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2026-04-05 - 09:48
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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 highest latencies:
System rackbslot7.osadl.org (updated Sun Apr 05, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3585211612,69sleep03603-21unin-run19:03:520
3585211612,69sleep03603-21unin-run19:03:520
3680991154,81cyclictest12262-21apt-get21:59:100
3696991143,80cyclictest1266-21apt-get23:29:042
729121110,6sleep30-21swapper/322:44:513
36889910828,40cyclictest0-21swapper/119:58:551
3680991083,12cyclictest16629-21munin-run23:53:500
3680991055,79cyclictest5239-21kworker/u18:0+ext4-rsv-conversion23:29:120
3680991053,43cyclictest27408-21apt-get20:14:040
36809910063,30cyclictest20989-21unixbench_multi23:59:270
368099988,81cyclictest8024-21apt-get23:39:040
368099985,75cyclictest7122-21kworker/u19:2+flush-179:022:44:060
369699974,81cyclictest6985-21apt-get22:44:062
3688999476,13cyclictest14441-21latency23:49:161
3688999430,38cyclictest0-21swapper/121:06:221
3680999317,20cyclictest0-21swapper/021:09:340
3688999152,33cyclictest17200-21idleruntime-cro19:43:501
3688999135,34cyclictest0-21swapper/121:54:471
3688999127,40cyclictest0-21swapper/100:00:021
368099916,72cyclictest21577-21apt-get23:09:040
368099916,72cyclictest21577-21apt-get23:09:040
3680999132,17cyclictest181rcu_preempt20:24:080
3680999056,26cyclictest0-21swapper/000:33:520
3680999046,12cyclictest181rcu_preempt23:44:170
3696998914,56cyclictest7483-21apt-get23:39:042
33302897,63sleep20-21swapper/219:01:132
33302897,63sleep20-21swapper/219:01:132
368899882,75cyclictest0-21swapper/121:29:061
3680998846,21cyclictest181rcu_preempt21:44:080
368899875,75cyclictest0-21swapper/121:09:021
3688998744,37cyclictest6425-21cron22:43:491
3688998744,37cyclictest6425-21cron22:43:491
3680998764,14cyclictest5966-21ssh23:34:340
3680998759,20cyclictest19581-21sh21:18:020
3680998759,20cyclictest19581-21sh21:18:020
3680998739,17cyclictest181rcu_preempt19:39:330
3680998730,10cyclictest0-21swapper/020:49:220
3688998669,11cyclictest31650-21ssh00:18:511
3688998664,16cyclictest30272-21sh21:34:241
368899864,74cyclictest0-21swapper/120:59:031
3688998636,42cyclictest0-21swapper/121:18:521
3688998636,42cyclictest0-21swapper/121:18:521
368899862,79cyclictest0-21swapper/123:19:021
3680998665,15cyclictest27297-21cpu22:24:060
3680998656,22cyclictest26712-21fschecks_time21:29:120
3680998649,12cyclictest181rcu_preempt22:39:420
3680998649,12cyclictest181rcu_preempt22:39:420
3680998637,18cyclictest181rcu_preempt00:25:340
3680998637,18cyclictest181rcu_preempt00:25:340
3680998635,9cyclictest181rcu_preempt20:19:260
3680998635,12cyclictest181rcu_preempt20:53:540
3680998635,12cyclictest181rcu_preempt20:53:540
3688998552,26cyclictest4416-21kworker/u18:1+nfsiod22:49:481
368899854,72cyclictest0-21swapper/121:49:051
368899853,70cyclictest0-21swapper/120:09:051
3680998536,12cyclictest181rcu_preempt20:04:230
3696998457,20cyclictest31787-21latency_hist00:18:522
3688998469,9cyclictest23953-21munin-run22:18:491
3680998451,23cyclictest3468-21idleruntime-cro22:38:490
