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2026-06-19 - 09:18
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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 Jun 19, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40557502260183,60sleep00-21swapper/019:05:590
40557382260188,27sleep10-21swapper/119:05:521
179699810,4rtkit-daemon1795-21rtkit-daemon22:30:570
179699510,4rtkit-daemon1795-21rtkit-daemon20:54:450
179699500,4rtkit-daemon1795-21rtkit-daemon00:21:051
179699490,3rtkit-daemon1795-21rtkit-daemon20:39:100
179699490,3rtkit-daemon1795-21rtkit-daemon19:42:480
41338072480,4sleep00-21swapper/021:47:270
179699480,4rtkit-daemon1795-21rtkit-daemon22:47:320
179699480,4rtkit-daemon1795-21rtkit-daemon22:33:031
179699480,3rtkit-daemon1795-21rtkit-daemon00:15:231
179699470,3rtkit-daemon1795-21rtkit-daemon20:23:420
179699450,3rtkit-daemon1795-21rtkit-daemon19:25:430
4056232994239,2cyclictest0-21swapper/120:55:311
294692400,2sleep00-21swapper/023:50:170
405623299390,37cyclictest37672-1kworker/1:2H00:05:261
179699390,3rtkit-daemon0-21swapper/123:07:561
179699390,3rtkit-daemon0-21swapper/121:01:321
179699370,5rtkit-daemon1701-21cron20:19:561
179699370,3rtkit-daemon0-21swapper/123:26:461
179699370,3rtkit-daemon0-21swapper/019:59:090
449502360,3sleep00-21swapper/000:10:450
179699360,3rtkit-daemon0-21swapper/021:56:080
179699360,3rtkit-daemon0-21swapper/019:47:460
179699350,4rtkit-daemon1795-21rtkit-daemon21:29:571
179699350,3rtkit-daemon0-21swapper/100:33:501
179699350,3rtkit-daemon0-21swapper/022:52:410
179699350,3rtkit-daemon0-21swapper/020:07:080
179699350,3rtkit-daemon0-21swapper/019:37:180
4056232993421,4cyclictest4114742-1kworker/u9:021:50:151
179699340,4rtkit-daemon1795-21rtkit-daemon22:07:250
179699340,4rtkit-daemon1795-21rtkit-daemon21:31:041
179699340,4rtkit-daemon1795-21rtkit-daemon20:00:190
179699340,3rtkit-daemon0-21swapper/119:23:020
179699340,3rtkit-daemon0-21swapper/019:54:351
179699340,3rtkit-daemon0-21swapper/019:35:201
4056232993313,5cyclictest26-21ksoftirqd/120:30:011
179699330,4rtkit-daemon1795-21rtkit-daemon23:19:431
179699330,4rtkit-daemon1795-21rtkit-daemon21:33:340
179699330,4rtkit-daemon1795-21rtkit-daemon21:19:011
179699330,3rtkit-daemon1795-21rtkit-daemon22:21:000
179699330,3rtkit-daemon1795-21rtkit-daemon22:20:590
179699330,3rtkit-daemon0-21swapper/123:58:260
179699330,3rtkit-daemon0-21swapper/021:42:510
179699330,3rtkit-daemon0-21swapper/021:37:221
179699330,3rtkit-daemon0-21swapper/020:42:331
179699330,3rtkit-daemon0-21swapper/020:00:401
179699330,3rtkit-daemon0-21swapper/019:34:520
405623299322,23cyclictest4094967-21apt-get20:45:151
179699320,4rtkit-daemon1795-21rtkit-daemon23:47:111
179699320,3rtkit-daemon1795-21rtkit-daemon22:25:400
179699320,3rtkit-daemon0-21swapper/100:06:100
179699320,3rtkit-daemon0-21swapper/022:24:021
179699320,3rtkit-daemon0-21swapper/022:24:021
179699320,3rtkit-daemon0-21swapper/021:57:501
179699320,3rtkit-daemon0-21swapper/021:48:541
179699320,3rtkit-daemon0-21swapper/020:09:581
179699320,3rtkit-daemon0-21swapper/019:10:481
405623299318,3cyclictest26-21ksoftirqd/121:40:111
4056225993126,3cyclictest53011-21tr00:25:160
179699310,3rtkit-daemon0-21swapper/019:56:421
179699310,3rtkit-daemon0-21swapper/019:43:301
179699310,3rtkit-daemon0-21swapper/019:27:351
179699310,2rtkit-daemon0-21swapper/020:24:461
41117872300,3sleep00-21swapper/021:17:290
4056225993027,2cyclictest66950irq/132-enp2s022:36:280
179699300,3rtkit-daemon0-21swapper/022:26:001
179699300,3rtkit-daemon0-21swapper/022:19:421
4056232992911,4cyclictest26-21ksoftirqd/122:06:161
4056232992910,8cyclictest4169243-21/usr/sbin/munin22:35:251
179699290,3rtkit-daemon0-21swapper/119:13:140
179699290,3rtkit-daemon0-21swapper/022:55:581
179699290,3rtkit-daemon0-21swapper/020:39:161
179699290,3rtkit-daemon0-21swapper/019:48:141
405623299288,8cyclictest26-21ksoftirqd/123:33:361
405623299284,6cyclictest26-21ksoftirqd/122:50:121
405623299284,2cyclictest141rcu_preempt19:30:011
4056232992810,3cyclictest26-21ksoftirqd/100:36:491
179699280,4rtkit-daemon0-21swapper/100:15:150
179699280,3rtkit-daemon0-21swapper/123:34:040
179699280,3rtkit-daemon0-21swapper/020:54:581
405623299279,2cyclictest141rcu_preempt22:45:191
405623299278,17cyclictest35955-21python300:00:011
405623299273,2cyclictest141rcu_preempt23:50:031
4056232992710,15cyclictest26-21ksoftirqd/123:45:011
4056225992712,8cyclictest4135643-21apt-get21:50:120
179699270,3rtkit-daemon0-21swapper/123:39:460
405623299269,4cyclictest26-21ksoftirqd/123:00:481
405623299269,4cyclictest26-21ksoftirqd/100:00:281
405623299269,3cyclictest26-21ksoftirqd/122:10:191
405623299269,2cyclictest141rcu_preempt22:04:291
405623299266,3cyclictest141rcu_preempt00:30:011
4056232992611,4cyclictest26-21ksoftirqd/100:10:011
179699260,4rtkit-daemon4108897-21ssh21:14:241
405623299250,3cyclictest17752-40apt-check23:35:121
405622599254,14cyclictest4080857-21apt-get20:10:110
4056225992521,3cyclictest66950irq/132-enp2s021:09:550
4056225992517,6cyclictest6634-21df23:20:150
405622599250,6cyclictest0-21swapper/021:20:300
179699250,3rtkit-daemon0-21swapper/123:20:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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