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2026-04-28 - 13:04
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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 Tue Apr 28, 2026 00:49:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
155819925152,1cyclictest151rcu_preempt23:17:400
3273912150,207ptp4l0-21swapper/119:05:321
156949920722,1cyclictest151rcu_preempt00:27:0315
156089917317,140cyclictest0-21swapper/600:15:2728
156199916823,124cyclictest0-21swapper/921:00:1031
156199916723,107cyclictest0-21swapper/923:06:4631
156199916623,113cyclictest0-21swapper/923:18:0031
156089916517,147cyclictest0-21swapper/619:45:1628
156199916423,140cyclictest0-21swapper/920:15:1431
156199916422,114cyclictest0-21swapper/922:14:2531
156199916422,114cyclictest0-21swapper/922:14:2431
156199916419,137cyclictest0-21swapper/919:15:3031
156319916272,89cyclictest88-21ksoftirqd/1200:39:534
156319915832,90cyclictest0-21swapper/1200:35:004
156319915830,123cyclictest0-21swapper/1221:25:194
156319915830,123cyclictest0-21swapper/1221:25:194
156199915819,108cyclictest0-21swapper/920:28:1031
156279915632,122cyclictest0-21swapper/1100:08:483
156089915617,86cyclictest0-21swapper/619:30:1728
1560899156155,1cyclictest26516-21latency19:15:2028
156089915486,68cyclictest52-21ksoftirqd/623:40:5528
156279915333,72cyclictest0-21swapper/1119:30:223
156319915132,53cyclictest0-21swapper/1219:20:114
156089915117,98cyclictest0-21swapper/623:24:2128
156319914830,62cyclictest0-21swapper/1222:45:154
330891146138,6phc2sys0-21swapper/219:08:2112
156319914626,116cyclictest0-21swapper/1222:10:134
156319914626,116cyclictest0-21swapper/1222:10:124
156199914623,71cyclictest0-21swapper/922:30:1231
156199914623,71cyclictest0-21swapper/922:30:1231
156089914616,31cyclictest0-21swapper/621:54:0328
156089914616,31cyclictest0-21swapper/621:54:0228
15603991460,86cyclictest0-21swapper/520:17:5027
156669914452,60cyclictest0-21swapper/1822:06:3110
156669914452,60cyclictest0-21swapper/1822:06:3010
156199914418,98cyclictest0-21swapper/900:06:0631
156009914430,64cyclictest0-21swapper/400:10:1326
156039914348,64cyclictest0-21swapper/522:35:1027
156039914348,64cyclictest0-21swapper/522:35:1027
156009914355,62cyclictest0-21swapper/422:35:0326
156009914355,62cyclictest0-21swapper/422:35:0226
156009914331,67cyclictest0-21swapper/400:05:0026
15619991420,84cyclictest0-21swapper/900:29:0631
156039914253,68cyclictest0-21swapper/523:13:0727
156669914148,64cyclictest0-21swapper/1823:13:3510
156669914126,72cyclictest0-21swapper/1821:51:0310
156669914126,72cyclictest0-21swapper/1821:51:0210
156039914128,69cyclictest0-21swapper/520:35:2727
156009914147,59cyclictest0-21swapper/421:50:1826
156009914147,59cyclictest0-21swapper/421:50:1826
157179914028,45cyclictest0-21swapper/2620:50:1419
156039914055,60cyclictest0-21swapper/522:55:2927
156009914028,63cyclictest0-21swapper/423:15:2026
156669913950,67cyclictest0-21swapper/1800:20:4110
156669913928,64cyclictest0-21swapper/1823:07:5910
156669913927,65cyclictest0-21swapper/1823:18:5810
156319913918,61cyclictest0-21swapper/1221:16:324
156039913959,68cyclictest0-21swapper/500:24:4427
156039913945,64cyclictest0-21swapper/523:06:4327
156669913853,63cyclictest0-21swapper/1823:33:0810
156039913863,60cyclictest0-21swapper/523:34:3027
156039913850,62cyclictest0-21swapper/522:51:5527
156039913830,67cyclictest0-21swapper/521:11:1527
15603991380,80cyclictest0-21swapper/521:23:3327
15603991380,80cyclictest0-21swapper/521:23:3327
156669913727,67cyclictest0-21swapper/1800:08:2310
156279913730,54cyclictest0-21swapper/1122:05:203
156279913730,54cyclictest0-21swapper/1122:05:203
156199913723,73cyclictest0-21swapper/922:23:3031
156199913723,73cyclictest0-21swapper/922:23:2931
156039913752,65cyclictest0-21swapper/500:05:3027
156039913729,72cyclictest0-21swapper/521:29:5927
156039913729,72cyclictest0-21swapper/521:29:5827
156039913729,67cyclictest0-21swapper/523:39:5027
156039913726,69cyclictest0-21swapper/523:59:3727
156009913739,61cyclictest0-21swapper/421:15:2026
156669913620,13cyclictest0-21swapper/1820:59:4210
15619991360,84cyclictest0-21swapper/922:18:0831
15619991360,84cyclictest0-21swapper/922:18:0831
156039913631,62cyclictest0-21swapper/520:05:3227
156039913625,67cyclictest0-21swapper/523:43:0327
156039913621,64cyclictest0-21swapper/500:17:4727
15603991360,85cyclictest0-21swapper/500:29:3327
156669913560,64cyclictest0-21swapper/1821:17:5310
156669913527,66cyclictest0-21swapper/1823:45:5610
156469913537,69cyclictest0-21swapper/1523:41:387
156039913544,62cyclictest0-21swapper/521:05:0327
156039913540,63cyclictest0-21swapper/521:19:1727
156009913530,62cyclictest0-21swapper/420:51:0826
156009913518,70cyclictest0-21swapper/419:30:2826
156669913430,62cyclictest0-21swapper/1822:00:0810
156669913430,62cyclictest0-21swapper/1822:00:0710
156669913430,60cyclictest0-21swapper/1821:11:5910
156319913443,43cyclictest0-21swapper/1223:47:184
156039913455,61cyclictest0-21swapper/521:54:5027
156039913455,61cyclictest0-21swapper/521:54:4927
156039913427,67cyclictest0-21swapper/500:00:4127
156039913425,67cyclictest0-21swapper/523:18:4527
156009913447,50cyclictest0-21swapper/419:40:1226
156669913329,60cyclictest0-21swapper/1822:33:1610
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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