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2026-05-20 - 19:00
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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 Wed May 20, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14624220811,94sleep214702-21/usr/sbin/munin06:56:072
14786213511,96sleep114856-21tune2fs06:56:141
1489721049,22sleep30-21swapper/306:56:163
16062991023,72cyclictest30211-21apt-get10:06:150
16062991023,72cyclictest30211-21apt-get10:06:150
160679910057,38cyclictest16053-21cyclictest10:35:211
16067999933,37cyclictest0-21swapper/110:00:481
1606299998,78cyclictest10922-21apt-get11:21:030
1606299998,71cyclictest12419-21apt-get10:31:040
16062999942,13cyclictest16053-21cyclictest10:17:370
16067999882,11cyclictest16053-21cyclictest08:41:091
16071999647,41cyclictest0-21swapper/211:16:032
1606299964,71cyclictest2613-21apt-get12:01:010
21102950,8sleep10-21swapper/107:55:501
16067999551,36cyclictest15740-21kernelversion08:36:121
16062999341,11cyclictest181rcu_preempt09:51:080
16062999258,11cyclictest181rcu_preempt11:16:050
1606299923,47cyclictest21638-21apt-get10:46:020
1606299923,47cyclictest21638-21apt-get10:46:020
16071999143,40cyclictest0-21swapper/212:00:582
16062999164,18cyclictest17847-21latency_hist07:05:510
16062999058,24cyclictest21933-21apt-key10:45:510
16071998969,10cyclictest0-21swapper/210:45:492
16071998967,16cyclictest23960-21unixbench_singl11:41:232
16071998966,16cyclictest16053-21cyclictest09:46:122
16067998949,32cyclictest22568-21kworker/u17:2-rpciod11:51:201
16067998870,9cyclictest0-21swapper/112:26:221
16071998744,35cyclictest0-21swapper/209:11:102
16067998770,10cyclictest28421-21diskmemload11:50:301
16067998770,10cyclictest28421-21diskmemload11:50:301
16062998750,27cyclictest30155-21kworker/u17:1+nfsiod11:03:050
16062998749,13cyclictest181rcu_preempt10:05:490
16062998749,13cyclictest181rcu_preempt10:05:490
16067998643,36cyclictest277-21dbus-daemon09:30:481
16067998643,36cyclictest277-21dbus-daemon09:30:481
1606799862,44cyclictest26001-21chrt09:05:161
16062998614,16cyclictest15-21ksoftirqd/007:24:250
16071998570,10cyclictest19676-21snmpd11:21:572
16067998569,10cyclictest16053-21cyclictest07:01:251
16067998567,12cyclictest2374-21systemd-journal10:09:381
16067998567,12cyclictest2374-21systemd-journal10:09:381
16067998546,33cyclictest23213-21diskmemload12:17:451
16067998546,33cyclictest23213-21diskmemload12:17:451
16067998543,35cyclictest0-21swapper/109:11:201
16067998542,37cyclictest16053-21cyclictest10:51:121
16067998540,38cyclictest23213-21diskmemload10:27:511
16062998551,27cyclictest16053-21cyclictest12:06:090
151492857,54sleep015154-21ntpq06:56:250
16067998466,11cyclictest0-21swapper/109:23:391
16067998463,12cyclictest0-21swapper/107:05:591
16067998456,20cyclictest26820-21fschecks_time09:06:091
16067998433,43cyclictest0-21swapper/110:19:551
1606299847,46cyclictest15-21ksoftirqd/008:11:200
16062998434,10cyclictest181rcu_preempt08:26:190
1607199833,71cyclictest0-21swapper/210:20:572
1607199833,57cyclictest22279-21ssh10:46:132
1607199833,57cyclictest22279-21ssh10:46:132
16067998342,35cyclictest23213-21diskmemload11:12:591
16062998358,19cyclictest1836-21cstates11:06:040
