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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 50 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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