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2026-04-17 - 14:03
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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 Fri Apr 17, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24208332324282,28sleep10-21swapper/119:06:441
24208782286252,20sleep00-21swapper/019:07:140
179699810,4rtkit-daemon1795-21rtkit-daemon23:12:161
179699570,4rtkit-daemon1795-21rtkit-daemon23:24:460
179699520,4rtkit-daemon1795-21rtkit-daemon22:43:421
179699520,4rtkit-daemon1795-21rtkit-daemon20:47:540
25133142500,3sleep02513317-21idleruntime22:10:180
179699500,4rtkit-daemon1795-21rtkit-daemon23:40:200
179699500,4rtkit-daemon1795-21rtkit-daemon19:30:511
25986472480,1chrt2598645-21ssh00:13:090
179699480,4rtkit-daemon1795-21rtkit-daemon19:53:211
24698912470,6sleep12469887-21grep21:10:171
179699470,3rtkit-daemon1795-21rtkit-daemon23:56:160
179699410,6rtkit-daemon2523202-21python322:25:010
179699400,6rtkit-daemon2478220-21ntpq21:20:340
179699380,3rtkit-daemon1795-21rtkit-daemon20:55:370
179699380,3rtkit-daemon0-21swapper/122:21:301
179699370,3rtkit-daemon0-21swapper/119:10:461
179699370,3rtkit-daemon0-21swapper/023:01:570
2421276993610,5cyclictest13-21ksoftirqd/021:05:010
179699360,7rtkit-daemon348-21systemd-udevd19:17:180
179699360,4rtkit-daemon1795-21rtkit-daemon21:35:330
179699360,3rtkit-daemon0-21swapper/021:15:260
179699360,3rtkit-daemon0-21swapper/021:14:290
179699360,3rtkit-daemon0-21swapper/020:37:340
179699350,4rtkit-daemon1795-21rtkit-daemon22:39:331
179699350,4rtkit-daemon0-21swapper/023:55:551
179699350,4rtkit-daemon0-21swapper/022:57:371
179699350,3rtkit-daemon0-21swapper/121:04:361
179699350,3rtkit-daemon0-21swapper/120:09:400
179699350,3rtkit-daemon0-21swapper/119:49:021
179699350,3rtkit-daemon0-21swapper/119:30:160
179699350,3rtkit-daemon0-21swapper/119:21:431
179699350,3rtkit-daemon0-21swapper/119:13:580
179699350,3rtkit-daemon0-21swapper/022:10:381
179699350,3rtkit-daemon0-21swapper/000:38:370
2421276993411,4cyclictest13-21ksoftirqd/000:05:000
179699340,4rtkit-daemon1795-21rtkit-daemon22:09:150
179699340,3rtkit-daemon1795-21rtkit-daemon22:17:080
179699340,3rtkit-daemon1795-21rtkit-daemon21:07:411
179699340,3rtkit-daemon0-21swapper/119:18:191
179699340,3rtkit-daemon0-21swapper/020:23:581
179699340,3rtkit-daemon0-21swapper/020:22:490
179699330,4rtkit-daemon1795-21rtkit-daemon23:18:291
179699330,4rtkit-daemon1795-21rtkit-daemon22:33:091
179699330,4rtkit-daemon1795-21rtkit-daemon19:29:341
179699330,3rtkit-daemon1795-21rtkit-daemon22:49:320
179699330,3rtkit-daemon1795-21rtkit-daemon21:54:511
179699330,3rtkit-daemon1795-21rtkit-daemon20:05:171
179699330,3rtkit-daemon0-21swapper/119:50:540
179699330,3rtkit-daemon0-21swapper/119:28:590
179699330,3rtkit-daemon0-21swapper/119:23:500
2421280993229,2cyclictest66950irq/132-enp2s023:55:001
179699320,3rtkit-daemon1795-21rtkit-daemon20:00:221
179699320,3rtkit-daemon1795-21rtkit-daemon19:42:511
179699320,3rtkit-daemon0-21swapper/122:41:320
179699320,3rtkit-daemon0-21swapper/120:14:010
179699320,3rtkit-daemon0-21swapper/120:01:050
179699320,3rtkit-daemon0-21swapper/119:38:160
179699320,3rtkit-daemon0-21swapper/100:19:380
179699320,3rtkit-daemon0-21swapper/023:33:381
179699320,3rtkit-daemon0-21swapper/021:33:471
179699320,3rtkit-daemon0-21swapper/020:59:591
179699320,3rtkit-daemon0-21swapper/000:15:431
2421276993117,2cyclictest2546084-21ssh22:55:420
179699310,4rtkit-daemon1795-21rtkit-daemon23:53:360
179699310,4rtkit-daemon1795-21rtkit-daemon23:46:521
179699310,4rtkit-daemon1795-21rtkit-daemon21:40:001
179699310,3rtkit-daemon1795-21rtkit-daemon21:44:471
179699310,3rtkit-daemon0-21swapper/122:28:250
179699310,3rtkit-daemon0-21swapper/023:40:131
179699310,3rtkit-daemon0-21swapper/022:16:431
179699310,3rtkit-daemon0-21swapper/021:20:471
179699310,3rtkit-daemon0-21swapper/020:46:001
2421276993010,5cyclictest13-21ksoftirqd/023:07:430
179699300,3rtkit-daemon1795-21rtkit-daemon22:28:391
179699300,3rtkit-daemon1795-21rtkit-daemon19:57:091
179699300,3rtkit-daemon1795-21rtkit-daemon00:25:371
179699300,3rtkit-daemon0-21swapper/021:16:251
179699290,4rtkit-daemon1795-21rtkit-daemon21:55:050
179699290,3rtkit-daemon0-21swapper/122:38:210
179699290,3rtkit-daemon0-21swapper/119:49:220
179699290,3rtkit-daemon0-21swapper/022:51:231
179699290,3rtkit-daemon0-21swapper/000:08:291
242128099282,6cyclictest2613294-21diskstats00:35:161
179699280,3rtkit-daemon0-21swapper/119:43:550
179699280,3rtkit-daemon0-21swapper/100:25:450
179699280,3rtkit-daemon0-21swapper/021:47:541
179699280,3rtkit-daemon0-21swapper/000:33:461
179699280,2rtkit-daemon0-21swapper/020:27:571
242127699272,18cyclictest2480714-21apt-get21:25:110
2421276992715,2cyclictest2505235-1kworker/u9:022:00:210
179699270,3rtkit-daemon0-21swapper/023:08:491
179699270,3rtkit-daemon0-21swapper/022:49:251
179699270,3rtkit-daemon0-21swapper/020:36:531
179699270,22rtkit-daemon2421270-21cyclictest23:24:331
242128099260,6cyclictest0-21swapper/100:11:121
2421276992611,2cyclictest141rcu_preempt23:30:200
2421276992610,2cyclictest141rcu_preempt21:31:330
179699260,1rtkit-daemon1795-21rtkit-daemon21:48:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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