16062998357,18cyclictest298-21in:imuxsock11:00:480
16062998357,18cyclictest298-21in:imuxsock11:00:480
16062998351,28cyclictest58-21kcompactd010:15:290
16071998258,14cyclictest277-21dbus-daemon07:15:482
16071998258,14cyclictest277-21dbus-daemon07:15:482
1607199823,70cyclictest26991-21apt-get10:00:592
1607199823,70cyclictest26991-21apt-get10:00:592
16071998234,41cyclictest0-21swapper/211:11:082
16067998263,14cyclictest2374-21systemd-journal09:34:431
16067998262,10cyclictest0-21swapper/108:11:221
16067998261,11cyclictest0-21swapper/107:46:091
16067998261,11cyclictest0-21swapper/107:46:091
16067998242,33cyclictest23213-21diskmemload11:01:231
1606799823,70cyclictest0-21swapper/111:30:591
1606799823,70cyclictest0-21swapper/111:30:591
1606799823,69cyclictest0-21swapper/108:06:001
16062998245,17cyclictest181rcu_preempt08:31:050
16062998232,27cyclictest16053-21cyclictest09:43:570
16062998229,11cyclictest181rcu_preempt07:31:150
16071998160,10cyclictest0-21swapper/209:26:202
16071998160,10cyclictest0-21swapper/209:26:202
1607199815,67cyclictest0-21swapper/208:46:032
1607199814,69cyclictest0-21swapper/208:06:002
16071998133,39cyclictest0-21swapper/209:55:592
16067998162,11cyclictest0-21swapper/111:00:501
16067998162,11cyclictest0-21swapper/111:00:501
16067998153,11cyclictest181rcu_preempt11:25:191
16067998140,34cyclictest23213-21diskmemload09:47:101
1606799812,35cyclictest16711-21latency_hist11:30:491
16062998153,20cyclictest21756-21latency_hist08:55:500
16062998152,19cyclictest17219-21fschecks_time11:31:090
16062998152,19cyclictest17219-21fschecks_time11:31:090
16062998148,22cyclictest26573-21latency_hist07:30:510
16062998147,28cyclictest10705-21ssh10:26:220
16062998145,8cyclictest181rcu_preempt09:16:360
16062998145,8cyclictest181rcu_preempt09:16:360
1607199804,68cyclictest0-21swapper/208:16:032
1607199804,67cyclictest0-21swapper/212:20:572
1607199804,65cyclictest0-21swapper/207:51:012
1607199803,69cyclictest0-21swapper/212:25:592
16067998058,13cyclictest0-21swapper/108:26:201
16067998058,10cyclictest0-21swapper/108:46:051
16067998036,38cyclictest23163-21fschecks_time11:41:071
1606299805,63cyclictest18046-21wc12:26:130
16062998052,9cyclictest181rcu_preempt07:36:130
16062998047,11cyclictest181rcu_preempt11:37:210
1607199795,67cyclictest16273-21apt-get07:01:052
1607199794,68cyclictest0-21swapper/207:25:582
16071997937,8cyclictest181rcu_preempt08:51:112
1607199793,70cyclictest0-21swapper/209:31:012
16071997934,37cyclictest0-21swapper/209:16:182
16071997934,37cyclictest0-21swapper/209:16:182
16067997938,33cyclictest3267-21kernelversion12:01:481
16067997933,39cyclictest0-21swapper/111:36:061
16062997957,14cyclictest26709-21ssh09:06:070
16062997946,28cyclictest16053-21cyclictest12:25:180
16062997940,8cyclictest181rcu_preempt08:41:090
16062997937,16cyclictest181rcu_preempt11:26:470
16062997937,15cyclictest181rcu_preempt09:15:340
16062997931,13cyclictest181rcu_preempt07:16:440
16071997858,15cyclictest16053-21cyclictest08:45:142
16071997857,12cyclictest0-21swapper/207:06:222
1607199785,64cyclictest0-21swapper/211:05:572
1607199784,69cyclictest0-21swapper/208:36:022
16071997840,30cyclictest0-21swapper/210:30:492
1607199783,70cyclictest0-21swapper/208:25:572
