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2026-09-03 - 21:13
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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 Thu Sep 03, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2644821820,5sleep026454-21gltestperf09:31:490
1068911080,3ptp4l401ktimersoftd/309:31:583
106891980,1ptp4l401ktimersoftd/313:33:013
106891980,1ptp4l401ktimersoftd/313:33:013
243232850,4sleep22818199cyclictest14:23:132
106891730,1ptp4l401ktimersoftd/314:59:293
106891730,1ptp4l401ktimersoftd/313:56:443
106891730,1ptp4l401ktimersoftd/312:31:063
106891710,1ptp4l401ktimersoftd/312:52:583
106891690,10ptp4l401ktimersoftd/314:23:023
150892660,5sleep02816699cyclictest12:34:510
142792660,2sleep00-21swapper/010:11:500
274462580,5sleep327448-21fschecks_time11:41:503
274462580,5sleep327448-21fschecks_time11:41:503
106891580,1ptp4l401ktimersoftd/313:39:353
27452570,2sleep10-21swapper/111:49:191
27452570,2sleep10-21swapper/111:49:191
106891570,1ptp4l401ktimersoftd/312:00:473
186412540,2sleep20-21swapper/213:11:552
106891540,1ptp4l401ktimersoftd/312:15:013
28172994820,9cyclictest25-21ksoftirqd/113:02:491
28172994820,6cyclictest25-21ksoftirqd/114:33:591
28172994820,10cyclictest25-21ksoftirqd/113:39:251
28172994817,9cyclictest25-21ksoftirqd/114:39:261
106891480,1ptp4l401ktimersoftd/310:15:403
28172994719,10cyclictest25-21ksoftirqd/111:59:281
28172994718,9cyclictest25-21ksoftirqd/114:09:401
28172994718,9cyclictest25-21ksoftirqd/112:22:521
28172994619,8cyclictest25-21ksoftirqd/112:43:151
28172994520,9cyclictest25-21ksoftirqd/115:06:211
28172994520,9cyclictest25-21ksoftirqd/112:53:151
28172994518,8cyclictest25-21ksoftirqd/113:57:401
28172994518,6cyclictest25-21ksoftirqd/113:18:351
2817299450,10cyclictest25-21ksoftirqd/113:41:591
28172994419,7cyclictest25-21ksoftirqd/113:24:451
28181994337,3cyclictest33-21ksoftirqd/213:31:422
28181994337,3cyclictest33-21ksoftirqd/213:31:422
28172994318,9cyclictest25-21ksoftirqd/114:50:401
2817299424,6cyclictest25-21ksoftirqd/112:08:131
28172994221,9cyclictest25-21ksoftirqd/112:04:041
28172994219,7cyclictest25-21ksoftirqd/111:55:391
28172994219,4cyclictest25-21ksoftirqd/112:14:461
28172994219,10cyclictest25-21ksoftirqd/113:53:391
28172994217,9cyclictest25-21ksoftirqd/113:10:581
28172994217,9cyclictest25-21ksoftirqd/112:59:081
28172994217,9cyclictest25-21ksoftirqd/111:39:251
28172994217,10cyclictest25-21ksoftirqd/111:45:431
28172994217,10cyclictest25-21ksoftirqd/111:45:431
28172994216,10cyclictest25-21ksoftirqd/113:11:411
28172994216,10cyclictest25-21ksoftirqd/112:32:521
28172994215,6cyclictest25-21ksoftirqd/110:41:481
106891420,1ptp4l401ktimersoftd/315:03:223
28172994117,9cyclictest25-21ksoftirqd/112:38:451
28172994115,9cyclictest25-21ksoftirqd/112:26:401
2817299403,5cyclictest25-21ksoftirqd/114:24:101