3680998451,23cyclictest3468-21idleruntime-cro22:38:490
3680998440,12cyclictest181rcu_preempt22:57:530
3680998427,32cyclictest181rcu_preempt21:08:260
228628414,40sleep10-21swapper/118:59:081
228628414,40sleep10-21swapper/118:59:081
368899834,73cyclictest0-21swapper/119:14:021
3688998338,38cyclictest9220-21modprobe20:58:491
3688998338,38cyclictest9220-21modprobe20:58:491
368899833,67cyclictest0-21swapper/119:04:051
368899833,67cyclictest0-21swapper/119:04:051
3688998333,39cyclictest0-21swapper/122:59:141
3688998333,39cyclictest0-21swapper/122:59:141
3688998332,45cyclictest5054-21cron00:28:491
3688998332,45cyclictest5054-21cron00:28:491
3680998336,17cyclictest181rcu_preempt23:02:420
3680998336,17cyclictest181rcu_preempt23:02:420
3696998263,13cyclictest25051-21switchtime22:19:232
3688998239,37cyclictest31921-21ssh23:24:241
368899823,73cyclictest0-21swapper/122:09:051
368899823,67cyclictest0-21swapper/123:14:001
3688998231,44cyclictest0-21swapper/119:11:361
3680998254,11cyclictest181rcu_preempt20:59:240
3680998250,15cyclictest181rcu_preempt21:34:080
3688998159,15cyclictest31769-21kworker/u19:1-nfsiod23:57:191
368899815,69cyclictest0-21swapper/121:44:051
3688998152,20cyclictest31978-21cut20:28:511
368899814,72cyclictest0-21swapper/100:19:051
3688998142,32cyclictest0-21swapper/123:08:531
3688998142,32cyclictest0-21swapper/123:08:531
3680998137,12cyclictest181rcu_preempt00:17:590
3680998132,30cyclictest181rcu_preempt00:19:240
3680998129,9cyclictest181rcu_preempt19:13:520
370299802,40cyclictest0-21swapper/321:19:073
368899808,62cyclictest2110-21ssh23:29:521
368899803,69cyclictest0-21swapper/119:29:011
368899803,66cyclictest0-21swapper/100:04:001
3680998067,9cyclictest0-21swapper/020:09:330
3680998034,17cyclictest181rcu_preempt22:51:290
370299796,55cyclictest8051-21chrt23:39:063
369699792,38cyclictest15759-21latency_hist22:58:522
3688997938,33cyclictest0-21swapper/123:11:031
3688997938,33cyclictest0-21swapper/123:11:031
368899793,66cyclictest0-21swapper/119:44:061
368899793,63cyclictest32235-21apt-get20:29:011
3680997958,7cyclictest181rcu_preempt23:21:150
3680997958,14cyclictest297-21systemd-logind00:13:500
3680997958,14cyclictest297-21systemd-logind00:13:500
3680997942,8cyclictest181rcu_preempt22:05:540
368899783,70cyclictest0-21swapper/100:09:021
368899783,70cyclictest0-21swapper/100:09:021
368899783,64cyclictest0-21swapper/120:49:041
368899782,63cyclictest29021-21apt-get20:19:021
368899782,48cyclictest352-21runrttasks00:33:001
3688997819,37cyclictest352-21runrttasks22:07:191
3680997856,8cyclictest181rcu_preempt23:27:160
3680997845,13cyclictest181rcu_preempt23:58:240
3680997839,17cyclictest181rcu_preempt21:41:300
3680997839,17cyclictest181rcu_preempt21:41:300
3680997837,16cyclictest181rcu_preempt19:34:210
3680997836,19cyclictest181rcu_preempt19:24:220
3680997834,14cyclictest181rcu_preempt19:44:130
3680997833,12cyclictest181rcu_preempt19:49:150
3680997833,12cyclictest181rcu_preempt19:49:150
3680997831,17cyclictest181rcu_preempt00:04:060
369699773,33cyclictest10844-21diskmemload21:20:072
368899774,64cyclictest1414-21apt-get20:33:591
