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2026-04-23 - 13:34
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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 Thu Apr 23, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18037211210,58sleep218077-21fschecks_count18:58:022
193369910236,29cyclictest30847-21seq19:35:530
2659321000,6sleep20-21swapper/219:22:592
2008021000,8sleep30-21swapper/322:38:173
270782990,3sleep30-21swapper/321:03:003
19336999938,25cyclictest13310-21seq20:19:480
19336999938,25cyclictest13310-21seq20:19:480
19336999643,21cyclictest10637-21seq21:28:510
19336999643,21cyclictest10637-21seq21:28:510
19336999629,27cyclictest19981-21runrttasks20:42:320
19336999539,23cyclictest24796-21seq20:57:020
19336999539,23cyclictest24796-21seq20:57:020
19336999538,25cyclictest14697-21seq23:24:590
19336999538,25cyclictest14697-21seq23:24:590
19336999442,22cyclictest20167-21seq23:33:300
19336999442,22cyclictest20167-21seq23:33:300
19336999439,25cyclictest26087-21seq19:22:000
19336999439,25cyclictest26087-21seq19:22:000
19336999438,17cyclictest12644-21seq23:22:350
19336999338,24cyclictest32381-21seq19:39:580
19336999337,22cyclictest14971-21seq20:25:310
19336999240,21cyclictest21245-21seq00:29:570
19336999239,16cyclictest17147-21seq21:40:140
19336999239,16cyclictest17147-21seq21:40:140
19336999238,21cyclictest8327-21seq20:06:110
19336999232,27cyclictest0-21swapper/000:25:350
19336999140,16cyclictest12942-21seq00:17:240
19336999139,19cyclictest23162-21seq20:52:070
19336999138,20cyclictest23222-21seq21:50:270
19336999131,23cyclictest15323-21runrttasks22:31:450
19336999041,20cyclictest29875-21seq22:02:150
19336999041,15cyclictest6132-21seq00:05:040
19336999039,16cyclictest27545-21seq19:25:040
19336999038,22cyclictest3255-21seq19:51:280
19336999038,15cyclictest352-21runrttasks22:58:450
19336999033,23cyclictest3768-21runrttasks00:01:480
19336999033,23cyclictest3768-21runrttasks00:01:480
19336999030,23cyclictest27125-21runrttasks23:46:230
19336998938,16cyclictest23230-21seq23:38:450
19336998929,26cyclictest0-21swapper/021:21:460
19336998840,12cyclictest18124-21ssh22:36:110
19336998840,12cyclictest18124-21ssh22:36:110
19336998833,23cyclictest0-21swapper/023:14:530
19336998833,23cyclictest0-21swapper/023:14:530
179412889,55sleep017995-21expr18:57:560
263892870,25sleep239-21ksoftirqd/222:49:232
263892870,25sleep239-21ksoftirqd/222:49:232
19336998740,40cyclictest13327-21cat21:33:140
19336998738,39cyclictest9271-21ssh00:10:300
19336998735,19cyclictest1409-21seq19:43:220
19336998727,25cyclictest16472-21runrttasks20:29:070
19340998635,13cyclictest181rcu_preempt22:12:411
19336998641,14cyclictest24282-21seq19:14:230
19336998641,14cyclictest24282-21seq19:14:230
19336998630,20cyclictest0-21swapper/021:15:090
19336998540,15cyclictest29102-21seq19:29:250
19336998537,38cyclictest29857-21ssh23:50:420
19336998537,38cyclictest29857-21ssh23:50:420
19336998453,19cyclictest19526-21apt-get19:02:510
19336998431,21cyclictest0-21swapper/020:44:420
19336998431,19cyclictest0-21swapper/021:07:470
19336998431,19cyclictest0-21swapper/021:07:470
1803428411,47sleep118036-21/usr/sbin/munin18:58:011
19336998340,20cyclictest20119-21seq21:45:080
19340998259,13cyclictest0-21swapper/120:57:391
19340998259,13cyclictest0-21swapper/120:57:391
19336998241,31cyclictest7138-21apt-get22:17:500
