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2026-03-11 - 04:44
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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 all highest latencies:
System rackbslot7.osadl.org (updated Wed Mar 11, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2771822890,104sleep2200-21systemd-journal19:05:302
2771822890,104sleep2200-21systemd-journal19:05:302
27963991194,77cyclictest14734-21apt-get20:00:440
27963991194,77cyclictest14734-21apt-get20:00:440
27963991194,77cyclictest14734-21apt-get20:00:440
27963991178,92cyclictest3747-21apt-get21:05:500
2747921146,16sleep00-21swapper/019:02:310
2747921146,16sleep00-21swapper/019:02:310
26736211311,70sleep126754-21kernelversion19:01:011
26736211311,70sleep126754-21kernelversion19:01:011
27963991042,81cyclictest3743-21diskmemload23:20:470
27963999976,8cyclictest181rcu_preempt22:20:320
27997999753,35cyclictest32560-21modprobe00:35:292
27997999753,35cyclictest32560-21modprobe00:35:292
2796399953,64cyclictest1-21systemd23:55:300
27997999355,8cyclictest181rcu_preempt21:55:492
2799799925,70cyclictest19548-21apt-get20:15:442
2799799925,70cyclictest19548-21apt-get20:15:442
27997999138,17cyclictest181rcu_preempt00:00:252
27997999047,8cyclictest181rcu_preempt22:05:332
27997999047,8cyclictest181rcu_preempt22:05:332
27997998854,9cyclictest181rcu_preempt21:30:212
27997998846,11cyclictest27944-21cyclictest21:14:032
2796399883,62cyclictest26239-21apt-get20:35:450
2799799875,44cyclictest39-21ksoftirqd/221:54:242
27997998749,9cyclictest181rcu_preempt23:26:002
2796399872,66cyclictest16001-21kworker/u17:0+ext4-rsv-conversion19:31:020
2796399872,66cyclictest16001-21kworker/u17:0+ext4-rsv-conversion19:31:020
27997998666,13cyclictest29824-21latency_hist23:35:492
27997998650,12cyclictest181rcu_preempt19:35:522
27997998635,13cyclictest181rcu_preempt00:03:532
27997998612,61cyclictest20740-21apt-get23:20:452
27975998671,10cyclictest27944-21cyclictest22:48:081
2796399869,33cyclictest15-21ksoftirqd/021:50:490
27963998648,11cyclictest181rcu_preempt22:29:120
27997998538,15cyclictest181rcu_preempt19:25:502
27975998512,34cyclictest352-21runrttasks23:33:331
27963998552,12cyclictest0-21swapper/022:40:500
27963998551,12cyclictest181rcu_preempt20:54:030
27963998535,11cyclictest181rcu_preempt22:08:260
27997998437,15cyclictest181rcu_preempt23:43:542
27963998448,7cyclictest181rcu_preempt00:15:050
2796399843,46cyclictest20072-21apt-get20:15:440
2796399843,46cyclictest20072-21apt-get20:15:440
27997998360,8cyclictest181rcu_preempt21:16:562
27997998356,19cyclictest31154-21kworker/u18:0+events_unbound20:55:292
27997998355,9cyclictest181rcu_preempt21:30:542
27997998347,8cyclictest181rcu_preempt23:03:402
27997998345,9cyclictest181rcu_preempt22:09:152
27997998341,21cyclictest27944-21cyclictest22:30:502
2799799833,55cyclictest14236-21apt-get20:00:442
2799799833,55cyclictest14236-21apt-get20:00:442
2799799833,55cyclictest14236-21apt-get20:00:442
2799799832,48cyclictest39-21ksoftirqd/222:24:422
2799799832,48cyclictest39-21ksoftirqd/222:24:422
27975998364,13cyclictest277-21dbus-daemon20:10:311
27963998345,19cyclictest181rcu_preempt00:23:350
