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2026-05-16 - 23:36
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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 rackcslot8.osadl.org (updated Sat May 16, 2026 12:49:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912790,271ptp4l0-21swapper/107:05:121
330891240232,6phc2sys0-21swapper/207:06:1212
1054699201142,1cyclictest151rcu_preempt10:40:2430
10611991713,121cyclictest0-21swapper/1710:48:599
106809916624,19cyclictest0-21swapper/2712:03:2720
106809916324,137cyclictest0-21swapper/2708:15:1420
105609916016,111cyclictest0-21swapper/1012:07:422
106809914919,126cyclictest151rcu_preempt12:30:1120
10680991477,121cyclictest151rcu_preempt10:07:2920
10680991477,121cyclictest151rcu_preempt10:07:2820
10619991440,66cyclictest0-21swapper/1812:01:4310
10680991430,85cyclictest0-21swapper/2707:45:2020
10619991430,85cyclictest0-21swapper/1810:45:1710
106119914346,59cyclictest0-21swapper/1709:38:279
106119914346,59cyclictest0-21swapper/1709:38:279
105609914216,123cyclictest151rcu_preempt10:45:412
106119914155,63cyclictest0-21swapper/1709:42:449
106119914155,63cyclictest0-21swapper/1709:42:449
106119914148,59cyclictest0-21swapper/1709:55:229
106119914148,59cyclictest0-21swapper/1709:55:219
106119914141,64cyclictest0-21swapper/1711:02:229
10611991410,82cyclictest0-21swapper/1711:21:359
10619991400,84cyclictest0-21swapper/1811:40:5110
106119914056,56cyclictest0-21swapper/1708:27:239
106119914051,56cyclictest0-21swapper/1712:07:019
10611991400,82cyclictest0-21swapper/1709:31:309
10611991400,82cyclictest0-21swapper/1709:31:299
105779914018,80cyclictest25211-21latency_hist09:05:024
105779914018,80cyclictest25211-21latency_hist09:05:014
10619991390,80cyclictest0-21swapper/1810:21:4610
106119913951,58cyclictest0-21swapper/1707:50:309
106119913940,62cyclictest0-21swapper/1708:40:449
106119913929,71cyclictest0-21swapper/1707:38:439
106119913929,69cyclictest0-21swapper/1711:38:109
10611991390,84cyclictest0-21swapper/1712:20:399
10611991390,83cyclictest0-21swapper/1709:04:469
10611991390,83cyclictest0-21swapper/1709:04:469
10611991390,82cyclictest0-21swapper/1711:50:289
106119913843,67cyclictest0-21swapper/1708:16:429
106119913830,67cyclictest0-21swapper/1707:24:069
10611991380,85cyclictest0-21swapper/1712:16:079
10611991380,80cyclictest0-21swapper/1712:33:149
10611991380,79cyclictest0-21swapper/1711:25:209
10611991380,79cyclictest0-21swapper/1709:05:199
10611991380,79cyclictest0-21swapper/1709:05:199
105779913848,64cyclictest0-21swapper/1210:40:434
10560991389,95cyclictest151rcu_preempt11:33:152
107119913728,68cyclictest151rcu_preempt07:20:1925
106199913728,70cyclictest0-21swapper/1809:29:5510
106199913728,70cyclictest0-21swapper/1809:29:5410
106119913728,68cyclictest0-21swapper/1711:59:339
10611991370,80cyclictest0-21swapper/1712:36:269
10611991370,77cyclictest0-21swapper/1712:11:039
106199913630,67cyclictest0-21swapper/1810:36:1210
106199913627,69cyclictest0-21swapper/1812:32:4310
10619991360,84cyclictest0-21swapper/1812:12:2310
106119913641,58cyclictest0-21swapper/1708:35:089
106119913628,66cyclictest0-21swapper/1711:49:569
106199913546,53cyclictest0-21swapper/1811:27:3010
106199913530,65cyclictest0-21swapper/1808:44:2910
106199913527,78cyclictest0-21swapper/1809:57:1110
106199913527,78cyclictest0-21swapper/1809:57:1010
106119913532,65cyclictest0-21swapper/1711:14:079
106119913528,68cyclictest0-21swapper/1711:33:229
10611991350,84cyclictest0-21swapper/1710:54:209
10626991340,81cyclictest0-21swapper/1909:26:1111
10626991340,81cyclictest0-21swapper/1909:26:1111
106199913441,58cyclictest0-21swapper/1809:41:3910
106199913441,58cyclictest0-21swapper/1809:41:3910
106119913451,64cyclictest0-21swapper/1711:20:009
106119913450,65cyclictest0-21swapper/1709:24:339
106119913450,65cyclictest0-21swapper/1709:24:329
106119913444,57cyclictest0-21swapper/1710:11:039
106119913426,65cyclictest0-21swapper/1709:19:139
106119913426,65cyclictest0-21swapper/1709:19:139
10611991340,79cyclictest0-21swapper/1707:10:259
10611991340,78cyclictest0-21swapper/1708:56:469
10611991340,78cyclictest0-21swapper/1708:56:469
10550991340,81cyclictest0-21swapper/908:20:2431
10550991340,72cyclictest0-21swapper/912:02:0631
106199913330,77cyclictest0-21swapper/1810:13:1310
106199913325,105cyclictest0-21swapper/1811:55:1810
106199913317,82cyclictest8560-21taskset10:41:4810
106119913356,61cyclictest0-21swapper/1708:12:249
106119913349,64cyclictest0-21swapper/1710:22:489
105779913327,66cyclictest0-21swapper/1209:49:244
105779913327,66cyclictest0-21swapper/1209:49:244
105779913324,62cyclictest0-21swapper/1210:56:254
106199913239,62cyclictest0-21swapper/1810:27:0610
106199913229,77cyclictest0-21swapper/1811:01:1810
106119913260,63cyclictest0-21swapper/1708:03:529
106119913239,65cyclictest0-21swapper/1710:34:009
106119913232,65cyclictest0-21swapper/1712:25:139
106119913229,65cyclictest0-21swapper/1711:41:549
105779913242,62cyclictest0-21swapper/1209:25:214
105779913242,62cyclictest0-21swapper/1209:25:214
105779913231,69cyclictest0-21swapper/1212:33:294
105609913259,52cyclictest0-21swapper/1009:30:512
105609913259,52cyclictest0-21swapper/1009:30:512
106269913133,44cyclictest0-21swapper/1907:40:2211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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