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2026-07-19 - 01:19
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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 Sat Jul 18, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3023221126,18sleep10-21swapper/106:55:181
305129910471,16cyclictest30495-21cyclictest11:07:141
305129910471,16cyclictest30495-21cyclictest11:07:141
30421210210,65sleep230442-21latency_hist06:56:502
30506999926,47cyclictest3478-21latency_hist07:11:490
294692987,61sleep029483-21/usr/sbin/munin06:52:200
30516999748,13cyclictest181rcu_preempt08:47:232
30512999674,14cyclictest0-21swapper/112:21:501
260542960,6sleep00-21swapper/009:29:230
30506999422,41cyclictest0-21swapper/011:52:080
30516999240,12cyclictest0-21swapper/210:45:432
30506999260,12cyclictest181rcu_preempt11:02:070
30516999059,9cyclictest181rcu_preempt11:39:192
30516999044,18cyclictest181rcu_preempt12:14:112
30516999044,18cyclictest181rcu_preempt12:14:112
3051699903,56cyclictest31016-21apt-get10:32:042
3051699903,56cyclictest31016-21apt-get10:32:042
30516998936,14cyclictest0-21swapper/211:12:132
30506998910,35cyclictest15-21ksoftirqd/007:31:460
3051699877,62cyclictest20354-21apt-get08:02:052
30516998751,17cyclictest181rcu_preempt09:47:212
30516998743,10cyclictest181rcu_preempt10:47:222
30516998669,8cyclictest181rcu_preempt09:21:332
30516998661,9cyclictest181rcu_preempt09:11:502
30516998643,10cyclictest181rcu_preempt09:07:102
30506998662,13cyclictest0-21swapper/008:16:500
3050699863,37cyclictest15-21ksoftirqd/009:17:300
30522998512,46cyclictest0-21swapper/310:32:133
30522998512,46cyclictest0-21swapper/310:32:133
30516998551,11cyclictest181rcu_preempt08:52:072
3050699854,49cyclictest27049-21apt-get08:22:020
30506998518,38cyclictest15-21ksoftirqd/008:17:030
30522998410,35cyclictest0-21swapper/312:12:003
30522998410,35cyclictest0-21swapper/312:12:003
30516998443,10cyclictest181rcu_preempt07:18:112
30516998428,20cyclictest0-21swapper/210:30:252
30516998428,20cyclictest0-21swapper/210:30:252
30516998353,9cyclictest181rcu_preempt06:57:132
30516998346,10cyclictest181rcu_preempt10:37:332
30516998343,7cyclictest181rcu_preempt10:56:292
30516998340,12cyclictest181rcu_preempt12:01:492
30516998339,8cyclictest181rcu_preempt11:52:022
3051699833,57cyclictest8307-21apt-get07:27:002
30516998334,27cyclictest0-21swapper/211:22:192
30516998328,23cyclictest0-21swapper/211:34:582
30516998328,23cyclictest0-21swapper/211:34:582
3050699833,34cyclictest15-21ksoftirqd/008:06:130
30516998262,14cyclictest24240-21ssh12:07:342
30516998243,11cyclictest181rcu_preempt10:07:242
30516998237,29cyclictest0-21swapper/212:17:442
30516998232,28cyclictest0-21swapper/210:12:102
30516998232,28cyclictest0-21swapper/210:12:102
30516998232,14cyclictest0-21swapper/211:19:402
30516998232,14cyclictest0-21swapper/211:19:402
30516998226,8cyclictest0-21swapper/208:07:092
30512998262,13cyclictest544-21cron07:31:461
30506998217,36cyclictest15-21ksoftirqd/010:47:150
30516998158,8cyclictest181rcu_preempt11:42:202
30516998152,19cyclictest30495-21cyclictest11:51:482
30516998152,19cyclictest30495-21cyclictest11:51:482
30516998137,12cyclictest31609-21sort11:27:032
30516998122,17cyclictest0-21swapper/208:22:502
