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2026-04-25 - 15:52
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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 rack0slot5.osadl.org (updated Sat Apr 25, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1755969955532,522cyclictest0-21swapper/1400:24:506
1755459951526,488cyclictest0-21swapper/222:51:508
17557399509508,1cyclictest236632-21kworker/9:2+i915-unordered20:26:5015
1755459950538,466cyclictest0-21swapper/219:19:508
1755459950538,466cyclictest0-21swapper/219:19:508
17557399492491,1cyclictest0-21swapper/921:06:5015
1755389948913,475cyclictest0-21swapper/022:01:500
1755389948913,475cyclictest0-21swapper/022:01:500
175583994847,58cyclictest0-21swapper/1120:10:133
17555999482482,0cyclictest0-21swapper/519:52:5011
1755509948153,426cyclictest421697-21kworker/3:0+i915-unordered00:25:509
1755659947518,59cyclictest0-21swapper/700:10:1213
1755429947524,30cyclictest0-21swapper/123:24:111
1755969947224,29cyclictest0-21swapper/1419:48:126
1755789947128,28cyclictest0-21swapper/1021:21:502
17555999470469,0cyclictest204390-21kworker/5:1+i915-unordered19:42:5011
1755969946922,30cyclictest0-21swapper/1422:15:136
175538994686,461cyclictest0-21swapper/019:50:500
175538994673,463cyclictest0-21swapper/020:39:500
17553899466465,1cyclictest0-21swapper/020:26:500
17556199462462,0cyclictest0-21swapper/622:01:5012
17556199462462,0cyclictest0-21swapper/622:01:5012
1755549946117,29cyclictest0-21swapper/422:15:5010
17560199459458,1cyclictest26550irq/134-xhci_hcd20:23:127
175538994590,459cyclictest0-21swapper/019:42:500
1755889945817,30cyclictest0-21swapper/1223:54:114
175583994575,30cyclictest0-21swapper/1121:32:113
17553899456455,1cyclictest0-21swapper/021:06:500
175538994562,30cyclictest0-21swapper/022:26:120
175538994559,30cyclictest0-21swapper/023:28:350
175601994539,443cyclictest0-21swapper/1523:11:507
175588994530,28cyclictest0-21swapper/1221:47:114
175538994527,29cyclictest0-21swapper/023:31:350
175583994500,29cyclictest0-21swapper/1123:07:343
175588994491,30cyclictest0-21swapper/1222:59:114
175538994492,29cyclictest0-21swapper/020:21:130
175596994485,30cyclictest0-21swapper/1420:33:346
1755889944725,420cyclictest0-21swapper/1223:40:114
17555099447445,1cyclictest316981-21kworker/3:1+i915-unordered22:10:509
1755969944623,28cyclictest0-21swapper/1420:24:346
175583994466,436cyclictest0-21swapper/1123:14:123
17555099446443,2cyclictest263538-21kworker/u64:10+events_unbound21:09:509
17558399445444,1cyclictest69750irq/159-i91500:25:503
17557399445442,2cyclictest212597-21kworker/9:0+i915-unordered19:54:1315
1755509944526,418cyclictest0-21swapper/320:14:129
1755459944523,421cyclictest0-21swapper/221:09:118
175545994450,27cyclictest191rcu_preempt21:48:458
1755969944424,418cyclictest0-21swapper/1420:45:346
1755889944425,418cyclictest0-21swapper/1221:08:454
175573994440,30cyclictest0-21swapper/922:48:4515
1755509944462,0cyclictest381346-21kworker/3:2+i915-unordered23:29:509
1755459944423,420cyclictest0-21swapper/222:19:128
1755549944324,416cyclictest296085-21processes21:34:1210
1755459944322,420cyclictest0-21swapper/222:40:138
1755459944321,421cyclictest0-21swapper/200:34:128
1755389944322,420cyclictest0-21swapper/020:36:120
1755889944221,420cyclictest0-21swapper/1223:32:134
1755889944220,421cyclictest0-21swapper/1222:29:364
17555499442438,3cyclictest1818-21snmpd21:18:0310
1755509944221,420cyclictest0-21swapper/320:01:119
1755459944221,420cyclictest0-21swapper/221:06:148
1755889944121,416cyclictest0-21swapper/1222:03:454
1755889944121,416cyclictest0-21swapper/1222:03:454
17557399441438,2cyclictest319858-21kworker/u64:9+events_unbound22:04:3215
17557399441438,2cyclictest319858-21kworker/u64:9+events_unbound22:04:3215
1755659944123,416cyclictest0-21swapper/722:10:3513
1755599944126,415cyclictest0-21swapper/520:12:5011
175559994410,29cyclictest0-21swapper/523:37:5011
1755389944120,419cyclictest0-21swapper/020:00:130
1755599944023,417cyclictest0-21swapper/523:51:5011
1755459944016,29cyclictest0-21swapper/222:31:508
1755459943919,419cyclictest0-21swapper/219:46:358
1755459943918,420cyclictest0-21swapper/220:13:358
1755459943917,421cyclictest0-21swapper/219:43:348
1755429943918,420cyclictest0-21swapper/119:57:321
1755429943917,421cyclictest0-21swapper/122:58:331
1755429943917,421cyclictest0-21swapper/121:13:121
17557899438438,0cyclictest353350-21kworker/10:1+i915-unordered22:51:502
1755789943828,409cyclictest0-21swapper/1020:36:502
1755509943819,418cyclictest0-21swapper/320:12:129
1755459943819,418cyclictest0-21swapper/221:37:338
1755459943818,419cyclictest0-21swapper/221:40:348
1755459943816,421cyclictest0-21swapper/222:48:118
1755459943816,421cyclictest0-21swapper/220:02:358
1755459943816,421cyclictest0-21swapper/219:29:138
1755429943817,420cyclictest0-21swapper/122:22:311
1755429943816,421cyclictest0-21swapper/119:24:351
1755889943718,417cyclictest0-21swapper/1222:27:114
1755889943711,30cyclictest0-21swapper/1221:50:114
1755459943716,420cyclictest0-21swapper/221:27:138
1755459943715,421cyclictest0-21swapper/220:35:128
1755429943713,421cyclictest0-21swapper/120:56:121
17553899437436,0cyclictest0-21swapper/021:55:500
175592994369,30cyclictest0-21swapper/1319:41:115
175569994360,435cyclictest0-21swapper/800:14:1314
17555999436435,1cyclictest0-21swapper/519:56:0111
1755929943521,413cyclictest0-21swapper/1323:05:505
1755889943522,412cyclictest0-21swapper/1219:49:504
1755839943513,421cyclictest0-21swapper/1123:30:123
1755839943513,419cyclictest0-21swapper/1122:38:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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