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2026-06-10 - 00:18
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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 Jun 09, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37232228166,51sleep10-21swapper/107:06:321
36612203168,23sleep30-21swapper/307:05:463
37242202168,22sleep20-21swapper/207:06:322
37222201167,22sleep00-21swapper/007:06:300
263721650,6sleep1429299cyclictest08:10:131
1814921540,3sleep3429499cyclictest07:35:213
1264021520,6sleep2429399cyclictest10:40:182
1385918868,11phc2sys0-21swapper/307:10:023
400028261,11sleep10-21swapper/107:10:021
4294996915,9cyclictest41-21ksoftirqd/310:25:143
429299657,20cyclictest16992-21uname11:55:011
4294996420,11cyclictest41-21ksoftirqd/309:00:233
128162630,8sleep3429499cyclictest07:25:183
4291996233,3cyclictest9-21ksoftirqd/011:35:210
4291996229,4cyclictest9-21ksoftirqd/012:04:590
4291996228,10cyclictest9-21ksoftirqd/008:35:000
4291996123,6cyclictest9-21ksoftirqd/010:40:000
4294996014,10cyclictest41-21ksoftirqd/311:45:153
429299602,12cyclictest7857-21sed09:25:181
429299602,12cyclictest7857-21sed09:25:181
429299602,12cyclictest15037-21sed07:30:181
4291996022,10cyclictest9-21ksoftirqd/008:35:210
4291996022,10cyclictest9-21ksoftirqd/008:35:210
4294995922,9cyclictest41-21ksoftirqd/310:40:283
429299592,16cyclictest2099-21/usr/sbin/munin12:30:231
429299592,12cyclictest18364-21mailstats09:45:241
429299591,16cyclictest12369-21df_abs09:35:141
4291995931,4cyclictest9-21ksoftirqd/010:20:170
4291995924,4cyclictest9-21ksoftirqd/008:00:000
4293995813,5cyclictest33-21ksoftirqd/210:00:272
429299582,12cyclictest17368-21tr11:55:161
429299581,12cyclictest5545-21cut12:35:201
4291995829,4cyclictest9-21ksoftirqd/009:35:130
4291995827,4cyclictest9-21ksoftirqd/010:00:130
4291995825,5cyclictest9-21ksoftirqd/008:15:280
4294995728,9cyclictest41-21ksoftirqd/308:25:183
4293995726,5cyclictest33-21ksoftirqd/207:55:142
429299573,9cyclictest8348-21cut11:35:181
429299573,17cyclictest22700-21cut11:00:181
429299571,12cyclictest32741-21irqrtprio11:20:191
138491570,1ptp4l401ktimersoftd/311:52:373
4294995624,4cyclictest41-21ksoftirqd/308:30:203
4294995621,10cyclictest41-21ksoftirqd/308:05:263
4294995620,8cyclictest41-21ksoftirqd/309:20:153
429299567,8cyclictest26845-21latency_hist09:00:001
429299561,11cyclictest13122-21sed11:45:191
429299560,12cyclictest30311-21irqrtprio09:05:181
429299560,11cyclictest27560-21irqrtprio11:10:171
4291995635,7cyclictest9-21ksoftirqd/011:15:010
4291995627,4cyclictest9-21ksoftirqd/008:25:000
4291995625,4cyclictest9-21ksoftirqd/007:20:240
4291995623,7cyclictest9-21ksoftirqd/007:40:160
280242560,2sleep20-21swapper/210:05:242
4294995525,4cyclictest41-21ksoftirqd/308:20:133
4293995524,3cyclictest33-21ksoftirqd/209:55:192
429299557,7cyclictest30190-21cut08:00:171
429299555,7cyclictest17588-21hwlatdetect08:40:161
429299552,11cyclictest6772-21latency_hist08:20:001
429299552,11cyclictest10561-21sed08:25:181
429299551,16cyclictest7172-21df_abs07:15:141
429299551,11cyclictest26918-21date12:15:001
429299551,11cyclictest19060-21latency_hist10:55:001
429299550,11cyclictest5442-21irqrtprio11:30:181
429299550,11cyclictest10271-21irqrtprio10:35:211
4291995527,7cyclictest9-21ksoftirqd/011:25:000
4291995527,7cyclictest9-21ksoftirqd/007:10:220
4291995526,4cyclictest9-21ksoftirqd/008:45:140
4291995524,5cyclictest9-21ksoftirqd/008:25:170
4291995523,4cyclictest9-21ksoftirqd/011:40:190
4291995520,4cyclictest9-21ksoftirqd/011:25:220
4291995519,6cyclictest9-21ksoftirqd/007:45:260
138491550,1ptp4l401ktimersoftd/311:43:313
4294995424,4cyclictest41-21ksoftirqd/311:40:003
4294995423,4cyclictest41-21ksoftirqd/310:30:263
4294995417,9cyclictest41-21ksoftirqd/312:35:153
4294995413,4cyclictest41-21ksoftirqd/310:50:273
4293995420,9cyclictest33-21ksoftirqd/208:55:132
4293995417,8cyclictest33-21ksoftirqd/211:25:002
429299547,6cyclictest13117-21sed08:30:201
429299546,6cyclictest24831-21cut07:50:171
429299546,6cyclictest20045-21hwlatdetect08:45:171
429299545,6cyclictest23619-21mailstats12:05:231
429299540,11cyclictest450-21irqrtprio12:25:201
429299540,11cyclictest450-21irqrtprio12:25:201
429299540,11cyclictest14924-21cut10:45:161
4291995424,5cyclictest9-21ksoftirqd/009:25:210
4291995424,5cyclictest9-21ksoftirqd/009:25:210
4291995419,5cyclictest9-21ksoftirqd/011:00:000
4294995319,11cyclictest41-21ksoftirqd/307:25:003
4293995324,3cyclictest33-21ksoftirqd/207:45:002
4293995323,4cyclictest33-21ksoftirqd/209:00:012
4293995311,9cyclictest33-21ksoftirqd/211:30:262
429299537,7cyclictest3587-21timerwakeupswit10:20:281
429299537,6cyclictest28450-21sed10:05:281
429299536,6cyclictest29751-21cstates12:20:151
429299536,6cyclictest1551-21latency_hist10:20:001
429299536,6cyclictest12130-21cstates10:40:151
429299535,6cyclictest16742-21latency_hist08:40:011
429299535,6cyclictest16742-21latency_hist08:40:001
429299532,10cyclictest12152-21cat11:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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