19336998241,31cyclictest7138-21apt-get22:17:500
19336998239,34cyclictest21947-21ssh22:42:510
19336998230,18cyclictest18297-21runrttasks20:36:360
105532820,17sleep110554-21sh00:12:561
1935999817,51cyclictest16617-21taskset00:22:593
19352998164,10cyclictest15877-21latency_hist22:32:422
19352998154,18cyclictest15576-21fschecks_count21:37:592
19352998154,18cyclictest15576-21fschecks_count21:37:592
19352998136,29cyclictest277-21dbus-daemon21:22:392
19340998161,10cyclictest0-21swapper/119:53:381
19336998153,19cyclictest6331-21apt-get21:22:490
19336998145,27cyclictest19298-21/usr/sbin/munin22:38:000
119992810,9sleep111997-21apt21:32:371
119992810,9sleep111997-21apt21:32:371
19352998054,17cyclictest22322-21/usr/sbin/munin22:43:012
19340998057,14cyclictest0-21swapper/122:07:391
19340998057,13cyclictest0-21swapper/119:32:401
19340998057,12cyclictest0-21swapper/120:47:411
19352997949,22cyclictest20365-21switchtime00:28:122
19336997943,26cyclictest6666-21cat22:17:380
19336997943,26cyclictest6666-21cat22:17:380
19352997854,18cyclictest18453-21latency_hist20:37:402
19352997854,18cyclictest16961-21timerwakeupswit22:33:162
19352997854,18cyclictest16961-21timerwakeupswit22:33:162
19352997836,12cyclictest31702-21ssh22:58:132
19352997834,17cyclictest2327-21ssh21:15:422
19340997859,9cyclictest0-21swapper/119:52:421
19340997858,11cyclictest0-21swapper/120:32:591
19340997856,12cyclictest0-21swapper/120:02:401
19340997831,36cyclictest27977-21latency_hist19:27:411
19336997851,21cyclictest5506-21apt-get19:57:530
19336997845,23cyclictest10572-21/usr/sbin/munin22:23:060
19336997842,29cyclictest27497-21ssh22:52:320
19336997842,29cyclictest27497-21ssh22:52:320
19336997842,28cyclictest3086-21ssh22:11:170
19336997830,39cyclictest3870-21/usr/sbin/munin19:53:470
19352997741,10cyclictest25966-21ssh21:54:392
1935299773,42cyclictest16556-21apt-get00:23:072
19340997758,9cyclictest0-21swapper/119:13:021
19340997758,9cyclictest0-21swapper/119:13:021
19336997744,24cyclictest21526-21chrt19:07:500
19336997741,26cyclictest8716-21apt-get20:07:490
19336997741,26cyclictest8716-21apt-get20:07:490
19336997729,16cyclictest352-21runrttasks20:13:190
19336997729,16cyclictest352-21runrttasks20:13:190
1875227712,41sleep30-21swapper/318:58:243
19352997637,19cyclictest12979-21ssh21:33:092
19340997660,9cyclictest9939-21diskmemload22:22:411
19340997660,9cyclictest9939-21diskmemload22:22:411
19340997657,9cyclictest0-21swapper/121:23:151
19336997643,24cyclictest4301-21/usr/sbin/munin23:07:470
19336997643,24cyclictest4301-21/usr/sbin/munin23:07:470
19352997557,12cyclictest18933-21acpi22:37:472
19352997556,12cyclictest0-21swapper/221:08:002
19352997556,12cyclictest0-21swapper/221:08:002
19352997537,17cyclictest29425-21ssh22:00:582
1935299753,41cyclictest7138-21apt-get22:17:532
1935299753,41cyclictest7138-21apt-get22:17:532
19352997534,17cyclictest5970-21ssh00:04:372
19340997559,11cyclictest26473-21diskmemload23:26:161
19340997559,11cyclictest26473-21diskmemload23:26:161
19340997557,11cyclictest0-21swapper/120:32:401
19336997543,23cyclictest26697-21latency_hist21:02:410
1935299747,46cyclictest7559-21apt-get23:13:052
1935299747,46cyclictest7559-21apt-get23:13:052
19352997449,18cyclictest1-21systemd19:51:522
19352997449,15cyclictest297-21systemd-logind19:42:382
19340997456,8cyclictest0-21swapper/123:48:021
