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2026-05-21 - 09:04
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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 rackdslot1.osadl.org (updated Thu May 21, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
478521420,4sleep1692599cyclictest23:40:181
68812750,4sleep00-21swapper/022:35:230
6926997035,6cyclictest33-21ksoftirqd/220:30:012
134491700,17ptp4l0-21swapper/019:34:140
6926996734,5cyclictest33-21ksoftirqd/221:24:592
134491660,5ptp4l0-21swapper/019:25:210
134491660,4ptp4l0-21swapper/022:45:130
6926996535,9cyclictest33-21ksoftirqd/220:40:212
6926996532,9cyclictest33-21ksoftirqd/223:45:222
6926996532,10cyclictest33-21ksoftirqd/222:45:152
6926996530,4cyclictest33-21ksoftirqd/221:44:152
134491640,4ptp4l0-21swapper/019:15:020
6926996332,4cyclictest33-21ksoftirqd/220:20:022
6926996331,9cyclictest33-21ksoftirqd/222:35:192
6926996331,6cyclictest33-21ksoftirqd/200:20:262
6926996329,8cyclictest33-21ksoftirqd/219:15:272
6926996329,5cyclictest33-21ksoftirqd/200:00:182
6926996231,9cyclictest33-21ksoftirqd/222:05:152
6926996231,6cyclictest33-21ksoftirqd/220:30:242
6926996230,9cyclictest33-21ksoftirqd/220:20:292
6926996230,6cyclictest33-21ksoftirqd/221:50:012
6926996230,6cyclictest33-21ksoftirqd/221:50:012
6926996229,5cyclictest33-21ksoftirqd/219:10:152
6926996228,9cyclictest33-21ksoftirqd/200:35:212
6926996228,8cyclictest33-21ksoftirqd/221:35:232
175652620,6sleep3692799cyclictest20:40:243
6926996131,4cyclictest33-21ksoftirqd/221:05:002
6926996130,5cyclictest33-21ksoftirqd/219:20:152
6926996033,7cyclictest33-21ksoftirqd/223:25:152
6926996031,19cyclictest33-21ksoftirqd/223:25:002
6926996025,5cyclictest33-21ksoftirqd/221:30:372
692699602,32cyclictest0-21swapper/222:19:102
692699602,32cyclictest0-21swapper/200:08:262
6926996022,5cyclictest33-21ksoftirqd/219:50:152
6926995925,4cyclictest33-21ksoftirqd/200:32:312
692699592,36cyclictest0-21swapper/219:35:142
6926995828,6cyclictest33-21ksoftirqd/220:50:142
6926995827,5cyclictest33-21ksoftirqd/219:55:142
6926995821,5cyclictest33-21ksoftirqd/219:30:212
6926995726,5cyclictest33-21ksoftirqd/223:15:182
134491570,3ptp4l0-21swapper/121:55:131
134491570,3ptp4l0-21swapper/021:15:300
6926995639,3cyclictest33-21ksoftirqd/223:10:162
6926995626,6cyclictest33-21ksoftirqd/222:25:152
6926995625,5cyclictest33-21ksoftirqd/222:40:172
6926995624,5cyclictest33-21ksoftirqd/223:40:272
6926995623,4cyclictest33-21ksoftirqd/223:03:532
134491560,3ptp4l0-21swapper/322:56:113
692699555,6cyclictest33-21ksoftirqd/222:55:132
692699552,34cyclictest0-21swapper/220:10:202
6926995521,3cyclictest33-21ksoftirqd/222:30:012
245392550,2sleep1231rcuc/100:25:001
134491550,5ptp4l0-21swapper/022:15:390
134491550,4ptp4l0-21swapper/121:45:151
134491550,4ptp4l0-21swapper/121:45:151
134491550,3ptp4l0-21swapper/123:20:081
134491550,3ptp4l0-21swapper/022:00:170
692699546,5cyclictest33-21ksoftirqd/223:30:272
6926995424,6cyclictest33-21ksoftirqd/223:50:112
692699542,21cyclictest0-21swapper/223:07:502
260482540,5sleep10-21swapper/100:25:241
134491540,5ptp4l0-21swapper/023:20:140
134491540,4ptp4l0-21swapper/122:01:511
134491540,4ptp4l0-21swapper/020:32:490
134491540,3ptp4l0-21swapper/120:25:101
692699534,9cyclictest33-21ksoftirqd/221:30:012
692699534,6cyclictest33-21ksoftirqd/223:40:012
692699534,5cyclictest33-21ksoftirqd/220:55:182
692699532,32cyclictest0-21swapper/220:35:242
692699532,17cyclictest0-21swapper/220:01:502
134491530,5ptp4l0-21swapper/119:05:201
134491530,4ptp4l27718-21sshd21:00:331
134491530,4ptp4l0-21swapper/122:15:221
134491530,3ptp4l0-21swapper/122:50:251
692699525,5cyclictest19202-21gpgv21:55:012
692699525,4cyclictest16348-21latency_hist19:30:012
692699524,6cyclictest33-21ksoftirqd/221:05:152
692699524,6cyclictest33-21ksoftirqd/221:05:142
692699523,7cyclictest0-21swapper/222:20:162
692699522,7cyclictest0-21swapper/222:50:122
692699522,7cyclictest0-21swapper/219:40:192
692699522,19cyclictest0-21swapper/221:17:592
134491520,5ptp4l0-21swapper/219:08:442
134491520,3ptp4l0-21swapper/119:53:391
692699515,5cyclictest33-21ksoftirqd/200:15:132
692699513,5cyclictest12826-21awk00:00:002
6926995131,9cyclictest33-21ksoftirqd/200:25:162
692699512,7cyclictest0-21swapper/222:10:142
692699512,6cyclictest0-21swapper/222:00:242
134491510,4ptp4l0-21swapper/122:07:231
134491510,4ptp4l0-21swapper/019:54:540
134491510,4ptp4l0-21swapper/019:49:370
692699506,7cyclictest33-21ksoftirqd/220:05:312
692699502,8cyclictest0-21swapper/219:45:252
692699501,9cyclictest33-21ksoftirqd/221:55:132
692699501,6cyclictest33-21ksoftirqd/220:45:172
6925995017,4cyclictest25-21ksoftirqd/121:15:031
6925995016,5cyclictest25-21ksoftirqd/120:55:341
134491500,5ptp4l0-21swapper/319:09:583
134491500,4ptp4l0-21swapper/121:32:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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