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2026-04-23 - 02:50
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackbslot6.osadl.org (updated Wed Apr 22, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1937221820,4sleep22574099cyclictest11:27:532
1068911160,8ptp4l31843-21kworker/3:108:20:563
149852830,5sleep12573199cyclictest12:28:071
192302740,5sleep119232-21irqrtprio09:12:511
25748997156,7cyclictest41-21ksoftirqd/313:02:493
25748996954,6cyclictest41-21ksoftirqd/310:37:463
25748996855,6cyclictest41-21ksoftirqd/309:52:453
25748996752,7cyclictest41-21ksoftirqd/313:17:493
25748996653,6cyclictest41-21ksoftirqd/310:32:453
25748996652,6cyclictest41-21ksoftirqd/309:57:453
292632640,2sleep10-21swapper/111:05:001
25748996449,6cyclictest41-21ksoftirqd/313:47:483
13472640,2sleep10-21swapper/113:19:581
25748996149,6cyclictest41-21ksoftirqd/310:02:453
312812570,1sleep30-21swapper/312:45:313
106891570,1ptp4l401ktimersoftd/311:55:553
106891570,1ptp4l401ktimersoftd/310:29:443
2573199568,7cyclictest7950-21sed12:22:371
2573199567,17cyclictest21759-21rm12:36:011
7112550,2sleep0708-21ssh12:47:490
106891550,1ptp4l401ktimersoftd/310:12:493
106891550,1ptp4l401ktimersoftd/310:12:493
94092540,3sleep02572499cyclictest10:44:430
25731995412,7cyclictest25-21ksoftirqd/111:42:571
105352540,2sleep00-21swapper/011:52:240
52462530,3sleep125715-21cyclictest09:52:491
25748995325,3cyclictest41-21ksoftirqd/312:32:563
2573199537,8cyclictest26959-21ps13:13:001
2573199537,8cyclictest22643-21/usr/sbin/munin13:08:081
2573199527,8cyclictest26741-21sed12:07:551
2573199516,8cyclictest3462-21unixbench_singl10:38:041
2573199516,7cyclictest21325-21acpi10:57:441
25748995038,5cyclictest41-21ksoftirqd/308:27:423
2573199507,7cyclictest32406-21irqrtprio08:32:511
2573199507,7cyclictest32406-21irqrtprio08:32:511
2573199506,8cyclictest9382-21sed08:52:491
2573199506,8cyclictest9232-21grep11:17:501
2573199506,8cyclictest23996-21sed12:37:551
2573199506,7cyclictest21000-21expr12:02:491
2573199505,8cyclictest2668-21cut09:47:461
2573199500,12cyclictest17950-21apt-config09:12:331
2573199500,12cyclictest13341-21cstates13:32:511
25724995041,4cyclictest9-21ksoftirqd/011:17:460
25748994935,6cyclictest41-21ksoftirqd/308:52:423
2573199497,8cyclictest19322-21awk11:27:531
2573199497,7cyclictest30062-21irqrtprio10:32:521
2573199496,8cyclictest23474-21gltestperf13:42:541
2573199496,8cyclictest23474-21gltestperf13:42:541
2573199493,9cyclictest15646-21latency_hist09:07:331
25748994839,4cyclictest41-21ksoftirqd/312:47:423
2573199487,7cyclictest6997-21grep12:52:581
2572499482,7cyclictest25715-21cyclictest08:22:310
2573199478,7cyclictest18069-21rm11:58:291
2573199478,7cyclictest18069-21rm11:58:291
2573199476,7cyclictest7448-21expr09:57:461
2573199475,8cyclictest4259-21fschecks_time08:42:471
2573199475,8cyclictest29461-21expr08:27:441
2573199473,7cyclictest29788-21awk12:43:071
25724994736,6cyclictest9-21ksoftirqd/008:57:440
25724994714,4cyclictest9-21ksoftirqd/013:27:550
106891470,1ptp4l401ktimersoftd/311:52:023
25748994619,5cyclictest41-21ksoftirqd/311:07:593
2573199463,7cyclictest16778-21irqrtprio13:02:561
25724994637,5cyclictest9-21ksoftirqd/013:32:490
25724994636,5cyclictest9-21ksoftirqd/013:07:510
25748994523,6cyclictest41-21ksoftirqd/310:57:483
25748994518,4cyclictest41-21ksoftirqd/313:32:533
2573199456,8cyclictest12088-21latency11:52:561
2573199455,7cyclictest29358-21timerandwakeup09:33:011