3050699819,27cyclictest15-21ksoftirqd/009:12:510
3050699818,35cyclictest15-21ksoftirqd/007:41:380
30506998115,38cyclictest15-21ksoftirqd/009:42:010
30506998115,29cyclictest15-21ksoftirqd/008:31:590
30516998057,16cyclictest2897-21latency_hist08:46:492
30516998055,8cyclictest181rcu_preempt07:37:052
30516998052,8cyclictest181rcu_preempt12:01:522
30516998042,14cyclictest181rcu_preempt07:06:502
30516998040,9cyclictest181rcu_preempt07:07:182
30516998039,12cyclictest181rcu_preempt09:36:292
30512998062,11cyclictest10208-21diskmemload09:57:121
30506998042,8cyclictest181rcu_preempt10:22:150
3051699796,59cyclictest32495-21apt-get12:22:502
30516997955,9cyclictest181rcu_preempt10:02:042
30516997950,9cyclictest181rcu_preempt07:52:162
30516997949,10cyclictest181rcu_preempt07:32:102
30516997926,10cyclictest0-21swapper/210:59:002
30516997926,10cyclictest0-21swapper/210:59:002
30516997925,20cyclictest0-21swapper/209:05:452
3050699799,36cyclictest15-21ksoftirqd/007:25:430
30506997962,9cyclictest0-21swapper/011:37:220
3050699793,48cyclictest5359-21apt-get07:17:020
30506997932,17cyclictest8303-21kworker/u17:3+xprtiod09:01:520
30506997923,32cyclictest15-21ksoftirqd/011:36:320
30506997923,32cyclictest15-21ksoftirqd/011:36:320
30506997913,46cyclictest15-21ksoftirqd/010:33:090
30506997913,46cyclictest15-21ksoftirqd/010:33:090
30506997913,30cyclictest15-21ksoftirqd/010:08:390
30516997843,16cyclictest181rcu_preempt09:58:592
30516997842,8cyclictest181rcu_preempt08:37:212
30516997838,11cyclictest25067-21latency_hist08:16:492
30516997831,27cyclictest0-21swapper/209:52:072
30516997830,25cyclictest0-21swapper/210:23:172
30516997830,23cyclictest5910-21diskmemload09:22:212
30516997829,19cyclictest0-21swapper/207:22:212
30516997827,20cyclictest0-21swapper/207:57:142
30516997827,20cyclictest0-21swapper/207:57:142
30516997825,13cyclictest0-21swapper/208:59:492
30512997858,13cyclictest25487-21runrttasks12:11:051
3050699789,35cyclictest15-21ksoftirqd/011:57:100
3050699787,36cyclictest15-21ksoftirqd/009:50:360
30506997859,8cyclictest0-21swapper/010:21:520
3050699784,31cyclictest15-21ksoftirqd/008:09:260
30516997742,12cyclictest181rcu_preempt07:42:032
30516997742,12cyclictest181rcu_preempt07:42:032
30516997741,10cyclictest181rcu_preempt08:28:172
30516997738,9cyclictest181rcu_preempt11:06:142
30516997732,11cyclictest25240-21unixbench_multi09:27:232
30516997729,22cyclictest1051-21ssh09:42:102
30516997727,13cyclictest0-21swapper/207:16:462
30516997727,13cyclictest0-21swapper/207:16:462
30516997722,23cyclictest0-21swapper/210:17:072
30512997761,10cyclictest30495-21cyclictest10:16:491
30512997761,10cyclictest30495-21cyclictest10:16:491
30512997760,10cyclictest22960-21kworker/u17:1-xprtiod09:52:211
3050699778,34cyclictest15-21ksoftirqd/007:05:010
3050699778,34cyclictest15-21ksoftirqd/007:05:010
30506997748,20cyclictest29422-21timerwakeupswit11:22:210
30506997741,9cyclictest30495-21cyclictest12:25:250
30506997732,10cyclictest181rcu_preempt09:01:180
30506997730,33cyclictest16680-21cat07:51:480
30506997716,37cyclictest15-21ksoftirqd/010:06:340
30506997711,26cyclictest15-21ksoftirqd/008:55:420
30516997642,10cyclictest181rcu_preempt09:37:212
