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2026-07-11 - 20:27
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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 rackbslot7.osadl.org (updated Sat Jul 11, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
709521139,71sleep27155-21fschecks_time06:53:092
709521139,71sleep27155-21fschecks_time06:53:092
83459910756,13cyclictest181rcu_preempt11:52:291
8345999973,19cyclictest15962-21diskmemload11:57:371
8345999967,10cyclictest181rcu_preempt12:08:281
8353999776,10cyclictest22580-21kworker/u18:2+ext4-rsv-conversion10:57:442
834599952,68cyclictest17293-21runrttasks07:22:391
834599952,68cyclictest17293-21runrttasks07:22:391
76842957,57sleep07729-21sort06:53:280
76842957,57sleep07729-21sort06:53:280
8353999435,20cyclictest297-21systemd-logind07:57:162
8353999330,28cyclictest12554-21taskset08:45:252
8341999214,53cyclictest18804-21taskset11:42:200
8341999214,53cyclictest18804-21taskset11:42:200
8341999213,47cyclictest3808-21seq09:29:220
8341999213,47cyclictest3808-21seq09:29:220
8345999160,10cyclictest181rcu_preempt12:12:431
8353999031,26cyclictest28253-21seq10:09:482
8353999030,24cyclictest26906-21seq07:51:502
8341999064,13cyclictest23712-21sh07:42:150
8341999010,35cyclictest0-21swapper/011:08:220
8353998973,11cyclictest8332-21cyclictest11:47:372
8345998960,21cyclictest15298-21latency_hist07:17:181
8345998949,13cyclictest181rcu_preempt11:34:521
8345998949,13cyclictest181rcu_preempt11:34:521
8345998945,13cyclictest181rcu_preempt09:35:461
8345998939,22cyclictest28640-21cpuspeed09:17:331
8345998939,22cyclictest28640-21cpuspeed09:17:331
8345998867,8cyclictest181rcu_preempt12:18:151
8345998854,12cyclictest181rcu_preempt11:22:121
8345998849,15cyclictest181rcu_preempt08:47:491
8341998861,19cyclictest6160-21latency_hist08:27:170
8353998729,22cyclictest8752-21taskset11:24:502
8345998764,9cyclictest181rcu_preempt11:47:251
8345998762,8cyclictest181rcu_preempt09:09:441
8345998752,12cyclictest181rcu_preempt09:02:211
8345998746,8cyclictest181rcu_preempt09:22:501
8345998645,8cyclictest181rcu_preempt09:51:451
8345998645,17cyclictest181rcu_preempt08:05:151
8345998645,17cyclictest181rcu_preempt08:05:151
8353998526,22cyclictest1932-21taskset10:20:112
8353998526,22cyclictest1932-21taskset10:20:112
8345998551,15cyclictest181rcu_preempt07:57:501
8345998541,14cyclictest181rcu_preempt11:29:381
8345998535,12cyclictest0-21swapper/108:18:021
8345998535,12cyclictest0-21swapper/108:18:021
8345998534,28cyclictest0-21swapper/111:22:471
8341998511,48cyclictest26209-21taskset10:59:320
8353998448,27cyclictest0-21swapper/209:37:152
8353998419,26cyclictest0-21swapper/209:44:392
8353998419,26cyclictest0-21swapper/209:44:392
8345998464,7cyclictest181rcu_preempt07:52:261
8345998452,8cyclictest181rcu_preempt08:42:171
8345998452,8cyclictest181rcu_preempt08:42:171
8345998451,10cyclictest181rcu_preempt08:58:341
8345998444,17cyclictest181rcu_preempt07:40:161
8345998433,29cyclictest0-21swapper/111:02:401
8345998433,29cyclictest0-21swapper/111:02:401
8341998424,19cyclictest7467-21seq08:30:070
8341998424,19cyclictest7467-21seq08:30:070
8341998420,23cyclictest5345-21diskmemload09:32:350
8341998415,30cyclictest21751-21ssh09:58:270
8341998413,29cyclictest2248-21rm10:21:040
8341998413,29cyclictest2248-21rm10:21:040
8353998366,12cyclictest8332-21cyclictest10:27:362
8353998330,21cyclictest4665-21ssh11:17:492
8345998355,8cyclictest181rcu_preempt10:02:341
8345998355,8cyclictest181rcu_preempt10:02:341
8345998354,11cyclictest181rcu_preempt09:47:181
8345998354,11cyclictest181rcu_preempt09:47:181
8345998350,10cyclictest181rcu_preempt10:47:171
8345998348,13cyclictest181rcu_preempt11:07:491
8345998338,8cyclictest181rcu_preempt12:03:321
8345998337,11cyclictest0-21swapper/110:31:461
8345998329,34cyclictest0-21swapper/108:33:271
8345998329,34cyclictest0-21swapper/108:33:271
8345998324,22cyclictest0-21swapper/108:22:421
8341998316,27cyclictest18589-21ssh09:53:000
8341998316,27cyclictest18589-21ssh09:53:000
8341998313,25cyclictest0-21swapper/009:41:550
8353998232,24cyclictest29961-21seq12:00:522
8353998225,22cyclictest352-21runrttasks10:39:222
8345998252,10cyclictest181rcu_preempt10:17:401
8345998252,10cyclictest181rcu_preempt10:17:401
8345998248,8cyclictest181rcu_preempt12:24:391
8345998246,13cyclictest181rcu_preempt09:52:481
8345998246,13cyclictest181rcu_preempt09:52:481
8345998244,15cyclictest181rcu_preempt11:37:401
8345998239,19cyclictest181rcu_preempt10:32:521
8345998239,19cyclictest181rcu_preempt10:32:521
8345998234,24cyclictest0-21swapper/107:47:301
8345998222,17cyclictest0-21swapper/108:08:371
8341998211,29cyclictest3871-21seq12:11:210
8353998129,19cyclictest18512-21taskset09:00:212
8353998126,23cyclictest352-21runrttasks11:55:172
8353998122,25cyclictest4536-21ssh12:12:302
8353998122,24cyclictest16724-21runrttasks07:21:532
8345998135,16cyclictest8332-21cyclictest10:08:451
8345998129,29cyclictest0-21swapper/109:13:431
8345998128,29cyclictest0-21swapper/107:32:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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