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2026-09-22 - 10:37
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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 rackdslot3.osadl.org (updated Tue Sep 22, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491224161,51phc2sys0-21swapper/319:08:113
243812204170,22sleep10-21swapper/119:09:561
242632203169,23sleep20-21swapper/219:08:242
242612201168,22sleep00-21swapper/019:08:220
2475821800,6sleep02468199cyclictest23:40:010
1394918564,11phc2sys0-21swapper/319:10:003
2438828263,11sleep20-21swapper/219:10:012
24684996218,10cyclictest41-21ksoftirqd/320:55:003
24684995717,4cyclictest41-21ksoftirqd/322:15:263
24683995626,4cyclictest33-21ksoftirqd/223:55:172
24683995625,3cyclictest33-21ksoftirqd/220:45:272
24683995425,4cyclictest33-21ksoftirqd/221:05:192
24683995425,4cyclictest33-21ksoftirqd/221:05:192
24683995424,3cyclictest33-21ksoftirqd/221:20:002
24683995424,3cyclictest33-21ksoftirqd/200:10:002
24683995422,5cyclictest33-21ksoftirqd/221:55:172
24683995422,3cyclictest33-21ksoftirqd/221:40:162
24683995328,7cyclictest33-21ksoftirqd/221:45:132
24683995320,4cyclictest33-21ksoftirqd/219:35:152
139391530,1ptp4l401ktimersoftd/300:01:143
139391530,1ptp4l401ktimersoftd/300:01:133
2468499528,11cyclictest41-21ksoftirqd/321:10:173
24684995220,10cyclictest41-21ksoftirqd/323:20:143
24683995122,4cyclictest33-21ksoftirqd/223:40:232
24683995120,3cyclictest33-21ksoftirqd/223:15:012
24684995020,7cyclictest41-21ksoftirqd/322:55:143
24683995020,3cyclictest33-21ksoftirqd/223:35:022
24684994919,4cyclictest41-21ksoftirqd/322:45:233
24684994919,3cyclictest41-21ksoftirqd/321:05:203
24684994919,3cyclictest41-21ksoftirqd/321:05:203
24683994919,3cyclictest33-21ksoftirqd/222:55:162
24683994919,3cyclictest33-21ksoftirqd/220:40:222
24683994918,3cyclictest33-21ksoftirqd/221:25:192
24683994918,3cyclictest33-21ksoftirqd/200:15:202
164202490,2sleep00-21swapper/023:20:230
24683994818,3cyclictest33-21ksoftirqd/223:15:242
24684994717,3cyclictest41-21ksoftirqd/321:20:203
24683994720,4cyclictest33-21ksoftirqd/200:23:462
24683994719,3cyclictest33-21ksoftirqd/222:55:002
24683994718,3cyclictest33-21ksoftirqd/223:25:222
24683994718,3cyclictest33-21ksoftirqd/221:10:222
24683994715,2cyclictest33-21ksoftirqd/222:45:202
24684994634,4cyclictest41-21ksoftirqd/320:30:283
24684994627,7cyclictest41-21ksoftirqd/322:04:593
24683994619,4cyclictest33-21ksoftirqd/220:30:212
24683994618,3cyclictest33-21ksoftirqd/219:55:172
24683994615,3cyclictest33-21ksoftirqd/223:35:252
24683994614,4cyclictest33-21ksoftirqd/220:00:182
24684994538,3cyclictest15332-21sh21:05:003
2468499451,3cyclictest121rcu_preempt19:45:243
24684994512,2cyclictest121rcu_preempt00:15:283
24684994510,5cyclictest41-21ksoftirqd/320:15:273
24683994521,3cyclictest33-21ksoftirqd/221:05:012
2468499449,4cyclictest41-21ksoftirqd/321:35:253
24684994412,8cyclictest41-21ksoftirqd/321:19:263
24683994418,4cyclictest33-21ksoftirqd/222:15:162
24683994415,3cyclictest33-21ksoftirqd/222:35:242
24683994414,3cyclictest33-21ksoftirqd/219:15:252
24683994414,3cyclictest33-21ksoftirqd/219:15:252
2468399441,3cyclictest121rcu_preempt19:50:152
24683994411,3cyclictest33-21ksoftirqd/220:10:262
139391440,0ptp4l401ktimersoftd/319:30:023
2468499433,3cyclictest121rcu_preempt19:25:273
24683994315,3cyclictest33-21ksoftirqd/222:40:232
24683994313,3cyclictest33-21ksoftirqd/220:25:192
139391430,0ptp4l401ktimersoftd/300:35:133
2468499424,3cyclictest121rcu_preempt23:34:433
2468499423,9cyclictest41-21ksoftirqd/323:50:233
24684994226,4cyclictest41-21ksoftirqd/323:05:183
24683994215,3cyclictest33-21ksoftirqd/223:20:182
24683994213,4cyclictest33-21ksoftirqd/221:50:122
24683994210,3cyclictest33-21ksoftirqd/221:35:002
2468399420,4cyclictest5576-21/usr/sbin/munin23:00:212
139391420,0ptp4l401ktimersoftd/300:32:393
2468499418,6cyclictest41-21ksoftirqd/300:20:173
2468499415,3cyclictest121rcu_preempt00:06:123
24684994125,4cyclictest41-21ksoftirqd/323:05:003
24683994136,3cyclictest33-21ksoftirqd/200:35:002
2468399413,3cyclictest121rcu_preempt19:30:012
24683994110,4cyclictest33-21ksoftirqd/200:35:222
2468199411,3cyclictest121rcu_preempt19:45:170
57898400,5rtkit-daemon15444-21find00:25:251
2468499409,9cyclictest41-21ksoftirqd/320:40:143
2468499406,4cyclictest121rcu_preempt20:36:513
2468499406,3cyclictest121rcu_preempt19:22:383
24684994036,2cyclictest41-21ksoftirqd/300:00:013
2468499403,3cyclictest121rcu_preempt23:15:003
2468499401,2cyclictest121rcu_preempt23:41:333
2468399408,3cyclictest33-21ksoftirqd/219:45:202
24683994026,3cyclictest33-21ksoftirqd/200:25:172
24683994024,3cyclictest33-21ksoftirqd/219:45:002
24683994014,4cyclictest33-21ksoftirqd/200:10:282
2468399400,3cyclictest121rcu_preempt23:45:142
299502390,25sleep233-21ksoftirqd/219:20:142
2468499396,9cyclictest41-21ksoftirqd/320:55:123
2468499395,3cyclictest41-21ksoftirqd/322:27:563
2468499395,2cyclictest121rcu_preempt19:51:033
24684993934,3cyclictest41-21ksoftirqd/320:05:003
2468499393,3cyclictest121rcu_preempt22:10:243
24684993933,3cyclictest41-21ksoftirqd/320:15:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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