25731994515,9cyclictest25-21ksoftirqd/111:13:161
25724994518,4cyclictest9-21ksoftirqd/012:57:540
19712450,2sleep00-21swapper/011:10:210
2574899442,8cyclictest41-21ksoftirqd/311:12:513
25748994421,4cyclictest41-21ksoftirqd/313:29:003
2573199444,7cyclictest14588-21cstates10:12:471
2573199444,7cyclictest14588-21cstates10:12:471
2573199444,7cyclictest12232-21cstates10:07:481
25748994321,3cyclictest41-21ksoftirqd/313:12:583
2573199438,6cyclictest25-21ksoftirqd/110:02:541
2573199431,7cyclictest0-21swapper/110:23:021
25724994337,3cyclictest9-21ksoftirqd/011:42:400
2574899425,3cyclictest121rcu_preempt11:17:533
25748994221,3cyclictest41-21ksoftirqd/312:38:063
25748994210,4cyclictest41-21ksoftirqd/308:43:003
2574899414,7cyclictest41-21ksoftirqd/312:28:043
2574899414,3cyclictest121rcu_preempt13:42:383
25748994119,7cyclictest41-21ksoftirqd/311:27:353
25748994117,4cyclictest41-21ksoftirqd/312:22:523
2573199416,5cyclictest25-21ksoftirqd/112:23:051
2573199415,8cyclictest13178-21timerwakeupswit10:48:031
2573199414,6cyclictest25-21ksoftirqd/113:27:531
2573199414,5cyclictest25-21ksoftirqd/109:42:331
2573199411,6cyclictest0-21swapper/110:30:351
25724994126,4cyclictest9-21ksoftirqd/009:47:510
25724994121,5cyclictest9-21ksoftirqd/012:23:040
25724994119,10cyclictest9-21ksoftirqd/012:38:050
2574899404,3cyclictest121rcu_preempt13:00:393
25748994031,5cyclictest41-21ksoftirqd/309:32:453
25748994026,6cyclictest41-21ksoftirqd/313:45:343
25748994026,6cyclictest41-21ksoftirqd/313:45:343
2573199403,6cyclictest25-21ksoftirqd/112:59:071
2573199402,6cyclictest25-21ksoftirqd/111:08:011
25724994016,4cyclictest9-21ksoftirqd/010:57:530
25748993915,4cyclictest41-21ksoftirqd/312:53:123
2573199396,6cyclictest25-21ksoftirqd/112:16:541
25724993933,3cyclictest9-21ksoftirqd/011:32:480
25724993920,5cyclictest9-21ksoftirqd/010:37:500
106891390,1ptp4l401ktimersoftd/311:40:163
106891390,1ptp4l401ktimersoftd/311:32:313
106891390,0ptp4l401ktimersoftd/312:04:473
25748993824,11cyclictest41-21ksoftirqd/312:17:543
25748993821,6cyclictest41-21ksoftirqd/308:37:433
25748993815,7cyclictest41-21ksoftirqd/313:07:513
25748993815,4cyclictest41-21ksoftirqd/311:45:213
2573199383,6cyclictest25-21ksoftirqd/113:23:401
2573199383,6cyclictest25-21ksoftirqd/108:57:501
2573199383,5cyclictest25-21ksoftirqd/111:37:131
2573199383,5cyclictest25-21ksoftirqd/109:45:391
25731993813,8cyclictest25-21ksoftirqd/112:49:341
25724993822,4cyclictest9-21ksoftirqd/011:27:510
25724993817,8cyclictest9-21ksoftirqd/011:53:060
25724993816,4cyclictest9-21ksoftirqd/010:03:020
106891380,1ptp4l401ktimersoftd/310:46:073
106891380,1ptp4l401ktimersoftd/308:34:313
106891380,1ptp4l401ktimersoftd/308:34:313
25748993727,4cyclictest41-21ksoftirqd/311:57:523
25748993727,4cyclictest41-21ksoftirqd/311:57:523
25748993725,9cyclictest41-21ksoftirqd/309:42:513
25748993724,3cyclictest41-21ksoftirqd/308:22:513
25748993715,9cyclictest41-21ksoftirqd/308:57:513
25748993713,4cyclictest41-21ksoftirqd/310:52:413
2572499374,3cyclictest121rcu_preempt09:32:330
25724993726,3cyclictest9-21ksoftirqd/013:17:490
25724993724,3cyclictest9-21ksoftirqd/012:07:530
2572499372,3cyclictest121rcu_preempt08:37:480
25724993723,3cyclictest9-21ksoftirqd/009:38:030
25724993721,13cyclictest9-21ksoftirqd/010:52:470
2572499371,3cyclictest121rcu_preempt12:22:370
2572499371,3cyclictest121rcu_preempt10:07:480
106891370,1ptp4l401ktimersoftd/312:15:303
106891370,1ptp4l401ktimersoftd/312:09:213
