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2026-04-14 - 18:14
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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
Characteristics of the 100 highest latencies:
System rackcslot4.osadl.org (updated Tue Apr 14, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26120552270194,61sleep00-21swapper/007:05:500
26122882254212,28sleep10-21swapper/107:08:201
27169972640,1sleep00-21swapper/010:25:240
27454042610,4sleep10-21swapper/111:06:051
179699540,4rtkit-daemon1795-21rtkit-daemon09:46:331
179699490,4rtkit-daemon1795-21rtkit-daemon11:16:540
179699490,4rtkit-daemon1795-21rtkit-daemon09:42:341
179699490,4rtkit-daemon1795-21rtkit-daemon08:58:140
179699490,4rtkit-daemon1795-21rtkit-daemon07:56:311
179699490,3rtkit-daemon1795-21rtkit-daemon11:03:510
27679752470,3sleep10-21swapper/111:38:511
179699460,3rtkit-daemon1795-21rtkit-daemon07:17:470
179699440,3rtkit-daemon1795-21rtkit-daemon09:21:190
179699440,3rtkit-daemon1795-21rtkit-daemon09:21:190
179699420,3rtkit-daemon0-21swapper/012:09:560
179699380,4rtkit-daemon2689191-21runrttasks09:46:000
179699370,3rtkit-daemon0-21swapper/007:38:370
179699360,4rtkit-daemon1795-21rtkit-daemon11:30:341
179699360,4rtkit-daemon1795-21rtkit-daemon10:07:441
179699360,3rtkit-daemon0-21swapper/111:22:141
179699360,3rtkit-daemon0-21swapper/011:53:580
179699360,3rtkit-daemon0-21swapper/011:45:531
179699350,4rtkit-daemon1795-21rtkit-daemon10:43:441
179699350,4rtkit-daemon1795-21rtkit-daemon08:54:061
179699350,3rtkit-daemon0-21swapper/108:26:001
179699340,4rtkit-daemon1795-21rtkit-daemon10:55:001
179699340,4rtkit-daemon1795-21rtkit-daemon10:25:221
179699340,4rtkit-daemon1795-21rtkit-daemon09:31:331
179699340,4rtkit-daemon1795-21rtkit-daemon07:51:361
179699340,3rtkit-daemon0-21swapper/112:15:521
179699340,3rtkit-daemon0-21swapper/109:00:261
2612669993329,2cyclictest2758668-21tr11:25:280
179699330,4rtkit-daemon1795-21rtkit-daemon11:55:080
179699330,3rtkit-daemon0-21swapper/108:07:520
179699330,3rtkit-daemon0-21swapper/008:59:321
179699320,3rtkit-daemon1795-21rtkit-daemon09:28:081
179699320,3rtkit-daemon0-21swapper/112:32:300
179699320,3rtkit-daemon0-21swapper/012:07:471
179699320,3rtkit-daemon0-21swapper/009:24:561
179699320,3rtkit-daemon0-21swapper/009:24:561
179699320,2rtkit-daemon1795-21rtkit-daemon11:44:560
179699310,4rtkit-daemon1795-21rtkit-daemon09:15:351
179699310,4rtkit-daemon1795-21rtkit-daemon08:32:411
179699310,4rtkit-daemon1795-21rtkit-daemon07:42:280
179699310,3rtkit-daemon1795-21rtkit-daemon10:20:521
179699310,3rtkit-daemon0-21swapper/110:21:050
179699310,3rtkit-daemon0-21swapper/107:47:220
179699310,3rtkit-daemon0-21swapper/012:11:421
179699310,3rtkit-daemon0-21swapper/011:54:261
179699310,3rtkit-daemon0-21swapper/011:15:281
179699310,3rtkit-daemon0-21swapper/011:14:531
179699310,3rtkit-daemon0-21swapper/011:02:031
179699310,3rtkit-daemon0-21swapper/007:25:501
179699310,3rtkit-daemon0-21swapper/007:16:291
179699310,1rtkit-daemon1795-21rtkit-daemon10:58:461
27120242300,5chrt2711833-21python310:20:020
179699300,3rtkit-daemon0-21swapper/109:26:140
179699300,3rtkit-daemon0-21swapper/108:00:060
179699300,3rtkit-daemon0-21swapper/007:40:281
2612672992922,5cyclictest2694569-21cat09:55:001
261267299291,6cyclictest2758217-21apt-get11:25:221
2612672992914,10cyclictest2779568-21apt-get11:55:111
2612669992913,10cyclictest2697967-1kworker/u9:110:35:140
2612669992913,10cyclictest2694717-21apt-get09:55:140
2612669992911,12cyclictest2658407-21apt-get09:00:130
179699290,4rtkit-daemon1795-21rtkit-daemon12:22:570
179699290,4rtkit-daemon1795-21rtkit-daemon08:24:160
179699290,3rtkit-daemon0-21swapper/111:47:260
179699290,3rtkit-daemon0-21swapper/107:55:570
2612669992821,5cyclictest13-21ksoftirqd/008:20:010
179699280,4rtkit-daemon1795-21rtkit-daemon08:42:550
2612669992712,9cyclictest2753696-21kworker/u8:111:30:130
179699270,3rtkit-daemon0-21swapper/109:14:270
179699270,3rtkit-daemon0-21swapper/107:54:300
179699270,3rtkit-daemon0-21swapper/010:12:181
179699270,1rtkit-daemon1795-21rtkit-daemon10:34:171
2612672992623,2cyclictest66950irq/132-enp2s010:16:551
261267299260,7cyclictest0-21swapper/112:04:151
261267299260,6cyclictest0-21swapper/108:45:541
261267299257,14cyclictest26-21ksoftirqd/110:45:141
261267299257,13cyclictest26-21ksoftirqd/112:20:141
261267299253,15cyclictest2800528-21apt-get12:25:141
261267299252,15cyclictest2642770-21apt-get08:20:131
2612672992513,7cyclictest66950irq/132-enp2s009:35:151
2612672992512,3cyclictest26285402fschecks_time07:45:161
261266999252,16cyclictest2660764-21apt-get09:05:140
2612669992516,5cyclictest2662523-21diskmemload10:40:140
179699250,1rtkit-daemon1795-21rtkit-daemon10:37:551
179699250,1rtkit-daemon1795-21rtkit-daemon07:21:140
261267299249,5cyclictest0-21swapper/109:11:571
261267299242,15cyclictest2634538-21apt-get08:00:141
261267299241,7cyclictest2808223-21ntp_states12:35:231
2612672992410,4cyclictest26-21ksoftirqd/110:00:301
261267299240,6cyclictest2804294-21fschecks_time12:30:181
261267299240,6cyclictest0-21swapper/109:59:531
261267299240,22cyclictest2613363-21fschecks_count07:10:151
261266999247,8cyclictest2687349-21ls09:45:000
261267299238,9cyclictest26-21ksoftirqd/108:15:141
261267299235,5cyclictest284-20systemd-journal09:10:001
261267299235,12cyclictest2650590-21apt-get08:40:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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