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2026-03-17 - 21:52
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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 Mar 17, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
380916423380,9sleep00-21swapper/007:05:240
38100172274184,29sleep10-21swapper/107:08:311
383241821550,8sleep126-21ksoftirqd/108:05:001
394516421260,3sleep0161rcuc/011:10:040
39666452610,5sleep10-21swapper/111:40:161
39460662590,1sleep10-21swapper/111:10:211
179699560,3rtkit-daemon1795-21rtkit-daemon11:20:271
179699560,3rtkit-daemon0-21swapper/010:55:280
179699540,3rtkit-daemon1795-21rtkit-daemon08:48:121
179699530,4rtkit-daemon1795-21rtkit-daemon11:51:481
179699520,6rtkit-daemon3879384-21ssh09:37:120
179699500,4rtkit-daemon1795-21rtkit-daemon09:29:550
179699500,4rtkit-daemon1795-21rtkit-daemon08:45:120
179699500,3rtkit-daemon1795-21rtkit-daemon09:51:011
179699500,3rtkit-daemon0-21swapper/011:33:150
179699490,3rtkit-daemon1795-21rtkit-daemon09:13:041
179699490,3rtkit-daemon1795-21rtkit-daemon07:31:090
179699490,3rtkit-daemon0-21swapper/010:08:060
179699490,3rtkit-daemon0-21swapper/009:32:580
179699480,4rtkit-daemon1795-21rtkit-daemon07:46:530
179699480,3rtkit-daemon1795-21rtkit-daemon12:21:330
179699480,3rtkit-daemon1795-21rtkit-daemon09:22:140
179699480,3rtkit-daemon0-21swapper/012:10:310
3810285994720,4cyclictest26-21ksoftirqd/110:00:011
179699470,3rtkit-daemon1795-21rtkit-daemon07:11:400
179699460,1rtkit-daemon1795-21rtkit-daemon10:02:140
179699450,3rtkit-daemon1795-21rtkit-daemon07:54:420
179699450,3rtkit-daemon0-21swapper/008:03:070
179699450,1rtkit-daemon1795-21rtkit-daemon09:59:280
39768742440,2sleep10-21swapper/111:55:011
39181002440,2sleep10-21swapper/110:30:231
179699440,4rtkit-daemon1795-21rtkit-daemon09:16:040
179699440,3rtkit-daemon1795-21rtkit-daemon08:10:310
179699440,3rtkit-daemon0-21swapper/010:56:041
179699440,1rtkit-daemon1795-21rtkit-daemon09:11:270
179699430,3rtkit-daemon1795-21rtkit-daemon08:28:180
179699430,1rtkit-daemon1795-21rtkit-daemon08:30:260
3810285994216,7cyclictest26-21ksoftirqd/109:20:001
179699420,4rtkit-daemon1795-21rtkit-daemon11:39:390
179699420,4rtkit-daemon1795-21rtkit-daemon08:42:460
179699420,1rtkit-daemon1795-21rtkit-daemon12:35:100
179699420,1rtkit-daemon1795-21rtkit-daemon08:20:050
179699410,4rtkit-daemon3993316-21ssh12:17:231
179699410,3rtkit-daemon1795-21rtkit-daemon09:08:350
179699410,3rtkit-daemon1795-21rtkit-daemon07:57:241
179699410,1rtkit-daemon1795-21rtkit-daemon11:17:350
381028599406,9cyclictest26-21ksoftirqd/111:00:231
179699400,4rtkit-daemon1795-21rtkit-daemon10:28:351
179699400,3rtkit-daemon1795-21rtkit-daemon10:33:450
179699400,3rtkit-daemon0-21swapper/108:59:231
179699400,1rtkit-daemon1795-21rtkit-daemon11:41:590
38839182390,10sleep126-21ksoftirqd/109:44:421
381028599396,8cyclictest26-21ksoftirqd/110:00:221
381028599394,10cyclictest26-21ksoftirqd/112:15:001
179699390,3rtkit-daemon1795-21rtkit-daemon08:14:561
179699390,1rtkit-daemon1795-21rtkit-daemon10:28:280
3810285993812,10cyclictest26-21ksoftirqd/109:10:001
179699380,3rtkit-daemon1795-21rtkit-daemon10:37:201
179699380,3rtkit-daemon0-21swapper/109:04:431
179699380,1rtkit-daemon1795-21rtkit-daemon10:21:080
179699380,12rtkit-daemon0-21swapper/111:50:330
179699380,12rtkit-daemon0-21swapper/107:39:460
381028599377,9cyclictest26-21ksoftirqd/107:55:001
381028599376,2cyclictest3966208-1kworker/1:0H11:50:011
381028599374,10cyclictest26-21ksoftirqd/109:40:001
3810285993714,3cyclictest26-21ksoftirqd/108:25:011
3810285993713,3cyclictest26-21ksoftirqd/110:15:001
381027999375,7cyclictest13-21ksoftirqd/008:05:210
179699370,3rtkit-daemon1795-21rtkit-daemon10:23:541
179699370,3rtkit-daemon0-21swapper/010:18:381
179699370,1rtkit-daemon1795-21rtkit-daemon09:54:080
179699370,1rtkit-daemon1795-21rtkit-daemon08:38:350
381028599365,10cyclictest26-21ksoftirqd/110:45:001
3810285993616,4cyclictest26-21ksoftirqd/110:50:011
3810285993614,4cyclictest26-21ksoftirqd/110:10:001
381027999361,7cyclictest13-21ksoftirqd/011:50:000
381027999360,8cyclictest13-21ksoftirqd/012:10:010
179699360,12rtkit-daemon0-21swapper/108:19:260
3810285993520,3cyclictest26-21ksoftirqd/112:40:011
3810285993516,4cyclictest26-21ksoftirqd/108:10:001
381028599350,33cyclictest0-21swapper/107:25:111
381027999353,7cyclictest3880803-21apt-get09:40:130
381027999351,8cyclictest13-21ksoftirqd/008:00:000
179699350,3rtkit-daemon0-21swapper/011:00:100
179699350,11rtkit-daemon0-21swapper/108:52:320
381028599349,3cyclictest141rcu_preempt09:20:231
381028599348,9cyclictest26-21ksoftirqd/111:15:031
381028599348,8cyclictest26-21ksoftirqd/111:06:251
3810285993410,3cyclictest26-21ksoftirqd/112:30:261
381027999340,7cyclictest3905948-21apt-get10:15:120
381028599337,9cyclictest26-21ksoftirqd/111:35:011
381028599335,3cyclictest26-21ksoftirqd/109:30:231
381028599333,10cyclictest26-21ksoftirqd/112:00:011
3810285993319,3cyclictest26-21ksoftirqd/112:25:011
381028599331,5cyclictest26-21ksoftirqd/111:30:011
3810285993310,9cyclictest3984063-21apt-get12:05:131
381028599330,7cyclictest3852058-21/usr/sbin/munin08:50:201
381028599330,3cyclictest3873244-21latency_hist09:30:011
381027999336,6cyclictest3980134-21rm11:59:360
381027999332,7cyclictest13-21ksoftirqd/011:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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