106891370,1ptp4l401ktimersoftd/311:37:063
106891370,1ptp4l401ktimersoftd/311:05:213
106891370,1ptp4l401ktimersoftd/310:49:063
106891370,1ptp4l401ktimersoftd/310:22:403
106891370,1ptp4l401ktimersoftd/309:27:493
106891370,1ptp4l401ktimersoftd/309:18:523
25748993622,6cyclictest41-21ksoftirqd/310:07:533
2573199364,5cyclictest25-21ksoftirqd/111:48:111
2573199364,5cyclictest25-21ksoftirqd/111:23:471
2573199363,5cyclictest25-21ksoftirqd/110:44:011
2573199363,5cyclictest25-21ksoftirqd/109:21:381
25731993614,8cyclictest25-21ksoftirqd/111:40:051
25724993630,4cyclictest9-21ksoftirqd/012:47:380
25724993630,3cyclictest9-21ksoftirqd/010:47:570
25724993614,4cyclictest9-21ksoftirqd/012:02:280
25724993614,4cyclictest9-21ksoftirqd/012:02:280
25724993611,4cyclictest9-21ksoftirqd/008:32:550
25724993611,4cyclictest9-21ksoftirqd/008:32:550
106891360,1ptp4l401ktimersoftd/313:26:443
25748993523,3cyclictest41-21ksoftirqd/308:47:533
25748993513,4cyclictest41-21ksoftirqd/309:02:463
2573199352,5cyclictest25-21ksoftirqd/113:52:291
25731993513,6cyclictest25-21ksoftirqd/110:52:481
2572499355,7cyclictest121rcu_preempt09:07:470
2572499354,3cyclictest121rcu_preempt13:48:050
25724993528,4cyclictest9-21ksoftirqd/009:12:370
25724993522,3cyclictest9-21ksoftirqd/009:43:030
25724993517,4cyclictest9-21ksoftirqd/012:12:570
2572499350,3cyclictest121rcu_preempt12:33:000
238192357,14sleep10-21swapper/108:17:451
106891350,13ptp4l401ktimersoftd/309:13:063
25748993428,3cyclictest41-21ksoftirqd/310:17:463
25748993428,3cyclictest41-21ksoftirqd/309:47:533
25748993421,10cyclictest41-21ksoftirqd/309:12:333
2573199342,5cyclictest25-21ksoftirqd/108:51:471
2572499345,3cyclictest121rcu_preempt08:52:520
2572499344,2cyclictest121rcu_preempt13:38:030
25724993430,2cyclictest9-21ksoftirqd/010:22:450
25724993428,3cyclictest9-21ksoftirqd/011:37:480
2572499342,6cyclictest121rcu_preempt13:12:590
25724993423,9cyclictest9-21ksoftirqd/009:32:560
25724993423,3cyclictest9-21ksoftirqd/008:47:320
25724993420,11cyclictest9-21ksoftirqd/012:53:070
25724993419,7cyclictest9-21ksoftirqd/010:13:030
25724993419,7cyclictest9-21ksoftirqd/010:13:030
2572499341,6cyclictest121rcu_preempt10:17:520
25724993416,3cyclictest9-21ksoftirqd/012:04:560
2572499341,3cyclictest121rcu_preempt11:15:370
25724993410,7cyclictest9-21ksoftirqd/009:23:000
2572499340,3cyclictest121rcu_preempt13:27:380
25748993327,3cyclictest41-21ksoftirqd/309:37:463
2573199339,6cyclictest25-21ksoftirqd/113:39:091
2573199330,7cyclictest25-21ksoftirqd/108:22:521
2572499338,4cyclictest9-21ksoftirqd/013:42:560
2572499338,4cyclictest9-21ksoftirqd/013:42:560
2572499335,4cyclictest9-21ksoftirqd/010:28:040
2572499333,3cyclictest121rcu_preempt09:02:560
2572499333,3cyclictest121rcu_preempt08:22:460
25724993327,3cyclictest9-21ksoftirqd/012:32:370
2573199323,3cyclictest25-21ksoftirqd/109:27:551
25724993227,3cyclictest9-21ksoftirqd/011:07:350
2572499321,5cyclictest121rcu_preempt10:32:550
2572499320,3cyclictest121rcu_preempt08:27:480
240862320,2sleep20-21swapper/212:05:232
2574099314,16cyclictest16000-21sh11:57:482
2574099314,16cyclictest16000-21sh11:57:482
25724993126,3cyclictest9-21ksoftirqd/013:02:500
25724993125,3cyclictest9-21ksoftirqd/008:52:320
2572499311,3cyclictest121rcu_preempt11:22:520
106891310,1ptp4l401ktimersoftd/309:24:073
25731993012,6cyclictest25-21ksoftirqd/110:19:501
2572499304,2cyclictest121rcu_preempt09:17:430
2572499300,3cyclictest121rcu_preempt09:57:490
