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2026-06-22 - 03:52
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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 Jun 22, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24184992414,0cyclictest0-21swapper/123:34:421
24184992414,0cyclictest0-21swapper/123:34:421
2418399230,5cyclictest0-21swapper/022:39:200
2418599220,18cyclictest0-21swapper/222:59:562
2418599210,20cyclictest843-21systemd-network22:33:262
2418599210,20cyclictest0-21swapper/220:18:582
24183992119,1cyclictest0-21swapper/022:15:490
24185992017,2cyclictest15741-21nfsd419:50:192
2418599200,17cyclictest3981-21H222:10:212
2418499201,13cyclictest0-21swapper/123:02:451
2418499200,19cyclictest843-21systemd-network21:46:321
2418499200,18cyclictest0-21swapper/122:55:011
2418399202,5cyclictest0-21swapper/021:42:350
2418399200,2cyclictest4035-21H222:10:210
24185991917,1cyclictest0-21swapper/223:25:432
24185991917,1cyclictest0-21swapper/200:22:302
24185991914,2cyclictest3987-21H222:10:212
24185991912,3cyclictest0-21swapper/219:16:512
24185991912,3cyclictest0-21swapper/219:16:512
2418599190,18cyclictest26049-21fschecks_count22:05:142
2418599190,16cyclictest4035-21H222:10:212
2418499193,15cyclictest21-21ksoftirqd/100:00:281
24184991917,1cyclictest0-21swapper/121:16:071
2418499190,1cyclictest0-21swapper/122:37:131
2418499190,1cyclictest0-21swapper/100:12:281
24183991917,1cyclictest0-21swapper/021:58:580
2418399190,18cyclictest4035-21H222:10:210
2418399190,18cyclictest0-21swapper/023:24:450
24185991816,1cyclictest6506-21cat20:30:232
24185991816,1cyclictest28-21ksoftirqd/221:38:152
24185991816,1cyclictest0-21swapper/222:12:212
24185991815,2cyclictest5677-21chrt19:34:172
24185991815,2cyclictest399-20systemd-journal19:20:002
24185991815,2cyclictest3351-21lxd22:40:512
24185991815,2cyclictest21054-21cat23:50:122
24185991814,3cyclictest5946-21ntp_offset22:25:182
24185991814,3cyclictest1829-21systemd-journal20:05:172
24185991814,3cyclictest12762-21proc_pri00:30:202
2418599181,16cyclictest18452-21nfsd421:50:202
2418599180,3cyclictest4035-21H222:10:212
2418599180,3cyclictest22879-21cut22:00:142
2418599180,17cyclictest14731-21cat23:40:012
2418599180,17cyclictest13172-21smartctl21:40:182
2418599180,15cyclictest3976-21H222:10:212
2418499182,15cyclictest0-21swapper/120:05:011
24184991816,1cyclictest0-21swapper/123:59:061
24184991816,1cyclictest0-21swapper/120:15:361
24184991815,2cyclictest0-21swapper/122:05:191
24184991814,3cyclictest3987-21H222:10:211
24184991813,2cyclictest4035-21H222:10:211
24184991813,2cyclictest4035-21H222:10:211
2418499180,2cyclictest0-21swapper/121:44:321
2418499180,16cyclictest3989-21H222:10:211
2418499180,15cyclictest3991-21H222:10:211
2418399182,15cyclictest7369-21cpuspeed_turbos22:30:140
2418399182,15cyclictest12156-21if_err_enp1s000:30:160
24183991814,3cyclictest8484-21basename21:35:010
24183991814,3cyclictest4099-21H222:10:210
24183991814,3cyclictest14496-21snapd20:25:270
24183991814,2cyclictest15393-21nfsd400:35:160
24183991813,2cyclictest3989-21H222:10:210
2418399181,2cyclictest15848-21apt-key22:45:010
2418399180,2cyclictest3991-21H222:10:210
2418399180,1cyclictest3983-21H222:10:210
2418399180,17cyclictest3981-21H222:10:210
2418399180,17cyclictest0-21swapper/000:00:120
2418399180,16cyclictest3987-21H222:10:210
2418399180,16cyclictest3981-21H222:10:210
2418399180,16cyclictest3981-21H222:10:210
2418399180,16cyclictest3979-21H222:10:210
2418399180,15cyclictest3979-21H222:10:210
24185991716,1cyclictest0-21swapper/223:15:192
24185991715,1cyclictest0-21swapper/221:19:372
24185991715,1cyclictest0-21swapper/220:45:152
24185991715,1cyclictest0-21swapper/219:43:222
24185991714,2cyclictest9930-21latency_hist20:40:012
24185991714,2cyclictest4035-21H222:10:212
24185991714,2cyclictest2191-21fschecks_time20:25:172
24185991714,2cyclictest16897-21nfsd420:50:172
24185991714,2cyclictest16878-21latency_hist21:50:002
24185991714,2cyclictest16264-21cut22:45:142
24185991714,2cyclictest0-21swapper/220:10:142
24185991713,3cyclictest26580-21perf23:05:002
2418599171,15cyclictest0-21swapper/220:55:122
2418599170,2cyclictest3981-21H222:10:212
2418599170,2cyclictest3981-21H222:10:212
2418599170,2cyclictest3976-21H222:10:212
2418599170,2cyclictest29333-21expr00:05:162
2418599170,16cyclictest4099-21H222:10:212
2418599170,16cyclictest3308-21if_enp1s000:15:142
2418599170,16cyclictest32653-21/usr/sbin/munin21:20:212
2418599170,16cyclictest3245-21grep22:20:212
2418599170,16cyclictest32125-21cpuspeed_turbos00:10:142
2418599170,16cyclictest31361-21cstates20:20:132
2418599170,16cyclictest28532-21perf00:05:012
2418599170,16cyclictest20539-21df21:55:132
2418599170,16cyclictest1348-21lxd00:36:342
2418599170,16cyclictest10754-21basename22:35:162
2418599170,16cyclictest0-21swapper/222:15:142
2418599170,16cyclictest0-21swapper/221:30:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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