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2026-06-10 - 14:23
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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 Wed Jun 10, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3231399240,19cyclictest0-21swapper/120:55:131
32318992322,0cyclictest0-21swapper/222:40:162
3231899230,5cyclictest0-21swapper/220:30:142
3230999230,5cyclictest0-21swapper/023:58:410
3231399220,22cyclictest0-21swapper/121:54:521
32318992118,1cyclictest0-21swapper/222:46:282
3230999214,13cyclictest28909-21grep23:50:000
32318992018,1cyclictest0-21swapper/200:00:142
32318992017,2cyclictest3979-21H222:10:212
3231399200,17cyclictest0-21swapper/119:39:251
32318991917,1cyclictest0-21swapper/222:53:562
32318991916,1cyclictest0-21swapper/200:35:162
3231899190,18cyclictest1584-21nfsd419:10:172
32313991915,3cyclictest0-21swapper/123:54:421
32313991911,0cyclictest0-21swapper/120:36:381
3231399190,18cyclictest0-21swapper/122:01:091
32309991917,1cyclictest0-21swapper/022:40:490
32309991916,2cyclictest6362-21taskset23:06:480
32309991914,4cyclictest0-21swapper/020:01:110
32309991914,3cyclictest15758-21nvmesmart_nvme000:20:180
32309991912,6cyclictest0-21swapper/022:12:210
3230999190,18cyclictest0-21swapper/023:03:000
3230999190,18cyclictest0-21swapper/021:00:180
3230999190,16cyclictest0-21swapper/021:40:140
3231899182,1cyclictest0-21swapper/222:29:542
3231899182,15cyclictest22197-21latency_hist20:45:022
32318991815,2cyclictest7096-21cat20:15:192
32318991815,2cyclictest24890-21munin-run20:50:012
32318991814,3cyclictest863-21avahi-daemon00:05:242
3231899181,2cyclictest29121-21smartctl20:55:202
3231899180,17cyclictest455-21plymouthd19:55:192
3231899180,17cyclictest4035-21H222:10:212
3231899180,17cyclictest26126-21munin-run21:50:002
3231899180,17cyclictest23885-21cut23:40:142
3231899180,16cyclictest4035-21H222:10:212
3231899180,16cyclictest32455-21anvil23:00:122
3231899180,15cyclictest0-21swapper/222:35:162
3231399182,15cyclictest0-21swapper/122:50:191
32313991816,1cyclictest0-21swapper/119:58:321
32313991815,2cyclictest31611-21cat20:05:001
32313991813,4cyclictest0-21swapper/123:35:041
3231399180,17cyclictest843-21systemd-network20:28:581
3231399180,17cyclictest3981-21H222:10:211
3230999182,15cyclictest0-21swapper/021:30:210
32309991816,1cyclictest3991-21H222:10:210
32309991816,1cyclictest0-21swapper/023:53:060
32309991816,1cyclictest0-21swapper/019:45:290
32309991816,1cyclictest0-21swapper/019:45:280
32309991814,3cyclictest4333-21nfsd400:00:180
3230999181,2cyclictest18107-21sed22:30:200
3230999181,16cyclictest3983-21H222:10:210
3230999181,16cyclictest3983-21H222:10:210
3231899172,1cyclictest0-21swapper/221:12:492
32318991715,1cyclictest30568-21cut22:55:142
32318991715,1cyclictest0-21swapper/219:45:212
32318991715,1cyclictest0-21swapper/219:45:212
32318991715,1cyclictest0-21swapper/219:35:232
32318991714,2cyclictest843-21systemd-network21:38:032
32318991714,2cyclictest7941-21idleruntime23:10:162
32318991714,2cyclictest7621-21cstates21:15:172
32318991714,2cyclictest713-21sed22:00:172
32318991714,2cyclictest587-21ntpq20:05:182
32318991714,2cyclictest3976-21H222:10:212
32318991714,2cyclictest32520-21cpuspeed_turbos23:55:152
32318991714,2cyclictest31049-21tr21:00:142
32318991714,2cyclictest30392-21idleruntime23:50:152
32318991714,2cyclictest16867-21cstates22:30:132
32318991714,2cyclictest15995-21df23:25:152
32318991714,2cyclictest1375-21munin-node21:40:112
32318991714,2cyclictest11425-21cstates20:25:142
3231899171,1cyclictest0-21swapper/223:05:202
3231899171,15cyclictest8074-21chrt19:20:492
3231899171,15cyclictest8074-21chrt19:20:482
3231899170,3cyclictest0-21swapper/221:30:212
3231899170,2cyclictest3979-21H222:10:212
3231899170,2cyclictest3707-21master23:34:192
3231899170,2cyclictest31456-21chrt21:58:422
3231899170,2cyclictest30298-21ntpq20:00:192
3231899170,2cyclictest23113-21cat19:50:022
3231899170,2cyclictest22388-21pzem_power23:35:202
3231899170,2cyclictest14505-21snapd20:52:362
3231899170,2cyclictest12933-21cstates23:20:142
3231899170,1cyclictest0-21swapper/222:23:222
3231899170,1cyclictest0-21swapper/221:26:572
3231899170,16cyclictest8908-21expr22:15:122
3231899170,16cyclictest3414-21master00:18:452
3231899170,16cyclictest20166-21cstates00:30:132
3231899170,16cyclictest18108-21expr19:40:152
3231899170,16cyclictest17189-21cstates20:35:152
3231899170,16cyclictest11784-21dpkg19:30:012
3231899170,16cyclictest10309-21expr21:20:132
3231899170,15cyclictest0-21swapper/219:15:132
3231399172,1cyclictest3976-21H222:10:211
32313991716,0cyclictest0-21swapper/100:19:551
32313991715,1cyclictest4466-21cpuspeed_turbos23:05:131
32313991715,1cyclictest0-21swapper/122:30:211
32313991714,2cyclictest4035-21H222:10:211
32313991714,2cyclictest25652-21grep20:50:151
32313991714,2cyclictest14765-21taskset23:22:091
32313991714,2cyclictest11393-21smartctl21:20:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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