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2025-06-17 - 02:06
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack0slot0.osadl.org (updated Tue Jun 17, 2025 00:45:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1576121530,0sleep115762-21sshd23:03:341
796921410,0sleep30-21swapper/321:23:173
1535621340,6sleep71179999cyclictest22:23:497
1586321080,0sleep20-21swapper/222:23:522
323792970,2sleep30-21swapper/300:38:003
177552900,1sleep40-21swapper/421:17:424
218832800,0sleep60-21swapper/600:10:156
24542790,0sleep10-21swapper/123:15:201
263092780,4sleep01175799cyclictest23:07:570
89142770,1sleep10-21swapper/100:18:511
110952770,0sleep70-21swapper/700:25:377
287732760,1sleep6671rcuc/622:21:466
45352750,0sleep50-21swapper/521:22:565
236722750,1sleep40-21swapper/423:24:114
11752750,0sleep20-21swapper/223:01:582
111582740,1sleep70-21swapper/721:23:377
258032730,1sleep70-21swapper/721:54:557
305562720,0sleep70-21swapper/722:48:337
29712720,0sleep40-21swapper/422:19:124
43522710,0sleep0465-21systemd-journal21:16:180
64302700,0sleep00-21swapper/000:35:170
219702700,0sleep10-21swapper/123:24:011
214062700,1sleep5581rcuc/522:47:355
188612700,0sleep50-21swapper/522:00:375
109412700,0sleep20-21swapper/200:02:252
30342690,0sleep00-21swapper/000:35:010
39472680,0sleep20-21swapper/221:35:592
114122660,0sleep10-21swapper/121:46:401
279662610,0sleep00-21swapper/023:27:520
1152126128,7sleep30-21swapper/319:09:553
217902600,0sleep40-21swapper/421:41:064
1151625848,6sleep70-21swapper/719:09:517
1135325848,6sleep40-21swapper/419:07:474
164452560,0sleep20-21swapper/200:19:402
1124925342,7sleep50-21swapper/519:06:285
949424737,6sleep10-21swapper/119:05:031
255012470,4sleep01175799cyclictest00:23:550
1119024332,7sleep00-21swapper/019:05:420
1135524231,7sleep60-21swapper/619:07:506
1138723928,7sleep20-21swapper/219:08:102
210792250,0sleep00-21swapper/021:27:560
206022250,0sleep60-21swapper/621:54:226
198692250,0sleep4491rcuc/423:46:484
28132230,0sleep6671rcuc/623:25:196
27782220,1sleep6681ktimersoftd/600:01:336
231332220,1sleep023123-21sshd23:04:200
259492210,0sleep40-21swapper/423:40:464
249552210,0sleep50-21swapper/500:30:255
243882210,1sleep7771ktimersoftd/722:57:467
38122200,1sleep60-21swapper/623:05:316
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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