27963998344,13cyclictest181rcu_preempt23:36:140
27963998344,13cyclictest181rcu_preempt23:36:140
27997998250,11cyclictest181rcu_preempt21:23:432
27997998250,11cyclictest181rcu_preempt21:23:432
27997998246,8cyclictest181rcu_preempt21:50:322
27997998238,22cyclictest21240-21ssh00:15:502
27997998238,22cyclictest21240-21ssh00:15:502
27997998230,11cyclictest181rcu_preempt00:11:092
27975998222,12cyclictest0-21swapper/119:05:441
27963998221,16cyclictest0-21swapper/021:25:330
27963998221,16cyclictest0-21swapper/021:25:330
27975998120,31cyclictest0-21swapper/123:15:291
27963998148,13cyclictest181rcu_preempt20:06:300
27963998135,9cyclictest181rcu_preempt19:28:080
27963998126,8cyclictest181rcu_preempt00:27:490
27963998126,41cyclictest0-21swapper/023:46:040
27963998126,41cyclictest0-21swapper/023:46:040
27997998046,15cyclictest181rcu_preempt23:40:232
27997998046,15cyclictest181rcu_preempt23:40:232
2799799804,45cyclictest26360-21ssh22:36:042
27997998039,12cyclictest181rcu_preempt21:36:422
27975998064,10cyclictest8790-21idleruntime-cro23:55:291
27975998014,26cyclictest22911-21seq20:24:141
27963998059,13cyclictest3743-21diskmemload22:51:210
27963998053,14cyclictest0-21swapper/022:25:330
27963998053,14cyclictest0-21swapper/022:25:330
27963998051,9cyclictest181rcu_preempt22:59:200
27963998050,9cyclictest181rcu_preempt21:30:450
27963998042,18cyclictest181rcu_preempt22:03:450
27963998042,18cyclictest181rcu_preempt22:03:450
27963998039,18cyclictest181rcu_preempt21:14:590
27963998039,11cyclictest181rcu_preempt21:15:500
27997997957,8cyclictest181rcu_preempt22:12:392
27997997947,10cyclictest181rcu_preempt20:30:312
27997997939,18cyclictest181rcu_preempt23:48:102
27997997939,18cyclictest181rcu_preempt23:48:102
27997997935,12cyclictest181rcu_preempt00:08:372
2799799792,39cyclictest39-21ksoftirqd/220:31:412
27975997954,18cyclictest19546-21modprobe20:15:291
27975997954,18cyclictest19546-21modprobe20:15:291
27975997943,29cyclictest13029-21kworker/u18:1+nfsiod22:25:121
27975997943,29cyclictest13029-21kworker/u18:1+nfsiod22:25:121
27963997958,15cyclictest544-21cron19:55:290
27963997958,14cyclictest27944-21cyclictest21:45:290
27963997954,13cyclictest181rcu_preempt21:00:470
27963997948,11cyclictest181rcu_preempt00:06:060
27963997933,12cyclictest181rcu_preempt20:35:340
2801499782,61cyclictest18280-21chrt20:11:003
2801499782,61cyclictest18280-21chrt20:11:003
27997997840,10cyclictest181rcu_preempt20:05:512
27997997838,13cyclictest181rcu_preempt22:46:192
27997997833,9cyclictest181rcu_preempt19:20:302
27975997826,16cyclictest0-21swapper/121:11:041
27975997814,25cyclictest16507-21seq22:20:141
27975997812,22cyclictest3412-21seq21:57:161
27963997857,12cyclictest26209-21apt-get22:36:020
27963997854,9cyclictest13691-21ssh23:09:010
2796399785,15cyclictest405-21grep23:40:500
27963997846,15cyclictest181rcu_preempt21:35:450
27963997840,12cyclictest181rcu_preempt20:21:030
27963997836,27cyclictest181rcu_preempt23:35:390
27997997740,14cyclictest181rcu_preempt21:41:282
27997997737,12cyclictest181rcu_preempt22:19:162
27997997733,14cyclictest181rcu_preempt20:46:062
27997997729,21cyclictest0-21swapper/219:11:092
2799799772,42cyclictest39-21ksoftirqd/219:56:522
