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2026-07-17 - 08:10
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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 Fri Jul 17, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2272499310,0cyclictest0-21swapper/123:05:141
22718993027,2cyclictest14550-21snapd21:45:280
22724992724,2cyclictest31808-21python321:20:001
2272499242,20cyclictest16833-21grep19:55:121
2272999230,22cyclictest0-21swapper/222:24:432
2272999230,22cyclictest0-21swapper/221:33:482
2272999230,18cyclictest16089-21nfsd400:35:182
2272999214,16cyclictest0-21swapper/220:38:382
22718992119,1cyclictest20057-21kworker/0:021:20:010
22729992018,1cyclictest0-21swapper/222:03:352
22729992017,2cyclictest30625-21plymouth22:10:212
22729992016,3cyclictest3339-21ls20:30:012
22729992016,3cyclictest3339-21ls20:30:002
22729992014,5cyclictest0-21swapper/222:05:152
22729992014,3cyclictest0-21swapper/200:30:222
22729992013,6cyclictest843-21systemd-network00:14:152
2272499204,15cyclictest0-21swapper/120:47:511
2271899202,15cyclictest0-21swapper/023:40:180
2272999192,16cyclictest0-21swapper/220:22:282
22729991917,1cyclictest0-21swapper/219:35:132
22729991915,3cyclictest0-21swapper/220:40:182
22729991915,2cyclictest21211-21nfsd422:50:202
22729991914,3cyclictest14106-21tr19:50:132
2272999191,3cyclictest0-21swapper/220:55:202
2272999190,4cyclictest20777-21nvmesmart_nvme020:00:202
2272999190,17cyclictest2631-21python321:25:012
2272499193,15cyclictest0-21swapper/123:21:351
2272499193,15cyclictest0-21swapper/119:26:211
22724991916,2cyclictest903-21lxcfs00:07:521
22724991916,2cyclictest0-21swapper/119:23:561
2272499190,1cyclictest0-21swapper/121:28:591
2271899193,15cyclictest23613-21wc21:05:020
2271899193,15cyclictest0-21swapper/023:32:400
2271899192,15cyclictest0-21swapper/019:45:000
22718991917,1cyclictest0-21swapper/023:25:110
22718991915,3cyclictest0-21swapper/021:25:180
22729991816,1cyclictest4788-21missed_timers21:25:172
22729991816,1cyclictest0-21swapper/219:30:182
22729991815,2cyclictest13795-21nfsd421:40:182
22729991815,2cyclictest13795-21nfsd421:40:172
22729991813,3cyclictest0-21swapper/219:41:042
2272999180,3cyclictest29390-21nfsd423:05:182
2272999180,16cyclictest3058-21rs:main2
2272999180,16cyclictest21460-21smtp23:50:032
2272499182,2cyclictest26207-21grep20:10:171
2272499182,15cyclictest0-21swapper/123:15:211
2272499180,17cyclictest24399-21grep23:55:131
2272499180,16cyclictest7938-21munin-run19:40:001
2271899182,15cyclictest31338-21switchtime00:05:260
2271899182,11cyclictest7608-21perf19:40:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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