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2026-08-21 - 10:58
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot8.osadl.org (updated Fri Aug 21, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1553872740,1sleep0155390-21grep21:15:280
4179405992825,1cyclictest0-21swapper/321:20:083
4179405992521,1cyclictest0-21swapper/322:40:183
4179405992418,3cyclictest26462-21chrt19:40:123
4179405992321,1cyclictest0-21swapper/322:00:273
4179405992321,1cyclictest0-21swapper/300:20:153
4179405992320,1cyclictest0-21swapper/322:33:333
4179405992320,1cyclictest0-21swapper/321:40:063
4179405992320,1cyclictest0-21swapper/300:35:473
4179405992219,1cyclictest0-21swapper/323:00:193
4179405992219,1cyclictest0-21swapper/322:45:253
4179405992219,1cyclictest0-21swapper/321:00:033
4179405992219,1cyclictest0-21swapper/300:10:213
4179405992219,1cyclictest0-21swapper/300:10:003
417940599212,14cyclictest109143-21taskset20:41:353
4179405992118,1cyclictest0-21swapper/323:20:233
4179405992118,1cyclictest0-21swapper/321:10:003
4179405992118,1cyclictest0-21swapper/300:15:163
4179405992117,1cyclictest0-21swapper/320:01:023
417940599211,15cyclictest83791-21turbostat20:25:003
417940599211,15cyclictest391384-21taskset23:46:583
417940599211,15cyclictest391384-21taskset23:46:583
417940599207,10cyclictest314069-21turbostat23:00:003
417940599205,5cyclictest267002-21taskset22:29:553
4179405992018,1cyclictest0-21swapper/300:00:203
4179405992017,1cyclictest0-21swapper/323:35:293
4179405992017,1cyclictest0-21swapper/323:35:283
4179405992017,1cyclictest0-21swapper/323:30:233
4179405992017,1cyclictest0-21swapper/320:40:003
4179405992017,1cyclictest0-21swapper/319:20:263
417940599201,15cyclictest217775-21taskset21:55:243
417940599201,14cyclictest408327-21taskset00:00:003
4179405991917,1cyclictest0-21swapper/321:15:013
4179405991916,1cyclictest0-21swapper/322:12:173
4179405991916,1cyclictest0-21swapper/321:52:203
4179405991916,1cyclictest0-21swapper/321:50:013
4179405991916,1cyclictest0-21swapper/321:35:243
4179405991916,1cyclictest0-21swapper/321:30:223
4179405991916,1cyclictest0-21swapper/321:30:003
4179405991916,1cyclictest0-21swapper/321:15:273
4179405991916,1cyclictest0-21swapper/320:17:013
4179405991916,1cyclictest0-21swapper/319:50:023
4179405991916,1cyclictest0-21swapper/319:35:113
4179405991916,1cyclictest0-21swapper/300:30:233
4179405991916,1cyclictest0-21swapper/300:25:223
417940599191,14cyclictest305308-21taskset22:52:253
417940599191,14cyclictest228203-21chrt22:05:143
417940599191,13cyclictest89831-21taskset20:25:383
417940599191,13cyclictest384718-21turbostat23:45:003
1363482190,9sleep0137159-21grep21:05:180
4179405991816,1cyclictest0-21swapper/323:50:263
4179405991816,1cyclictest0-21swapper/319:25:233
4179405991816,1cyclictest0-21swapper/319:15:013
4179405991815,1cyclictest0-21swapper/323:25:233
4179405991815,1cyclictest0-21swapper/323:15:243
4179405991815,1cyclictest0-21swapper/323:14:413
4179405991815,1cyclictest0-21swapper/322:36:513
4179405991815,1cyclictest0-21swapper/322:15:183
4179405991815,1cyclictest0-21swapper/320:50:153
4179405991815,1cyclictest0-21swapper/319:50:163
417940599181,13cyclictest257555-21taskset22:20:303
417940599181,13cyclictest113725-21taskset20:45:193
3352272180,7sleep1331ktimers/123:10:181
4179405991714,1cyclictest0-21swapper/320:31:403
4179405991714,1cyclictest0-21swapper/320:10:133
417940599171,13cyclictest64284-21taskset20:07:153
417940599171,13cyclictest19664-21sleep19:35:003
417940599171,12cyclictest45553-21chrt19:55:123
417940599171,12cyclictest322321-21taskset23:05:123
4179405991614,1cyclictest0-21swapper/319:15:153
417940599161,12cyclictest128249-21taskset20:55:293
4058112161,11sleep2405856-21ntpq23:55:232
1032312162,4sleep2222-21plymouthd20:40:112
3792822130,10sleep1380607-21cut23:40:181
3678232130,10sleep1367831-21ssh23:31:531
2744272130,9sleep0274433-21ssh22:33:550
1651262131,8sleep2165148-21idleruntime-cro21:25:002
906222121,8sleep190651-21sort20:30:151
4707542120,9sleep2470760-21ssh00:39:342
4474782121,9sleep01-21systemd00:25:000
4073842120,2sleep10-21swapper/123:58:071
3378642120,2sleep20-21swapper/223:15:012
321352121,8sleep226048-21sendmail-msp19:40:562
2947312120,2sleep0222-21plymouthd22:45:210
2891092120,9sleep1282752-21sendmail-msp22:40:461
775502110,8sleep177331-21sendmail-msp20:20:051
725482111,7sleep273498-21tr20:15:162
694242111,7sleep269862-21grep20:10:202
66292110,1sleep20-21swapper/219:22:082
4394132110,5sleep00-21swapper/000:19:230
41732012110,5sleep1222-21plymouthd19:05:041
3203622111,4sleep1314100-21sendmail-msp23:00:331
2205492110,8sleep2219938-21sendmail-msp22:00:172
1815352110,8sleep1182055-21irqcore21:35:181
1715002110,8sleep0171506-21ssh21:25:510
1493752111,2sleep2222-21plymouthd21:14:552
4571052104,3sleep1458647-21cat00:30:181
4218012102,5sleep2421833-21ntpq00:05:252
4159362105,3sleep10-21swapper/100:04:411
3379692101,5sleep0337750-21appstreamcli23:15:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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