2817299402,6cyclictest25-21ksoftirqd/113:35:421
2817299402,6cyclictest25-21ksoftirqd/113:35:421
28172994020,8cyclictest25-21ksoftirqd/114:04:101
28172994019,9cyclictest25-21ksoftirqd/114:43:301
28172994016,9cyclictest25-21ksoftirqd/112:20:341
106891400,1ptp4l401ktimersoftd/313:54:383
106891400,1ptp4l401ktimersoftd/312:02:503
106891400,1ptp4l401ktimersoftd/311:50:213
106891400,1ptp4l401ktimersoftd/311:50:213
106891400,0ptp4l401ktimersoftd/310:36:563
2817299392,5cyclictest25-21ksoftirqd/113:27:081
2817299392,5cyclictest25-21ksoftirqd/113:27:081
28172993915,6cyclictest25-21ksoftirqd/114:58:151
106891390,1ptp4l401ktimersoftd/314:44:163
106891390,1ptp4l401ktimersoftd/313:11:073
106891390,1ptp4l401ktimersoftd/312:51:173
2817299384,7cyclictest25-21ksoftirqd/114:52:071
28172993819,9cyclictest25-21ksoftirqd/114:17:061
2817299381,6cyclictest25-21ksoftirqd/110:21:581
28172993816,9cyclictest25-21ksoftirqd/114:30:371
28172993810,6cyclictest25-21ksoftirqd/113:49:041
106891380,1ptp4l401ktimersoftd/314:32:353
106891380,1ptp4l401ktimersoftd/313:23:053
106891380,1ptp4l401ktimersoftd/312:33:413
106891380,1ptp4l401ktimersoftd/312:22:373
106891380,1ptp4l401ktimersoftd/311:52:273
28189993727,5cyclictest41-21ksoftirqd/313:16:483
28172993733,2cyclictest231rcuc/110:46:581
2817299372,5cyclictest25-21ksoftirqd/111:02:021
2817299372,5cyclictest25-21ksoftirqd/110:31:561
28172993721,7cyclictest25-21ksoftirqd/114:12:281
2817299371,6cyclictest25-21ksoftirqd/110:06:511
2817299370,5cyclictest25-21ksoftirqd/112:47:001
276902370,5sleep233-21ksoftirqd/214:26:592
106891370,1ptp4l401ktimersoftd/314:53:053
106891370,1ptp4l401ktimersoftd/314:48:383
106891370,1ptp4l401ktimersoftd/314:40:083
106891370,1ptp4l401ktimersoftd/314:17:213
106891370,1ptp4l401ktimersoftd/314:15:323
106891370,1ptp4l401ktimersoftd/314:09:433
106891370,1ptp4l401ktimersoftd/314:02:343
106891370,1ptp4l401ktimersoftd/313:49:023
106891370,1ptp4l401ktimersoftd/313:26:533
106891370,1ptp4l401ktimersoftd/313:26:533
106891370,1ptp4l401ktimersoftd/313:02:513
106891370,1ptp4l401ktimersoftd/312:58:133
106891370,1ptp4l401ktimersoftd/312:43:233
106891370,1ptp4l401ktimersoftd/312:40:453
106891370,1ptp4l401ktimersoftd/311:37:073
106891370,1ptp4l401ktimersoftd/310:58:353
106891370,0ptp4l401ktimersoftd/312:21:013
2817299362,6cyclictest25-21ksoftirqd/109:51:471
2817299362,6cyclictest25-21ksoftirqd/109:51:471
28172993618,7cyclictest25-21ksoftirqd/111:21:511
28172993618,10cyclictest25-21ksoftirqd/110:40:091
2773823615,11sleep125-21ksoftirqd/109:32:201
106891360,1ptp4l401ktimersoftd/312:11:163
106891360,1ptp4l401ktimersoftd/311:26:563
2818999351,3cyclictest131rcu_sched09:41:323
2817299352,7cyclictest25-21ksoftirqd/110:16:551
2817299351,6cyclictest25-21ksoftirqd/110:56:441
2817299351,5cyclictest25-21ksoftirqd/109:56:331
2817299351,5cyclictest25-21ksoftirqd/109:56:331
