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2026-09-08 - 13:35
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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 Sep 08, 2026 00:49:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913410,326ptp4l0-21swapper/119:05:171
3273913410,326ptp4l0-21swapper/119:05:171
45819927274,1cyclictest151rcu_preempt22:38:0719
450999220119,1cyclictest151rcu_preempt21:17:299
30952163156,6sleep00-21swapper/019:08:420
30952163156,6sleep00-21swapper/019:08:420
45889916265,60cyclictest0-21swapper/2720:55:1320
43779916250,82cyclictest0-21swapper/020:55:220
45819915911,63cyclictest0-21swapper/2600:35:2419
44429915931,116cyclictest0-21swapper/821:22:1130
44429915728,96cyclictest0-21swapper/823:24:0430
45889915553,61cyclictest0-21swapper/2722:41:0220
44429914729,77cyclictest0-21swapper/822:42:2730
45889914435,80cyclictest0-21swapper/2720:40:1620
44429914287,55cyclictest0-21swapper/823:45:1130
44429914287,55cyclictest0-21swapper/823:45:1130
4442991420,85cyclictest0-21swapper/821:46:1630
43779914051,58cyclictest0-21swapper/021:32:040
43779914031,70cyclictest0-21swapper/020:30:140
44429913941,56cyclictest0-21swapper/820:07:2930
44429913931,71cyclictest0-21swapper/822:14:4030
43779913943,61cyclictest0-21swapper/021:29:010
43779913848,57cyclictest0-21swapper/019:27:560
45889913727,77cyclictest0-21swapper/2723:25:2420
45889913727,77cyclictest0-21swapper/2723:25:2420
4442991370,81cyclictest0-21swapper/822:35:1030
4408991370,85cyclictest0-21swapper/419:25:2426
43779913750,63cyclictest0-21swapper/022:38:310
43779913727,70cyclictest0-21swapper/022:00:520
4442991360,87cyclictest0-21swapper/823:35:1830
4442991360,87cyclictest0-21swapper/823:35:1830
43779913650,55cyclictest0-21swapper/023:04:260
43779913625,69cyclictest0-21swapper/000:21:240
43779913625,69cyclictest0-21swapper/000:21:240
45889913526,80cyclictest0-21swapper/2700:15:2320
45889913526,80cyclictest0-21swapper/2700:15:2320
45259913543,57cyclictest0-21swapper/1921:42:3911
43879913519,77cyclictest0-21swapper/222:14:0912
43779913539,64cyclictest0-21swapper/020:20:210
44429913439,61cyclictest0-21swapper/820:48:0030
44429913425,62cyclictest0-21swapper/821:30:1230
43879913430,75cyclictest0-21swapper/200:25:2312
43879913430,75cyclictest0-21swapper/200:25:2212
43879913427,66cyclictest0-21swapper/223:26:2412
43879913427,66cyclictest0-21swapper/223:26:2412
43779913440,60cyclictest0-21swapper/021:44:160
43779913437,63cyclictest0-21swapper/000:00:000
43779913437,63cyclictest0-21swapper/000:00:000
43779913430,75cyclictest0-21swapper/019:10:250
43779913430,70cyclictest0-21swapper/019:53:350
43779913427,64cyclictest0-21swapper/021:10:070
43779913425,65cyclictest0-21swapper/022:22:450
44429913340,64cyclictest0-21swapper/822:16:4830
43879913324,72cyclictest0-21swapper/221:20:1012
43779913331,74cyclictest0-21swapper/021:22:530
43779913330,73cyclictest0-21swapper/019:15:230
43779913330,68cyclictest0-21swapper/022:59:440
43779913329,68cyclictest0-21swapper/021:51:430
43779913329,68cyclictest0-21swapper/000:29:260
43779913329,68cyclictest0-21swapper/000:29:260
43779913328,72cyclictest0-21swapper/000:35:020
45519913217,45cyclictest0-21swapper/2200:12:2115
45519913217,45cyclictest0-21swapper/2200:12:2115
45259913228,69cyclictest0-21swapper/1922:25:2411
44429913236,56cyclictest0-21swapper/821:11:1630
44429913222,63cyclictest0-21swapper/822:23:2630
43879913228,72cyclictest0-21swapper/200:03:2712
43879913228,72cyclictest0-21swapper/200:03:2712
43879913228,69cyclictest0-21swapper/221:36:2512
43879913226,71cyclictest0-21swapper/221:41:0112
43879913220,73cyclictest0-21swapper/221:34:0312
43779913229,70cyclictest0-21swapper/023:40:170
43779913229,70cyclictest0-21swapper/023:40:170
43779913229,66cyclictest0-21swapper/021:37:190
43779913228,71cyclictest0-21swapper/022:27:290
43779913228,68cyclictest0-21swapper/019:41:490
43779913227,70cyclictest0-21swapper/023:17:150
43779913225,66cyclictest0-21swapper/021:17:070
45999913141,55cyclictest0-21swapper/2823:42:5121
45999913141,55cyclictest0-21swapper/2823:42:5021
45749913156,74cyclictest0-21swapper/2520:31:0818
4558991310,76cyclictest0-21swapper/2322:55:2416
45259913128,70cyclictest0-21swapper/1922:04:3211
45259913128,69cyclictest0-21swapper/1923:45:0211
45259913128,69cyclictest0-21swapper/1923:45:0211
45259913127,70cyclictest0-21swapper/1923:40:4311
45259913127,70cyclictest0-21swapper/1923:40:4311
45259913127,68cyclictest0-21swapper/1922:49:5911
45259913126,65cyclictest0-21swapper/1920:50:1611
44429913152,60cyclictest0-21swapper/820:28:1530
44429913152,55cyclictest0-21swapper/823:51:3630
44429913152,55cyclictest0-21swapper/823:51:3530
44429913141,64cyclictest0-21swapper/800:37:0230
44429913128,63cyclictest0-21swapper/823:02:1530
44429913127,62cyclictest0-21swapper/822:33:3530
43879913146,55cyclictest0-21swapper/221:14:2312
43879913131,68cyclictest0-21swapper/223:07:3612
43879913130,73cyclictest0-21swapper/223:43:2312
43879913130,73cyclictest0-21swapper/223:43:2312
43879913130,71cyclictest0-21swapper/200:08:4812
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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