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2025-12-09 - 10:56
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Tue Dec 09, 2025 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146349911382,21cyclictest14-21ksoftirqd/023:30:140
146349911277,20cyclictest14-21ksoftirqd/019:45:140
14634991049,86cyclictest27549-21seq21:15:250
146419910352,35cyclictest26-21ksoftirqd/122:55:161
146349910371,19cyclictest14-21ksoftirqd/021:55:120
146349910011,75cyclictest0-21swapper/022:15:140
14641999948,34cyclictest26-21ksoftirqd/119:50:131
14634999969,18cyclictest14-21ksoftirqd/019:35:150
14634999964,20cyclictest14-21ksoftirqd/000:35:140
14634999859,24cyclictest14-21ksoftirqd/022:30:160
1464199975,70cyclictest5478-21apt-get23:15:141
14641999714,63cyclictest0-21swapper/121:25:161
14634999712,30cyclictest0-21swapper/020:15:130
14634999711,72cyclictest0-21swapper/021:30:140
104502950,6chrt10447-21timerwakeupswit23:25:371
14641999412,61cyclictest0-21swapper/120:25:151
14634999459,24cyclictest14-21ksoftirqd/022:05:140
14634999357,24cyclictest14-21ksoftirqd/022:00:240
14641999212,59cyclictest0-21swapper/122:25:141
14641999212,59cyclictest0-21swapper/100:30:141
14634999256,24cyclictest14-21ksoftirqd/000:10:160
14641999113,55cyclictest0-21swapper/123:35:161
1463499919,71cyclictest803-21gpm20:50:130
14634999154,24cyclictest14-21ksoftirqd/022:10:170
1428729132,46sleep10-21swapper/119:08:121
14641999011,56cyclictest0-21swapper/123:00:121
14634999058,21cyclictest14-21ksoftirqd/023:40:240
1463499903,62cyclictest22458-21cut21:00:280
14641998938,34cyclictest0-21swapper/100:20:121
1463499898,51cyclictest0-21swapper/019:55:250
14634998951,26cyclictest14-21ksoftirqd/022:20:150
1463499892,64cyclictest1308-21taskset00:30:450
1412328917,26sleep00-21swapper/019:06:270
14634998812,62cyclictest0-21swapper/020:45:160
14634998812,62cyclictest0-21swapper/019:30:130
14634998810,62cyclictest553-21runrttasks00:25:130
14641998713,57cyclictest0-21swapper/121:40:131
14641998713,53cyclictest0-21swapper/100:05:131
1463499873,57cyclictest29313-21apt-get22:50:140
14634998714,61cyclictest0-21swapper/021:05:140
14641998611,55cyclictest0-21swapper/122:45:161
14634998648,25cyclictest0-21swapper/020:35:130
1463499864,56cyclictest21901-21apache200:00:010
1463499862,57cyclictest254-21systemd-journal22:26:270
14634998613,61cyclictest0-21swapper/022:55:140
14634998611,61cyclictest0-21swapper/021:45:150
1463499857,50cyclictest0-21swapper/023:10:350
1463499856,63cyclictest7690-21taskset21:50:220
14634998513,59cyclictest0-21swapper/021:25:120
14634998512,59cyclictest0-21swapper/020:55:160
14634998512,59cyclictest0-21swapper/020:40:130
14634998510,61cyclictest25319-21diskmemload21:10:140
14641998433,34cyclictest0-21swapper/121:45:131
14634998414,58cyclictest0-21swapper/019:25:220
14634998414,57cyclictest0-21swapper/020:20:150
14634998414,56cyclictest0-21swapper/022:40:140
14634998412,61cyclictest0-21swapper/019:40:120
14634998412,60cyclictest0-21swapper/023:50:160
14634998412,60cyclictest0-21swapper/023:50:150
14634998412,58cyclictest0-21swapper/021:40:160
14634998412,58cyclictest0-21swapper/019:10:170
14634998412,56cyclictest0-21swapper/023:15:160
14641998334,32cyclictest0-21swapper/121:30:121
14641998311,52cyclictest0-21swapper/120:50:151
14634998314,58cyclictest0-21swapper/020:30:240
14634998313,58cyclictest0-21swapper/000:00:150
14634998313,56cyclictest0-21swapper/000:15:160
14634998312,59cyclictest0-21swapper/023:25:140
14634998312,58cyclictest0-21swapper/022:45:130
14634998312,58cyclictest0-21swapper/021:35:160
14634998311,59cyclictest0-21swapper/021:20:150
14634998311,57cyclictest0-21swapper/020:00:150
14634998212,56cyclictest0-21swapper/023:45:140
14634998211,58cyclictest0-21swapper/020:10:160
14634998211,58cyclictest0-21swapper/020:10:150
14634998211,57cyclictest0-21swapper/023:35:120
14634998113,57cyclictest0-21swapper/022:35:150
14634998112,54cyclictest0-21swapper/000:05:150
14634998111,53cyclictest0-21swapper/023:05:150
1464199808,55cyclictest25319-21diskmemload21:10:181
14634998013,56cyclictest0-21swapper/019:50:120
14634998012,53cyclictest0-21swapper/019:20:120
1463499796,61cyclictest9382-21apt-get20:25:160
14641997732,23cyclictest0-21swapper/100:25:151
14634997731,31cyclictest14-21ksoftirqd/023:20:140
1464199769,51cyclictest0-21swapper/122:05:121
1463499766,57cyclictest0-21swapper/020:09:540
14634997610,49cyclictest0-21swapper/019:15:170
14634997610,49cyclictest0-21swapper/019:15:160
1464199753,51cyclictest0-21swapper/122:50:151
14641997529,27cyclictest0-21swapper/122:40:161
14641997411,47cyclictest0-21swapper/121:00:161
1463499748,55cyclictest29097-21apt-get00:20:140
1464199735,52cyclictest36-21kcompactd022:15:161
1463499723,61cyclictest1117-21ntp_states23:00:310
14641997129,27cyclictest0-21swapper/123:50:141
14641997129,27cyclictest0-21swapper/123:50:131
14641997031,22cyclictest0-21swapper/119:15:161
14641997031,22cyclictest0-21swapper/119:15:151
14641997023,27cyclictest0-21swapper/120:05:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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