106891350,1ptp4l401ktimersoftd/313:42:213
2817299341,5cyclictest25-21ksoftirqd/111:26:541
28172993414,9cyclictest25-21ksoftirqd/111:14:171
28172993411,6cyclictest25-21ksoftirqd/110:56:231
2817299340,5cyclictest25-21ksoftirqd/111:17:471
2817299334,6cyclictest25-21ksoftirqd/110:02:591
2817299334,6cyclictest25-21ksoftirqd/110:02:591
28172993316,8cyclictest25-21ksoftirqd/109:46:451
28172993316,8cyclictest25-21ksoftirqd/109:41:511
28172993315,8cyclictest25-21ksoftirqd/110:30:401
2817299330,5cyclictest25-21ksoftirqd/111:09:281
106891330,2ptp4l14112-21kworker/3:109:51:143
106891330,1ptp4l401ktimersoftd/309:57:353
106891330,1ptp4l401ktimersoftd/309:57:353
106891330,12ptp4l401ktimersoftd/310:22:243
106891330,0ptp4l401ktimersoftd/310:55:183
2817299320,5cyclictest25-21ksoftirqd/110:11:521
106891320,1ptp4l401ktimersoftd/314:29:193
28181993114,14cyclictest11550-21sh13:37:002
28172993115,8cyclictest25-21ksoftirqd/109:36:591
28166993125,3cyclictest9-21ksoftirqd/014:51:570
175272310,5sleep22818199cyclictest13:43:102
106891310,1ptp4l401ktimersoftd/311:22:073
106891310,1ptp4l401ktimersoftd/311:10:283
106891300,0ptp4l401ktimersoftd/311:17:303
106891300,0ptp4l401ktimersoftd/310:34:233
28181992918,8cyclictest33-21ksoftirqd/213:58:402
28172992918,4cyclictest25-21ksoftirqd/111:33:151
2816699295,13cyclictest27046-21ssh11:41:460
2816699295,13cyclictest27046-21ssh11:41:460
106891290,1ptp4l401ktimersoftd/313:12:013
106891290,1ptp4l401ktimersoftd/311:05:403
276512286,10sleep20-21swapper/209:32:042
234482280,4sleep22818199cyclictest13:16:532
106891280,0ptp4l401ktimersoftd/310:04:143
106891280,0ptp4l401ktimersoftd/310:04:143
28189992721,3cyclictest41-21ksoftirqd/309:41:333
28181992721,3cyclictest33-21ksoftirqd/212:45:052
28181992720,4cyclictest33-21ksoftirqd/211:04:152
28166992720,4cyclictest9-21ksoftirqd/010:39:320
106891270,1ptp4l401ktimersoftd/310:48:003
28189992620,3cyclictest14112-21kworker/3:111:11:493
28181992620,4cyclictest33-21ksoftirqd/211:26:342
28181992620,3cyclictest33-21ksoftirqd/213:03:362
28181992620,3cyclictest33-21ksoftirqd/211:21:342
28181992619,4cyclictest33-21ksoftirqd/210:43:202
28166992621,3cyclictest9-21ksoftirqd/010:33:000
28166992620,4cyclictest9-21ksoftirqd/014:11:500
28166992619,4cyclictest8995-21turbostat.cron11:56:350
1644122619,3sleep09-21ksoftirqd/013:09:290
106891260,0ptp4l401ktimersoftd/311:36:303
28189992519,3cyclictest41-21ksoftirqd/310:26:473
28181992520,3cyclictest33-21ksoftirqd/214:31:562
28181992519,3cyclictest33-21ksoftirqd/210:28:002
28181992519,3cyclictest33-21ksoftirqd/209:58:012
28181992519,3cyclictest33-21ksoftirqd/209:58:012
28181992518,4cyclictest25969-21tail13:51:582
28181992511,4cyclictest7650-21sh11:54:182
2816699252,13cyclictest27811-21ssh13:21:480
28166992520,3cyclictest9-21ksoftirqd/011:46:480
28166992520,3cyclictest9-21ksoftirqd/011:46:480
