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2026-03-26 - 11:21
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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 Thu Mar 26, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2998699250,4cyclictest0-21swapper/000:05:010
29990992413,10cyclictest0-21swapper/123:25:001
2998699221,20cyclictest9-21ksoftirqd/022:24:310
2999599210,20cyclictest843-21systemd-network23:08:432
29990992117,3cyclictest0-21swapper/100:34:261
29986992117,3cyclictest0-21swapper/019:56:180
2999599200,17cyclictest0-21swapper/219:56:202
2999099203,11cyclictest32274-21munin-run21:10:001
2999099200,5cyclictest0-21swapper/120:45:031
2999099200,18cyclictest0-21swapper/120:09:241
2998699203,16cyclictest10839-21cpuspeed_turbos22:25:120
29986992017,2cyclictest6903-21wc23:15:120
29986992017,2cyclictest21290-21ls21:45:160
29986992016,3cyclictest375-21plymouth22:05:200
29986992016,3cyclictest10887-21dpkg00:20:000
2999599192,16cyclictest0-21swapper/223:43:492
2999599190,17cyclictest0-21swapper/220:21:592
29990991917,1cyclictest6982-21cat22:15:211
2999099191,3cyclictest0-21swapper/122:00:131
2998699192,2cyclictest22595-21sed20:50:160
2998699192,16cyclictest7125-21fschecks_count19:25:130
2998699192,16cyclictest32261-21sed23:00:210
2998699192,16cyclictest31288-21grep19:10:170
2998699192,16cyclictest30092-21run-parts22:00:210
2998699192,16cyclictest17521-21cut21:40:010
2998699192,16cyclictest11608-21chrt23:21:400
2998699192,16cyclictest11391-21chrt19:33:070
29986991917,1cyclictest0-21swapper/023:10:010
29986991916,2cyclictest9589-21expr21:25:150
29986991916,2cyclictest7394-21cut21:20:150
29986991916,2cyclictest6639-21cut23:15:010
29986991916,2cyclictest58952chrt19:22:260
29986991916,2cyclictest3240-21perf21:15:000
29986991916,2cyclictest2600-21expr22:10:140
29986991916,2cyclictest2600-21expr22:10:130
29986991915,3cyclictest0-21swapper/023:30:180
29986991915,3cyclictest0-21swapper/023:30:180
2998699191,4cyclictest0-21swapper/020:44:230
2998699190,18cyclictest0-21swapper/019:49:290
2999599182,2cyclictest12773-21cat19:35:172
2999599182,15cyclictest0-21swapper/222:27:252
29995991816,1cyclictest0-21swapper/221:20:052
29995991816,1cyclictest0-21swapper/219:45:162
29995991814,3cyclictest8057-21/usr/sbin/munin00:15:122
29995991814,2cyclictest16098-21nfsd419:40:172
2999599181,2cyclictest7842-21cat00:15:002
2999599181,16cyclictest29212-21sed22:55:202
2999599180,2cyclictest3985-21H222:10:212
2999599180,1cyclictest0-21swapper/200:30:132
2999099189,0cyclictest0-21swapper/123:29:381
2999099182,15cyclictest101802chrt22:23:111
29990991816,1cyclictest0-21swapper/119:45:161
29990991815,3cyclictest0-21swapper/120:55:291
29990991815,2cyclictest6583-21grep00:10:181
29990991815,1cyclictest0-21swapper/119:38:301
2999099181,15cyclictest9075-21taskset23:19:331
2998699183,1cyclictest0-21swapper/020:45:160
2998699182,15cyclictest9-21ksoftirqd/022:30:120
29986991816,1cyclictest0-21swapper/020:15:030
29986991815,2cyclictest98272chrt20:28:170
29986991815,2cyclictest5980-21grep20:20:170
29986991815,2cyclictest5084-21date00:10:010
29986991815,2cyclictest455-21plymouthd21:05:170
29986991815,2cyclictest21274-21grep23:40:140
29986991815,2cyclictest201332chrt23:39:030
29986991815,2cyclictest19022-21dump-pmu-power00:35:000
29986991815,2cyclictest17550-21/usr/sbin/munin21:40:210
29986991815,2cyclictest0-21swapper/023:25:150
29986991815,2cyclictest0-21swapper/020:35:130
29986991815,2cyclictest0-21swapper/019:50:130
29986991814,3cyclictest0-21swapper/021:00:130
29986991814,3cyclictest0-21swapper/020:35:010
29986991814,3cyclictest0-21swapper/019:41:310
29986991814,3cyclictest0-21swapper/000:35:160
2998699181,2cyclictest295782sleep022:59:540
2998699181,2cyclictest28597-21cat23:55:000
2998699181,2cyclictest0-21swapper/023:55:130
2998699181,2cyclictest0-21swapper/023:45:170
2998699181,16cyclictest23250-21expr22:45:200
2998699181,16cyclictest20180-21sed22:40:200
2998699181,16cyclictest0-21swapper/020:55:100
2998699180,17cyclictest0-21swapper/022:20:010
2998699180,17cyclictest0-21swapper/021:50:590
2998699180,17cyclictest0-21swapper/019:15:210
29995991715,1cyclictest0-21swapper/223:25:152
29995991715,1cyclictest0-21swapper/222:00:142
29995991715,1cyclictest0-21swapper/220:25:162
29995991714,2cyclictest8823-21chrt23:16:142
29995991714,2cyclictest7895-21grep19:25:182
29995991714,2cyclictest399-20systemd-journal21:02:382
29995991714,2cyclictest3707-21master20:32:422
29995991714,2cyclictest32218-21sshd19:10:222
29995991714,2cyclictest30510-21sed23:55:202
29995991714,2cyclictest30452-21apache_accesses23:00:112
29995991714,2cyclictest28520-21/usr/sbin/munin20:05:172
29995991714,2cyclictest24674-21cpuspeed_turbos22:50:132
29995991714,2cyclictest21444-21date20:50:012
29995991714,2cyclictest17940-21timerandwakeup22:35:202
29995991714,2cyclictest16221-21mailstats21:35:202
29995991714,2cyclictest1-21systemd21:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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