27975997725,17cyclictest866-21seq19:17:511
27975997722,12cyclictest0-21swapper/100:17:341
27975997722,12cyclictest0-21swapper/100:17:341
27975997710,25cyclictest0-21swapper/122:13:331
27963997753,8cyclictest181rcu_preempt23:25:550
27963997752,8cyclictest181rcu_preempt22:30:460
27963997748,19cyclictest11457-21ssh23:59:360
27963997735,13cyclictest181rcu_preempt22:46:110
27997997643,12cyclictest181rcu_preempt23:50:472
27997997633,7cyclictest181rcu_preempt23:18:242
2799799762,31cyclictest39-21ksoftirqd/219:44:262
27975997614,22cyclictest28099-21seq22:38:221
27963997654,14cyclictest3743-21diskmemload00:19:190
27963997654,14cyclictest3743-21diskmemload00:19:190
27963997649,20cyclictest2207-21latency_hist21:00:320
27963997646,11cyclictest181rcu_preempt21:46:000
27963997625,41cyclictest0-21swapper/019:20:510
27997997531,8cyclictest181rcu_preempt22:25:352
27997997527,12cyclictest0-21swapper/200:28:262
27975997521,20cyclictest7315-21sh22:57:431
27975997512,29cyclictest19313-21seq21:30:421
27963997553,15cyclictest27944-21cyclictest23:00:550
27963997544,10cyclictest181rcu_preempt20:11:010
27963997544,10cyclictest181rcu_preempt20:11:010
2796399752,35cyclictest10889-21basename22:10:410
2799799746,35cyclictest39-21ksoftirqd/220:58:082
27997997454,14cyclictest5180-21mailstats21:06:292
27997997426,14cyclictest0-21swapper/222:59:512
27975997459,10cyclictest27944-21cyclictest21:49:481
27975997455,11cyclictest0-21swapper/100:30:441
27975997455,11cyclictest0-21swapper/100:30:441
27975997421,38cyclictest29921-21cut19:10:361
27975997411,23cyclictest30306-21seq22:41:131
27963997458,10cyclictest17192-21modprobe23:15:280
27963997450,10cyclictest12083-21/usr/sbin/munin00:00:510
27963997449,10cyclictest181rcu_preempt00:35:330
27963997431,9cyclictest181rcu_preempt21:25:570
2796399743,15cyclictest27722-21apt-get19:05:540
2799799738,34cyclictest39-21ksoftirqd/220:42:362
27997997348,9cyclictest181rcu_preempt20:36:192
27997997335,15cyclictest181rcu_preempt23:14:592
27997997333,18cyclictest181rcu_preempt21:05:302
27997997331,13cyclictest181rcu_preempt22:53:512
2797599739,28cyclictest0-21swapper/123:40:421
2797599733,56cyclictest20719-21/usr/sbin/munin23:21:461
27963997335,13cyclictest181rcu_preempt00:32:510
27963997334,17cyclictest181rcu_preempt19:35:520
27963997333,30cyclictest0-21swapper/020:50:320
2801499723,44cyclictest0-21swapper/320:01:013
2801499723,44cyclictest0-21swapper/320:01:013
2801499723,44cyclictest0-21swapper/320:01:013
27997997249,17cyclictest23030-21munin-plugin-st20:25:312
27997997238,15cyclictest181rcu_preempt23:06:442
27997997232,13cyclictest181rcu_preempt00:20:462
2797599726,31cyclictest352-21runrttasks22:26:451
27975997257,8cyclictest0-21swapper/123:55:521
27975997226,11cyclictest0-21swapper/121:16:171
27975997220,26cyclictest0-21swapper/122:10:281
27975997219,18cyclictest0-21swapper/121:41:101
27975997215,24cyclictest0-21swapper/119:40:291
27975997212,27cyclictest352-21runrttasks23:05:411
27963997235,12cyclictest181rcu_preempt21:59:300
27963997230,33cyclictest0-21swapper/020:00:320
27997997138,12cyclictest181rcu_preempt19:32:402
27997997138,12cyclictest181rcu_preempt19:32:402
