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2026-04-21 - 23:25
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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 Tue Apr 21, 2026 12:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4466991152,94cyclictest21764-21ssh10:13:020
3567211213,71sleep03588-21pluginstate06:58:250
1948421090,7sleep015313-21kworker/u17:2+xprtiod11:03:050
4466991042,80cyclictest30873-21apt-get10:28:180
44669910179,13cyclictest17188-21kworker/u19:1-rpciod11:53:150
44669910179,13cyclictest17188-21kworker/u19:1-rpciod11:53:150
4475999717,49cyclictest11554-21seq09:02:262
447199973,68cyclictest27136-21apt-get09:28:031
447199973,68cyclictest27136-21apt-get09:28:031
4475999148,35cyclictest0-21swapper/209:13:212
4466999056,12cyclictest181rcu_preempt10:58:450
447599883,74cyclictest0-21swapper/208:22:572
4466998814,43cyclictest15-21ksoftirqd/008:25:410
447599874,71cyclictest0-21swapper/207:52:562
447599874,71cyclictest0-21swapper/207:52:562
4475998744,36cyclictest0-21swapper/209:03:212
447599872,76cyclictest0-21swapper/210:22:572
447199872,67cyclictest16974-21runrttasks11:53:151
447199872,67cyclictest16974-21runrttasks11:53:151
4466998761,18cyclictest6008-21latency_hist07:07:470
4466998761,18cyclictest6008-21latency_hist07:07:470
323028714,46sleep30-21swapper/306:58:113
447599866,65cyclictest31773-21ssh12:18:002
447599853,76cyclictest0-21swapper/211:43:002
447599853,70cyclictest0-21swapper/208:52:572
4471998561,17cyclictest21490-21latency_hist07:52:461
4466998560,17cyclictest18331-21latency_hist07:42:460
4466998518,29cyclictest0-21swapper/010:22:450
4475998465,13cyclictest28427-21sendmail12:12:422
4475998450,30cyclictest15313-21kworker/u17:2-rpciod11:26:092
4475998427,37cyclictest0-21swapper/209:25:162
4466998452,12cyclictest181rcu_preempt12:13:230
4466998451,15cyclictest181rcu_preempt07:22:470
4471998357,17cyclictest0-21swapper/108:18:061
4466998363,14cyclictest298-21in:imuxsock08:07:440
4466998339,10cyclictest181rcu_preempt12:04:290
4466998318,30cyclictest15-21ksoftirqd/008:16:210
4475998259,17cyclictest11606-21diskmemload11:09:032
4475998259,16cyclictest7427-21sh09:48:192
447599824,69cyclictest0-21swapper/207:42:562
447599824,68cyclictest0-21swapper/207:38:002
4475998243,31cyclictest0-21swapper/210:22:462
447599822,68cyclictest0-21swapper/208:07:562
4471998232,21cyclictest0-21swapper/110:50:451
446699828,25cyclictest15-21ksoftirqd/009:17:400
4466998243,14cyclictest181rcu_preempt10:08:190
4466998217,39cyclictest15-21ksoftirqd/007:12:480
4466998213,35cyclictest15-21ksoftirqd/011:13:160
447599814,67cyclictest0-21swapper/208:12:552
447599813,71cyclictest0-21swapper/207:08:372
4466998117,31cyclictest15-21ksoftirqd/008:49:340
446699811,38cyclictest15-21ksoftirqd/007:57:300
446699811,38cyclictest15-21ksoftirqd/007:57:300
4475998064,9cyclictest15313-21kworker/u17:2-rpciod11:07:462
447599804,71cyclictest0-21swapper/210:52:582
4475998046,27cyclictest0-21swapper/211:32:442
4475998038,33cyclictest0-21swapper/210:37:462
4475998011,45cyclictest0-21swapper/209:53:432
447599799,47cyclictest0-21swapper/207:34:462
4475997966,8cyclictest0-21swapper/207:02:472
4475997960,13cyclictest11606-21diskmemload12:05:332
4475997959,13cyclictest11606-21diskmemload12:12:472
4475997956,17cyclictest11589-21kworker/u18:0+events_unbound09:22:432
447599794,64cyclictest0-21swapper/211:12:552
447599794,55cyclictest352-21runrttasks11:38:432
447599794,55cyclictest352-21runrttasks11:38:432
4475997939,33cyclictest0-21swapper/211:58:012
447599793,71cyclictest0-21swapper/208:37:582
447599793,67cyclictest30106-21ssh09:32:552
4475997927,41cyclictest0-21swapper/210:43:442
4471997960,13cyclictest4412-21sendmail11:32:431
4466997947,13cyclictest181rcu_preempt11:48:260