368899774,62cyclictest0-21swapper/119:24:061
3688997733,38cyclictest13763-21switchtime22:54:251
3680997738,11cyclictest181rcu_preempt20:39:140
3680997736,21cyclictest181rcu_preempt21:49:120
3680997729,11cyclictest181rcu_preempt19:30:340
3688997655,15cyclictest3978-21unixbench_singl20:39:351
368899764,51cyclictest352-21runrttasks20:47:431
368899763,64cyclictest0-21swapper/123:44:031
3688997633,34cyclictest0-21swapper/119:53:541
3688997633,34cyclictest0-21swapper/119:53:541
368899762,64cyclictest4856-21ssh23:34:061
368899762,64cyclictest0-21swapper/119:19:031
3680997650,10cyclictest181rcu_preempt19:54:120
3680997638,13cyclictest0-21swapper/022:23:530
3680997620,28cyclictest0-21swapper/023:18:500
369699753,34cyclictest32437-21/usr/sbin/munin21:39:172
369699753,34cyclictest32437-21/usr/sbin/munin21:39:172
368899753,62cyclictest0-21swapper/122:34:031
368899753,62cyclictest0-21swapper/122:34:031
3688997534,33cyclictest0-21swapper/120:14:341
3680997544,9cyclictest181rcu_preempt21:56:530
3680997534,16cyclictest181rcu_preempt21:18:560
3680997531,12cyclictest181rcu_preempt20:34:370
3680997529,14cyclictest181rcu_preempt19:20:300
368899743,66cyclictest0-21swapper/121:39:051
368899743,66cyclictest0-21swapper/121:39:051
368899743,62cyclictest23219-21latency_hist21:23:521
368899743,58cyclictest30267-21apt-get22:29:011
368899743,51cyclictest14545-21fschecks_time19:34:421
3688997427,42cyclictest0-21swapper/122:03:531
3688997410,53cyclictest8085-21rm23:39:111
3680997452,8cyclictest181rcu_preempt20:44:250
3680997442,13cyclictest181rcu_preempt22:33:170
3680997442,12cyclictest181rcu_preempt21:24:150
3680997432,32cyclictest0-21swapper/023:04:500
3680997432,32cyclictest0-21swapper/023:04:500
368099742,24cyclictest18660-21kernelversion22:09:150
3696997350,15cyclictest2952-21systemd-journal22:17:342
3696997339,9cyclictest181rcu_preempt23:49:142
3680997337,11cyclictest181rcu_preempt19:04:060
3680997337,11cyclictest181rcu_preempt19:04:060
368099733,33cyclictest603-21timerwakeupswit20:29:250
3680997316,15cyclictest0-21swapper/019:59:290
3696997221,37cyclictest11218-21cat23:44:122
368899723,59cyclictest6984-21apt22:44:001
368899723,59cyclictest0-21swapper/120:04:021
3680997223,18cyclictest0-21swapper/022:14:090
269922720,5sleep2371rcuc/223:16:392
3696997157,10cyclictest3671-21cyclictest00:19:252
3696997155,10cyclictest7265-21cut19:13:522
3680997135,11cyclictest181rcu_preempt19:15:520
370299707,36cyclictest0-21swapper/321:59:113
3696997044,17cyclictest27184-21apt-key20:13:542
3696997042,7cyclictest181rcu_preempt23:03:262
3696997042,7cyclictest181rcu_preempt23:03:262
3696997041,21cyclictest29951-21latency_hist22:28:542
369699701,43cyclictest21903-21latency_hist23:08:532
369699701,43cyclictest21903-21latency_hist23:08:532
3688997055,10cyclictest25354-21ssh21:26:431
368899703,57cyclictest27283-21ssh22:24:031
3688997030,33cyclictest0-21swapper/122:19:091
368899702,58cyclictest22052-21munin-plugin-st19:58:491
266227021,29sleep30-21swapper/318:59:233
266227021,29sleep30-21swapper/318:59:233
369699693,46cyclictest9233-21munin-plugin-st20:58:492