30512997657,11cyclictest2374-21systemd-journal09:04:181
3050699762,31cyclictest15-21ksoftirqd/011:07:280
3050699762,31cyclictest15-21ksoftirqd/011:07:280
30506997612,35cyclictest15-21ksoftirqd/007:12:130
30506997612,35cyclictest15-21ksoftirqd/007:12:130
30506997610,34cyclictest15-21ksoftirqd/011:15:230
30516997540,11cyclictest181rcu_preempt11:07:092
30516997540,11cyclictest181rcu_preempt11:07:092
30512997558,12cyclictest30495-21cyclictest08:57:341
30506997553,15cyclictest30357-21latency_hist08:31:480
30506997547,18cyclictest2836-21latency_hist08:46:490
30506997513,29cyclictest15-21ksoftirqd/009:07:060
30506997512,37cyclictest15-21ksoftirqd/010:31:150
30506997512,37cyclictest15-21ksoftirqd/010:31:150
3052299749,40cyclictest0-21swapper/308:22:143
30516997423,20cyclictest0-21swapper/207:01:582
30506997450,8cyclictest181rcu_preempt12:18:340
30506997450,15cyclictest9000-21kworker/u18:3-rpciod10:56:450
30506997433,11cyclictest181rcu_preempt09:36:160
30506997429,7cyclictest181rcu_preempt12:09:430
3050699742,34cyclictest15-21ksoftirqd/007:56:450
3052299738,37cyclictest0-21swapper/308:28:223
30516997348,10cyclictest181rcu_preempt08:17:202
30516997338,10cyclictest181rcu_preempt08:36:182
30512997357,10cyclictest2415-21ntp_kernel_pll_07:07:141
30512997354,11cyclictest10745-21latency_hist11:46:501
3050699738,37cyclictest15-21ksoftirqd/007:01:130
30506997356,11cyclictest10266-21ssh09:57:130
30506997334,10cyclictest181rcu_preempt07:35:560
3050699733,30cyclictest15-21ksoftirqd/009:39:120
30506997312,32cyclictest15-21ksoftirqd/010:13:290
30506997312,32cyclictest15-21ksoftirqd/010:13:290
30506997311,30cyclictest15-21ksoftirqd/011:29:250
30516997249,8cyclictest181rcu_preempt07:47:132
30512997259,9cyclictest30495-21cyclictest11:27:211
30512997258,9cyclictest29278-21diskmemload11:22:191
30512997255,11cyclictest31587-21fschecks_count10:33:051
30512997255,11cyclictest31587-21fschecks_count10:33:051
3050699724,31cyclictest15-21ksoftirqd/011:21:110
3050699724,31cyclictest15-21ksoftirqd/011:21:110
30506997216,30cyclictest15-21ksoftirqd/012:04:550
3050699721,30cyclictest15-21ksoftirqd/010:42:210
30506997211,33cyclictest15-21ksoftirqd/011:43:000
30512997154,11cyclictest277-21dbus-daemon09:21:471
30512997120,20cyclictest31-21ksoftirqd/112:16:411
30512997120,20cyclictest31-21ksoftirqd/112:16:411
3050699717,33cyclictest15-21ksoftirqd/009:22:210
30506997147,17cyclictest277-21dbus-daemon08:01:470
30506997147,17cyclictest277-21dbus-daemon08:01:470
3050699712,20cyclictest15-21ksoftirqd/009:52:190
30506997110,29cyclictest15-21ksoftirqd/010:38:230
30512997056,10cyclictest30495-21cyclictest07:37:261
30512997055,9cyclictest2736-21readlink12:26:451
30506997041,20cyclictest1119-21cat08:41:480
3050699703,29cyclictest15-21ksoftirqd/011:00:270
3050699703,29cyclictest15-21ksoftirqd/011:00:270
30506997030,9cyclictest181rcu_preempt12:13:010
30506997030,9cyclictest181rcu_preempt12:13:010
30506997028,11cyclictest0-21swapper/007:42:390
30506997028,11cyclictest0-21swapper/007:42:390
30512996949,13cyclictest20132-21apt-key08:01:501
30506996937,10cyclictest181rcu_preempt08:47:180
30512996849,13cyclictest352-21runrttasks09:12:001
30512996848,13cyclictest352-21runrttasks10:22:181