4466997946,25cyclictest2374-21systemd-journal10:42:480
4466997940,17cyclictest181rcu_preempt12:00:430
446699793,60cyclictest27197-21sh09:28:040
446699793,60cyclictest27197-21sh09:28:040
4466997926,12cyclictest181rcu_preempt09:27:480
4466997920,15cyclictest0-21swapper/009:18:470
447599786,52cyclictest0-21swapper/208:19:212
447599785,69cyclictest0-21swapper/211:48:002
447599782,64cyclictest0-21swapper/209:57:552
447599776,61cyclictest4401-21ssh10:37:592
4475997757,13cyclictest6194-21timerandwakeup08:43:182
447599775,67cyclictest0-21swapper/207:22:562
447599774,66cyclictest0-21swapper/207:47:592
447599774,65cyclictest11606-21diskmemload12:27:592
4475997729,36cyclictest2506-21if_eth008:33:082
4475997729,36cyclictest2506-21if_eth008:33:082
4471997733,20cyclictest31-21ksoftirqd/110:45:141
4466997749,8cyclictest181rcu_preempt09:11:280
446699773,36cyclictest12744-21switchtime09:03:190
446699773,33cyclictest14059-21grep10:53:170
446699771,40cyclictest15-21ksoftirqd/010:41:210
4466997711,31cyclictest15-21ksoftirqd/011:40:170
4466997711,31cyclictest15-21ksoftirqd/011:40:170
42952779,35sleep10-21swapper/107:02:131
447599764,65cyclictest0-21swapper/207:57:592
447599764,65cyclictest0-21swapper/207:57:592
447599764,59cyclictest0-21swapper/207:17:552
4475997641,29cyclictest12170-21ssh10:50:302
447599763,67cyclictest0-21swapper/210:57:552
447599763,62cyclictest1291-21latency_hist10:32:472
447599763,61cyclictest0-21swapper/207:02:562
447599763,61cyclictest0-21swapper/207:02:562
4475997633,36cyclictest0-21swapper/208:48:052
4475997613,52cyclictest0-21swapper/212:27:462
4466997656,12cyclictest31156-21ssh11:22:480
4466997654,8cyclictest181rcu_preempt09:33:110
4466997643,27cyclictest27906-21fschecks_count10:23:060
4466997639,12cyclictest181rcu_preempt11:11:160
446699763,38cyclictest1385-21/usr/sbin/munin10:33:100
446699761,43cyclictest15-21ksoftirqd/007:46:570
4475997560,11cyclictest4457-21cyclictest09:46:482
447599754,66cyclictest0-21swapper/209:28:322
447599754,66cyclictest0-21swapper/209:28:322
447599754,61cyclictest0-21swapper/209:07:572
447599754,55cyclictest15939-21kernelversion10:03:082
447599753,66cyclictest11606-21diskmemload11:32:552
447599753,61cyclictest0-21swapper/208:27:572
447599753,61cyclictest0-21swapper/208:27:572
4471997517,37cyclictest7580-21grep09:48:201
4466997556,14cyclictest544-21cron08:12:440
4466997555,14cyclictest26640-21xargs12:08:200
4466997552,17cyclictest9531-21/usr/sbin/munin09:53:230
4466997550,16cyclictest21531-21latency_hist07:52:460
4466997548,18cyclictest3602-21latency_hist08:37:450
4466997548,18cyclictest3602-21latency_hist08:37:450
4466997546,11cyclictest181rcu_preempt09:48:130
4466997542,7cyclictest181rcu_preempt10:06:200
4466997535,17cyclictest181rcu_preempt07:35:420
4475997422,45cyclictest18689-21cut10:08:042
4471997455,13cyclictest31280-21cpu11:22:591
4471997455,11cyclictest0-21swapper/109:18:201
4471997453,13cyclictest31659-21fschecks_time08:23:071
4471997447,19cyclictest9988-21latency_hist08:57:461
4466997459,10cyclictest5033-21ssh11:33:050
4466997448,13cyclictest181rcu_preempt10:00:550
4466997446,15cyclictest181rcu_preempt07:09:010
4466997439,7cyclictest181rcu_preempt10:47:510
4466997437,11cyclictest181rcu_preempt08:40:480
4466997435,17cyclictest181rcu_preempt11:43:160
4475997329,34cyclictest0-21swapper/211:18:172
4475997329,34cyclictest0-21swapper/211:18:172
4471997355,12cyclictest15171-21cron10:02:431
4471997352,15cyclictest352-21runrttasks07:03:101
4471997352,15cyclictest352-21runrttasks07:03:101
4471997326,12cyclictest301ktimers/110:23:021
4466997338,16cyclictest181rcu_preempt12:28:110
448299723,59cyclictest27188-21chrt09:28:033
448299723,59cyclictest27188-21chrt09:28:033
