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2026-09-11 - 14:58
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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 Fri Sep 11, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
144532206173,21sleep20-21swapper/219:09:562
138591204170,22phc2sys0-21swapper/319:06:043
144252203168,23sleep00-21swapper/019:09:330
141332199167,21sleep10-21swapper/119:05:541
1384911080,87ptp4l0-21swapper/319:10:003
138491560,1ptp4l401ktimersoftd/320:55:593
14753995524,4cyclictest41-21ksoftirqd/321:01:423
153872540,2sleep20-21swapper/221:20:172
14753995327,6cyclictest41-21ksoftirqd/323:50:283
138491530,1ptp4l401ktimersoftd/322:20:153
138491530,1ptp4l401ktimersoftd/319:37:013
14753994820,7cyclictest41-21ksoftirqd/322:10:263
14753994817,4cyclictest41-21ksoftirqd/323:10:013
14752994818,27cyclictest32413-21apt-get20:50:132
1475399478,4cyclictest41-21ksoftirqd/320:20:233
14753994730,15cyclictest41-21ksoftirqd/320:30:003
14753994716,4cyclictest41-21ksoftirqd/323:15:113
1475299470,2cyclictest0-21swapper/219:17:442
1475399469,10cyclictest41-21ksoftirqd/300:15:003
1475399465,7cyclictest41-21ksoftirqd/320:10:243
1475399463,5cyclictest121rcu_preempt21:40:183
14753994539,3cyclictest29709-21cron20:45:003
14753994539,3cyclictest29709-21cron20:45:003
1475399453,8cyclictest41-21ksoftirqd/323:25:263
14753994515,4cyclictest41-21ksoftirqd/323:10:143
138491450,0ptp4l401ktimersoftd/322:51:583
1475399448,8cyclictest41-21ksoftirqd/319:15:233
14753994415,7cyclictest41-21ksoftirqd/322:40:243
14753994414,7cyclictest41-21ksoftirqd/320:20:003
1475199443,4cyclictest25-21ksoftirqd/120:25:261
14751994411,7cyclictest25-21ksoftirqd/121:10:001
1475399433,7cyclictest41-21ksoftirqd/321:45:133
14753994314,3cyclictest41-21ksoftirqd/322:05:283
14753994313,4cyclictest41-21ksoftirqd/323:55:283
14753994311,4cyclictest41-21ksoftirqd/320:00:243
14753994311,4cyclictest41-21ksoftirqd/320:00:243
14753994311,4cyclictest41-21ksoftirqd/319:25:113
14753994310,7cyclictest41-21ksoftirqd/319:20:173
14751994337,3cyclictest25-21ksoftirqd/121:35:001
14751994313,7cyclictest25-21ksoftirqd/122:10:241
14751994311,5cyclictest25-21ksoftirqd/121:50:001
138491430,0ptp4l401ktimersoftd/321:17:263
1475399429,7cyclictest41-21ksoftirqd/322:25:203
1475399429,7cyclictest41-21ksoftirqd/322:25:203
1475399429,3cyclictest41-21ksoftirqd/319:30:263
1475399429,3cyclictest41-21ksoftirqd/319:30:263
1475399429,11cyclictest41-21ksoftirqd/323:20:153
14753994216,6cyclictest41-21ksoftirqd/319:45:233
1475399421,4cyclictest121rcu_preempt23:45:203
1475199427,5cyclictest25-21ksoftirqd/122:00:141
14751994236,3cyclictest25-21ksoftirqd/123:00:011
1475199422,3cyclictest121rcu_preempt19:35:181
14751994222,5cyclictest25-21ksoftirqd/120:20:171
138491420,0ptp4l401ktimersoftd/300:00:203
1475399414,7cyclictest41-21ksoftirqd/322:00:203
14753994135,3cyclictest41-21ksoftirqd/321:10:003
14753994114,3cyclictest41-21ksoftirqd/321:50:153
14753994112,6cyclictest41-21ksoftirqd/323:35:143
14753994112,6cyclictest41-21ksoftirqd/323:35:143
14753994111,3cyclictest41-21ksoftirqd/319:51:103
1475199416,3cyclictest25-21ksoftirqd/120:35:221
1475199414,6cyclictest25-21ksoftirqd/121:55:161
1475199412,6cyclictest25-21ksoftirqd/119:30:191
1475199412,6cyclictest25-21ksoftirqd/119:30:191
14751994112,8cyclictest25-21ksoftirqd/122:35:281
14753994035,3cyclictest41-21ksoftirqd/319:40:213
14753994034,3cyclictest41-21ksoftirqd/321:15:003
14753994011,4cyclictest41-21ksoftirqd/321:30:143
14753994010,4cyclictest41-21ksoftirqd/320:35:133
1475399400,3cyclictest121rcu_preempt20:30:143
1475399400,2cyclictest41-21ksoftirqd/300:30:183
1475399400,2cyclictest41-21ksoftirqd/300:30:183
14752994012,26cyclictest0-21swapper/222:47:532
1475199406,8cyclictest25-21ksoftirqd/121:25:001
1475199406,7cyclictest25-21ksoftirqd/119:25:221
1475199404,2cyclictest121rcu_preempt00:10:161
1475199403,3cyclictest25-21ksoftirqd/123:55:251
14750994034,3cyclictest9-21ksoftirqd/020:35:000
14753993933,3cyclictest41-21ksoftirqd/320:50:003
14753993927,3cyclictest41-21ksoftirqd/322:15:173
14753993912,3cyclictest41-21ksoftirqd/321:55:213
1475199399,7cyclictest25-21ksoftirqd/121:10:201
1475199398,8cyclictest25-21ksoftirqd/122:30:251
1475199398,8cyclictest25-21ksoftirqd/121:40:221
1475199396,4cyclictest25-21ksoftirqd/100:35:151
1475199395,3cyclictest25-21ksoftirqd/121:35:271
1475199395,2cyclictest25-21ksoftirqd/119:20:171
1475199394,2cyclictest121rcu_preempt23:45:121
1475199393,3cyclictest121rcu_preempt22:05:221
1475199391,7cyclictest25-21ksoftirqd/122:45:181
1475099393,3cyclictest121rcu_preempt21:45:240
1475399384,7cyclictest41-21ksoftirqd/321:35:153
1475399383,9cyclictest41-21ksoftirqd/322:30:133
14753993834,2cyclictest41-21ksoftirqd/320:55:003
14753993833,3cyclictest41-21ksoftirqd/300:05:123
14753993832,3cyclictest41-21ksoftirqd/321:20:153
14753993812,7cyclictest41-21ksoftirqd/321:25:133
14753993812,7cyclictest41-21ksoftirqd/321:25:133
14753993810,4cyclictest41-21ksoftirqd/323:30:303
14752993832,3cyclictest33-21ksoftirqd/221:15:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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