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2026-06-19 - 21:28
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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 Fri Jun 19, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
876399230,5cyclictest0-21swapper/112:35:011
876499220,18cyclictest0-21swapper/212:07:092
876399225,16cyclictest0-21swapper/111:26:101
8763992222,0cyclictest0-21swapper/107:30:231
8762992118,2cyclictest6345-21latency_hist09:00:010
876499203,16cyclictest3979-21H222:10:212
876499202,17cyclictest0-21swapper/211:00:182
8763992017,2cyclictest3991-21H222:10:211
876399200,18cyclictest758-21cut08:50:131
8762992011,5cyclictest0-21swapper/011:40:010
876299200,19cyclictest843-21systemd-network12:01:520
8764991917,1cyclictest0-21swapper/208:45:422
8764991916,2cyclictest20931-21expr10:20:152
8764991916,2cyclictest20931-21expr10:20:152
8764991916,2cyclictest19163-21open_inodes10:15:182
8764991915,3cyclictest3985-21H222:10:212
8764991915,3cyclictest2020-21cut09:45:172
876499191,2cyclictest3987-21H222:10:212
876499190,2cyclictest3983-21H222:10:212
876499190,2cyclictest3979-21H222:10:212
876499190,2cyclictest3979-21H222:10:212
876499190,2cyclictest3976-21H222:10:212
876499190,16cyclictest4035-21H222:10:212
876499190,16cyclictest3976-21H222:10:212
876399192,16cyclictest31070-21smtpd10:39:391
8763991917,1cyclictest3991-21H222:10:211
8763991917,1cyclictest0-21swapper/112:36:031
8763991916,2cyclictest3983-21H222:10:211
8763991916,2cyclictest3979-21H222:10:211
8763991916,2cyclictest26161-21cut12:25:001
8763991916,2cyclictest11047-21wc10:00:221
8763991912,6cyclictest0-21swapper/110:59:231
876399190,2cyclictest3991-21H222:10:211
876399190,2cyclictest3989-21H222:10:211
876399190,17cyclictest2128-21cut09:45:171
876299192,3cyclictest0-21swapper/010:20:160
876299192,3cyclictest0-21swapper/010:20:150
8762991918,1cyclictest9-21ksoftirqd/007:59:220
8762991916,2cyclictest4171-21expr09:50:130
8762991916,2cyclictest3983-21H222:10:210
8762991914,4cyclictest870-21systemd-logind07:43:520
876299190,16cyclictest3991-21H222:10:210
876299190,16cyclictest3991-21H222:10:210
876299190,16cyclictest3979-21H222:10:210
876299190,16cyclictest3976-21H222:10:210
876299190,16cyclictest3976-21H222:10:210
876499182,15cyclictest28-21ksoftirqd/211:55:322
876499182,15cyclictest28-21ksoftirqd/208:41:332
876499182,15cyclictest28-21ksoftirqd/208:41:322
876499182,15cyclictest28-21ksoftirqd/207:16:172
8764991816,1cyclictest28-21ksoftirqd/212:13:562
8764991815,2cyclictest4035-21H222:10:212
8764991814,3cyclictest4580-21if_eno108:55:172
876499181,2cyclictest15062-21nvmesmart_nvme011:05:182
876499181,17cyclictest8761-21cyclictest09:11:562
876499180,4cyclictest0-21swapper/207:46:062
876499180,2cyclictest5680-21sort09:50:222
876499180,2cyclictest399-20systemd-journal10:05:002
876499180,2cyclictest3983-21H222:10:212
876499180,2cyclictest3983-21H222:10:212
876499180,2cyclictest3981-21H222:10:212
876499180,17cyclictest3979-21H222:10:212
876499180,17cyclictest3976-21H222:10:212
876499180,17cyclictest27353-21munin-plugin-st09:35:012
876499180,17cyclictest19901-21ntp_kernel_err09:20:182
876499180,17cyclictest0-21swapper/210:40:212
876399182,15cyclictest5096-21grep08:55:191
876399182,15cyclictest22135-21expr12:15:181
876399182,15cyclictest18182-21apache2ctl08:25:011
8763991814,3cyclictest3991-21H222:10:211
8763991814,3cyclictest3989-21H222:10:211
8763991814,3cyclictest3979-21H222:10:211
8763991814,3cyclictest17870-21grep11:10:171
8763991814,3cyclictest17870-21grep11:10:161
8763991814,3cyclictest0-21swapper/109:27:381
8763991814,3cyclictest0-21swapper/107:27:081
8763991814,2cyclictest3985-21H222:10:211
8763991814,2cyclictest20729-21ps11:15:191
876399181,16cyclictest14506-21snapd07:40:391
876399180,2cyclictest3991-21H222:10:211
876399180,2cyclictest3989-21H222:10:211
876399180,2cyclictest3989-21H222:10:211
876399180,2cyclictest3976-21H222:10:211
876399180,2cyclictest3976-21H222:10:211
876399180,2cyclictest3976-21H222:10:211
876399180,2cyclictest0-21swapper/107:16:341
876299182,15cyclictest0-21swapper/009:46:510
8762991816,1cyclictest9-21ksoftirqd/008:08:150
8762991816,1cyclictest0-21swapper/009:19:070
8762991815,2cyclictest3976-21H222:10:210
8762991813,2cyclictest3989-21H222:10:210
876299181,1cyclictest0-21swapper/011:04:500
876299181,16cyclictest0-21swapper/008:13:460
876299180,2cyclictest3983-21H222:10:210
876299180,2cyclictest3981-21H222:10:210
876299180,2cyclictest3976-21H222:10:210
876299180,1cyclictest3976-21H222:10:210
876299180,15cyclictest4035-21H222:10:210
8764991715,1cyclictest0-21swapper/209:40:172
8764991714,2cyclictest993-21dbus-daemon10:25:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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