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2025-12-09 - 10:12
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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 Dec 09, 2025 00:49:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2482912830,275ptp4l0-21swapper/119:07:331
329891269261,6phc2sys0-21swapper/219:09:0712
168389926769,1cyclictest151rcu_preempt22:45:2512
169929917532,122cyclictest0-21swapper/2421:40:0517
169929917232,137cyclictest0-21swapper/2423:25:1417
169929916732,110cyclictest0-21swapper/2423:15:0217
169929916726,133cyclictest0-21swapper/2421:37:4417
17008991666,130cyclictest0-21swapper/2822:57:3021
169929916429,126cyclictest0-21swapper/2400:15:2417
169929916332,83cyclictest0-21swapper/2400:20:2217
169059915941,82cyclictest0-21swapper/1021:10:252
169059915537,110cyclictest0-21swapper/1023:50:132
168699915018,49cyclictest0-21swapper/622:30:1828
169929914721,86cyclictest0-21swapper/2421:15:1817
169579914615,108cyclictest0-21swapper/1822:37:2710
16950991460,87cyclictest0-21swapper/1720:55:049
16950991460,83cyclictest0-21swapper/1721:26:219
17008991456,125cyclictest0-21swapper/2823:15:2321
16869991450,84cyclictest0-21swapper/623:25:2128
16869991450,84cyclictest0-21swapper/622:58:5228
16950991430,83cyclictest0-21swapper/1722:03:129
16950991420,84cyclictest0-21swapper/1723:47:099
16924991420,88cyclictest0-21swapper/1322:03:565
170089914038,64cyclictest0-21swapper/2822:20:0121
16950991400,88cyclictest0-21swapper/1722:32:199
16869991400,81cyclictest0-21swapper/621:40:0128
170089913950,55cyclictest0-21swapper/2823:55:4421
169929913930,67cyclictest0-21swapper/2421:32:5517
16950991390,86cyclictest0-21swapper/1723:08:089
16924991390,87cyclictest0-21swapper/1323:55:055
168699913941,59cyclictest0-21swapper/621:32:2128
169509913830,65cyclictest0-21swapper/1722:09:219
169509913828,69cyclictest0-21swapper/1723:33:159
16950991380,83cyclictest0-21swapper/1722:18:119
169509913755,59cyclictest0-21swapper/1720:37:589
16950991370,82cyclictest0-21swapper/1700:33:379
168699913755,61cyclictest0-21swapper/623:13:1728
168699913748,58cyclictest0-21swapper/623:21:3328
168699913730,81cyclictest0-21swapper/622:14:4828
16950991360,77cyclictest0-21swapper/1721:05:139
168699913655,59cyclictest0-21swapper/623:57:0528
168699913649,58cyclictest0-21swapper/622:42:1828
168699913627,69cyclictest0-21swapper/623:09:3328
168699913625,65cyclictest0-21swapper/619:16:3428
168699913625,65cyclictest0-21swapper/619:16:3328
16869991360,80cyclictest0-21swapper/621:10:2128
1695799135134,1cyclictest151rcu_preempt00:22:5710
169509913529,70cyclictest0-21swapper/1700:14:569
169509913529,69cyclictest0-21swapper/1700:28:509
168699913529,70cyclictest0-21swapper/623:40:1828
168699913528,68cyclictest0-21swapper/623:19:4128
16869991350,81cyclictest0-21swapper/621:28:0128
16869991350,80cyclictest0-21swapper/621:24:5828
16858991350,83cyclictest0-21swapper/521:45:3827
169509913430,63cyclictest0-21swapper/1721:41:339
169509913429,73cyclictest0-21swapper/1723:51:579
169509913428,71cyclictest0-21swapper/1721:32:139
169509913425,75cyclictest0-21swapper/1700:04:469
16950991340,79cyclictest0-21swapper/1700:05:519
16896991340,80cyclictest0-21swapper/923:00:3131
168699913451,66cyclictest0-21swapper/623:32:3128
168699913431,67cyclictest0-21swapper/622:49:4728
168699913429,69cyclictest0-21swapper/621:53:2228
170089913333,60cyclictest0-21swapper/2820:25:0521
170089913333,60cyclictest0-21swapper/2820:25:0421
169509913330,72cyclictest0-21swapper/1722:49:109
169509913330,71cyclictest0-21swapper/1721:17:309
169509913330,66cyclictest0-21swapper/1722:39:489
169509913329,68cyclictest0-21swapper/1719:10:519
169509913328,65cyclictest0-21swapper/1721:55:429
169509913327,62cyclictest0-21swapper/1720:00:029
169509913327,62cyclictest0-21swapper/1720:00:019
16950991330,82cyclictest0-21swapper/1723:38:029
16950991330,80cyclictest0-21swapper/1719:20:299
16950991330,80cyclictest0-21swapper/1719:20:289
16950991330,79cyclictest0-21swapper/1722:40:209
16950991330,78cyclictest0-21swapper/1720:10:119
16950991330,78cyclictest0-21swapper/1720:10:119
16950991330,75cyclictest0-21swapper/1721:02:329
168699913326,66cyclictest0-21swapper/620:43:3928
169509913223,72cyclictest0-21swapper/1722:28:039
16950991320,81cyclictest0-21swapper/1723:16:419
16950991320,80cyclictest0-21swapper/1720:20:199
16950991320,80cyclictest0-21swapper/1720:20:199
16924991320,86cyclictest0-21swapper/1321:34:005
170089913139,55cyclictest0-21swapper/2822:05:0321
170089913129,62cyclictest0-21swapper/2820:34:1221
170089913129,62cyclictest0-21swapper/2820:34:1121
16950991318,73cyclictest0-21swapper/1722:12:339
169509913137,63cyclictest0-21swapper/1719:49:219
169509913137,63cyclictest0-21swapper/1719:49:219
169509913129,73cyclictest0-21swapper/1722:58:319
169509913127,68cyclictest0-21swapper/1722:20:029
169059913141,45cyclictest0-21swapper/1021:19:322
168699913129,71cyclictest0-21swapper/620:00:2328
168699913129,71cyclictest0-21swapper/620:00:2328
168699913127,68cyclictest0-21swapper/621:42:0928
169509913030,65cyclictest0-21swapper/1723:24:099
169509913026,65cyclictest0-21swapper/1723:02:149
16950991301,75cyclictest0-21swapper/1723:25:469
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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