369699693,46cyclictest9233-21munin-plugin-st20:58:492
3696996912,21cyclictest30172-21sh23:22:142
3696996851,11cyclictest297-21systemd-logind23:13:522
3696996851,11cyclictest297-21systemd-logind23:13:522
3696996850,10cyclictest0-21swapper/220:39:322
3696996847,15cyclictest1-21systemd21:27:132
369699684,44cyclictest7796-21latency_hist20:53:532
3696996838,20cyclictest23656-21sh20:03:492
369699683,33cyclictest24414-21/usr/sbin/munin20:04:182
369699679,36cyclictest22174-21wc19:58:522
3696996751,9cyclictest0-21swapper/200:09:272
3696996751,9cyclictest0-21swapper/200:09:272
3696996748,14cyclictest7772-21fschecks_time19:14:112
3696996748,12cyclictest0-21swapper/220:19:242
3696996740,21cyclictest3830-21cpu22:39:072
3696996740,21cyclictest3830-21cpu22:39:072
369699673,36cyclictest4101-21grep21:44:272
369699673,34cyclictest12550-21fschecks_count19:29:112
370299662,44cyclictest0-21swapper/323:09:063
370299662,44cyclictest0-21swapper/323:09:063
369699665,37cyclictest5128-21tune2fs23:34:122
3696996645,15cyclictest9462-21if_err_eth019:19:122
3696996634,22cyclictest5968-21cron20:48:502
3696996630,21cyclictest30789-21taskset22:29:172
369699655,37cyclictest27408-21apt-get20:14:062
3696996549,8cyclictest0-21swapper/221:49:122
3696996548,11cyclictest0-21swapper/222:34:232
3696996548,11cyclictest0-21swapper/222:34:232
369699654,35cyclictest15621-21latency_hist19:38:522
3696996543,12cyclictest0-21swapper/223:54:262
369699653,40cyclictest19963-21unixbench_multi19:49:262
369699653,40cyclictest19963-21unixbench_multi19:49:262
3696996528,8cyclictest381ktimers/222:04:272
369699652,42cyclictest6598-21runrttasks00:29:462
369699651,40cyclictest16030-21fschecks_count19:39:102
3696996448,10cyclictest25070-21kworker/u17:2-rpciod00:07:352
3696996447,11cyclictest1268-21ssh23:28:502
3696996446,10cyclictest0-21swapper/221:58:512
369699644,36cyclictest18227-21/usr/sbin/munin22:09:232
3696996442,15cyclictest15161-21latency_hist22:03:542
369699641,28cyclictest5331-21wc19:08:522
369699641,28cyclictest5331-21wc19:08:522
370299636,34cyclictest0-21swapper/323:29:043
369699635,32cyclictest26945-21/usr/sbin/munin21:29:162
3696996347,9cyclictest28864-21kworker/u17:0-xprtiod00:24:012
3696996347,9cyclictest28864-21kworker/u17:0-xprtiod00:24:012
369699633,45cyclictest9928-21/usr/sbin/munin22:49:262
370299623,39cyclictest917-21kworker/3:1+events00:17:533
369699625,38cyclictest22508-21ssh00:03:342
3696996246,10cyclictest3671-21cyclictest21:17:522
3696996246,10cyclictest3671-21cyclictest21:17:522
369699624,33cyclictest32276-21latency_hist21:38:522
3696996239,13cyclictest0-21swapper/220:34:372
370299619,32cyclictest0-21swapper/320:14:223
3696996147,8cyclictest0-21swapper/220:29:112
3696996144,12cyclictest58-21kcompactd020:24:382
3696996140,15cyclictest16860-21idleruntime-cro21:13:492
369699612,43cyclictest352-21runrttasks19:44:472
3696996045,9cyclictest10942-21sort21:03:522
3696996036,13cyclictest0-21swapper/221:08:542
370299598,29cyclictest0-21swapper/319:34:103
370299573,29cyclictest0-21swapper/323:53:533
370299572,41cyclictest9763-21chrt19:19:213
369699573,36cyclictest12112-21awk19:28:502