19340997456,8cyclictest0-21swapper/123:48:021
19340997447,20cyclictest16925-21sh00:23:221
19336997447,20cyclictest16362-21journal-offline00:22:410
19336997444,20cyclictest31449-21/usr/sbin/munin23:53:070
19336997442,23cyclictest24867-21ssh21:53:040
19336997433,37cyclictest0-21swapper/021:02:510
19352997352,13cyclictest0-21swapper/223:37:502
19352997336,17cyclictest13559-21ssh23:23:072
19352997336,17cyclictest13559-21ssh23:23:072
19352997335,10cyclictest14738-21ssh00:19:032
1934099738,24cyclictest26696-21seq23:45:091
19336997344,20cyclictest28744-21/usr/sbin/munin22:53:120
19336997342,21cyclictest16088-21chrt23:27:550
19336997341,24cyclictest1371-21ssh23:02:490
19336997337,30cyclictest31714-21runrttasks22:04:010
19352997252,14cyclictest297-21systemd-logind20:22:382
19352997252,14cyclictest297-21systemd-logind20:22:382
19352997249,17cyclictest20910-21latency_hist19:07:402
19352997237,13cyclictest19327-21cyclictest23:04:402
19352997235,9cyclictest9222-21ssh00:10:222
19352997235,12cyclictest181rcu_preempt23:32:562
19352997235,12cyclictest181rcu_preempt23:32:562
1935299722,58cyclictest3361-21apt-get19:52:522
19340997253,10cyclictest0-21swapper/120:07:541
19340997253,10cyclictest0-21swapper/120:07:541
19352997149,15cyclictest300-21rs:main2
19352997143,21cyclictest27781-21timerwakeupswit21:03:142
19352997139,12cyclictest32171-21ssh23:53:452
19352997138,18cyclictest11745-21ssh21:31:582
19352997138,18cyclictest11745-21ssh21:31:582
19352997135,20cyclictest29308-21ssh23:49:092
19352997135,20cyclictest29308-21ssh23:49:092
19352997133,10cyclictest471-21ssh22:07:262
19340997151,14cyclictest1061-21/usr/sbin/munin23:02:391
19340997137,10cyclictest0-21swapper/123:58:041
19340997137,10cyclictest0-21swapper/123:58:041
19352997053,11cyclictest28031-21ssh22:52:542
19352997048,16cyclictest297-21systemd-logind20:02:382
19352997040,16cyclictest5893-21ssh23:09:342
19352997040,16cyclictest5893-21ssh23:09:342
19352997035,9cyclictest833-21ssh22:07:442
19352997034,24cyclictest0-21swapper/220:42:412
19352997033,10cyclictest22619-21ssh21:48:452
1934099708,23cyclictest21104-21seq00:29:331
19340997051,13cyclictest2374-21systemd-journal21:02:381
19340997048,16cyclictest18678-21modprobe23:32:371
89762690,6sleep30-21swapper/320:08:003
89762690,6sleep30-21swapper/320:08:003
19340996950,12cyclictest0-21swapper/100:22:401
19340996947,15cyclictest32488-21sendmail21:12:371
19340996947,15cyclictest32488-21sendmail21:12:371
19340996946,15cyclictest2374-21systemd-journal23:54:021
1935999683,42cyclictest0-21swapper/323:13:043
1935999683,42cyclictest0-21swapper/323:13:043
19352996848,14cyclictest10849-21latency00:13:032
19352996842,19cyclictest4428-21needreboot22:13:042
19352996842,19cyclictest4428-21needreboot22:13:042
19352996837,17cyclictest1380-21ssh23:57:462
19352996837,17cyclictest1380-21ssh23:57:462
19352996812,30cyclictest25621-21timerandwakeup19:18:132
19352996812,30cyclictest25621-21timerandwakeup19:18:132
19340996839,20cyclictest19923-21timerwakeupswit22:38:141
1934099682,43cyclictest10068-21apt-get20:12:521
1934099682,43cyclictest10068-21apt-get20:12:521
19352996747,14cyclictest21407-21cpu19:07:492
19352996736,10cyclictest11215-21ssh23:18:252
19340996750,10cyclictest26728-21sh21:56:471
19340996743,16cyclictest21012-21latency_hist21:47:401
19340996715,14cyclictest9749-21latency_hist23:17:401
