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2026-04-12 - 20:45
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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 Sun Apr 12, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591234168,23phc2sys0-21swapper/307:09:063
294282203170,21sleep20-21swapper/207:07:572
294212201166,23sleep00-21swapper/007:07:520
292622200165,24sleep10-21swapper/107:05:471
29889997128,11cyclictest33-21ksoftirqd/212:00:302
29889996731,8cyclictest33-21ksoftirqd/210:15:192
29887996329,6cyclictest9-21ksoftirqd/007:35:270
29889996129,4cyclictest33-21ksoftirqd/207:40:212
29889996128,4cyclictest33-21ksoftirqd/209:15:272
29887996121,5cyclictest9-21ksoftirqd/011:45:180
29887996121,5cyclictest9-21ksoftirqd/011:45:180
5142600,2sleep00-21swapper/011:35:210
29889996022,6cyclictest33-21ksoftirqd/209:25:262
29889996022,10cyclictest33-21ksoftirqd/207:45:172
29887996030,5cyclictest9-21ksoftirqd/007:25:130
29887996022,5cyclictest9-21ksoftirqd/009:20:160
29889995928,7cyclictest33-21ksoftirqd/212:20:142
29889995927,6cyclictest33-21ksoftirqd/211:55:242
29887995930,4cyclictest9-21ksoftirqd/012:35:260
29887995929,7cyclictest9-21ksoftirqd/008:45:170
29887995927,6cyclictest9-21ksoftirqd/011:10:270
29887995927,5cyclictest9-21ksoftirqd/009:45:180
29889995826,6cyclictest33-21ksoftirqd/211:45:152
29889995826,6cyclictest33-21ksoftirqd/211:45:152
29889995825,6cyclictest33-21ksoftirqd/208:50:012
29889995823,4cyclictest33-21ksoftirqd/207:15:192
29889995823,3cyclictest33-21ksoftirqd/211:20:192
29889995823,10cyclictest33-21ksoftirqd/209:05:012
29889995822,6cyclictest33-21ksoftirqd/208:10:212
29889995822,4cyclictest33-21ksoftirqd/210:25:222
29889995820,9cyclictest33-21ksoftirqd/208:20:262
29887995829,6cyclictest9-21ksoftirqd/007:50:220
29887995827,8cyclictest9-21ksoftirqd/010:50:130
29887995827,5cyclictest9-21ksoftirqd/010:45:150
29887995826,5cyclictest9-21ksoftirqd/012:20:120
29887995825,5cyclictest9-21ksoftirqd/010:00:180
29887995820,6cyclictest9-21ksoftirqd/011:55:180
29887995819,5cyclictest9-21ksoftirqd/008:05:190
29887995816,6cyclictest9-21ksoftirqd/009:55:000
29889995722,9cyclictest33-21ksoftirqd/210:10:142
29887995724,5cyclictest9-21ksoftirqd/010:05:130
29887995718,5cyclictest9-21ksoftirqd/010:10:130
29889995624,4cyclictest33-21ksoftirqd/211:50:172
29889995622,9cyclictest33-21ksoftirqd/212:25:202
29889995622,4cyclictest33-21ksoftirqd/209:50:142
29889995620,6cyclictest33-21ksoftirqd/209:30:162
29887995625,5cyclictest9-21ksoftirqd/009:00:250
29887995625,5cyclictest9-21ksoftirqd/009:00:250
29887995624,5cyclictest9-21ksoftirqd/010:20:140
29887995624,5cyclictest9-21ksoftirqd/009:30:140
29887995623,6cyclictest9-21ksoftirqd/010:15:130
2989099551,10cyclictest1043-21sendmail_mailqu09:25:233
29889995527,4cyclictest33-21ksoftirqd/212:10:142
29889995526,5cyclictest33-21ksoftirqd/211:25:122
29889995521,9cyclictest33-21ksoftirqd/211:35:232
29889995521,9cyclictest33-21ksoftirqd/207:35:282
29889995521,10cyclictest33-21ksoftirqd/207:20:172
29889995520,4cyclictest33-21ksoftirqd/210:40:142
29887995528,4cyclictest9-21ksoftirqd/007:30:180
29887995524,6cyclictest9-21ksoftirqd/007:40:130
29887995523,5cyclictest9-21ksoftirqd/009:57:180
29887995523,5cyclictest9-21ksoftirqd/007:45:190
138491550,1ptp4l391rcuc/308:50:223
2989099547,7cyclictest19425-21sed11:10:003
29889995420,3cyclictest33-21ksoftirqd/212:05:162
29887995422,7cyclictest9-21ksoftirqd/008:10:250
29887995422,6cyclictest9-21ksoftirqd/007:10:200
29887995421,5cyclictest9-21ksoftirqd/008:30:270
29887995416,5cyclictest9-21ksoftirqd/011:05:160
29890995319,7cyclictest41-21ksoftirqd/310:01:353
2988999532,8cyclictest33-21ksoftirqd/208:15:242
29889995320,10cyclictest33-21ksoftirqd/207:10:112
29890995214,3cyclictest41-21ksoftirqd/310:17:203
29890995212,4cyclictest41-21ksoftirqd/310:45:443
2989099521,17cyclictest16246-21wc07:45:243
2989099521,13cyclictest31654-21unixbench_multi07:10:273
29889995218,4cyclictest33-21ksoftirqd/207:50:252
29889995218,10cyclictest33-21ksoftirqd/210:55:232
29889995216,10cyclictest33-21ksoftirqd/212:30:262
2988799525,5cyclictest9-21ksoftirqd/008:50:210
2989099518,5cyclictest41-21ksoftirqd/311:36:353
2989099516,7cyclictest32619-21sed10:30:193
2989099515,7cyclictest27498-21grep11:25:133
2989099514,7cyclictest2425-21sed07:20:003
29890995117,9cyclictest41-21ksoftirqd/309:33:113
2988999519,3cyclictest33-21ksoftirqd/209:40:132
2988999519,3cyclictest33-21ksoftirqd/208:25:192
2988999515,9cyclictest33-21ksoftirqd/208:50:152
29889995147,2cyclictest321ktimersoftd/210:50:252
29889995131,9cyclictest33-21ksoftirqd/210:30:252
29889995112,3cyclictest33-21ksoftirqd/211:40:122
2988799514,7cyclictest9-21ksoftirqd/012:20:000
29887995123,5cyclictest9-21ksoftirqd/007:20:130
2989099506,6cyclictest41-21ksoftirqd/311:00:193
2989099504,6cyclictest264292sleep312:27:073
2989099503,6cyclictest27026-21cstates10:20:153
29890995018,7cyclictest41-21ksoftirqd/307:33:323
2989099500,10cyclictest19358-21/usr/sbin/munin10:05:263
2988999505,9cyclictest33-21ksoftirqd/208:35:152
2988999505,9cyclictest33-21ksoftirqd/208:35:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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