248012306,10sleep20-21swapper/208:17:542
2574099292,16cyclictest18203-21ssh12:32:492
25740992918,5cyclictest0-21swapper/211:42:482
25724992923,3cyclictest9-21ksoftirqd/009:52:470
25740992822,3cyclictest33-21ksoftirqd/210:13:252
25740992822,3cyclictest33-21ksoftirqd/210:13:252
2573199271,7cyclictest0-21swapper/108:42:321
25740992621,3cyclictest33-21ksoftirqd/213:48:412
25740992619,4cyclictest33-21ksoftirqd/212:17:282
25740992619,4cyclictest33-21ksoftirqd/209:05:452
25740992619,4cyclictest33-21ksoftirqd/209:01:522
25740992619,4cyclictest33-21ksoftirqd/208:56:262
2574099252,17cyclictest28025-21apt-get12:42:502
25740992519,4cyclictest12957-21ssh10:48:002
25740992519,3cyclictest33-21ksoftirqd/213:32:062
25740992519,3cyclictest33-21ksoftirqd/210:19:222
25740992519,3cyclictest33-21ksoftirqd/209:24:302
25740992518,4cyclictest33-21ksoftirqd/209:31:222
2574099245,11cyclictest10757-21ssh12:57:482
25740992419,3cyclictest33-21ksoftirqd/213:23:062
25740992419,3cyclictest33-21ksoftirqd/209:17:572
25740992418,3cyclictest33-21ksoftirqd/211:21:472
25740992418,3cyclictest33-21ksoftirqd/211:07:352
25740992418,3cyclictest33-21ksoftirqd/208:50:542
25740992418,3cyclictest33-21ksoftirqd/208:43:112
25740992418,3cyclictest33-21ksoftirqd/208:37:412
25740992417,4cyclictest33-21ksoftirqd/213:34:002
25740992417,4cyclictest33-21ksoftirqd/212:50:162
25740992417,4cyclictest33-21ksoftirqd/212:23:142
25740992417,4cyclictest33-21ksoftirqd/210:39:392
25740992417,4cyclictest33-21ksoftirqd/209:33:312
25740992417,4cyclictest33-21ksoftirqd/209:14:322
25740992411,10cyclictest24298-21cat11:32:532
2574099240,2cyclictest121rcu_preempt13:05:102
2573199244,7cyclictest25-21ksoftirqd/109:22:491
25740992318,3cyclictest9373-21awk10:02:332
25740992317,3cyclictest33-21ksoftirqd/209:40:302
25740992316,4cyclictest33-21ksoftirqd/209:43:432
25740992217,3cyclictest33-21ksoftirqd/213:08:082
25740992216,3cyclictest33-21ksoftirqd/209:10:312
2574099221,3cyclictest121rcu_preempt11:10:022
2574099217,11cyclictest3250-21wc12:17:482
25740992115,3cyclictest33-21ksoftirqd/213:21:312
25740992115,3cyclictest33-21ksoftirqd/211:23:282
25740992115,3cyclictest33-21ksoftirqd/208:22:312
25740992114,4cyclictest8185-21sh11:48:242
25740992114,4cyclictest27769-21sh13:13:292
25740992014,4cyclictest21211-21sh13:40:192
25740992014,3cyclictest7650-21sed10:42:552
25740992014,3cyclictest33-21ksoftirqd/211:14:122
25740992014,3cyclictest33-21ksoftirqd/210:10:172
25740992014,3cyclictest28599-21sh10:32:222
25740992014,3cyclictest17614-21sh10:52:552
25740992013,4cyclictest8186-21sh12:53:562
25740992013,4cyclictest29009-21gltestperf11:37:522
25740992013,4cyclictest28960-21basename08:27:352
25740992013,4cyclictest25755-21sh11:02:232
25740992013,4cyclictest25556-21sh13:44:202
25740992013,4cyclictest25556-21sh13:44:202
25740992013,4cyclictest21594-21sh10:23:532
25740991913,3cyclictest23462-21fschecks_time12:37:522
25740991913,3cyclictest11843-21date10:07:342
25740991912,4cyclictest4853-21seq09:52:362
25740991912,4cyclictest3294-21sed09:47:512
25740991912,4cyclictest30315-21awk10:32:542
25740991912,4cyclictest16558-21sh12:30:342
25740991912,4cyclictest11740-21sh11:52:542
2574099191,16cyclictest21471-21kworker/2:212:07:552
25740991813,3cyclictest33-21ksoftirqd/208:32:432
25740991813,3cyclictest33-21ksoftirqd/208:32:432
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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