30506996813,29cyclictest15-21ksoftirqd/011:50:570
30506996813,29cyclictest15-21ksoftirqd/011:50:570
3052299674,41cyclictest0-21swapper/307:27:043
30512996752,10cyclictest10698-21cstates10:52:031
30512996750,10cyclictest30751-21runrttasks06:57:041
30512996748,13cyclictest19226-21munin-run11:06:451
30512996746,15cyclictest31891-21munin-plugin-st08:36:481
30512996746,14cyclictest7894-21latency_hist11:41:481
30512996739,20cyclictest3712-21grep08:47:221
3052299663,40cyclictest14069-21taskset11:51:563
30522996612,40cyclictest0-21swapper/312:22:163
3051299665,23cyclictest31-21ksoftirqd/109:36:211
30512996650,10cyclictest22735-21cron12:06:451
30512996648,13cyclictest14571-21kworker/u17:2+events_unbound10:21:451
30512996647,14cyclictest451-21idleruntime-cro09:41:451
30512996637,20cyclictest11178-21grep07:32:231
30512996550,9cyclictest5910-21diskmemload09:22:011
30512996550,10cyclictest5943-21ntp_kernel_pll_07:18:121
30512996548,11cyclictest16207-21kernelversion10:07:101
30512996546,11cyclictest7541-21/usr/sbin/munin10:47:141
30512996545,14cyclictest4333-21sh11:35:431
30512996545,14cyclictest4333-21sh11:35:431
30512996545,14cyclictest20202-21latency_hist08:01:501
30512996545,13cyclictest8601-21apt-key07:26:511
30512996545,13cyclictest544-21cron08:56:461
30512996544,7cyclictest181rcu_preempt09:07:311
30512996539,18cyclictest9000-21kworker/u18:3+nfsiod10:59:411
30512996539,18cyclictest9000-21kworker/u18:3+nfsiod10:59:411
30512996531,23cyclictest25736-21fschecks_count11:17:071
30512996531,23cyclictest25736-21fschecks_count11:17:071
3051299652,27cyclictest31-21ksoftirqd/110:42:161
30512996516,10cyclictest0-21swapper/110:27:191
30512996516,10cyclictest0-21swapper/110:27:191
30512996514,17cyclictest28027-21unixbench_multi08:23:021
30512996434,21cyclictest24615-21ssh09:27:111
3051299642,30cyclictest31-21ksoftirqd/108:38:271
3051299642,30cyclictest31-21ksoftirqd/108:05:521
30512996420,8cyclictest301ktimers/111:57:171
30512996348,8cyclictest0-21swapper/109:42:091
30512996315,13cyclictest32275-21munin-node07:01:561
30512996315,13cyclictest32275-21munin-node07:01:561
30512996313,37cyclictest277-21dbus-daemon07:16:471
30512996313,37cyclictest277-21dbus-daemon07:16:471
3051299631,30cyclictest31-21ksoftirqd/108:11:131
30512996247,8cyclictest0-21swapper/110:37:171
30512996213,15cyclictest352-21runrttasks11:46:581
30512996213,15cyclictest352-21runrttasks11:46:581
109762620,3sleep30-21swapper/311:46:493
3052299616,36cyclictest0-21swapper/307:17:033
3051299619,21cyclictest1677-21kernelversion08:42:121
30512996134,19cyclictest23084-21nfs4_client11:12:131
30512996132,20cyclictest14988-21modprobe07:46:461
30512996132,20cyclictest14988-21modprobe07:46:461
30512996114,14cyclictest25386-21/usr/sbin/munin08:17:081
3034426114,30sleep30-21swapper/306:56:473
3052299603,36cyclictest917-21kworker/3:1+events10:52:113
3051299604,43cyclictest17180-21fschecks_time07:52:091
3051299604,25cyclictest31-21ksoftirqd/108:26:511
30512996030,20cyclictest16626-21modprobe07:51:451
30512996015,9cyclictest4160-21/usr/sbin/munin09:47:091
3052299599,32cyclictest0-21swapper/308:02:013
30512995928,24cyclictest24303-21switchtime08:12:201
30512995913,10cyclictest0-21swapper/110:02:311
