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2026-03-06 - 13:24
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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 Mar 06, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38752232255214,27sleep10-21swapper/119:07:191
38751752250183,52sleep00-21swapper/019:06:510
179699580,4rtkit-daemon1795-21rtkit-daemon21:27:020
179699560,4rtkit-daemon1795-21rtkit-daemon23:36:340
179699560,4rtkit-daemon1795-21rtkit-daemon22:00:261
179699520,4rtkit-daemon1795-21rtkit-daemon00:32:491
179699520,11rtkit-daemon1795-21rtkit-daemon22:36:150
179699500,4rtkit-daemon1795-21rtkit-daemon21:32:480
179699500,4rtkit-daemon1795-21rtkit-daemon20:34:131
179699480,3rtkit-daemon1795-21rtkit-daemon00:20:520
38868462460,1sleep13886845-21/usr/sbin/munin19:35:201
40344822440,3sleep10-21swapper/123:40:141
179699420,4rtkit-daemon1795-21rtkit-daemon00:25:030
39924452380,2sleep00-21swapper/022:40:570
39429372380,27sleep13942945-21ssh21:34:291
179699380,3rtkit-daemon0-21swapper/021:43:280
387559699371,34cyclictest0-21swapper/123:15:271
179699370,4rtkit-daemon1795-21rtkit-daemon23:10:240
179699370,3rtkit-daemon0-21swapper/023:55:160
179699360,3rtkit-daemon0-21swapper/022:17:410
179699360,3rtkit-daemon0-21swapper/021:16:230
179699350,4rtkit-daemon1795-21rtkit-daemon22:04:150
179699350,4rtkit-daemon1795-21rtkit-daemon21:21:020
179699350,4rtkit-daemon1795-21rtkit-daemon21:10:261
179699350,4rtkit-daemon1795-21rtkit-daemon20:25:001
179699350,3rtkit-daemon1795-21rtkit-daemon20:55:130
179699350,3rtkit-daemon0-21swapper/121:53:021
179699350,3rtkit-daemon0-21swapper/120:35:461
179699340,3rtkit-daemon1795-21rtkit-daemon00:18:350
179699340,3rtkit-daemon0-21swapper/120:35:130
179699340,3rtkit-daemon0-21swapper/023:55:241
179699340,3rtkit-daemon0-21swapper/019:33:510
3875596993329,3cyclictest66950irq/132-enp2s023:38:291
3875596993329,2cyclictest3912263-21kworker/1:021:00:051
179699330,4rtkit-daemon1795-21rtkit-daemon23:25:260
179699330,4rtkit-daemon1795-21rtkit-daemon22:27:520
179699330,4rtkit-daemon1795-21rtkit-daemon19:23:340
179699330,3rtkit-daemon1795-21rtkit-daemon00:38:551
179699330,3rtkit-daemon0-21swapper/019:20:491
3875592993226,4cyclictest3926585-21rm21:10:460
179699320,4rtkit-daemon1795-21rtkit-daemon21:05:490
179699320,3rtkit-daemon1795-21rtkit-daemon21:47:120
179699320,3rtkit-daemon1795-21rtkit-daemon20:27:171
179699320,3rtkit-daemon0-21swapper/121:58:480
179699320,3rtkit-daemon0-21swapper/121:54:400
179699320,3rtkit-daemon0-21swapper/120:27:120
179699320,3rtkit-daemon0-21swapper/100:37:350
40409322310,9sleep013-21ksoftirqd/023:49:450
179699310,3rtkit-daemon3877669-21munin-node23:23:041
179699310,3rtkit-daemon1795-21rtkit-daemon22:51:540
179699310,3rtkit-daemon1795-21rtkit-daemon20:53:280
179699310,3rtkit-daemon0-21swapper/120:31:520
179699310,3rtkit-daemon0-21swapper/000:15:431
3875596993018,6cyclictest3890485-40apt-check19:45:141
179699300,5rtkit-daemon4000250-21ssh22:52:431
179699300,4rtkit-daemon0-21swapper/022:38:351
179699300,4rtkit-daemon0-21swapper/022:16:221
179699300,3rtkit-daemon1795-21rtkit-daemon23:05:370
179699300,3rtkit-daemon0-21swapper/121:01:350
179699300,3rtkit-daemon0-21swapper/022:44:571
179699300,3rtkit-daemon0-21swapper/021:16:581
179699300,3rtkit-daemon0-21swapper/020:15:191
3875596992926,2cyclictest66950irq/132-enp2s022:24:141
179699290,3rtkit-daemon0-21swapper/021:44:251
179699290,3rtkit-daemon0-21swapper/020:59:341
179699290,3rtkit-daemon0-21swapper/019:52:381
179699290,3rtkit-daemon0-21swapper/000:23:091
179699290,3rtkit-daemon0-21swapper/000:01:141
40485142280,6chrt0-21swapper/000:00:120
179699280,4rtkit-daemon1795-21rtkit-daemon23:34:551
179699280,3rtkit-daemon1795-21rtkit-daemon21:07:241
179699280,3rtkit-daemon1795-21rtkit-daemon00:12:551
179699280,3rtkit-daemon0-21swapper/119:18:310
179699280,3rtkit-daemon0-21swapper/022:49:341
179699280,3rtkit-daemon0-21swapper/022:06:521
179699280,3rtkit-daemon0-21swapper/021:21:101
179699280,3rtkit-daemon0-21swapper/020:12:191
179699280,3rtkit-daemon0-21swapper/019:13:081
179699280,3rtkit-daemon0-21swapper/000:29:591
387559699273,18cyclictest4037895-21apt-get23:45:151
387559299274,5cyclictest13-21ksoftirqd/022:06:580
387559299272,5cyclictest0-21swapper/023:40:050
179699270,3rtkit-daemon0-21swapper/023:54:181
179699270,3rtkit-daemon0-21swapper/023:10:391
179699270,3rtkit-daemon0-21swapper/023:02:461
179699270,3rtkit-daemon0-21swapper/022:14:101
179699270,3rtkit-daemon0-21swapper/020:46:251
179699270,3rtkit-daemon0-21swapper/020:40:071
179699270,3rtkit-daemon0-21swapper/020:07:551
387559699263,10cyclictest3936105-21apt-get21:25:151
387559299269,2cyclictest141rcu_preempt22:58:330
3875592992611,5cyclictest4070667-21rm00:32:030
179699260,3rtkit-daemon1795-21rtkit-daemon19:30:261
179699260,3rtkit-daemon0-21swapper/023:25:481
179699260,3rtkit-daemon0-21swapper/020:53:341
3875596992510,10cyclictest3894424-21apt-get19:55:131
3875592992510,9cyclictest3976290-21apt-get22:20:150
179699250,3rtkit-daemon0-21swapper/022:31:411
179699250,20rtkit-daemon3875587-21cyclictest23:05:151
179699250,1rtkit-daemon1795-21rtkit-daemon21:56:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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