19340996715,14cyclictest9749-21latency_hist23:17:401
19359996611,32cyclictest0-21swapper/319:52:523
19352996648,11cyclictest0-21swapper/220:12:382
19352996648,11cyclictest0-21swapper/220:12:382
19352996634,18cyclictest11924-21ssh22:25:322
19340996652,10cyclictest19327-21cyclictest21:32:521
19340996649,11cyclictest10626-21ntp_offset22:23:071
19340996646,14cyclictest28857-21sh22:53:141
19340996645,15cyclictest19327-21cyclictest19:07:511
19340996636,20cyclictest22919-21ls23:38:141
19340996624,35cyclictest4426-21ssh00:02:541
19352996544,15cyclictest25167-21fschecks_count23:42:592
1935299653,39cyclictest11413-21wc20:14:202
1935299653,39cyclictest11413-21wc20:14:202
19352996533,10cyclictest17268-21ssh23:28:502
19340996545,14cyclictest465-21cstates21:12:531
19340996545,14cyclictest18014-21sh21:42:381
19340996545,14cyclictest18014-21sh21:42:381
19340996535,21cyclictest15136-21modprobe20:27:371
19352996426,8cyclictest0-21swapper/219:42:542
1934099646,23cyclictest1582-21seq19:45:371
19340996448,10cyclictest24896-21diskmemload22:47:491
19340996448,10cyclictest24896-21diskmemload22:47:491
19340996444,15cyclictest19327-21cyclictest21:50:001
19340996416,40cyclictest0-21swapper/122:42:511
19352996334,13cyclictest0-21swapper/219:32:412
19352996331,10cyclictest19327-21cyclictest20:30:262
19340996346,12cyclictest20169-21mailstats19:03:091
19340996343,14cyclictest20824-21sh23:35:221
19340996343,14cyclictest20824-21sh23:35:221
19340996343,14cyclictest16073-21cpu22:32:561
19340996343,14cyclictest16073-21cpu22:32:561
19340996336,19cyclictest7468-21sort00:07:531
19352996243,13cyclictest298-21in:imuxsock21:27:382
19352996235,14cyclictest0-21swapper/221:02:402
1935299623,31cyclictest352-21runrttasks20:57:372
1935299623,31cyclictest352-21runrttasks20:57:372
19352996230,7cyclictest181rcu_preempt20:03:142
19340996244,12cyclictest4111-21sh23:07:391
19352996144,11cyclictest19327-21cyclictest21:47:402
19340996145,11cyclictest297-21systemd-logind19:22:381
19340996145,11cyclictest297-21systemd-logind19:22:381
19340996142,13cyclictest10255-21sh23:17:581
19340996141,14cyclictest27888-21sh21:58:051
19340996141,11cyclictest0-21swapper/119:37:371
19340996136,16cyclictest1-21systemd23:12:391
19340996136,16cyclictest1-21systemd23:12:391
19340996133,19cyclictest3645-21cut21:18:001
19340996132,22cyclictest27688-21kworker/u18:0+nfsiod21:02:551
1935999604,35cyclictest0-21swapper/322:17:533
1935999604,35cyclictest0-21swapper/322:17:533
19352996035,14cyclictest0-21swapper/219:17:402
19352996035,14cyclictest0-21swapper/219:17:402
1935299603,21cyclictest15287-21latency_hist20:27:402
19340996043,9cyclictest0-21swapper/119:37:591
19340996024,24cyclictest12976-21sort22:27:481
19340995939,10cyclictest0-21swapper/120:48:101
19340995937,14cyclictest0-21swapper/120:41:501
1935299584,21cyclictest30898-21runrttasks19:36:342
1935299583,33cyclictest20913-21grep20:43:092
19340995841,11cyclictest13157-21unixbench_singl20:18:141
19340995841,11cyclictest13157-21unixbench_singl20:18:141
19340995829,20cyclictest8565-21cut20:07:401
19340995816,38cyclictest0-21swapper/122:12:521
19340995816,38cyclictest0-21swapper/122:12:521
1935999563,37cyclictest17716-21taskset20:33:113
1935999552,38cyclictest21078-21taskset19:07:413
1935999543,34cyclictest389-21chrt19:42:493
1935999542,39cyclictest28074-21taskset22:52:573
1935999534,37cyclictest31375-21taskset21:09:373
