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2026-04-28 - 01:57
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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 rack1slot3.osadl.org (updated Tue Apr 28, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
321290899140,12cyclictest0-21swapper/320:30:123
321290899130,11cyclictest0-21swapper/320:05:133
3212908991211,0cyclictest0-21swapper/320:35:113
3212908991210,0cyclictest0-21swapper/321:15:133
321290899120,0cyclictest0-21swapper/321:20:113
321290899119,1cyclictest0-21swapper/323:35:193
3212908991110,0cyclictest0-21swapper/321:15:013
3212908991110,0cyclictest0-21swapper/320:40:133
3212908991110,0cyclictest0-21swapper/319:50:123
321290899110,1cyclictest0-21swapper/322:35:103
321290899110,11cyclictest0-21swapper/320:25:183
321290899110,10cyclictest0-21swapper/323:15:193
321290899110,10cyclictest0-21swapper/319:45:013
321290899110,10cyclictest0-21swapper/300:35:193
321290899110,0cyclictest0-21swapper/323:35:013
321290899110,0cyclictest0-21swapper/322:45:023
321290899110,0cyclictest0-21swapper/319:25:003
321290899110,0cyclictest0-21swapper/300:25:133
3212908991010,0cyclictest0-21swapper/323:00:133
3212908991010,0cyclictest0-21swapper/321:45:223
3212908991010,0cyclictest0-21swapper/321:00:193
3212908991010,0cyclictest0-21swapper/320:45:183
3212908991010,0cyclictest0-21swapper/319:30:103
321290899100,9cyclictest0-21swapper/322:15:003
321290899100,9cyclictest0-21swapper/322:00:183
321290899100,9cyclictest0-21swapper/322:00:183
321290899100,10cyclictest0-21swapper/321:55:013
321290899100,10cyclictest0-21swapper/320:00:003
321290899100,0cyclictest0-21swapper/323:58:453
32129089999,0cyclictest0-21swapper/322:50:133
32129089999,0cyclictest0-21swapper/320:50:173
32129089998,0cyclictest0-21swapper/323:45:143
32129089998,0cyclictest0-21swapper/322:05:133
32129089990,0cyclictest0-21swapper/323:10:013
32129089990,0cyclictest0-21swapper/321:08:443
32129089990,0cyclictest0-21swapper/319:35:183
32129089988,0cyclictest0-21swapper/322:30:123
32129089988,0cyclictest0-21swapper/322:00:003
32129089988,0cyclictest0-21swapper/321:35:153
32129089988,0cyclictest0-21swapper/319:30:003
32129089988,0cyclictest0-21swapper/319:19:593
32129089980,7cyclictest0-21swapper/320:15:203
32129089980,0cyclictest0-21swapper/321:45:013
3211128281,4sleep30-21swapper/319:05:153
32129089977,0cyclictest0-21swapper/323:50:163
32129089977,0cyclictest0-21swapper/323:25:143
32129089966,0cyclictest0-21swapper/323:40:123
32129089966,0cyclictest0-21swapper/323:20:173
32129089966,0cyclictest0-21swapper/322:25:013
32129089966,0cyclictest0-21swapper/322:15:013
32129089966,0cyclictest0-21swapper/320:55:123
32129089966,0cyclictest0-21swapper/320:00:183
32129089966,0cyclictest0-21swapper/319:10:123
32129089965,0cyclictest0-21swapper/300:10:203
32129089961,4cyclictest26450irq/132-ahci[0000:00:17.0]22:45:553
32129089960,5cyclictest0-21swapper/300:25:013
32129089955,0cyclictest0-21swapper/319:49:553
32129089951,4cyclictest26450irq/132-ahci[0000:00:17.0]20:22:453
32129089951,3cyclictest26450irq/132-ahci[0000:00:17.0]00:30:153
32129089950,2cyclictest0-21swapper/323:00:013
3212581253,2sleep10-21swapper/119:07:401
3271375240,0sleep2441rcuc/221:35:152
3218834240,4sleep20-21swapper/219:22:232
32129089941,3cyclictest26450irq/132-ahci[0000:00:17.0]22:26:103
32129089940,3cyclictest3339613-21chrt00:15:493
32129089940,3cyclictest3335413-21taskset00:05:283
32129089940,3cyclictest3332457-21chrt00:00:163
32129089940,3cyclictest3312192-21chrt23:10:323
32129089940,3cyclictest3237303-21chrt20:10:023
32129089940,2cyclictest0-21swapper/321:30:133
32129089940,0cyclictest0-21swapper/321:25:473
3212488242,1sleep20-21swapper/219:06:302
3348305230,0sleep00-21swapper/000:38:510
3335744230,0sleep00-21swapper/000:08:270
3327822230,1sleep23327848-21apt-get23:50:112
3313914230,2sleep13312946-21/usr/sbin/munin23:15:201
3268932230,1sleep03268962-21apt-get21:30:130
3263664230,2sleep03263835-21python321:15:200
3222169231,1sleep13222407-21tail19:30:181
3221384230,2sleep03221631-21diskstats19:30:130
3211227231,1sleep00-21swapper/019:05:150
3326177220,1sleep03326261-21irqstats23:45:170
3324458220,1sleep13324631-21smartctl23:40:171
3324095220,1sleep23324177-21irqstats23:40:152
3318894220,1sleep10-21swapper/123:27:081
3317130220,0sleep00-21swapper/023:24:560
3310489220,0sleep00-21swapper/023:08:550
3302008220,1sleep03302163-21latency_hist22:50:020
3293644220,1sleep03291600-21perf22:29:560
3291961220,1sleep13292245-21df22:25:131
3286210220,1sleep13286336-21ntp_states22:10:161
3285560220,0sleep00-21swapper/022:10:110
3281496220,2sleep0328-21plymouthd22:00:140
3281496220,2sleep0328-21plymouthd22:00:140
3279047220,0sleep00-21swapper/021:55:020
3262218220,1sleep03262220-21ssh21:13:440
3242130220,1sleep23242412-21grep20:20:182
3236722220,2sleep00-21swapper/020:05:350
3233217220,0sleep10-21swapper/119:59:561
3232358220,1sleep03232529-21python319:55:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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