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2026-06-10 - 00:19
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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 50 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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