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2026-04-29 - 15:39
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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 Wed Apr 29, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591231166,22phc2sys0-21swapper/307:07:153
227532200167,22sleep10-21swapper/107:08:281
226642200166,22sleep20-21swapper/207:07:232
227842199167,21sleep00-21swapper/007:08:500
23165996531,7cyclictest9-21ksoftirqd/008:44:590
23165996430,7cyclictest9-21ksoftirqd/011:00:000
23165996331,5cyclictest9-21ksoftirqd/008:25:270
23165996329,7cyclictest9-21ksoftirqd/007:25:010
23165996327,7cyclictest9-21ksoftirqd/012:10:010
23165996230,7cyclictest9-21ksoftirqd/012:20:140
23165996230,6cyclictest9-21ksoftirqd/008:35:140
23165996228,7cyclictest9-21ksoftirqd/010:00:160
23165996228,6cyclictest9-21ksoftirqd/012:35:000
23165996228,6cyclictest9-21ksoftirqd/011:05:000
23165996228,6cyclictest9-21ksoftirqd/009:40:020
23165996131,4cyclictest9-21ksoftirqd/008:20:230
23165996130,6cyclictest9-21ksoftirqd/011:20:180
23165996130,6cyclictest9-21ksoftirqd/011:05:180
23165996130,5cyclictest9-21ksoftirqd/011:40:190
23165996130,4cyclictest9-21ksoftirqd/007:10:190
23165996129,6cyclictest9-21ksoftirqd/011:10:260
23165996129,6cyclictest9-21ksoftirqd/008:35:010
23165996030,6cyclictest9-21ksoftirqd/009:30:170
23165996030,5cyclictest9-21ksoftirqd/008:15:250
23165996029,6cyclictest9-21ksoftirqd/010:10:170
23165996027,7cyclictest9-21ksoftirqd/011:25:140
23165996027,6cyclictest9-21ksoftirqd/010:45:180
23165996027,4cyclictest9-21ksoftirqd/012:30:000
23165996026,6cyclictest9-21ksoftirqd/012:35:130
23165995927,6cyclictest9-21ksoftirqd/007:40:150
23165995927,4cyclictest9-21ksoftirqd/007:50:240
23165995927,11cyclictest9-21ksoftirqd/008:05:140
23165995926,6cyclictest9-21ksoftirqd/012:10:180
23165995926,4cyclictest9-21ksoftirqd/011:50:010
23165995926,4cyclictest9-21ksoftirqd/010:20:260
23165995925,4cyclictest9-21ksoftirqd/008:45:180
23165995829,5cyclictest9-21ksoftirqd/010:15:250
23165995829,5cyclictest9-21ksoftirqd/009:15:260
23165995828,11cyclictest9-21ksoftirqd/012:15:160
23165995828,10cyclictest9-21ksoftirqd/011:50:140
23165995827,6cyclictest9-21ksoftirqd/009:50:170
23165995826,10cyclictest9-21ksoftirqd/010:40:120
23165995823,6cyclictest9-21ksoftirqd/010:30:160
2316699574,11cyclictest20258-21latency_hist10:20:001
2316699574,11cyclictest16048-21hwlatdetect09:05:161
2316699574,11cyclictest12386-21sshd10:01:371
23165995729,4cyclictest9-21ksoftirqd/007:35:000
23165995727,7cyclictest9-21ksoftirqd/007:35:150
23165995726,7cyclictest9-21ksoftirqd/007:55:130
23165995726,6cyclictest9-21ksoftirqd/011:15:010
23165995724,9cyclictest9-21ksoftirqd/012:00:160
23165995724,6cyclictest9-21ksoftirqd/009:00:010
2316699565,11cyclictest29511-21tr08:25:241
2316699564,11cyclictest26998-21mailstats09:25:251
2316699564,11cyclictest20509-21date09:15:001
2316699563,10cyclictest0-21swapper/109:15:151
23166995610,10cyclictest24530-21awk11:30:261
23165995629,7cyclictest9-21ksoftirqd/010:05:230
23165995628,7cyclictest9-21ksoftirqd/009:40:160
23165995625,4cyclictest9-21ksoftirqd/009:20:180
23165995623,4cyclictest9-21ksoftirqd/011:55:130
23165995623,4cyclictest9-21ksoftirqd/009:05:250
23165995622,6cyclictest9-21ksoftirqd/009:10:130
23165995622,4cyclictest9-21ksoftirqd/009:45:260
2316699555,12cyclictest27554-21date11:40:011
2316699554,11cyclictest30003-21date11:45:001
2316699553,11cyclictest484-21latency_hist08:35:001
2316699553,11cyclictest27553-1kworker/1:2H07:20:001
2316699553,11cyclictest0-21swapper/109:35:221
2316699552,11cyclictest4281-21missed_timers07:35:191
23165995526,7cyclictest9-21ksoftirqd/011:35:150
23165995520,4cyclictest9-21ksoftirqd/009:55:150
2316699546,9cyclictest18652-21needreboot12:25:231
2316699545,11cyclictest24874-21awk09:20:261
2316699544,11cyclictest7584-21date11:00:001
2316699544,10cyclictest12587-21date11:10:011
2316699543,11cyclictest24268-21cat07:10:191
2316699543,11cyclictest23432-21cat12:35:191
2316699543,11cyclictest0-21swapper/110:10:271
2316699543,10cyclictest11133-21latency12:10:191
2316699543,10cyclictest10315-21sed10:00:001
23165995428,5cyclictest9-21ksoftirqd/010:35:110
23165995424,5cyclictest9-21ksoftirqd/009:00:260
23165995421,10cyclictest9-21ksoftirqd/010:55:010
254202530,2sleep30-21swapper/311:35:143
2316699538,10cyclictest29263-21/usr/sbin/munin10:35:251
2316699537,10cyclictest26177-21/usr/sbin/munin08:20:151
2316699537,10cyclictest223-21systemd-journal07:55:391
2316699534,17cyclictest19376-21cat11:20:251
2316699532,12cyclictest434-21/usr/sbin/munin09:40:221
23165995325,7cyclictest9-21ksoftirqd/008:10:140
23165995323,10cyclictest9-21ksoftirqd/007:15:160
23165995319,4cyclictest9-21ksoftirqd/007:25:180
23165995225,9cyclictest9-21ksoftirqd/011:30:190
23165995225,6cyclictest9-21ksoftirqd/008:00:210
92702510,3sleep20-21swapper/212:05:262
2316699517,10cyclictest31062-21forks07:25:171
2316699516,9cyclictest14363-21/usr/sbin/munin09:00:231
2316699513,11cyclictest3157-21cpuspeed08:40:131
8562500,1sleep30-21swapper/307:30:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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