4475997251,14cyclictest19497-21cron11:57:432
4475997251,14cyclictest19497-21cron11:57:432
447599723,59cyclictest618-21apt-get09:37:552
447599723,59cyclictest618-21apt-get09:37:552
447599723,59cyclictest13641-21apt-get07:27:572
4471997257,11cyclictest4457-21cyclictest09:24:371
4471997225,11cyclictest301ktimers/110:54:551
4466997258,10cyclictest4457-21cyclictest07:28:520
4466997250,11cyclictest181rcu_preempt12:27:210
4466997242,15cyclictest181rcu_preempt08:02:050
4466997242,15cyclictest181rcu_preempt08:02:050
4466997239,10cyclictest181rcu_preempt07:23:040
4466997228,26cyclictest15-21ksoftirqd/008:31:200
4466997228,26cyclictest15-21ksoftirqd/008:31:200
446699722,38cyclictest15-21ksoftirqd/008:56:470
447599713,56cyclictest23489-21ssh10:15:152
4471997155,10cyclictest22524-21kernelversion10:14:121
4471997147,16cyclictest2374-21systemd-journal12:29:481
4471997145,18cyclictest27110-21sh11:15:271
4471997123,11cyclictest301ktimers/112:18:231
4471997110,18cyclictest19081-21ntp_states10:08:131
4466997136,13cyclictest181rcu_preempt12:21:480
4466997134,10cyclictest4457-21cyclictest11:31:360
447599704,55cyclictest352-21runrttasks08:07:042
447599704,46cyclictest352-21runrttasks07:17:232
4471997055,10cyclictest4457-21cyclictest07:07:511
4471997049,16cyclictest28574-21fschecks_time11:18:061
4471997049,16cyclictest28574-21fschecks_time11:18:061
4471997035,19cyclictest31-21ksoftirqd/111:50:191
4466997049,7cyclictest181rcu_preempt09:38:020
4466997049,7cyclictest181rcu_preempt09:38:020
4466997043,10cyclictest181rcu_preempt11:21:060
4466997043,10cyclictest181rcu_preempt11:21:060
446699703,27cyclictest4262-21processes09:43:170
4471996948,15cyclictest25365-21processes10:18:171
446699697,38cyclictest15-21ksoftirqd/008:58:110
4466996936,9cyclictest0-21swapper/008:43:080
4471996852,8cyclictest0-21swapper/108:58:051
4471996852,10cyclictest0-21swapper/108:48:201
4471996851,11cyclictest26455-21ssh12:08:181
4471996849,13cyclictest28164-21/usr/sbin/munin08:13:151
4471996844,16cyclictest15726-21fschecks_count10:03:041
447199683,43cyclictest10288-21mailstats09:53:161
4471996825,8cyclictest301ktimers/109:16:481
4471996751,11cyclictest30364-21cut09:33:051
4471996747,12cyclictest13162-21http07:27:431
4471996744,16cyclictest6422-21latency_hist09:47:461
447199673,46cyclictest8589-21apt-get07:12:541
4471996722,29cyclictest31-21ksoftirqd/107:33:301
4471996722,10cyclictest301ktimers/112:15:421
4471996646,14cyclictest25177-21fschecks_count08:03:291
4471996644,14cyclictest1-21systemd10:58:481
447199664,26cyclictest352-21runrttasks10:28:581
4466996630,10cyclictest181rcu_preempt08:18:140
8042650,7sleep30-21swapper/310:32:033
4471996550,9cyclictest20602-21diskmemload11:04:021
4471996544,15cyclictest10873-21sensors_temp07:18:171
447199653,39cyclictest23084-21find11:08:181
447199652,43cyclictest2282-21cstates08:33:021
447199652,43cyclictest2282-21cstates08:33:021
4471996517,32cyclictest31-21ksoftirqd/109:10:501
4471996514,9cyclictest12491-21grep09:03:121
447199643,37cyclictest23451-21ssh12:03:151
447199642,34cyclictest22698-21ssh12:02:461
4471996420,10cyclictest301ktimers/107:28:021
447199632,27cyclictest31-21ksoftirqd/111:34:571
4471996314,23cyclictest31-21ksoftirqd/107:43:421
4471996248,10cyclictest3077-21kworker/u17:1-events_unbound11:43:061
4471996243,12cyclictest0-21swapper/108:28:201
4471996243,12cyclictest0-21swapper/108:28:201
447199623,28cyclictest4883-21cron12:27:421
447199622,38cyclictest10519-21latency_hist11:42:461
447199622,38cyclictest10519-21latency_hist11:42:461
447199612,41cyclictest7062-21munin-run10:42:451
447199611,24cyclictest31-21ksoftirqd/107:41:491
4482996045,9cyclictest451rcuc/307:08:023
447199603,22cyclictest31-21ksoftirqd/109:40:021
447199603,22cyclictest31-21ksoftirqd/109:40:021