3052299584,41cyclictest9865-21chrt09:02:183
3052299582,37cyclictest22239-21chrt09:22:203
30512995842,9cyclictest0-21swapper/111:56:461
3052299573,40cyclictest29638-21taskset12:17:093
3052299564,33cyclictest13698-21taskset10:57:043
3052299564,33cyclictest13698-21taskset10:57:043
3052299563,39cyclictest20827-21chrt09:21:353
3052299563,38cyclictest1538-21chrt08:42:093
3052299554,36cyclictest4919-21taskset07:16:473
3052299554,36cyclictest4919-21taskset07:16:473
3052299553,41cyclictest14497-21taskset10:04:073
3052299552,40cyclictest23675-21taskset12:07:163
3052299552,36cyclictest11293-21taskset09:58:323
3052299542,39cyclictest26020-21taskset08:17:233
3052299533,30cyclictest4340-21taskset09:47:133
3052299532,37cyclictest25728-21chrt11:17:073
3052299532,37cyclictest25728-21chrt11:17:073
3052299524,34cyclictest30096-21chrt11:23:473
3052299523,36cyclictest26192-21chrt09:29:463
3052299523,34cyclictest4940-21chrt11:36:483
3052299523,34cyclictest4940-21chrt11:36:483
3052299523,34cyclictest29288-21chrt10:28:313
3052299523,34cyclictest29288-21chrt10:28:313
3052299523,33cyclictest1638-21taskset07:06:473
3052299523,33cyclictest1638-21taskset07:06:473
3052299522,36cyclictest8829-21chrt09:01:373
3052299522,35cyclictest8813-21chrt09:54:593
3052299522,34cyclictest29110-21chrt09:34:323
3052299514,31cyclictest7644-21chrt10:47:033
3052299513,33cyclictest2036-21taskset07:07:033
3052299513,32cyclictest31919-21chrt08:36:463
3052299513,30cyclictest917-21kworker/3:1+events07:42:003
3052299513,30cyclictest917-21kworker/3:1+events07:42:003
3052299512,35cyclictest17010-21chrt07:52:033
3052299512,34cyclictest4840-21chrt08:52:093
3052299504,34cyclictest26357-21chrt10:23:453
3052299503,35cyclictest19210-21chrt11:06:453
3052299503,34cyclictest19044-21chrt10:12:093
3052299503,34cyclictest19044-21chrt10:12:093
3052299502,37cyclictest22394-21chrt10:17:163
3052299502,37cyclictest22038-21chrt08:07:023
3052299502,36cyclictest16574-21taskset10:07:193
3052299502,34cyclictest14797-21taskset09:11:263
3052299493,32cyclictest15398-21chrt09:12:033
3052299492,36cyclictest31463-21taskset06:57:233
3052299492,35cyclictest23672-21chrt11:12:293
3052299492,35cyclictest20725-21chrt11:07:343
3052299492,35cyclictest20725-21chrt11:07:343
3052299492,34cyclictest5376-21chrt11:37:093
3052299492,33cyclictest18306-21taskset11:57:483
3052299492,32cyclictest18706-21chrt07:57:103
3052299492,32cyclictest18706-21chrt07:57:103
3052299483,34cyclictest30854-21chrt09:37:163
3052299483,34cyclictest24375-21taskset08:12:213
3052299482,35cyclictest11708-21chrt11:47:183
3052299482,35cyclictest11708-21chrt11:47:183
3052299482,34cyclictest15582-21chrt07:47:093
3052299473,31cyclictest20881-21chrt12:02:223
3052299473,29cyclictest4431-21taskset08:51:493
3052299472,35cyclictest6390-21chrt10:44:283
3052299472,31cyclictest11873-21chrt07:36:483
3052299472,31cyclictest1119-21chrt11:30:043
3052299463,30cyclictest3507-21chrt10:39:463
3052299462,29cyclictest12281-21chrt07:37:093
3052299452,28cyclictest8402-21chrt07:26:483
3052299442,30cyclictest1646-21taskset09:42:233
3052299392,22cyclictest1189-21chrt08:41:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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