27963997148,15cyclictest0-21swapper/020:26:070
27963997141,12cyclictest181rcu_preempt19:10:340
27997997045,8cyclictest181rcu_preempt19:51:212
27997997042,10cyclictest181rcu_preempt22:40:452
27997997041,13cyclictest181rcu_preempt20:11:472
27997997041,13cyclictest181rcu_preempt20:11:472
2799799702,33cyclictest39-21ksoftirqd/219:48:482
2797599709,26cyclictest12419-21seq19:53:271
2797599706,28cyclictest0-21swapper/121:09:471
27975997054,11cyclictest5162-21fschecks_time22:00:511
27975997054,11cyclictest5162-21fschecks_time22:00:511
27975997048,16cyclictest544-21cron21:00:301
27975997048,16cyclictest0-21swapper/119:45:321
27975997044,16cyclictest16898-21ntp_kernel_pll_21:25:571
2797599703,35cyclictest31365-21runrttasks20:50:301
2797599702,52cyclictest14734-21apt-get20:01:041
2797599702,52cyclictest14734-21apt-get20:01:041
2797599702,52cyclictest14734-21apt-get20:01:041
27975997020,12cyclictest0-21swapper/100:11:061
27963997050,14cyclictest9540-21latency_hist19:45:320
27963997035,9cyclictest15350irq/295-2188000.ethernet23:15:510
2801499696,43cyclictest0-21swapper/322:36:483
2799799693,44cyclictest2178-21timerwakeupswit19:21:052
27997996928,7cyclictest0-21swapper/219:06:142
2797599699,29cyclictest20233-21apt-config23:20:301
2797599698,34cyclictest352-21runrttasks19:57:201
2797599696,49cyclictest4299-21apt-get19:30:451
2797599696,49cyclictest4299-21apt-get19:30:451
2797599696,26cyclictest0-21swapper/123:45:471
2797599696,26cyclictest0-21swapper/123:45:471
2797599694,47cyclictest2644-21fschecks_time21:00:511
27975996925,8cyclictest0-21swapper/100:26:041
27975996925,11cyclictest0-21swapper/120:50:531
27975996913,25cyclictest352-21runrttasks21:51:201
27975996912,22cyclictest10706-21seq19:47:031
2797599689,23cyclictest24490-21seq20:28:511
27975996853,10cyclictest27944-21cyclictest19:25:401
2797599683,37cyclictest13532-21fschecks_count21:20:501
2797599683,37cyclictest13532-21fschecks_count21:20:501
2797599682,46cyclictest23068-21processes21:36:131
27975996822,8cyclictest0-21swapper/100:21:051
27975996812,13cyclictest0-21swapper/123:36:581
27975996812,13cyclictest0-21swapper/123:36:581
2796399682,29cyclictest29744-21awk20:45:290
2801499678,47cyclictest20809-21taskset23:20:523
2797599674,27cyclictest0-21swapper/120:40:561
2797599671,32cyclictest0-21swapper/122:50:471
2796399674,47cyclictest32192-21apt-get19:15:530
27963996739,9cyclictest181rcu_preempt19:49:120
2801499666,40cyclictest0-21swapper/321:05:553
2801499662,50cyclictest4835-21chrt19:31:073
2801499662,50cyclictest4835-21chrt19:31:073
2797599666,25cyclictest10787-21runrttasks23:04:111
2797599663,40cyclictest26963-21diskstats20:36:181
2797599663,35cyclictest17722-21grep00:10:291
27975996621,11cyclictest0-21swapper/120:16:081
27975996621,11cyclictest0-21swapper/120:16:081
27975996616,18cyclictest0-21swapper/123:29:061
27975996613,24cyclictest26008-21seq20:32:441
27975996611,23cyclictest14087-21ssh00:03:401
27975996510,24cyclictest2535-21seq19:23:381
27975996419,12cyclictest24049-21users22:31:071
2801499632,49cyclictest32273-21chrt19:16:373
2801499598,36cyclictest200852sleep320:15:463
2801499598,36cyclictest200852sleep320:15:463
2801499573,40cyclictest18023-21chrt00:10:403