28166992520,3cyclictest9-21ksoftirqd/009:41:340
28166992520,3cyclictest233-21systemd-journal10:56:290
28166992519,3cyclictest9-21ksoftirqd/014:16:580
28166992519,3cyclictest9-21ksoftirqd/012:11:500
28166992519,3cyclictest9-21ksoftirqd/011:00:160
28166992518,4cyclictest9-21ksoftirqd/010:17:280
28166992518,4cyclictest9-21ksoftirqd/009:54:120
28166992518,4cyclictest9-21ksoftirqd/009:54:120
98062240,2sleep20-21swapper/211:56:552
28189992418,3cyclictest41-21ksoftirqd/310:41:403
28189992418,3cyclictest41-21ksoftirqd/310:06:523
28181992418,3cyclictest33-21ksoftirqd/211:09:062
28181992418,3cyclictest33-21ksoftirqd/210:58:512
28181992418,3cyclictest33-21ksoftirqd/210:11:282
28181992417,4cyclictest33-21ksoftirqd/210:40:152
28181992417,4cyclictest33-21ksoftirqd/210:04:422
28181992417,4cyclictest33-21ksoftirqd/210:04:422
2816699242,13cyclictest46950irq/100-ens3-Tx13:41:480
28166992419,3cyclictest9-21ksoftirqd/014:36:590
28166992419,3cyclictest9-21ksoftirqd/009:37:020
28166992418,3cyclictest9-21ksoftirqd/012:51:470
28166992418,3cyclictest9-21ksoftirqd/011:03:280
28166992418,3cyclictest9-21ksoftirqd/010:47:390
28166992418,3cyclictest16571-21grep11:22:030
28166992417,4cyclictest9-21ksoftirqd/012:58:240
28166992417,4cyclictest9-21ksoftirqd/010:43:140
28166992417,4cyclictest9-21ksoftirqd/010:03:070
28166992417,4cyclictest9-21ksoftirqd/010:03:070
28166992416,6cyclictest9-21ksoftirqd/012:26:490
28166992416,5cyclictest11991-21grep10:06:510
28166992412,9cyclictest13043-21ssh13:38:500
126722240,19sleep00-21swapper/013:06:200
106891240,1ptp4l401ktimersoftd/309:51:503
106891240,1ptp4l401ktimersoftd/309:51:503
106891240,0ptp4l401ktimersoftd/310:21:173
28181992317,3cyclictest33-21ksoftirqd/212:19:112
28181992317,3cyclictest33-21ksoftirqd/211:49:092
28181992317,3cyclictest33-21ksoftirqd/211:49:092
28181992317,3cyclictest33-21ksoftirqd/210:54:512
28181992317,3cyclictest33-21ksoftirqd/210:32:392
28181992316,4cyclictest33-21ksoftirqd/212:59:582
28181992316,4cyclictest33-21ksoftirqd/212:10:322
28181992316,4cyclictest33-21ksoftirqd/211:28:002
28181992316,4cyclictest33-21ksoftirqd/210:49:342
28181992316,4cyclictest33-21ksoftirqd/209:55:302
28181992316,4cyclictest33-21ksoftirqd/209:55:302
28181992316,4cyclictest33-21ksoftirqd/209:38:002
28166992318,3cyclictest9-21ksoftirqd/012:02:040
28166992316,4cyclictest9-21ksoftirqd/011:07:060
28166992316,4cyclictest17905-21mailstats12:37:040
28181992216,3cyclictest33-21ksoftirqd/211:33:482
28181992215,4cyclictest33-21ksoftirqd/214:04:462
28181992215,4cyclictest16517-21cut10:16:502
28181992215,4cyclictest11862-21bc14:11:482
2818199220,6cyclictest32503-21python12:51:592
28166992216,4cyclictest9-21ksoftirqd/011:27:260
28166992216,3cyclictest9-21ksoftirqd/013:46:410
28166992215,4cyclictest9-21ksoftirqd/011:13:490
28166992215,4cyclictest21722-21diskmemload14:07:000
