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2026-07-17 - 11:49
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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 Jul 17, 2026 00:49:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912680,259ptp4l0-21swapper/119:08:211
786699205128,23cyclictest151rcu_preempt00:31:073
330891191183,6phc2sys0-21swapper/219:06:5512
78999918717,136cyclictest0-21swapper/1522:35:137
79169917350,87cyclictest0-21swapper/1823:22:1810
79129917361,2cyclictest151rcu_preempt23:52:449
78999916717,94cyclictest0-21swapper/1523:55:207
79269916517,106cyclictest151rcu_preempt00:38:0513
79169916440,96cyclictest0-21swapper/1823:25:2810
79169915933,96cyclictest0-21swapper/1823:45:4910
79169915733,123cyclictest0-21swapper/1823:30:1810
79169915725,116cyclictest0-21swapper/1800:15:1310
79169915725,116cyclictest0-21swapper/1800:15:1210
79309915532,95cyclictest0-21swapper/2123:31:2614
79169915529,82cyclictest0-21swapper/1800:22:2410
79309915431,96cyclictest0-21swapper/2121:45:3614
79309915431,96cyclictest0-21swapper/2121:45:3514
79309915331,103cyclictest0-21swapper/2119:35:1214
79269915381,34cyclictest151rcu_preempt00:05:2513
79309915229,90cyclictest0-21swapper/2121:25:0214
79309915229,90cyclictest0-21swapper/2121:25:0114
79169915226,82cyclictest0-21swapper/1823:10:5710
79269914734,107cyclictest151rcu_preempt23:08:1413
79269914617,106cyclictest0-21swapper/2000:20:2513
7912991467,55cyclictest0-21swapper/1700:08:469
79309914530,60cyclictest0-21swapper/2122:35:1914
79269914510,131cyclictest151rcu_preempt23:17:5213
7916991420,84cyclictest0-21swapper/1819:47:2710
79269914115,103cyclictest0-21swapper/2019:15:1413
79269914013,124cyclictest151rcu_preempt00:33:4513
78579914043,61cyclictest0-21swapper/1021:26:112
78579914041,61cyclictest0-21swapper/1019:55:042
79169913911,73cyclictest0-21swapper/1820:31:0610
79169913911,73cyclictest0-21swapper/1820:31:0510
78999913917,92cyclictest0-21swapper/1500:10:207
78579913951,64cyclictest0-21swapper/1000:04:562
78579913941,60cyclictest0-21swapper/1000:18:162
78579913941,60cyclictest0-21swapper/1000:18:162
79309913825,74cyclictest0-21swapper/2119:27:4314
78999913850,57cyclictest0-21swapper/1522:54:587
78579913857,63cyclictest0-21swapper/1000:32:422
78579913853,64cyclictest0-21swapper/1021:35:162
78579913853,64cyclictest0-21swapper/1021:35:162
78579913853,61cyclictest0-21swapper/1023:53:082
78999913747,58cyclictest0-21swapper/1521:15:027
78999913747,58cyclictest0-21swapper/1521:15:017
78999913723,72cyclictest0-21swapper/1521:29:177
78999913720,71cyclictest0-21swapper/1523:32:557
7926991365,95cyclictest0-21swapper/2023:58:0413
78999913650,62cyclictest0-21swapper/1523:25:597
78999913645,59cyclictest0-21swapper/1523:40:247
78999913549,55cyclictest0-21swapper/1521:32:417
78999913549,55cyclictest0-21swapper/1521:32:407
78999913517,77cyclictest0-21swapper/1521:12:217
78999913517,77cyclictest0-21swapper/1521:12:217
79309913327,66cyclictest0-21swapper/2100:14:1114
78999913353,58cyclictest0-21swapper/1500:27:267
78579913339,57cyclictest0-21swapper/1021:12:482
78579913339,57cyclictest0-21swapper/1021:12:482
78579913333,63cyclictest0-21swapper/1021:53:572
78579913330,65cyclictest0-21swapper/1022:34:042
79309913253,69cyclictest0-21swapper/2121:29:3314
79309913233,49cyclictest0-21swapper/2122:31:0114
79309913227,69cyclictest0-21swapper/2120:40:2414
79309913227,69cyclictest0-21swapper/2120:40:2314
78999913240,67cyclictest0-21swapper/1500:33:207
78999913232,76cyclictest0-21swapper/1520:20:237
78999913229,67cyclictest0-21swapper/1522:40:177
78579913234,58cyclictest0-21swapper/1022:45:172
79309913144,59cyclictest0-21swapper/2123:13:1614
79309913130,72cyclictest0-21swapper/2100:27:1614
79309913130,66cyclictest0-21swapper/2100:06:4214
79309913128,72cyclictest0-21swapper/2123:28:1114
79309913128,65cyclictest0-21swapper/2120:10:2914
79309913128,65cyclictest0-21swapper/2119:10:0514
79169913148,54cyclictest0-21swapper/1823:53:5010
78999913136,64cyclictest0-21swapper/1522:05:177
7899991310,78cyclictest0-21swapper/1521:39:067
7899991310,78cyclictest0-21swapper/1521:39:067
7876991310,80cyclictest0-21swapper/1223:51:244
7876991310,78cyclictest0-21swapper/1219:47:574
78579913129,62cyclictest0-21swapper/1020:40:452
78579913129,62cyclictest0-21swapper/1020:40:442
78579913127,62cyclictest0-21swapper/1021:56:062
79309913030,73cyclictest0-21swapper/2122:02:1014
79309913030,68cyclictest0-21swapper/2100:36:0714
79309913030,64cyclictest0-21swapper/2123:37:1814
79309913024,62cyclictest0-21swapper/2123:40:3014
78999913052,64cyclictest0-21swapper/1500:15:097
78999913052,64cyclictest0-21swapper/1500:15:087
78999913043,57cyclictest0-21swapper/1521:21:597
78999913043,57cyclictest0-21swapper/1521:21:587
78999913033,77cyclictest0-21swapper/1523:05:267
78999913031,78cyclictest0-21swapper/1522:14:527
78999913029,66cyclictest0-21swapper/1520:20:017
78999913028,68cyclictest0-21swapper/1500:08:127
78999913026,65cyclictest0-21swapper/1523:00:197
78579913027,62cyclictest0-21swapper/1023:26:592
7803991300,79cyclictest0-21swapper/020:00:470
79309912932,74cyclictest0-21swapper/2120:35:3614
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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