16071997828,42cyclictest0-21swapper/207:49:452
16071997828,42cyclictest0-21swapper/207:49:452
16067997863,8cyclictest0-21swapper/108:56:201
16067997860,11cyclictest0-21swapper/107:36:091
16067997854,16cyclictest17330-21latency_hist12:25:481
16067997840,31cyclictest0-21swapper/110:46:091
16067997840,31cyclictest0-21swapper/110:46:091
16067997839,32cyclictest22552-21sh09:52:361
16062997855,9cyclictest181rcu_preempt09:38:130
16062997855,9cyclictest181rcu_preempt09:38:130
16062997839,16cyclictest181rcu_preempt08:21:210
16062997839,16cyclictest181rcu_preempt08:21:210
16062997837,9cyclictest181rcu_preempt11:55:420
16071997757,14cyclictest16053-21cyclictest07:45:472
16071997751,22cyclictest21810-21kworker/u17:1-ext4-rsv-conversion07:16:252
1607199774,67cyclictest0-21swapper/210:15:582
16071997746,21cyclictest352-21runrttasks08:21:122
16071997746,21cyclictest352-21runrttasks08:21:122
16071997730,39cyclictest0-21swapper/211:36:162
1606799778,58cyclictest4085-21apt-get08:01:051
16067997757,10cyclictest0-21swapper/111:16:131
1606799773,63cyclictest0-21swapper/108:20:581
1606799773,63cyclictest0-21swapper/108:20:581
16062997745,14cyclictest181rcu_preempt08:36:500
16062997745,10cyclictest181rcu_preempt09:03:440
16062997741,12cyclictest181rcu_preempt07:11:120
16062997741,12cyclictest181rcu_preempt07:11:120
16062997739,17cyclictest181rcu_preempt12:16:380
16062997739,17cyclictest181rcu_preempt12:16:380
16062997735,12cyclictest181rcu_preempt09:59:280
16062997733,13cyclictest181rcu_preempt09:33:570
285392760,7sleep028541-21apt11:50:470
285392760,7sleep028541-21apt11:50:470
16071997632,37cyclictest0-21swapper/209:01:092
16071997626,42cyclictest0-21swapper/209:37:212
16071997626,42cyclictest0-21swapper/209:37:212
16067997657,9cyclictest0-21swapper/109:36:191
16067997657,9cyclictest0-21swapper/109:36:191
16067997656,13cyclictest0-21swapper/112:06:221
16067997636,33cyclictest0-21swapper/107:11:031
16067997636,33cyclictest0-21swapper/107:11:031
16062997648,10cyclictest181rcu_preempt11:56:220
16062997645,10cyclictest181rcu_preempt09:25:590
16062997645,10cyclictest181rcu_preempt09:25:590
16062997640,17cyclictest181rcu_preempt08:57:030
16062997639,12cyclictest31747-21idleruntime07:46:110
16062997639,12cyclictest31747-21idleruntime07:46:110
1606299763,42cyclictest352-21runrttasks09:48:590
16062997633,9cyclictest181rcu_preempt08:20:490
16071997557,9cyclictest0-21swapper/211:51:032
16071997531,33cyclictest0-21swapper/212:00:522
1607199752,64cyclictest0-21swapper/208:11:022
1607199752,60cyclictest13789-21apt-get08:30:592
16067997560,8cyclictest0-21swapper/107:16:511
1606799753,67cyclictest0-21swapper/111:06:021
1606799752,64cyclictest0-21swapper/108:31:001
16062997550,11cyclictest181rcu_preempt09:22:100
16062997536,17cyclictest181rcu_preempt10:39:460
1606299753,44cyclictest15-21ksoftirqd/012:11:470
16062997516,13cyclictest15-21ksoftirqd/010:21:220
1607199745,64cyclictest0-21swapper/211:01:002
1607199744,60cyclictest15969-21apt-get10:36:022
1607199743,66cyclictest0-21swapper/212:05:562
1607199743,61cyclictest25201-21/usr/sbin/munin10:51:122
16071997432,35cyclictest0-21swapper/209:21:152
16071997431,35cyclictest0-21swapper/212:11:222
