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2025-12-12 - 17:06
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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 100 highest latencies:
System rackcslot8.osadl.org (updated Fri Dec 12, 2025 00:49:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2482912660,258ptp4l0-21swapper/119:09:361
2482912660,258ptp4l0-21swapper/119:09:351
24359924949,196cyclictest151rcu_preempt00:25:2213
23409924851,172cyclictest151rcu_preempt00:22:2428
23409924851,172cyclictest151rcu_preempt00:22:2428
329891241233,6phc2sys0-21swapper/219:06:5012
329891241233,6phc2sys0-21swapper/219:06:4912
23529920639,86cyclictest151rcu_preempt22:46:0330
2366992040,201cyclictest0-21swapper/1022:04:032
23529920328,96cyclictest0-21swapper/823:57:5430
23529916127,109cyclictest151rcu_preempt22:08:3830
23769915120,65cyclictest0-21swapper/1219:30:134
23769915120,65cyclictest0-21swapper/1219:30:134
23769915021,11cyclictest0-21swapper/1220:42:244
23769914921,42cyclictest0-21swapper/1222:35:254
23769914921,17cyclictest0-21swapper/1219:50:194
23769914921,118cyclictest0-21swapper/1222:45:174
2382991470,87cyclictest0-21swapper/1319:30:145
2382991470,87cyclictest0-21swapper/1319:30:145
23769914721,95cyclictest0-21swapper/1223:47:054
23769914721,75cyclictest0-21swapper/1221:15:024
23769914621,91cyclictest0-21swapper/1200:05:164
23769914621,91cyclictest0-21swapper/1200:05:154
2420991450,80cyclictest0-21swapper/1819:10:3310
2420991450,80cyclictest0-21swapper/1819:10:3310
2420991440,86cyclictest0-21swapper/1823:17:5610
2448991411,136cyclictest151rcu_preempt22:03:4215
2420991410,84cyclictest0-21swapper/1820:00:1310
23769914120,27cyclictest0-21swapper/1223:38:304
2420991400,83cyclictest0-21swapper/1819:24:5810
2420991400,83cyclictest0-21swapper/1819:24:5710
2382991400,85cyclictest0-21swapper/1322:57:335
2420991390,82cyclictest0-21swapper/1822:03:0710
2420991390,82cyclictest0-21swapper/1820:16:4810
2420991380,83cyclictest0-21swapper/1822:50:4210
23829913848,59cyclictest0-21swapper/1323:28:025
23829913848,59cyclictest0-21swapper/1323:28:025
2479991370,87cyclictest0-21swapper/2621:45:3819
24209913729,64cyclictest0-21swapper/1819:29:1510
24209913729,64cyclictest0-21swapper/1819:29:1410
2420991371,84cyclictest0-21swapper/1800:17:4710
2420991371,84cyclictest0-21swapper/1800:17:4710
23829913750,54cyclictest0-21swapper/1322:36:065
23829913729,70cyclictest0-21swapper/1320:45:345
2382991371,81cyclictest0-21swapper/1320:20:275
2455991360,80cyclictest0-21swapper/2321:10:1816
24209913655,62cyclictest0-21swapper/1821:20:2310
24209913627,62cyclictest0-21swapper/1821:40:0810
2420991360,84cyclictest0-21swapper/1822:24:3110
2420991360,81cyclictest0-21swapper/1819:15:2110
2420991360,81cyclictest0-21swapper/1819:15:2010
23829913652,59cyclictest0-21swapper/1323:50:145
2420991350,76cyclictest0-21swapper/1800:09:1610
2420991350,76cyclictest0-21swapper/1800:09:1610
23979913556,59cyclictest0-21swapper/1522:34:367
23829913553,59cyclictest0-21swapper/1320:25:485
23829913547,61cyclictest0-21swapper/1321:44:555
23829913546,61cyclictest0-21swapper/1300:32:415
23829913546,61cyclictest0-21swapper/1300:32:415
23829913529,66cyclictest0-21swapper/1322:25:305
23829913528,69cyclictest0-21swapper/1322:10:005
2320991357,68cyclictest0-21swapper/420:15:1726
2420991340,79cyclictest0-21swapper/1820:25:2010
23829913450,66cyclictest0-21swapper/1300:03:045
23829913450,66cyclictest0-21swapper/1300:03:045
23829913449,70cyclictest0-21swapper/1300:23:075
23829913449,70cyclictest0-21swapper/1300:23:075
23829913449,57cyclictest0-21swapper/1319:24:565
23829913449,57cyclictest0-21swapper/1319:24:555
23829913448,54cyclictest0-21swapper/1319:12:035
23829913448,54cyclictest0-21swapper/1319:12:035
23829913446,56cyclictest0-21swapper/1300:27:085
23829913432,69cyclictest0-21swapper/1323:12:325
23829913428,69cyclictest0-21swapper/1300:14:315
23829913428,69cyclictest0-21swapper/1300:14:305
23829913428,67cyclictest0-21swapper/1321:29:555
2320991344,106cyclictest0-21swapper/423:54:5326
24719913352,57cyclictest0-21swapper/2521:22:0618
2420991330,82cyclictest0-21swapper/1800:35:5910
2420991330,82cyclictest0-21swapper/1800:35:5910
2420991330,79cyclictest0-21swapper/1800:25:1710
2420991330,74cyclictest0-21swapper/1820:34:5810
23979913343,53cyclictest0-21swapper/1500:35:557
23979913343,53cyclictest0-21swapper/1500:35:557
23979913327,66cyclictest0-21swapper/1523:12:347
23829913345,58cyclictest0-21swapper/1322:10:185
23829913345,56cyclictest0-21swapper/1319:46:485
23829913331,72cyclictest0-21swapper/1323:47:165
23829913330,70cyclictest0-21swapper/1300:19:525
23829913330,70cyclictest0-21swapper/1300:19:515
23829913329,74cyclictest0-21swapper/1300:37:305
23829913329,74cyclictest0-21swapper/1300:37:305
23829913329,67cyclictest0-21swapper/1322:24:575
23829913326,64cyclictest0-21swapper/1320:54:065
2376991339,108cyclictest0-21swapper/1220:20:174
23769913317,83cyclictest0-21swapper/1223:55:084
2373991331,81cyclictest0-21swapper/1120:20:303
24719913247,60cyclictest0-21swapper/2522:58:4918
24489913256,43cyclictest151rcu_preempt21:38:3515
24209913227,68cyclictest0-21swapper/1823:05:0810
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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