2801499553,37cyclictest29869-21chrt23:35:553
2801499546,32cyclictest0-21swapper/320:35:503
2801499543,34cyclictest2454-21chrt21:00:463
2801499534,37cyclictest19669-21chrt22:25:323
2801499534,37cyclictest19669-21chrt22:25:323
2801499533,37cyclictest8794-21chrt23:55:293
2801499533,37cyclictest28074-21chrt19:05:353
2801499533,37cyclictest28074-21chrt19:05:353
2801499533,35cyclictest10194-21chrt21:15:333
2801499533,33cyclictest19206-21taskset21:30:333
2801499532,42cyclictest25571-21taskset23:28:173
2801499523,38cyclictest8180-21chrt19:40:473
2801499522,37cyclictest25794-21chrt21:40:543
2801499513,32cyclictest28330-21taskset21:45:403
2801499512,37cyclictest22172-21chrt22:29:123
2801499504,34cyclictest23011-21taskset21:36:083
2801499503,35cyclictest8297-21chrt23:00:293
2801499503,33cyclictest32337-21chrt23:40:293
2801499503,33cyclictest32337-21chrt23:40:293
2801499503,33cyclictest31331-21taskset20:50:293
2801499503,33cyclictest2733-21chrt19:25:323
2801499503,31cyclictest317-21chrt00:35:323
2801499503,31cyclictest317-21chrt00:35:323
2801499503,30cyclictest4720-21chrt19:30:343
2801499502,36cyclictest12886-21chrt19:55:413
2801499502,35cyclictest12362-21chrt21:18:453
2801499502,34cyclictest15322-21chrt00:05:503
2801499493,37cyclictest27307-21chrt00:25:523
2801499493,34cyclictest16024-21taskset21:25:303
2801499493,34cyclictest16024-21taskset21:25:303
2801499493,33cyclictest16660-21chrt20:06:183
2801499492,35cyclictest5200-21taskset22:55:143
2801499492,27cyclictest24887-21taskset20:30:413
2801499483,35cyclictest23695-21chrt00:20:293
2801499483,35cyclictest23695-21chrt00:20:293
2801499483,34cyclictest10494-21chrt19:46:053
2801499483,31cyclictest6325-21chrt22:02:013
2801499483,31cyclictest6325-21chrt22:02:013
2801499483,31cyclictest10736-21taskset23:04:023
2801499483,28cyclictest28436-21taskset20:40:453
2801499482,36cyclictest22058-21chrt20:20:533
2801499482,35cyclictest13916-21chrt00:03:113
2801499473,36cyclictest5453-21taskset23:49:293
2801499473,36cyclictest5453-21taskset23:49:293
2801499473,35cyclictest15808-21taskset23:11:363
2801499473,34cyclictest25065-21chrt00:21:063
2801499473,34cyclictest1254-21chrt22:47:283
2801499473,32cyclictest32764-21chrt23:40:453
2801499473,30cyclictest24186-21chrt20:26:073
2801499463,34cyclictest30697-21chrt19:10:583
2801499463,34cyclictest12033-21chrt22:11:133
2801499463,30cyclictest3532-21chrt21:57:363
2801499462,35cyclictest29826-21taskset22:41:003
2801499462,34cyclictest12730-21chrt23:06:173
28014994510,24cyclictest0-21swapper/319:05:543
2801499443,32cyclictest8038-21chrt22:05:463
2801499443,26cyclictest917-21kworker/3:1+events22:30:393
2801499433,32cyclictest917-21kworker/3:1+events21:51:163
2801499433,31cyclictest15089-21chrt22:16:163
2801499433,29cyclictest18601-21taskset23:16:063
2801499413,29cyclictest9471-21taskset23:55:533
2801499413,26cyclictest6411-21taskset19:35:363
2801499413,26cyclictest31601-21taskset20:50:413
2801499393,27cyclictest19494-21chrt21:30:493
2801499393,24cyclictest11258-21chrt19:50:433
2801499372,23cyclictest751-21chrt20:55:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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