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2026-09-17 - 01:14
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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 Wed Sep 16, 2026 12:49:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912970,289ptp4l0-21swapper/107:07:541
2533499262130,2cyclictest151rcu_preempt09:25:2012
254709922922,11cyclictest149-21ksoftirqd/2211:55:0215
254709918319,45cyclictest0-21swapper/2211:55:0115
253949916923,145cyclictest0-21swapper/1209:33:494
253949916422,101cyclictest0-21swapper/1207:15:124
253949916422,101cyclictest0-21swapper/1207:15:124
253949916322,140cyclictest0-21swapper/1211:30:014
254969915735,81cyclictest0-21swapper/2510:40:1418
254969915733,114cyclictest0-21swapper/2510:35:5818
254969915431,93cyclictest0-21swapper/2512:32:2918
254969915431,93cyclictest0-21swapper/2512:32:2818
254969915430,108cyclictest0-21swapper/2508:40:2018
254969915329,93cyclictest0-21swapper/2509:51:3618
254969915229,94cyclictest0-21swapper/2511:43:5018
253949915122,118cyclictest0-21swapper/1210:35:014
254969914928,95cyclictest0-21swapper/2509:55:2118
253949914920,95cyclictest0-21swapper/1210:45:094
254969914630,115cyclictest0-21swapper/2512:24:2818
25547991440,86cyclictest0-21swapper/3108:02:4125
25480991439,106cyclictest0-21swapper/2311:42:1216
255479914148,60cyclictest0-21swapper/3107:55:1125
255479914148,60cyclictest0-21swapper/3107:55:1025
254969914120,89cyclictest0-21swapper/2512:29:2718
25480991409,130cyclictest0-21swapper/2307:35:1816
25480991409,130cyclictest0-21swapper/2307:35:1816
25547991390,82cyclictest0-21swapper/3110:31:1525
254639913951,57cyclictest0-21swapper/2111:01:3314
25384991390,84cyclictest0-21swapper/1008:55:142
255479913849,55cyclictest0-21swapper/3109:38:5225
25547991380,80cyclictest0-21swapper/3112:15:5925
25547991380,80cyclictest0-21swapper/3112:15:5925
25526991388,108cyclictest0-21swapper/2910:25:5322
25455991380,81cyclictest0-21swapper/2011:35:0113
25455991380,79cyclictest0-21swapper/2010:47:0213
255479913728,68cyclictest0-21swapper/3109:48:3025
255479913726,66cyclictest0-21swapper/3110:10:5725
253949913722,83cyclictest0-21swapper/1209:16:414
25547991360,81cyclictest0-21swapper/3109:08:2525
25463991360,83cyclictest0-21swapper/2109:46:4414
25547991350,81cyclictest0-21swapper/3107:32:4625
25547991350,81cyclictest0-21swapper/3107:32:4525
25526991358,126cyclictest0-21swapper/2910:05:0222
253949913522,80cyclictest0-21swapper/1211:40:124
253689913516,30cyclictest0-21swapper/808:00:0130
255479913425,73cyclictest0-21swapper/3110:59:3425
25547991340,83cyclictest0-21swapper/3110:28:3525
25547991340,73cyclictest0-21swapper/3109:30:1925
25526991348,125cyclictest0-21swapper/2912:13:1822
254969913423,73cyclictest0-21swapper/2510:53:3818
254639913454,53cyclictest0-21swapper/2110:09:4214
254639913438,62cyclictest0-21swapper/2112:35:5414
254639913438,62cyclictest0-21swapper/2112:35:5414
254639913429,69cyclictest0-21swapper/2109:50:5914
255479913330,67cyclictest0-21swapper/3109:00:2425
255479913327,67cyclictest0-21swapper/3109:16:5725
25526991338,79cyclictest0-21swapper/2910:16:4722
25526991338,72cyclictest0-21swapper/2912:15:2722
25526991338,72cyclictest0-21swapper/2912:15:2722
254639913348,57cyclictest0-21swapper/2111:12:1414
254639913344,66cyclictest0-21swapper/2109:16:4814
255479913229,67cyclictest0-21swapper/3108:39:1825
255479913227,62cyclictest0-21swapper/3108:57:4325
255479913222,73cyclictest0-21swapper/3111:13:2925
255479913212,71cyclictest0-21swapper/3109:41:3325
25547991320,78cyclictest0-21swapper/3108:23:1725
25526991328,89cyclictest0-21swapper/2910:01:1722
254639913254,59cyclictest0-21swapper/2111:37:2214
254639913253,56cyclictest0-21swapper/2110:02:1414
255479913137,70cyclictest0-21swapper/3110:24:3525
25547991310,74cyclictest0-21swapper/3110:45:5825
254639913149,59cyclictest0-21swapper/2110:35:2114
254639913146,58cyclictest0-21swapper/2110:50:2014
254639913143,61cyclictest0-21swapper/2111:25:2214
254639913142,62cyclictest0-21swapper/2111:09:2014
254639913128,71cyclictest0-21swapper/2111:30:5714
254639913128,69cyclictest0-21swapper/2111:24:0014
254639913128,64cyclictest0-21swapper/2107:12:1814
254639913128,64cyclictest0-21swapper/2107:12:1814
254559913122,54cyclictest0-21swapper/2010:20:1213
253689913118,25cyclictest0-21swapper/812:05:1630
239332131124,6sleep180-21swapper/1807:06:3810
255479913030,70cyclictest0-21swapper/3110:03:4525
255479913027,65cyclictest0-21swapper/3110:15:1325
25547991300,77cyclictest0-21swapper/3109:20:4125
254639913050,56cyclictest0-21swapper/2109:55:4914
254639913031,70cyclictest0-21swapper/2109:41:2314
254639913026,61cyclictest0-21swapper/2112:07:1814
254639913024,62cyclictest0-21swapper/2107:15:1714
254639913024,62cyclictest0-21swapper/2107:15:1614
253949913023,70cyclictest0-21swapper/1211:03:594
255479912945,51cyclictest0-21swapper/3111:37:3225
255479912924,61cyclictest0-21swapper/3108:28:3825
254969912927,61cyclictest0-21swapper/2510:30:2218
254639912954,60cyclictest0-21swapper/2110:10:1414
254639912953,65cyclictest0-21swapper/2110:15:3814
254639912930,71cyclictest0-21swapper/2110:30:3314
254639912930,71cyclictest0-21swapper/2107:35:1614
254639912930,71cyclictest0-21swapper/2107:35:1514
254639912929,67cyclictest0-21swapper/2112:20:0714
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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