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2026-06-07 - 22:33
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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 rack3slot6.osadl.org (updated Sun Jun 07, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255459910416,17cyclictest0-21swapper/008:40:100
267212940,5chrt26362-21/usr/sbin/munin10:10:200
25550999249,25cyclictest26-21ksoftirqd/108:30:101
25545999066,13cyclictest0-21swapper/012:20:130
25545998969,12cyclictest14-21ksoftirqd/012:15:150
25550998852,19cyclictest26-21ksoftirqd/111:55:241
237302850,17sleep0171rcuc/010:00:340
25545998251,18cyclictest0-21swapper/008:50:120
25545998152,16cyclictest14-21ksoftirqd/008:55:130
2379928130,39sleep00-21swapper/007:05:120
25545998059,11cyclictest14-21ksoftirqd/009:45:120
25545998054,18cyclictest0-21swapper/011:45:120
25550997945,20cyclictest26-21ksoftirqd/108:40:141
25550997945,19cyclictest26-21ksoftirqd/107:15:131
25545997948,19cyclictest14-21ksoftirqd/010:05:110
25545997933,32cyclictest25540-21cyclictest08:19:170
25545997861,10cyclictest14-21ksoftirqd/009:40:120
25545997859,9cyclictest14-21ksoftirqd/009:30:110
25545997853,14cyclictest14-21ksoftirqd/010:30:100
25545997852,17cyclictest14-21ksoftirqd/010:15:140
25545997850,14cyclictest14-21ksoftirqd/010:45:120
25545997831,42cyclictest36-21kcompactd009:50:220
25550997718,13cyclictest26-21ksoftirqd/110:30:191
25545997645,18cyclictest14-21ksoftirqd/011:15:140
25545997645,18cyclictest14-21ksoftirqd/011:15:140
25545997556,11cyclictest14-21ksoftirqd/009:00:110
25545997447,15cyclictest14-21ksoftirqd/007:35:150
25545997446,18cyclictest14-21ksoftirqd/009:35:130
25545997344,16cyclictest14-21ksoftirqd/011:35:130
25545997250,10cyclictest14-21ksoftirqd/010:25:130
25545997133,32cyclictest14-21ksoftirqd/008:30:340
25550997040,19cyclictest26-21ksoftirqd/110:00:121
25545996943,16cyclictest14-21ksoftirqd/007:15:140
25545996942,16cyclictest14-21ksoftirqd/011:00:110
25545996940,23cyclictest14-21ksoftirqd/009:20:110
25545996936,18cyclictest0-21swapper/010:50:120
25545996915,49cyclictest0-21swapper/012:10:120
25545996840,18cyclictest14-21ksoftirqd/008:35:120
25545996839,10cyclictest14-21ksoftirqd/010:20:370
2456126833,20sleep10-21swapper/107:05:271
25545996741,20cyclictest14-21ksoftirqd/011:25:130
25545996740,21cyclictest14-21ksoftirqd/007:55:120
25545996739,8cyclictest14-21ksoftirqd/010:35:170
25550996621,39cyclictest26-21ksoftirqd/107:15:021
25545996639,20cyclictest14-21ksoftirqd/007:45:270
25545996638,18cyclictest14-21ksoftirqd/007:10:120
25545996538,17cyclictest14-21ksoftirqd/008:10:120
25545996537,18cyclictest14-21ksoftirqd/007:50:130
25545996536,19cyclictest14-21ksoftirqd/012:35:140
25545996528,32cyclictest14-21ksoftirqd/009:10:280
25545996437,22cyclictest14-21ksoftirqd/008:27:360
25545996338,20cyclictest14-21ksoftirqd/009:05:300
25545996338,20cyclictest14-21ksoftirqd/009:05:300
25545996237,17cyclictest14-21ksoftirqd/011:55:250
25545996222,33cyclictest31861-21aten2.4-expect07:25:270
25545996221,36cyclictest1269-21aten2.4-expect12:00:160
25545996124,31cyclictest14-21ksoftirqd/008:25:010
2555099606,46cyclictest1173-21apt-get12:00:141
25550996025,30cyclictest0-21swapper/107:35:151
25545996033,21cyclictest14-21ksoftirqd/012:29:380
25545996033,18cyclictest0-21swapper/009:15:220
25545996018,32cyclictest243-21systemd-journal10:44:140
25545996018,32cyclictest243-21systemd-journal10:44:140
25550995939,12cyclictest0-21swapper/107:20:311
25550995912,12cyclictest0-21swapper/111:20:171
25545995931,18cyclictest14-21ksoftirqd/011:50:150
25545995923,30cyclictest12318-21aten2.4-expect08:00:240
25550995831,9cyclictest26-21ksoftirqd/108:15:351
25550995823,28cyclictest26-21ksoftirqd/109:15:241
25550995811,42cyclictest0-21swapper/107:45:271
25545995841,9cyclictest14-21ksoftirqd/011:05:390
25545995840,10cyclictest14-21ksoftirqd/012:30:240
25545995839,10cyclictest14-21ksoftirqd/011:14:130
25545995839,10cyclictest14-21ksoftirqd/007:30:250
25545995835,19cyclictest14-21ksoftirqd/010:55:110
25545995835,18cyclictest14-21ksoftirqd/007:40:420
25545995835,18cyclictest14-21ksoftirqd/007:40:420
2554599583,50cyclictest29950-21awk08:50:000
25545995834,18cyclictest14-21ksoftirqd/008:05:260
25545995831,21cyclictest457-21dbus-daemon09:55:110
25550995726,21cyclictest566-21kworker/1:008:00:221
25550995725,27cyclictest0-21swapper/108:05:191
25545995740,9cyclictest14-21ksoftirqd/011:30:260
25545995740,9cyclictest14-21ksoftirqd/011:20:210
25545995740,9cyclictest14-21ksoftirqd/009:25:290
25545995736,12cyclictest14-21ksoftirqd/007:20:010
25550995630,8cyclictest151rcu_preempt09:50:261
2555099562,11cyclictest22700-21ls11:30:021
25550995619,26cyclictest26-21ksoftirqd/112:20:111
25550995612,30cyclictest26-21ksoftirqd/109:57:421
25550995611,40cyclictest0-21swapper/107:25:151
25545995640,8cyclictest14-21ksoftirqd/012:05:200
25545995639,10cyclictest14-21ksoftirqd/011:40:200
2555099556,43cyclictest0-21swapper/111:45:311
2555099555,36cyclictest151rcu_preempt09:20:211
25550995539,11cyclictest0-21swapper/110:10:301
2555099549,39cyclictest0-21swapper/110:35:341
2555099546,42cyclictest0-21swapper/112:35:191
2555099546,42cyclictest0-21swapper/110:05:191
25550995438,10cyclictest26-21ksoftirqd/109:00:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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