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2026-08-16 - 12:04
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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 Sun Aug 16, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
924233993936,1cyclictest0-21swapper/319:30:393
924233993128,1cyclictest0-21swapper/300:20:003
924233992825,1cyclictest0-21swapper/321:40:013
12041362250,10sleep0151ktimers/022:25:510
92423399246,6cyclictest1158502-21turbostat22:00:003
924233992421,1cyclictest0-21swapper/323:00:143
924233992420,1cyclictest0-21swapper/300:20:253
924233992420,1cyclictest0-21swapper/300:20:253
924233992320,1cyclictest0-21swapper/320:00:253
924233992219,1cyclictest0-21swapper/320:20:003
924233992119,0cyclictest0-21swapper/322:40:063
924233992118,1cyclictest0-21swapper/323:00:003
924233992118,1cyclictest0-21swapper/320:40:143
924233992017,1cyclictest0-21swapper/321:10:273
924233992017,1cyclictest0-21swapper/319:45:263
92423399201,14cyclictest964672-21taskset19:39:123
92423399201,13cyclictest1088185-21taskset21:15:023
924233992010,7cyclictest9994362sleep320:05:183
92423399192,13cyclictest979290-21taskset19:50:183
92423399192,13cyclictest1262582-21taskset23:12:043
924233991916,1cyclictest0-21swapper/323:30:013
924233991916,1cyclictest0-21swapper/322:00:223
924233991916,1cyclictest0-21swapper/300:05:213
924233991916,1cyclictest0-21swapper/300:00:233
92423399191,14cyclictest1288403-21taskset23:33:413
92423399191,14cyclictest1034865-21taskset20:30:273
92423399191,13cyclictest990390-21turbostat20:00:003
92423399191,13cyclictest1269218-21sleep23:24:553
92423399190,14cyclictest1135017-21taskset21:44:573
924233991815,1cyclictest0-21swapper/323:40:063
924233991815,1cyclictest0-21swapper/322:20:173
92423399181,14cyclictest1180630-21taskset22:11:143
92423399181,13cyclictest939122-21sleep19:20:003
92423399181,13cyclictest1339693-21taskset00:14:063
92423399181,13cyclictest1294648-21taskset23:37:303
92423399181,13cyclictest1111574-21taskset21:30:013
92423399181,13cyclictest1049109-21taskset20:45:183
92423399181,12cyclictest1016270-21taskset20:20:023
9240982181,13sleep2924278-21cat19:10:012
924233991714,1cyclictest0-21swapper/322:30:133
924233991714,1cyclictest0-21swapper/321:46:133
924233991714,1cyclictest0-21swapper/321:20:133
924233991714,1cyclictest0-21swapper/319:20:353
924233991714,1cyclictest0-21swapper/300:35:123
92423399171,13cyclictest930374-21taskset19:12:533
92423399171,13cyclictest1365357-21taskset00:32:193
92423399171,13cyclictest1319836-21taskset23:55:263
92423399171,13cyclictest1236999-21taskset22:53:163
92423399171,13cyclictest1217888-21turbostat22:40:003
92423399171,13cyclictest1204078-21taskset22:25:413
92423399171,13cyclictest1188866-21taskset22:17:153
92423399171,13cyclictest1188866-21taskset22:17:153
92423399171,13cyclictest1173086-21taskset22:07:013
92423399171,13cyclictest1150014-21taskset21:53:113
92423399171,13cyclictest1118044-21taskset21:31:253
92423399171,13cyclictest1067261-21taskset20:59:593
92423399171,12cyclictest945840-21chrt19:25:133
92423399171,12cyclictest1358836-21taskset00:25:333
92423399171,12cyclictest1256053-21taskset23:05:363
92423399171,12cyclictest1230407-21taskset22:45:423
92423399171,12cyclictest1079748-21taskset21:05:323
92423399171,12cyclictest1060207-21taskset20:50:233
92423399171,12cyclictest1041288-21taskset20:35:563
92423399171,11cyclictest1301640-21chrt23:45:123
924233991614,1cyclictest0-21swapper/323:50:163
924233991614,1cyclictest0-21swapper/319:10:013
924233991614,0cyclictest0-21swapper/319:40:163
92423399161,12cyclictest1268870-21taskset23:16:063
92423399161,12cyclictest1073582-21taskset21:03:023
92423399161,12cyclictest1009505-21taskset20:14:003
92423399161,11cyclictest1028616-21taskset20:26:423
12631232161,5sleep0222-21plymouthd23:15:150
11037542162,4sleep01103989-21appstreamcli21:25:010
6881150,2low-memory-moni0-21swapper/019:30:010
11896402141,9sleep01189646-21ssh22:19:270
11896402141,9sleep01189646-21ssh22:19:260
10312292141,5sleep21033024-21grep20:30:192
12362152131,9sleep21236264-21ntpq22:50:232
11171682138,2sleep21111804-21/usr/sbin/munin21:30:262
13396512121,2sleep10-21swapper/100:13:331
12864432121,8sleep21287401-21memory23:30:202
11275002122,2sleep2171rcu_preempt21:40:122
10626712121,9sleep21064388-21grep20:55:172
7861110,4gdbus957960-21fwupdmgr19:30:401
13612862110,8sleep01363022-21cut00:30:200
13530252111,7sleep10-21swapper/100:25:121
13009882110,8sleep21294904-21sendmail-msp23:40:362
12186122113,5sleep21219376-21irqrtprio22:40:172
11892992110,8sleep11189304-21sh22:18:241
11892992110,8sleep11189304-21sh22:18:231
11808222110,9sleep11180828-21ssh22:11:451
11807792110,8sleep21180785-21ssh22:11:382
11588732111,6sleep21158531-21sendmail-msp22:00:162
9778932100,7sleep2977897-21grep19:50:142
9650122101,6sleep1964796-21sendmail-msp19:40:021
9645292101,2sleep2222-21plymouthd19:37:232
9240182101,4sleep0222-21plymouthd19:08:590
13711392100,7sleep01371261-21mailstats00:35:250
13653932101,6sleep2222-21plymouthd00:32:472
12510962101,6sleep21251870-21kthreadcore23:05:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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