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2026-05-21 - 04:51
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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 rackfslot7.osadl.org (updated Thu May 21, 2026 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3836940999416,59cyclictest3965181-21unixbench_multi23:00:233
383694099919,79cyclictest0-21swapper/322:46:513
3836940997776,0cyclictest3968487-21apt-config23:10:013
3836938997739,19cyclictest331ktimers/119:15:151
3836940997031,38cyclictest3894577-21/usr/sbin/munin20:55:183
3836940996931,19cyclictest0-21swapper/300:07:593
3836940995919,39cyclictest3958124-21df_inode22:50:133
383694099590,19cyclictest0-21swapper/321:20:443
3836940995818,19cyclictest0-21swapper/322:05:123
383694099580,56cyclictest0-21swapper/300:17:453
383694099580,18cyclictest0-21swapper/321:25:533
383694099580,18cyclictest0-21swapper/321:11:013
383694099570,38cyclictest362-21jbd2/sda2-800:25:073
383694099570,17cyclictest0-21swapper/322:40:093
383694099570,17cyclictest0-21swapper/322:28:533
383694099570,17cyclictest0-21swapper/320:34:053
383694099570,17cyclictest0-21swapper/320:34:053
383694099570,17cyclictest0-21swapper/320:16:283
3836940995638,18cyclictest0-21swapper/323:33:303
3836940995619,16cyclictest0-21swapper/300:20:373
3836940995537,18cyclictest0-21swapper/322:20:153
3836940995514,19cyclictest3951787-21latency_hist22:40:013
3836944995415,39cyclictest0-21swapper/722:55:147
3836940995434,20cyclictest0-21swapper/321:55:203
3836940995419,35cyclictest0-21swapper/322:15:273
3836940995414,39cyclictest0-21swapper/321:09:353
3836940995319,34cyclictest0-21swapper/319:41:143
3836940995319,15cyclictest0-21swapper/322:02:313
3836940995314,39cyclictest0-21swapper/320:25:313
3836940995314,39cyclictest0-21swapper/320:04:353
3836940995314,19cyclictest0-21swapper/323:40:203
3836940995314,18cyclictest0-21swapper/300:05:013
3836940995313,19cyclictest0-21swapper/323:10:053
3836938995313,20cyclictest0-21swapper/123:20:161
3836944995214,19cyclictest0-21swapper/700:15:157
3836940995233,19cyclictest0-21swapper/323:19:513
3836940995233,0cyclictest0-21swapper/322:32:073
3836940995214,19cyclictest0-21swapper/323:26:373
3836940995213,39cyclictest0-21swapper/321:46:033
3836940995213,39cyclictest0-21swapper/320:21:073
3836940995213,39cyclictest0-21swapper/320:10:093
3836940995213,39cyclictest0-21swapper/319:51:473
3836940995213,39cyclictest0-21swapper/300:32:463
3836944995112,39cyclictest0-21swapper/720:50:147
3836942995132,19cyclictest0-21swapper/500:20:155
3836940995133,18cyclictest0-21swapper/320:41:233
3836940995133,18cyclictest0-21swapper/320:41:223
3836940995133,18cyclictest0-21swapper/300:10:233
3836940995112,39cyclictest0-21swapper/321:17:393
3836940995112,39cyclictest0-21swapper/320:50:113
3836940995112,39cyclictest0-21swapper/320:48:433
3836940995112,39cyclictest0-21swapper/320:48:433
3836940995112,39cyclictest0-21swapper/300:38:393
3836940995111,39cyclictest3992520-21pmu-power23:50:213
3836940995111,19cyclictest0-21swapper/320:00:013
3836942995011,39cyclictest0-21swapper/520:55:165
3836941995012,19cyclictest0-21swapper/422:25:174
3836941995012,19cyclictest0-21swapper/400:10:144
383694099509,19cyclictest0-21swapper/320:10:013
3836940995032,18cyclictest0-21swapper/322:11:193
3836940995031,19cyclictest0-21swapper/319:31:033
3836940995012,2cyclictest0-21swapper/321:01:413
3836940995011,19cyclictest0-21swapper/321:51:093
3836937995012,19cyclictest0-21swapper/019:25:160
3836944994911,19cyclictest0-21swapper/720:10:167
383694099499,19cyclictest0-21swapper/319:30:013
3836940994910,39cyclictest0-21swapper/323:45:163
383694099489,39cyclictest0-21swapper/321:35:033
3836940994830,18cyclictest0-21swapper/323:20:183
3836940994830,18cyclictest0-21swapper/319:12:593
3836940994829,19cyclictest0-21swapper/323:55:553
3836940994829,19cyclictest0-21swapper/323:37:273
3836940994829,19cyclictest0-21swapper/319:21:113
3836940994810,19cyclictest0-21swapper/321:33:153
3836942994729,0cyclictest0-21swapper/522:45:155
383694099478,39cyclictest0-21swapper/319:18:493
383694099478,38cyclictest0-21swapper/322:55:193
3836940994627,19cyclictest0-21swapper/320:37:473
3836940994627,19cyclictest0-21swapper/320:37:473
383693899468,19cyclictest0-21swapper/119:20:171
383693799468,19cyclictest0-21swapper/019:50:130
3836940994527,18cyclictest0-21swapper/321:43:393
383693799456,19cyclictest0-21swapper/000:20:150
383694099433,19cyclictest0-21swapper/319:48:173
383693899436,18cyclictest0-21swapper/121:15:161
3836938994324,19cyclictest0-21swapper/120:55:161
383693799435,19cyclictest0-21swapper/022:15:140
383694199423,38cyclictest3963346-21kworker/u32:400:15:064
3836937994224,18cyclictest3987700-21kworker/0:1+ice00:30:140
3836937994224,18cyclictest0-21swapper/021:10:170
383694199412,39cyclictest3880341-21kworker/0:120:38:514
383694199412,39cyclictest3880341-21kworker/0:120:38:514
383693999411,39cyclictest0-21swapper/221:10:172
383694099401,38cyclictest0-21swapper/319:10:033
383694499391,19cyclictest0-21swapper/720:15:167
383694399390,0cyclictest0-21swapper/620:40:236
383694399390,0cyclictest0-21swapper/620:40:226
383694099390,18cyclictest0-21swapper/319:36:093
3836941993820,18cyclictest3948706-21kworker/u32:1+rpciod22:33:004
3836937993820,18cyclictest0-21swapper/021:00:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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