28166992214,5cyclictest2002-21expr12:21:500
2816699220,8cyclictest22090-21sed10:26:550
2818199218,11cyclictest47150irq/102-ens3-Tx12:14:032
2818199213,3cyclictest121rcu_preempt12:39:042
2818199213,10cyclictest22148-21ssh11:36:472
28181992116,3cyclictest33-21ksoftirqd/212:02:042
28181992116,3cyclictest33-21ksoftirqd/211:41:512
28181992116,3cyclictest33-21ksoftirqd/211:41:512
28181992115,3cyclictest33-21ksoftirqd/212:31:242
28181992115,3cyclictest31969-21grep09:41:472
28181992114,4cyclictest3625-21vmstat12:22:062
28181992114,4cyclictest31514-21sh15:03:492
28181992114,4cyclictest29450-21timerwakeupswit13:22:052
28181992114,4cyclictest26481-21sh14:58:342
28181992114,4cyclictest19859-21kernelversion14:51:582
28181992114,4cyclictest14717-21missed_timers10:11:532
28181992114,4cyclictest14264-21latency13:06:562
28181992114,4cyclictest11455-21sh14:42:552
28166992115,4cyclictest9-21ksoftirqd/009:56:410
28166992115,4cyclictest9-21ksoftirqd/009:56:410
28166992115,3cyclictest9-21ksoftirqd/014:36:080
28166992115,3cyclictest9-21ksoftirqd/009:49:210
28166992114,4cyclictest25409-21sh14:25:060
2816699211,16cyclictest22459-21grep12:41:570
28166992110,8cyclictest6619-21cron14:06:380
2818199202,11cyclictest14053-21ssh14:46:502
28181992014,3cyclictest33-21ksoftirqd/214:37:142
28181992014,3cyclictest17310-21sh14:16:572
28181992014,3cyclictest1555-21/usr/sbin/munin09:46:472
28181992014,3cyclictest14261-21sh12:33:272
28181992014,3cyclictest10441-21sh14:09:502
28181992014,3cyclictest10101-21/usr/sbin/munin11:11:482
28181992013,4cyclictest662-21cut13:26:552
28181992013,4cyclictest662-21cut13:26:552
28181992013,4cyclictest27643-21sh12:47:002
28181992013,4cyclictest20246-21df_inode13:46:512
28181992013,4cyclictest18739-21cpuspeed_turbos10:21:442
28166992014,3cyclictest9-21ksoftirqd/012:00:380
28166992014,3cyclictest9-21ksoftirqd/011:38:380
28166992014,3cyclictest21722-21diskmemload13:51:520
28166992014,3cyclictest18396-21sh14:51:270
28166992014,3cyclictest18296-21sh13:11:510
28166992013,4cyclictest26988-21expr14:26:520
28166992013,4cyclictest21722-21diskmemload12:47:440
28166992013,4cyclictest19036-21grep10:21:470
28166992013,4cyclictest12578-21sh14:44:510
2816699201,16cyclictest7835-21ssh13:33:130
2816699201,16cyclictest7835-21ssh13:33:130
28166991913,3cyclictest9-21ksoftirqd/011:19:310
28166991913,3cyclictest32056-21sh12:18:400
28166991913,3cyclictest29564-21sh13:56:440
28166991913,3cyclictest28901-21cat15:01:550
28166991913,3cyclictest23817-21cut13:16:550
28166991912,4cyclictest25334-21swap14:57:110
28166991911,5cyclictest1464-21awk13:27:000
28166991911,5cyclictest1464-21awk13:27:000
28166991911,4cyclictest9-21ksoftirqd/012:06:360
28166991811,4cyclictest19764-21tr11:31:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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