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2026-04-21 - 04:41
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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
Characteristics of the 100 highest latencies:
System rackdslot4.osadl.org (updated Tue Apr 21, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1291222120,6sleep10-21swapper/119:05:281
130732206173,22sleep00-21swapper/019:06:270
138591205170,23phc2sys0-21swapper/319:06:233
131382200167,22sleep20-21swapper/219:07:152
2234621480,4sleep21364399cyclictest19:25:232
1268521410,5sleep21364399cyclictest21:15:282
1673021270,2sleep30-21swapper/321:25:193
138491650,1ptp4l401ktimersoftd/321:43:433
215522630,5sleep341-21ksoftirqd/319:25:173
138491610,0ptp4l401ktimersoftd/320:37:313
162822560,2sleep116284-21cstates20:20:141
138491560,1ptp4l401ktimersoftd/321:49:383
13642995625,4cyclictest25-21ksoftirqd/122:00:141
138491520,1ptp4l391rcuc/300:25:343
13642995221,4cyclictest25-21ksoftirqd/120:25:181
13642995220,4cyclictest25-21ksoftirqd/121:35:261
13643995144,4cyclictest10601-21sh21:14:592
13642995123,5cyclictest25-21ksoftirqd/120:00:161
13642995119,4cyclictest25-21ksoftirqd/122:20:001
13642994915,4cyclictest25-21ksoftirqd/122:30:221
1364299489,4cyclictest25-21ksoftirqd/121:25:001
13642994822,6cyclictest25-21ksoftirqd/122:35:261
13642994818,7cyclictest25-21ksoftirqd/120:45:141
13642994817,3cyclictest25-21ksoftirqd/100:25:251
13642994815,4cyclictest25-21ksoftirqd/119:30:131
13642994811,4cyclictest25-21ksoftirqd/119:45:001
13642994718,8cyclictest25-21ksoftirqd/123:50:271
13642994718,7cyclictest25-21ksoftirqd/123:55:121
13642994717,4cyclictest25-21ksoftirqd/120:40:171
13642994716,4cyclictest25-21ksoftirqd/123:00:181
13642994716,3cyclictest25-21ksoftirqd/121:15:141
13642994715,8cyclictest25-21ksoftirqd/123:25:211
13642994715,4cyclictest25-21ksoftirqd/121:45:131
13642994616,8cyclictest25-21ksoftirqd/123:05:281
13642994616,3cyclictest25-21ksoftirqd/100:10:141
13642994615,8cyclictest25-21ksoftirqd/121:55:131
13642994614,4cyclictest25-21ksoftirqd/119:30:011
13641994640,3cyclictest223-21systemd-journal22:20:010
123842460,2sleep00-21swapper/023:25:270
138491450,0ptp4l401ktimersoftd/321:56:253
13642994516,7cyclictest25-21ksoftirqd/121:25:211
13642994515,4cyclictest25-21ksoftirqd/100:35:191
13642994513,4cyclictest25-21ksoftirqd/119:35:231
13642994512,8cyclictest25-21ksoftirqd/123:45:121
13642994512,5cyclictest25-21ksoftirqd/119:55:161
13642994512,4cyclictest25-21ksoftirqd/121:45:011
1364299446,5cyclictest25-21ksoftirqd/120:05:241
13642994419,6cyclictest25-21ksoftirqd/123:15:151
13642994419,6cyclictest25-21ksoftirqd/123:15:151
13642994417,6cyclictest25-21ksoftirqd/121:30:131
13642994416,7cyclictest25-21ksoftirqd/119:15:241
13642994411,8cyclictest25-21ksoftirqd/123:10:261
13642994411,5cyclictest25-21ksoftirqd/120:55:191
13642994410,7cyclictest25-21ksoftirqd/122:25:001
138491430,0ptp4l401ktimersoftd/322:40:273
1364299437,4cyclictest25-21ksoftirqd/122:05:141
13642994316,6cyclictest25-21ksoftirqd/120:10:121
13642994311,3cyclictest25-21ksoftirqd/119:20:281
13642994310,7cyclictest25-21ksoftirqd/120:15:121
138491420,0ptp4l401ktimersoftd/323:52:193
1364299429,4cyclictest25-21ksoftirqd/122:25:151
13642994215,3cyclictest25-21ksoftirqd/121:05:141
13642994214,7cyclictest25-21ksoftirqd/121:50:131
13642994214,7cyclictest25-21ksoftirqd/100:05:241
13642994211,4cyclictest25-21ksoftirqd/122:55:231
13642994210,7cyclictest25-21ksoftirqd/123:30:261
1364299419,4cyclictest25-21ksoftirqd/123:20:131
1364299415,7cyclictest25-21ksoftirqd/122:45:211
1364299413,7cyclictest25-21ksoftirqd/122:10:241
13642994112,3cyclictest25-21ksoftirqd/119:50:201
13641994135,4cyclictest8126-21cron21:09:590
13642994035,3cyclictest25-21ksoftirqd/100:25:001
13642994034,3cyclictest25-21ksoftirqd/120:39:591
13642994029,9cyclictest25-21ksoftirqd/120:30:161
13642994011,3cyclictest25-21ksoftirqd/123:44:461
1364299398,3cyclictest25-21ksoftirqd/122:50:181
13642993935,2cyclictest25-21ksoftirqd/100:04:591
13642993915,7cyclictest25-21ksoftirqd/100:15:191
13642993915,7cyclictest25-21ksoftirqd/100:15:181
13643993832,4cyclictest33-21ksoftirqd/200:20:392
1364299389,3cyclictest25-21ksoftirqd/119:45:111
1364299384,2cyclictest121rcu_preempt23:35:191
13642993833,3cyclictest25-21ksoftirqd/121:00:131
13641993833,3cyclictest9-21ksoftirqd/020:09:590
1364499373,3cyclictest121rcu_preempt19:23:593
13644993713,3cyclictest6621-21sed22:10:183
13644993712,4cyclictest26917-21which23:55:233
13643993731,4cyclictest33-21ksoftirqd/220:47:162
13643993731,4cyclictest33-21ksoftirqd/219:12:202
13643993730,5cyclictest33-21ksoftirqd/222:06:182
13643993730,4cyclictest33-21ksoftirqd/221:30:072
1364299371,3cyclictest121rcu_preempt20:50:131
1364299370,3cyclictest121rcu_preempt19:10:271
13644993630,4cyclictest41-21ksoftirqd/320:46:473
13644993630,4cyclictest41-21ksoftirqd/319:34:553
13644993630,4cyclictest41-21ksoftirqd/319:18:503
13643993631,3cyclictest33-21ksoftirqd/221:09:592
13643993630,4cyclictest33-21ksoftirqd/223:28:022
13643993630,4cyclictest33-21ksoftirqd/219:32:172
13643993630,3cyclictest33-21ksoftirqd/200:00:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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