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2026-05-08 - 07:34
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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 May 08, 2026 00:49:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913190,309ptp4l0-21swapper/119:08:211
235259916921,140cyclictest0-21swapper/2500:15:3018
235259916921,132cyclictest0-21swapper/2523:00:0718
235259916921,132cyclictest0-21swapper/2523:00:0718
235259916921,127cyclictest0-21swapper/2523:12:0918
235259916921,127cyclictest0-21swapper/2523:12:0918
235259916721,97cyclictest0-21swapper/2523:20:5018
235259916721,97cyclictest0-21swapper/2523:20:4918
235259916621,88cyclictest0-21swapper/2500:39:0018
235259916621,106cyclictest0-21swapper/2521:37:3918
235259916521,116cyclictest13721-21taskset21:53:3518
235259916521,116cyclictest13721-21taskset21:53:3518
23427991580,132cyclictest0-21swapper/822:40:2330
23427991580,132cyclictest0-21swapper/822:40:2330
234179915712,117cyclictest0-21swapper/621:44:0628
234179915611,116cyclictest0-21swapper/600:10:2128
235259915421,76cyclictest0-21swapper/2522:53:4218
235259915421,76cyclictest0-21swapper/2522:53:4218
234179915411,91cyclictest0-21swapper/620:55:1528
235259915210,116cyclictest151rcu_preempt00:01:0318
234179915112,111cyclictest0-21swapper/621:10:1528
234689915031,72cyclictest0-21swapper/1722:44:299
234689915031,72cyclictest0-21swapper/1722:44:299
234689914828,25cyclictest0-21swapper/1722:50:089
234689914828,25cyclictest0-21swapper/1722:50:079
234689914627,82cyclictest0-21swapper/1723:22:279
234689914627,82cyclictest0-21swapper/1723:22:269
234469914652,93cyclictest0-21swapper/1320:15:155
23412991460,86cyclictest0-21swapper/521:32:4127
23403991461,86cyclictest0-21swapper/322:51:4523
23403991461,86cyclictest0-21swapper/322:51:4423
234179914511,81cyclictest0-21swapper/621:25:4528
23387991450,84cyclictest0-21swapper/022:30:340
23387991450,84cyclictest0-21swapper/022:30:340
234179914411,98cyclictest0-21swapper/621:46:3528
233879914452,48cyclictest0-21swapper/022:10:210
233879914452,48cyclictest0-21swapper/022:10:210
233879914449,49cyclictest0-21swapper/021:50:300
233879914449,49cyclictest0-21swapper/021:50:290
235259914322,120cyclictest0-21swapper/2521:55:1418
234039914316,102cyclictest34-21ksoftirqd/321:48:0823
235259914220,89cyclictest0-21swapper/2521:28:4318
235669914060,27cyclictest151rcu_preempt20:40:1224
234179914011,76cyclictest0-21swapper/622:45:2228
234179914011,76cyclictest0-21swapper/622:45:2228
234129913922,112cyclictest0-21swapper/523:09:0927
234129913922,112cyclictest0-21swapper/523:09:0827
23398991390,84cyclictest0-21swapper/221:44:5412
235259913820,90cyclictest0-21swapper/2522:55:1918
235259913820,90cyclictest0-21swapper/2522:55:1818
235729913750,55cyclictest0-21swapper/3122:00:5325
235729913729,69cyclictest0-21swapper/3123:06:0625
235729913729,69cyclictest0-21swapper/3123:06:0625
235729913729,64cyclictest0-21swapper/3121:54:3025
235729913729,64cyclictest0-21swapper/3121:54:2925
235259913721,73cyclictest0-21swapper/2521:15:2318
234039913727,64cyclictest0-21swapper/322:33:0223
234039913727,64cyclictest0-21swapper/322:33:0223
234039913726,64cyclictest0-21swapper/320:06:0423
235729913631,65cyclictest0-21swapper/3100:39:3825
235729913630,65cyclictest0-21swapper/3122:45:1625
235729913630,65cyclictest0-21swapper/3122:45:1525
235729913628,63cyclictest0-21swapper/3121:08:4825
234129913623,112cyclictest0-21swapper/521:54:3527
234129913623,112cyclictest0-21swapper/521:54:3527
234039913628,63cyclictest0-21swapper/300:32:1323
235729913540,64cyclictest0-21swapper/3119:49:2625
235729913532,65cyclictest0-21swapper/3100:30:0225
235729913529,64cyclictest0-21swapper/3121:33:3825
234039913571,59cyclictest0-21swapper/300:27:5623
234039913527,67cyclictest0-21swapper/321:16:0423
23398991350,80cyclictest0-21swapper/223:18:0912
23398991350,80cyclictest0-21swapper/223:18:0812
235729913430,67cyclictest0-21swapper/3123:50:2725
235729913430,62cyclictest0-21swapper/3122:15:2025
235729913430,62cyclictest0-21swapper/3122:15:1925
235729913429,62cyclictest0-21swapper/3122:12:4025
235729913429,62cyclictest0-21swapper/3122:12:3925
235729913429,61cyclictest0-21swapper/3123:40:1825
235729913429,61cyclictest0-21swapper/3123:40:1825
235729913428,63cyclictest0-21swapper/3120:40:1325
235729913424,65cyclictest0-21swapper/3121:35:1425
23566991340,81cyclictest0-21swapper/3022:00:2024
23525991340,83cyclictest0-21swapper/2523:43:5818
23525991340,83cyclictest0-21swapper/2523:43:5718
234689913417,75cyclictest0-21swapper/1721:17:589
234129913450,58cyclictest0-21swapper/500:33:1927
234039913427,67cyclictest0-21swapper/321:35:1823
234039913427,62cyclictest0-21swapper/323:46:1523
234039913420,87cyclictest0-21swapper/319:12:0723
23398991340,84cyclictest0-21swapper/223:03:4712
23398991340,84cyclictest0-21swapper/223:03:4612
233879913445,53cyclictest0-21swapper/020:35:120
235729913330,69cyclictest0-21swapper/3120:15:0525
235339913355,57cyclictest0-21swapper/2623:17:1519
235339913355,57cyclictest0-21swapper/2623:17:1419
235339913329,68cyclictest0-21swapper/2621:19:0819
23403991333,79cyclictest0-21swapper/320:55:1323
234039913329,66cyclictest0-21swapper/300:16:1123
235729913231,59cyclictest0-21swapper/3121:01:3425
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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