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2025-11-18 - 05:14
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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
Characteristics of the 100 highest latencies:
System rackdslot4.osadl.org (updated Tue Nov 18, 2025 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
427791205172,22phc2sys0-21swapper/319:07:253
176522203169,23sleep00-21swapper/019:09:330
176462203169,22sleep10-21swapper/119:09:301
175642202168,22sleep20-21swapper/219:08:262
36998960,19rtkit-daemon4093-21cut20:50:190
19612850,3sleep11965-21needreboot21:50:231
427291720,1ptp4l401ktimersoftd/319:40:013
427291720,1ptp4l401ktimersoftd/319:40:013
161122720,13sleep316113-21fschecks_time21:15:163
17981995613,4cyclictest33-21ksoftirqd/200:15:202
277292550,3sleep027730-21cat22:40:290
277292550,3sleep027730-21cat22:40:290
17982995526,4cyclictest41-21ksoftirqd/300:20:123
17981995418,3cyclictest121rcu_preempt23:34:592
17981995311,9cyclictest33-21ksoftirqd/200:00:242
17981995311,8cyclictest33-21ksoftirqd/220:25:232
17981995311,10cyclictest33-21ksoftirqd/222:10:002
17981995215,5cyclictest33-21ksoftirqd/223:39:352
17981995210,8cyclictest33-21ksoftirqd/221:40:172
1798199519,2cyclictest121rcu_preempt21:25:002
17981995115,8cyclictest33-21ksoftirqd/221:45:222
427291500,38ptp4l0-21swapper/319:10:003
1798199508,9cyclictest33-21ksoftirqd/223:25:252
1798199508,8cyclictest33-21ksoftirqd/221:25:142
17981995013,9cyclictest33-21ksoftirqd/221:30:142
17981995012,9cyclictest33-21ksoftirqd/219:25:232
17981995012,5cyclictest33-21ksoftirqd/219:31:072
1798199499,9cyclictest33-21ksoftirqd/220:05:222
1798199498,9cyclictest33-21ksoftirqd/223:45:202
17981994914,9cyclictest33-21ksoftirqd/223:50:302
17981994913,4cyclictest33-21ksoftirqd/222:20:132
17981994912,8cyclictest33-21ksoftirqd/223:40:282
1798199488,9cyclictest33-21ksoftirqd/219:20:302
1798199487,10cyclictest33-21ksoftirqd/220:55:292
17981994813,9cyclictest33-21ksoftirqd/219:15:222
17981994813,8cyclictest33-21ksoftirqd/219:50:152
17979994830,15cyclictest9-21ksoftirqd/021:40:120
1798199478,8cyclictest33-21ksoftirqd/223:08:122
1798199477,4cyclictest33-21ksoftirqd/222:05:122
1798199476,8cyclictest33-21ksoftirqd/221:10:242
17981994714,9cyclictest33-21ksoftirqd/220:40:152
1798199471,3cyclictest121rcu_preempt00:20:132
17981994713,10cyclictest33-21ksoftirqd/219:10:162
1798199468,9cyclictest33-21ksoftirqd/219:40:282
1798199468,9cyclictest33-21ksoftirqd/219:40:272
1798199466,4cyclictest33-21ksoftirqd/200:25:292
17981994612,10cyclictest33-21ksoftirqd/200:00:012
17981994612,10cyclictest33-21ksoftirqd/200:00:012
17979994627,3cyclictest9-21ksoftirqd/021:24:590
1798199457,7cyclictest33-21ksoftirqd/222:35:002
17981994539,3cyclictest33-21ksoftirqd/223:00:012
17981994515,2cyclictest121rcu_preempt22:50:172
17981994512,9cyclictest33-21ksoftirqd/221:40:012
17981994512,8cyclictest33-21ksoftirqd/200:07:312
17981994511,10cyclictest33-21ksoftirqd/223:20:282
129482450,2sleep10-21swapper/121:10:001
17982994432,10cyclictest41-21ksoftirqd/322:40:313
17982994432,10cyclictest41-21ksoftirqd/322:40:313
17982994413,3cyclictest41-21ksoftirqd/319:30:253
1798199446,10cyclictest33-21ksoftirqd/221:50:212
1798199445,5cyclictest33-21ksoftirqd/219:35:142
1798199445,10cyclictest33-21ksoftirqd/223:15:142
17981994430,12cyclictest33-21ksoftirqd/222:15:292
17981994410,9cyclictest33-21ksoftirqd/220:15:002
4662430,1sleep30-21swapper/323:55:273
4662430,1sleep30-21swapper/323:55:263
17982994332,9cyclictest41-21ksoftirqd/323:35:233
17982994312,3cyclictest41-21ksoftirqd/322:20:123
1798199439,10cyclictest33-21ksoftirqd/220:00:142
1798199435,10cyclictest33-21ksoftirqd/222:25:292
17981994338,3cyclictest33-21ksoftirqd/222:35:002
17981994311,11cyclictest33-21ksoftirqd/220:37:582
1798299429,3cyclictest41-21ksoftirqd/320:15:013
17982994211,4cyclictest41-21ksoftirqd/319:25:273
17981994211,13cyclictest33-21ksoftirqd/200:10:132
17982994136,3cyclictest41-21ksoftirqd/323:30:003
17982994135,3cyclictest41-21ksoftirqd/321:50:163
17982994130,9cyclictest41-21ksoftirqd/321:30:263
17982994113,3cyclictest41-21ksoftirqd/321:45:123
1798199418,8cyclictest33-21ksoftirqd/221:05:152
17981994110,9cyclictest33-21ksoftirqd/222:45:202
17980994134,4cyclictest25-21ksoftirqd/121:42:261
427291400,0ptp4l401ktimersoftd/322:50:193
1798299408,4cyclictest41-21ksoftirqd/323:13:173
17982994035,3cyclictest41-21ksoftirqd/320:40:213
17982994035,3cyclictest41-21ksoftirqd/319:59:593
17982994035,2cyclictest41-21ksoftirqd/323:50:303
17982994034,4cyclictest41-21ksoftirqd/323:18:163
17982994034,4cyclictest41-21ksoftirqd/322:25:363
17982994034,3cyclictest41-21ksoftirqd/319:45:173
17982994033,3cyclictest41-21ksoftirqd/320:15:173
1798299401,2cyclictest121rcu_preempt23:00:003
1798199406,9cyclictest33-21ksoftirqd/219:55:172
1798199406,7cyclictest33-21ksoftirqd/222:00:122
17981994036,2cyclictest33-21ksoftirqd/200:35:002
1798199403,2cyclictest121rcu_preempt20:49:592
1798199401,3cyclictest33-21ksoftirqd/223:00:272
1798199400,2cyclictest121rcu_preempt00:40:002
17980994033,4cyclictest25-21ksoftirqd/120:31:241
427291390,0ptp4l401ktimersoftd/320:09:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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