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2026-06-20 - 10:52
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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 Sat Jun 20, 2026 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3487317999898,0cyclictest3663621-21df_inode00:30:133
3487317997716,59cyclictest3523926-21grep20:15:153
3487317997132,39cyclictest0-21swapper/300:19:353
3487317997032,38cyclictest0-21swapper/323:39:593
3487317997031,39cyclictest0-21swapper/323:52:263
3487317996931,19cyclictest511ktimers/323:46:193
3487317996930,39cyclictest0-21swapper/322:34:153
348731799688,20cyclictest3602415-21sed22:40:003
3487317996831,18cyclictest0-21swapper/321:50:503
3487317996647,19cyclictest0-21swapper/320:30:013
3487317996647,19cyclictest0-21swapper/320:30:013
348731999655,19cyclictest0-21swapper/523:40:165
3487317996324,39cyclictest0-21swapper/322:22:233
348731799611,21cyclictest3580635-21sh22:00:013
3487317996042,18cyclictest0-21swapper/321:05:143
3487317995919,18cyclictest0-21swapper/321:40:013
348731799590,57cyclictest0-21swapper/323:00:143
3487317995819,17cyclictest0-21swapper/319:20:173
3487317995719,38cyclictest0-21swapper/323:16:383
3487317995718,39cyclictest1086-21runrttasks19:46:293
3487317995718,38cyclictest0-21swapper/300:10:223
3487317995618,38cyclictest0-21swapper/321:47:313
3487317995617,19cyclictest3563570-21taskset21:25:573
3487317995613,39cyclictest3500841-21latency_hist19:35:003
3487315995614,19cyclictest0-21swapper/122:15:141
3487317995519,15cyclictest0-21swapper/321:42:403
3487318995419,15cyclictest0-21swapper/419:30:164
3487317995419,34cyclictest0-21swapper/322:18:513
3487317995415,19cyclictest0-21swapper/321:30:523
3487317995414,39cyclictest0-21swapper/320:59:343
3487317995414,19cyclictest511ktimers/321:01:373
3487317995414,19cyclictest0-21swapper/321:16:333
348731799540,34cyclictest0-21swapper/321:10:113
3487317995334,0cyclictest0-21swapper/319:13:073
3487317995333,19cyclictest0-21swapper/320:31:193
3487317995332,21cyclictest0-21swapper/319:53:533
3487317995319,34cyclictest0-21swapper/300:21:473
3487317995319,15cyclictest0-21swapper/319:40:593
3487317995319,15cyclictest0-21swapper/319:17:353
3487317995314,39cyclictest0-21swapper/322:27:433
3487317995314,19cyclictest0-21swapper/320:52:493
3487317995314,19cyclictest0-21swapper/320:52:493
3487317995314,19cyclictest0-21swapper/320:35:283
3487317995313,39cyclictest0-21swapper/322:00:313
3487317995312,19cyclictest0-21swapper/323:23:333
3487317995312,19cyclictest0-21swapper/320:45:053
3487317995312,19cyclictest0-21swapper/320:45:053
3487323995214,19cyclictest0-21swapper/720:10:167
3487318995233,19cyclictest0-21swapper/400:15:164
3487318995214,38cyclictest0-21swapper/400:35:164
3487317995233,19cyclictest0-21swapper/322:53:113
3487317995233,19cyclictest0-21swapper/322:46:553
3487317995233,19cyclictest0-21swapper/322:14:593
3487317995233,19cyclictest0-21swapper/322:05:073
3487317995233,19cyclictest0-21swapper/321:22:113
3487317995233,19cyclictest0-21swapper/320:11:393
3487317995232,20cyclictest0-21swapper/319:57:133
3487317995232,19cyclictest3537370-21cpuspeed_turbos20:40:133
3487317995232,19cyclictest3537370-21cpuspeed_turbos20:40:123
3487317995232,19cyclictest0-21swapper/300:39:143
3487317995213,39cyclictest0-21swapper/300:07:553
3487317995213,19cyclictest0-21swapper/320:00:413
3487317995212,19cyclictest875-21mta-sts-daemon22:57:413
3487317995212,19cyclictest0-21swapper/320:20:093
3487317995211,19cyclictest0-21swapper/319:27:333
3487316995214,19cyclictest0-21swapper/219:15:152
3487316995213,19cyclictest191rcu_preempt23:35:162
3487317995133,18cyclictest3646772-21apt-get00:00:103
3487317995133,18cyclictest0-21swapper/323:42:073
3487317995133,18cyclictest0-21swapper/323:11:113
3487317995132,19cyclictest0-21swapper/323:56:233
3487317995132,19cyclictest0-21swapper/323:28:463
3487317995132,19cyclictest0-21swapper/323:05:593
3487317995132,19cyclictest0-21swapper/322:41:313
3487317995132,19cyclictest0-21swapper/319:37:193
3487317995131,20cyclictest0-21swapper/300:26:173
3487317995113,18cyclictest5150ktimers/320:05:443
3487317995111,19cyclictest0-21swapper/323:34:533
3487319995011,19cyclictest0-21swapper/521:45:145
3487318995011,38cyclictest0-21swapper/423:10:134
3487318994911,38cyclictest0-21swapper/422:20:144
3487314994911,19cyclictest0-21swapper/020:40:160
3487314994911,19cyclictest0-21swapper/020:40:150
3487316994810,38cyclictest0-21swapper/222:50:132
348732399479,19cyclictest0-21swapper/723:10:137
348731999479,19cyclictest0-21swapper/519:15:155
348731499466,39cyclictest0-21swapper/019:10:140
3487314994628,18cyclictest0-21swapper/023:40:160
348732399456,39cyclictest0-21swapper/719:30:167
348731999457,19cyclictest0-21swapper/520:25:165
348731999457,19cyclictest0-21swapper/520:25:165
348732399444,39cyclictest0-21swapper/722:15:457
348731899446,19cyclictest0-21swapper/422:10:154
348731899446,0cyclictest0-21swapper/421:45:154
348731699446,19cyclictest0-21swapper/220:40:162
348731699446,19cyclictest0-21swapper/220:40:162
3487316994426,18cyclictest0-21swapper/223:20:152
348731499446,19cyclictest0-21swapper/022:55:160
348732399435,19cyclictest0-21swapper/719:40:157
348732399424,19cyclictest0-21swapper/721:25:137
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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