1607199742,64cyclictest0-21swapper/207:36:022
16067997456,10cyclictest0-21swapper/107:45:501
16067997429,39cyclictest0-21swapper/110:21:231
1606799742,67cyclictest0-21swapper/109:15:581
1606799742,67cyclictest0-21swapper/109:15:581
16067997422,45cyclictest2374-21systemd-journal10:43:391
16062997450,10cyclictest181rcu_preempt07:56:430
16062997450,10cyclictest181rcu_preempt07:56:430
16062997447,10cyclictest181rcu_preempt11:14:490
1606299742,42cyclictest15-21ksoftirqd/008:10:410
1607199734,64cyclictest0-21swapper/211:46:012
1607199734,64cyclictest0-21swapper/211:46:012
1607199733,58cyclictest16929-21apt-get11:30:592
1607199733,58cyclictest16929-21apt-get11:30:592
16071997328,37cyclictest0-21swapper/209:41:092
16067997358,9cyclictest0-21swapper/108:16:161
16067997317,12cyclictest181rcu_preempt07:31:081
1607199724,63cyclictest0-21swapper/210:10:592
1607199724,63cyclictest0-21swapper/208:01:552
1607199724,60cyclictest21021-21apt-get09:50:582
16071997229,38cyclictest0-21swapper/210:06:052
16071997229,38cyclictest0-21swapper/210:06:052
1606799723,64cyclictest0-21swapper/109:40:591
1606799723,62cyclictest0-21swapper/107:55:581
1606799723,62cyclictest0-21swapper/107:55:581
1606799723,61cyclictest0-21swapper/110:00:591
1606799723,61cyclictest0-21swapper/110:00:591
16067997228,36cyclictest0-21swapper/107:21:041
16062997248,9cyclictest181rcu_preempt07:05:520
16062997237,13cyclictest181rcu_preempt08:02:010
16062997237,13cyclictest181rcu_preempt07:41:190
16062997236,14cyclictest181rcu_preempt07:51:030
1607199714,62cyclictest0-21swapper/207:56:022
1607199714,62cyclictest0-21swapper/207:56:022
1607199713,63cyclictest0-21swapper/209:05:572
16071997131,33cyclictest0-21swapper/207:21:162
16071997125,39cyclictest0-21swapper/212:16:032
16071997125,39cyclictest0-21swapper/212:16:032
16071997124,34cyclictest0-21swapper/210:33:452
16067997124,41cyclictest0-21swapper/110:40:471
16062997137,8cyclictest181rcu_preempt10:51:100
16062997131,12cyclictest181rcu_preempt11:45:070
1607199703,57cyclictest28207-21apt-get10:55:592
1607199703,57cyclictest28207-21apt-get10:55:592
16071997028,35cyclictest0-21swapper/211:30:462
16067997050,12cyclictest0-21swapper/110:11:211
16067997017,14cyclictest8591-21acpi12:10:561
1606299702,49cyclictest18804-21fschecks_count08:46:090
16067996951,11cyclictest0-21swapper/111:56:081
16071996817,42cyclictest22560-21grep08:56:222
1607199673,55cyclictest27242-21/usr/sbin/munin07:31:192
16067996729,31cyclictest0-21swapper/108:51:111
1607799662,47cyclictest13320-21chrt12:18:093
1607799662,47cyclictest13320-21chrt12:18:093
1606799662,55cyclictest0-21swapper/107:25:581
16077996527,27cyclictest10736-21chrt11:20:513
16077996428,22cyclictest4741-21chrt11:10:583
16077996425,25cyclictest9030-21taskset08:16:053
16077996332,20cyclictest24007-21chrt09:55:563
16077996327,25cyclictest6053-21taskset08:06:133
16077996226,24cyclictest19378-21chrt10:41:113
16077996126,23cyclictest7125-21taskset09:26:263
16077996126,23cyclictest7125-21taskset09:26:263
16077996125,24cyclictest17179-21taskset11:31:083
16077996125,24cyclictest17179-21taskset11:31:083
16077996123,27cyclictest628-21chrt07:50:583
16077996029,21cyclictest2626-21chrt12:00:593