447199602,30cyclictest26524-21/usr/sbin/munin08:08:011
447199602,30cyclictest23062-21latency_hist07:57:461
447199602,30cyclictest23062-21latency_hist07:57:461
448299583,44cyclictest23111-21taskset07:57:453
448299583,44cyclictest23111-21taskset07:57:453
448299583,37cyclictest21613-21taskset07:52:473
4471995835,13cyclictest0-21swapper/110:33:211
447199583,41cyclictest23541-21fschecks_count07:58:051
447199583,41cyclictest23541-21fschecks_count07:58:051
447199578,14cyclictest31-21ksoftirqd/108:41:241
4482995639,10cyclictest451rcuc/309:33:263
4471995623,26cyclictest5610-21fschecks_count08:43:051
4482995440,10cyclictest451rcuc/309:46:043
448299542,39cyclictest6972-21chrt08:47:473
448299542,37cyclictest25012-21chrt09:23:213
4482995339,9cyclictest451rcuc/307:38:063
448299523,39cyclictest28626-21chrt08:13:083
448299517,25cyclictest0-21swapper/311:53:153
448299517,25cyclictest0-21swapper/311:53:153
4482995138,9cyclictest451rcuc/312:18:143
448299513,36cyclictest12454-21chrt07:23:163
448299513,35cyclictest7632-21chrt10:43:063
448299513,34cyclictest22537-21chrt12:02:453
448299512,37cyclictest25288-21chrt10:18:133
448299512,35cyclictest18318-21chrt09:13:073
448299503,37cyclictest14327-21chrt07:29:103
448299503,33cyclictest30013-21taskset08:18:063
4482995031,12cyclictest451rcuc/310:48:383
448299502,36cyclictest10270-21taskset08:57:593
448299502,35cyclictest29344-21chrt10:25:023
4482994934,10cyclictest451rcuc/311:48:273
448299493,36cyclictest23488-21taskset09:22:283
448299493,34cyclictest14532-21chrt10:00:543
448299493,33cyclictest4988-21chrt07:03:073
448299493,33cyclictest4988-21chrt07:03:073
448299492,36cyclictest3086-21chrt09:42:143
448299492,36cyclictest3086-21chrt09:42:143
448299492,36cyclictest21713-21chrt10:12:543
448299492,33cyclictest5959-21chrt11:33:433
448299492,30cyclictest4301-21chrt10:37:473
4482994833,8cyclictest451rcuc/311:26:503
448299483,36cyclictest9714-21chrt09:53:003
448299483,36cyclictest24804-21chrt11:12:243
448299483,34cyclictest6848-21chrt09:48:063
448299483,32cyclictest32242-21chrt08:23:213
448299482,35cyclictest15711-21chrt10:57:003
448299482,34cyclictest3851-21taskset08:37:593
448299482,34cyclictest13047-21chrt11:47:003
448299482,33cyclictest15405-21chrt07:33:023
448299482,32cyclictest16730-21chrt10:58:093
448299473,33cyclictest15865-21taskset09:08:213
448299473,32cyclictest5928-21chrt12:28:183
448299473,31cyclictest28608-21chrt12:12:463
448299463,30cyclictest9061-21chrt08:53:093
4482994630,11cyclictest451rcuc/307:45:273
448299462,32cyclictest2631-21chrt11:28:203
448299462,31cyclictest12098-21chrt09:03:023
448299462,29cyclictest4081-21taskset12:25:263
448299454,28cyclictest2809-21chrt08:33:173
448299454,28cyclictest2809-21chrt08:33:173
448299453,32cyclictest26693-21chrt11:14:143
448299453,31cyclictest20620-21chrt11:04:053
448299453,28cyclictest20680-21chrt10:11:283
448299443,31cyclictest29578-21chrt11:19:003
448299443,31cyclictest29578-21chrt11:19:003
4482994431,8cyclictest451rcuc/312:17:083
4482994429,10cyclictest451rcuc/307:17:103
448299433,30cyclictest9729-21taskset11:41:003
448299433,30cyclictest9729-21taskset11:41:003
448299423,28cyclictest27927-21chrt08:12:443
448299422,30cyclictest15679-21taskset10:03:013
448299404,26cyclictest2376-21chrt10:33:213
448299403,28cyclictest24293-21chrt12:04:273
448299403,27cyclictest10201-21taskset07:17:583
448299393,26cyclictest8305-21chrt08:52:253
4482993925,9cyclictest451rcuc/308:07:303
448299392,28cyclictest819-21taskset08:28:073
448299392,28cyclictest819-21taskset08:28:073
448299383,26cyclictest23610-21taskset07:58:053
448299383,26cyclictest23610-21taskset07:58:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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