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2026-04-20 - 12:50
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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 Mon Apr 20, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
387360123550,8sleep00-21swapper/019:05:200
38748452249183,51sleep10-21swapper/119:08:321
39936132850,4sleep10-21swapper/122:45:541
179699580,4rtkit-daemon1795-21rtkit-daemon00:27:011
179699580,3rtkit-daemon1795-21rtkit-daemon22:13:380
179699560,4rtkit-daemon1795-21rtkit-daemon00:23:401
179699560,3rtkit-daemon1795-21rtkit-daemon21:48:201
179699550,4rtkit-daemon1795-21rtkit-daemon23:44:240
179699550,3rtkit-daemon1795-21rtkit-daemon22:58:331
179699540,4rtkit-daemon1795-21rtkit-daemon20:17:441
179699540,3rtkit-daemon1795-21rtkit-daemon23:44:461
179699520,4rtkit-daemon1795-21rtkit-daemon20:25:051
179699510,3rtkit-daemon1795-21rtkit-daemon21:43:031
179699510,21rtkit-daemon3875170-21cyclictest21:14:511
179699500,3rtkit-daemon1795-21rtkit-daemon22:01:251
179699500,20rtkit-daemon3875170-21cyclictest19:31:311
179699490,3rtkit-daemon1795-21rtkit-daemon20:46:491
179699490,3rtkit-daemon1795-21rtkit-daemon20:11:421
179699490,19rtkit-daemon1795-21rtkit-daemon00:00:401
179699480,3rtkit-daemon0-21swapper/100:06:221
179699480,20rtkit-daemon3875170-21cyclictest00:35:461
179699470,20rtkit-daemon0-21swapper/021:51:371
39626852460,4sleep013-21ksoftirqd/022:02:180
179699370,6rtkit-daemon0-21swapper/121:21:091
179699370,4rtkit-daemon0-21swapper/119:26:181
179699360,3rtkit-daemon0-21swapper/123:20:391
179699360,3rtkit-daemon0-21swapper/122:06:331
179699360,3rtkit-daemon0-21swapper/121:39:010
179699360,3rtkit-daemon0-21swapper/100:19:321
179699360,3rtkit-daemon0-21swapper/100:13:521
3875173993529,4cyclictest2503342-1kworker/0:1H19:10:170
179699350,4rtkit-daemon1795-21rtkit-daemon19:46:311
179699350,3rtkit-daemon0-21swapper/123:17:570
179699350,3rtkit-daemon0-21swapper/121:59:091
179699350,2rtkit-daemon1795-21rtkit-daemon21:39:161
179699340,3rtkit-daemon0-21swapper/122:27:190
179699340,3rtkit-daemon0-21swapper/121:55:150
179699340,3rtkit-daemon0-21swapper/119:16:141
179699340,3rtkit-daemon0-21swapper/100:28:340
3875184993330,2cyclictest18150irq/39-mmc023:15:301
179699330,4rtkit-daemon1795-21rtkit-daemon20:19:530
179699330,3rtkit-daemon1795-21rtkit-daemon22:40:470
179699330,3rtkit-daemon1795-21rtkit-daemon22:27:561
179699330,3rtkit-daemon0-21swapper/121:41:460
179699330,3rtkit-daemon0-21swapper/121:13:130
179699330,3rtkit-daemon0-21swapper/120:26:260
179699330,3rtkit-daemon0-21swapper/120:10:390
179699330,3rtkit-daemon0-21swapper/119:22:111
39403922320,6sleep00-21swapper/021:30:210
179699320,3rtkit-daemon0-21swapper/123:05:420
179699320,3rtkit-daemon0-21swapper/123:02:590
179699320,3rtkit-daemon0-21swapper/120:47:020
179699320,3rtkit-daemon0-21swapper/120:32:510
179699320,3rtkit-daemon0-21swapper/119:35:340
179699320,3rtkit-daemon0-21swapper/100:13:320
179699320,2rtkit-daemon1795-21rtkit-daemon23:01:561
179699310,4rtkit-daemon1795-21rtkit-daemon19:33:580
179699310,3rtkit-daemon0-21swapper/121:53:140
179699310,3rtkit-daemon0-21swapper/121:00:590
179699310,3rtkit-daemon0-21swapper/119:44:320
179699310,3rtkit-daemon0-21swapper/100:15:450
40259582300,4chrt0-21swapper/123:33:461
3875184993027,2cyclictest3893715-21kworker/1:219:54:461
3875184993027,2cyclictest3893715-21kworker/1:219:54:461
179699300,4rtkit-daemon1795-21rtkit-daemon00:23:330
179699300,3rtkit-daemon0-21swapper/119:15:300
179699300,3rtkit-daemon0-21swapper/100:02:560
179699300,25rtkit-daemon893-21snmpd21:05:261
179699290,4rtkit-daemon3935119-21ssh21:22:540
179699290,3rtkit-daemon0-21swapper/123:59:220
179699290,3rtkit-daemon0-21swapper/122:55:020
179699290,3rtkit-daemon0-21swapper/122:32:160
179699290,3rtkit-daemon0-21swapper/120:53:220
179699290,3rtkit-daemon0-21swapper/120:07:500
179699290,3rtkit-daemon0-21swapper/119:27:360
179699290,3rtkit-daemon0-21swapper/100:39:070
179699280,3rtkit-daemon0-21swapper/122:51:010
179699280,3rtkit-daemon0-21swapper/122:23:080
40642802270,3sleep0161rcuc/000:30:180
179699270,3rtkit-daemon0-21swapper/123:26:180
179699270,3rtkit-daemon0-21swapper/119:48:390
179699270,23rtkit-daemon893-21snmpd22:37:291
179699270,22rtkit-daemon3877700-21munin-node22:34:301
179699270,1rtkit-daemon1795-21rtkit-daemon21:03:091
387518499260,6cyclictest0-21swapper/120:56:121
387517399263,15cyclictest3984693-21apt-get22:35:130
179699260,22rtkit-daemon3877700-21munin-node23:36:241
387518499256,3cyclictest141rcu_preempt23:53:341
3875184992512,7cyclictest66950irq/132-enp2s023:55:131
387518499250,6cyclictest0-21swapper/120:20:371
179699250,1rtkit-daemon1795-21rtkit-daemon23:36:430
387518499245,17cyclictest3887950-21apt-config19:40:011
387518499243,15cyclictest3995458-21apt-get22:50:141
387518499242,15cyclictest3939608-21apt-get21:30:141
387518499242,14cyclictest3988569-21apt-get22:40:131
387518499242,14cyclictest3894345-21apt-get19:55:151
3875184992413,6cyclictest66950irq/132-enp2s023:10:131
387518499240,6cyclictest0-21swapper/119:40:461
387517399248,10cyclictest4010973-1kworker/u9:023:20:130
387517399242,15cyclictest3912773-21apt-get20:40:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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