1935999534,37cyclictest31375-21taskset21:09:373
1935999533,39cyclictest564-21chrt22:07:373
1935999533,36cyclictest25337-21chrt19:18:063
1935999533,36cyclictest25337-21chrt19:18:063
1935999533,34cyclictest15888-21chrt22:32:423
1935999532,37cyclictest6535-21chrt21:22:593
1935999524,33cyclictest23631-21chrt20:52:563
1935999524,33cyclictest23631-21chrt20:52:563
1935999523,37cyclictest15754-21chrt21:38:023
1935999523,37cyclictest15754-21chrt21:38:023
1935999523,37cyclictest13694-21chrt23:23:113
1935999523,37cyclictest13694-21chrt23:23:113
1935999523,36cyclictest21625-21chrt21:47:593
1935999523,35cyclictest28096-21chrt19:27:543
1935999523,35cyclictest19614-21chrt20:38:133
1935999523,34cyclictest20691-21taskset00:28:223
1935999523,32cyclictest3332-21chrt21:17:483
1935999522,37cyclictest16020-21chrt22:32:543
1935999522,37cyclictest16020-21chrt22:32:543
1935999522,37cyclictest11407-21taskset20:14:203
1935999522,37cyclictest11407-21taskset20:14:203
1935999522,35cyclictest29662-21chrt19:32:523
1935999515,26cyclictest0-21swapper/323:52:403
1935999515,26cyclictest0-21swapper/323:52:403
1935999513,37cyclictest6381-21taskset22:17:053
1935999513,37cyclictest6381-21taskset22:17:053
1935999513,35cyclictest26021-21taskset21:54:483
1935999513,31cyclictest13209-21taskset00:17:403
1935999512,38cyclictest882-21taskset22:07:493
1935999512,38cyclictest4674-21chrt00:03:003
1935999512,38cyclictest20720-21chrt20:43:033
1935999512,36cyclictest1868-21chrt21:14:233
1935999512,35cyclictest9293-21taskset00:10:343
1935999512,33cyclictest3753-21taskset23:06:553
1935999504,31cyclictest14218-21taskset00:18:133
1935999503,35cyclictest19762-21chrt23:33:133
1935999503,35cyclictest19762-21chrt23:33:133
1935999503,35cyclictest13936-21taskset21:34:383
1935999503,35cyclictest10240-21chrt23:17:563
1935999503,33cyclictest18808-21chrt23:32:403
1935999503,33cyclictest10581-21chrt21:28:423
1935999503,33cyclictest10581-21chrt21:28:423
1935999503,32cyclictest27427-21chrt23:47:153
1935999503,32cyclictest25458-21chrt22:48:063
1935999503,32cyclictest25458-21chrt22:48:063
1935999502,34cyclictest27692-21taskset21:58:003
1935999502,34cyclictest16219-21taskset20:28:133
1935999494,30cyclictest2067-21chrt19:47:553
1935999493,34cyclictest22368-21chrt20:48:063
1935999493,31cyclictest14156-21taskset20:23:033
1935999492,35cyclictest20066-21chrt21:44:593
1935999492,33cyclictest31439-21taskset19:37:593
1935999483,33cyclictest3495-21chrt00:01:023
1935999483,33cyclictest3495-21chrt00:01:023
1935999482,36cyclictest31631-21chrt22:58:123
1935999482,35cyclictest22714-21taskset22:43:123
1935999482,34cyclictest22725-21taskset23:38:113
1935999482,33cyclictest23681-21taskset19:13:043
1935999482,33cyclictest23681-21taskset19:13:043
1935999482,30cyclictest7060-21taskset20:02:413
1935999473,34cyclictest7618-21taskset20:03:063
1935999473,31cyclictest31801-21chrt23:53:153
1935999472,32cyclictest21773-21chrt19:08:023
1935999463,34cyclictest13063-21chrt20:18:133
1935999463,34cyclictest13063-21chrt20:18:133
1935999462,31cyclictest6216-21taskset23:10:283
1935999462,31cyclictest6216-21taskset23:10:283
1935999432,26cyclictest26674-21chrt19:23:003
1935999402,24cyclictest917-21kworker/3:1+events20:57:423
1935999393,24cyclictest10025-21chrt22:22:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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