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2026-06-13 - 15:42
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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 Sat Jun 13, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
569521380,5sleep22121099cyclictest12:20:262
2121199702,6cyclictest0-21swapper/311:56:113
21210996830,4cyclictest33-21ksoftirqd/210:00:002
21210996534,5cyclictest33-21ksoftirqd/207:15:292
21210996533,5cyclictest33-21ksoftirqd/209:55:002
21210996532,4cyclictest33-21ksoftirqd/211:25:002
21210996531,6cyclictest33-21ksoftirqd/210:10:242
21210996431,4cyclictest33-21ksoftirqd/212:05:262
21210996325,4cyclictest33-21ksoftirqd/212:40:002
21210996324,16cyclictest33-21ksoftirqd/212:15:022
2121199622,6cyclictest0-21swapper/311:27:063
21210996232,5cyclictest33-21ksoftirqd/210:00:132
21210996230,4cyclictest33-21ksoftirqd/207:45:242
2121199617,6cyclictest0-21swapper/310:40:273
21210996129,5cyclictest33-21ksoftirqd/208:55:012
21210996128,7cyclictest33-21ksoftirqd/211:35:272
21210996128,4cyclictest33-21ksoftirqd/210:40:012
21210996128,4cyclictest33-21ksoftirqd/209:05:162
21210996123,14cyclictest33-21ksoftirqd/208:00:272
21210996031,5cyclictest33-21ksoftirqd/208:35:202
21210996031,3cyclictest33-21ksoftirqd/207:35:272
21210996030,4cyclictest33-21ksoftirqd/207:30:192
21210996028,5cyclictest33-21ksoftirqd/209:20:132
21210996028,3cyclictest33-21ksoftirqd/208:15:142
21210996027,5cyclictest33-21ksoftirqd/208:05:232
134491600,3ptp4l24795-21apt-get11:55:122
21210995930,5cyclictest33-21ksoftirqd/208:20:142
21210995930,4cyclictest33-21ksoftirqd/211:30:012
21210995926,4cyclictest33-21ksoftirqd/210:05:172
21210995916,3cyclictest0-21swapper/211:13:292
2121199587,6cyclictest0-21swapper/309:05:183
2121099588,7cyclictest33-21ksoftirqd/209:35:002
21210995829,3cyclictest33-21ksoftirqd/210:35:002
21210995829,3cyclictest33-21ksoftirqd/210:35:002
21210995828,7cyclictest33-21ksoftirqd/210:55:222
2121099580,2cyclictest121rcu_preempt11:05:012
2121099580,2cyclictest121rcu_preempt11:05:012
134491580,4ptp4l0-21swapper/311:38:243
134491580,4ptp4l0-21swapper/107:50:581
134491580,4ptp4l0-21swapper/107:40:221
2121199574,7cyclictest5503-21sed07:45:153
2121199574,6cyclictest0-21swapper/308:50:113
2121199572,32cyclictest0-21swapper/312:13:323
2121199571,10cyclictest20765-21chrt08:15:283
21210995728,7cyclictest33-21ksoftirqd/207:20:212
21210995710,3cyclictest33-21ksoftirqd/211:45:002
134491570,3ptp4l0-21swapper/207:40:332
2121199567,5cyclictest0-21swapper/310:00:123
2121199565,6cyclictest26111-21cpuspeed_turbos08:30:133
2121199562,10cyclictest29097-21taskset12:04:143
2121099565,3cyclictest121rcu_preempt09:49:592
21210995628,5cyclictest33-21ksoftirqd/209:35:132
21210995628,5cyclictest33-21ksoftirqd/207:50:252
21210995627,5cyclictest33-21ksoftirqd/210:20:272
21210995626,3cyclictest33-21ksoftirqd/207:10:192
21210995625,4cyclictest33-21ksoftirqd/211:30:012
21210995624,3cyclictest33-21ksoftirqd/212:15:242
134491560,4ptp4l0-21swapper/211:45:212
134491560,3ptp4l0-21swapper/309:00:293
2121199557,6cyclictest0-21swapper/308:27:453
2121199554,6cyclictest16287-21sendmail_mailqu10:25:263
2121199553,6cyclictest401ktimersoftd/311:20:133
2121199553,6cyclictest12322-21cut12:35:233
2121199551,11cyclictest16444-21taskset09:19:473
2121199551,10cyclictest3733-21taskset12:17:343
21210995524,4cyclictest33-21ksoftirqd/210:15:182
21210995523,3cyclictest33-21ksoftirqd/212:25:262
21210995520,4cyclictest33-21ksoftirqd/209:00:132
134491550,4ptp4l0-21swapper/112:15:151
134491550,4ptp4l0-21swapper/112:10:171
2121199546,11cyclictest0-21swapper/307:25:193
2121199542,11cyclictest18611-21chrt08:12:193
2121199541,7cyclictest12901-21cut08:00:203
2121199541,11cyclictest31098-21chrt12:05:313
2121199540,15cyclictest25442-21awk09:35:283
2121199540,12cyclictest5889-21taskset12:20:353
2121099545,2cyclictest33-21ksoftirqd/211:54:592
21210995425,5cyclictest33-21ksoftirqd/211:10:012
21210995422,4cyclictest33-21ksoftirqd/210:30:002
134491540,4ptp4l0-21swapper/110:57:181
134491540,4ptp4l0-21swapper/010:55:140
2121199537,7cyclictest0-21swapper/309:45:133
2121199530,20cyclictest0-21swapper/310:35:223
2121099536,3cyclictest33-21ksoftirqd/208:10:262
21210995321,3cyclictest33-21ksoftirqd/208:42:382
134491530,4ptp4l0-21swapper/111:32:181
134491530,3ptp4l0-21swapper/110:02:021
134491530,3ptp4l0-21swapper/109:18:431
2121199528,7cyclictest0-21swapper/310:20:183
2121199526,6cyclictest1402-21sed08:45:193
2121199526,6cyclictest0-21swapper/307:53:173
2121199525,11cyclictest0-21swapper/308:40:263
2121199524,7cyclictest31867-21sed09:50:193
2121199524,6cyclictest21961-21irqrtprio07:10:193
2121199523,8cyclictest32446-21mailstats11:00:253
2121199523,8cyclictest32446-21mailstats11:00:253
2121199523,7cyclictest41-21ksoftirqd/307:30:283
2121199522,11cyclictest26040-21chrt10:47:083
2121199522,10cyclictest7635-21chrt10:07:173
2121199521,15cyclictest6064-21wc08:55:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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