16077996028,21cyclictest22629-21chrt08:56:233
16077996028,20cyclictest25626-21chrt07:26:193
16077996027,21cyclictest8583-21chrt10:23:283
16077996027,21cyclictest5007-21chrt09:23:513
16077996027,21cyclictest19150-21chrt08:46:183
16077996024,24cyclictest17398-21taskset10:37:183
16077995928,21cyclictest18278-21chrt12:26:203
16077995927,20cyclictest2417-21chrt07:56:083
16077995927,20cyclictest2417-21chrt07:56:083
16077995926,22cyclictest8637-21chrt08:15:283
16077995926,22cyclictest28166-21chrt10:55:543
16077995926,22cyclictest28166-21chrt10:55:543
16077995926,21cyclictest18201-21chrt07:05:583
16077995925,22cyclictest21986-21taskset07:16:353
16077995925,21cyclictest16454-21chrt11:30:273
16077995925,21cyclictest10924-21chrt12:14:493
16077995923,24cyclictest633-21taskset11:03:413
16077995923,24cyclictest5314-21taskset10:17:413
16077995923,24cyclictest25506-21taskset09:03:523
16077995923,23cyclictest29133-21taskset09:10:413
16077995923,23cyclictest19280-21taskset09:46:533
16077995923,23cyclictest13387-21taskset09:37:083
16077995923,23cyclictest13387-21taskset09:37:083
16077995923,20cyclictest1418-21chrt09:17:103
16077995923,20cyclictest1418-21chrt09:17:103
16077995922,25cyclictest27362-21taskset10:54:203
1607799584,36cyclictest14369-21taskset08:31:203
16077995827,20cyclictest31463-21chrt07:46:043
16077995827,20cyclictest31463-21chrt07:46:043
16077995827,20cyclictest30304-21chrt10:06:143
16077995827,20cyclictest30304-21chrt10:06:143
16077995826,22cyclictest4552-21chrt11:10:503
16077995826,21cyclictest32035-21chrt11:56:043
16077995826,20cyclictest5465-21chrt08:05:483
16077995826,20cyclictest15030-21chrt09:41:013
16077995825,20cyclictest27085-21chrt07:31:133
16077995824,22cyclictest23821-21chrt10:47:523
16077995824,22cyclictest23821-21chrt10:47:523
16077995824,22cyclictest21250-21chrt08:51:373
16077995824,22cyclictest15712-21chrt12:21:293
16077995824,21cyclictest31673-21chrt09:14:223
16077995824,21cyclictest10868-21chrt09:33:273
16077995823,22cyclictest20480-21taskset07:11:173
16077995823,22cyclictest20480-21taskset07:11:173
16077995822,23cyclictest27930-21taskset11:49:073
16077995822,23cyclictest27930-21taskset11:49:073
16077995725,20cyclictest28825-21chrt07:36:203
16077995725,20cyclictest21047-21chrt09:51:023
16077995723,23cyclictest16422-21chrt07:01:083
16077995723,21cyclictest13716-21chrt10:31:353
16077995722,24cyclictest21887-21taskset11:38:543
16077995625,22cyclictest11277-21chrt11:21:563
16077995624,21cyclictest18115-21chrt08:42:583
16077995624,20cyclictest6860-21chrt12:06:513
16077995624,20cyclictest23838-21chrt11:41:223
16077995624,20cyclictest1961-21chrt10:11:373
16077995624,19cyclictest23533-21chrt07:21:053
16077995623,22cyclictest29503-21chrt11:51:183
16077995526,20cyclictest27195-21chrt10:01:073
16077995526,20cyclictest27195-21chrt10:01:073
16077995524,20cyclictest10527-21chrt10:26:203
16077995523,21cyclictest12155-21taskset08:25:573
16077995523,19cyclictest11573-21chrt08:21:523
16077995523,19cyclictest11573-21chrt08:21:523
16077995424,19cyclictest29828-21chrt07:40:573
16077995322,19cyclictest16490-21chrt08:37:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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