370299563,39cyclictest26672-21chrt21:29:123
370299554,38cyclictest4032-21taskset20:39:363
370299553,36cyclictest4472-21chrt22:39:243
370299553,36cyclictest4472-21chrt22:39:243
370299543,39cyclictest12103-21chrt23:44:293
370299543,37cyclictest26212-21chrt00:09:123
370299543,37cyclictest26212-21chrt00:09:123
370299543,35cyclictest2545-21taskset00:24:083
370299543,35cyclictest2545-21taskset00:24:083
370299543,34cyclictest22864-21chrt19:59:223
370299542,43cyclictest1194-21taskset23:28:403
370299542,38cyclictest9724-21taskset20:59:123
370299542,36cyclictest25647-21chrt20:09:063
370299534,34cyclictest3773-21taskset21:44:243
370299532,36cyclictest9337-21taskset20:58:523
370299532,36cyclictest9337-21taskset20:58:523
370299532,30cyclictest917-21kworker/3:1+events20:19:123
370299526,34cyclictest10910-21chrt22:49:253
370299524,35cyclictest1339-21taskset20:33:533
370299524,33cyclictest7794-21taskset19:14:113
370299523,37cyclictest24371-21chrt20:04:163
370299523,36cyclictest15519-21chrt21:10:103
370299523,32cyclictest1732-21taskset21:41:123
370299523,32cyclictest1732-21taskset21:41:123
370299523,29cyclictest9052-21chrt21:54:053
370299522,35cyclictest15385-21chrt22:04:063
370299513,36cyclictest19934-21taskset22:11:033
370299513,36cyclictest19002-21chrt19:48:543
370299513,35cyclictest12978-21chrt22:54:033
370299513,34cyclictest453-21chrt00:19:263
370299512,36cyclictest27033-21chrt22:23:523
370299512,35cyclictest5567-21chrt23:34:233
370299512,35cyclictest28406-21taskset23:19:123
370299512,35cyclictest10775-21chrt19:24:073
370299503,35cyclictest13246-21chrt19:29:263
370299503,33cyclictest6662-21chrt20:49:163
370299503,33cyclictest29680-21chrt21:34:103
370299503,33cyclictest17346-21chrt23:54:133
370299502,41cyclictest917-21kworker/3:1+events21:26:293
370299502,37cyclictest21781-21taskset00:01:313
370299502,36cyclictest19575-21taskset19:49:183
370299502,36cyclictest19575-21taskset19:49:183
370299502,35cyclictest6131-21chrt21:49:063
370299502,35cyclictest17160-21taskset22:59:473
370299502,35cyclictest17160-21taskset22:59:473
370299502,34cyclictest31275-21chrt20:24:383
370299494,31cyclictest684-21taskset22:33:533
370299493,36cyclictest29282-21chrt22:27:003
370299493,34cyclictest7084-21taskset00:31:093
370299493,32cyclictest27838-21chrt23:18:513
370299493,32cyclictest19889-21taskset21:18:503
370299493,32cyclictest19889-21taskset21:18:503
370299493,31cyclictest13984-21chrt21:08:533
370299483,34cyclictest5332-21chrt19:08:523
370299483,34cyclictest5332-21chrt19:08:523
370299483,31cyclictest24647-21chrt00:06:133
370299473,33cyclictest20575-21taskset23:06:033
370299473,33cyclictest20575-21taskset23:06:033
370299473,32cyclictest3081-21taskset22:37:463
370299473,32cyclictest3081-21taskset22:37:463
370299463,33cyclictest5519-21chrt20:44:263
370299443,32cyclictest2393-21chrt20:34:383
370299423,30cyclictest23967-21chrt22:18:493
370299423,27cyclictest5503-21taskset19:08:563
370299422,25cyclictest917-21kworker/3:1+events19:54:053
370299382,27cyclictest16191-21taskset19:39:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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