:00:032
5340991714,2cyclictest3976-21H222:10:212
5340991714,2cyclictest15599-21expr09:20:122
5340991714,2cyclictest1204-21fschecks_time11:45:162
5340991713,3cyclictest0-21swapper/209:45:122
534099171,2cyclictest4099-21H222:10:212
534099171,15cyclictest29937-21missed_timers12:35:172
534099170,3cyclictest3983-21H222:10:212
534099170,2cyclictest3989-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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