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2026-04-03 - 07:59
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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 Fri Apr 03, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23168991239,94cyclictest0-21swapper/022:05:120
23168991178,87cyclictest0-21swapper/020:35:110
231689910811,78cyclictest0-21swapper/000:00:130
23168991057,77cyclictest0-21swapper/020:20:140
231689910185,11cyclictest14-21ksoftirqd/000:09:010
231689910185,11cyclictest14-21ksoftirqd/000:09:010
2316899986,20cyclictest0-21swapper/023:00:110
2294929814,37sleep00-21swapper/019:09:060
2261529618,33sleep10-21swapper/119:06:021
2316899899,61cyclictest0-21swapper/021:05:240
23168998611,55cyclictest0-21swapper/022:10:120
23169998417,53cyclictest0-21swapper/123:45:241
23169998314,55cyclictest0-21swapper/120:50:101
2316899838,55cyclictest0-21swapper/023:50:110
23168998314,47cyclictest0-21swapper/022:45:120
2316999827,20cyclictest26173-21apt-get23:50:131
2316899827,55cyclictest0-21swapper/019:30:100
2316999817,20cyclictest16486-21apt-get20:20:121
2316999809,21cyclictest6571-21apt-get22:55:131
23169998022,20cyclictest457-21dbus-daemon20:31:201
23169998011,53cyclictest1742-21diskmemload21:10:131
2316899805,58cyclictest0-21swapper/019:25:110
2316999798,17cyclictest2906-21apt-get00:15:141
2316999798,16cyclictest32538-21apt-get21:05:241
2316999797,27cyclictest1360-21apt-get22:40:151
2316999797,16cyclictest2483-21apt-get19:40:141
23169997920,21cyclictest457-21dbus-daemon00:40:001
2316899799,20cyclictest0-21swapper/023:35:130
2316999788,23cyclictest6712-21apt-get00:25:141
2316999786,18cyclictest18833-21apt-get23:30:111
2316899787,53cyclictest0-21swapper/020:15:110
23168997811,17cyclictest0-21swapper/023:05:140
2316999777,21cyclictest3649-21apt-get21:15:161
2316999777,17cyclictest31970-21apt-get22:35:151
2316999777,15cyclictest28211-21apt-get23:55:251
23169997726,17cyclictest21792-21head22:05:261
23169997723,17cyclictest12806-21sort23:10:351
2316899778,51cyclictest0-21swapper/000:35:140
2316899778,49cyclictest0-21swapper/020:10:150
2316899777,22cyclictest0-21swapper/022:35:160
2316999768,25cyclictest27386-21apt-get19:20:151
2316999768,17cyclictest9457-21apt-get20:00:121
2316999767,23cyclictest30495-21apt-get21:00:131
23169997619,24cyclictest457-21dbus-daemon19:15:001
2316899768,51cyclictest0-21swapper/021:55:120
2316899767,53cyclictest0-21swapper/019:15:120
2316899767,20cyclictest0-21swapper/021:00:120
2316899765,36cyclictest5729-21sed22:50:310
2316999758,18cyclictest4221-21apt-get19:45:131
2316999758,16cyclictest10068-21apt-get23:05:131
2316999753,22cyclictest8801-21/usr/sbin/munin00:30:241
23169997518,16cyclictest17479-21cron21:55:011
2316899758,54cyclictest0-21swapper/023:45:250
2316999748,15cyclictest17095-21apt-get23:25:131
2316999744,14cyclictest24685-21apt-get22:15:151
2316999743,17cyclictest562-21runrttasks21:40:351
23169997422,18cyclictest1079-21sort00:10:011
23169997422,18cyclictest1079-21sort00:10:011
2316999738,19cyclictest30069-21apt-get00:00:111
2316999737,18cyclictest30229-21apt-get22:30:161
2316999737,17cyclictest3098-21apt-get22:45:141
2316999733,19cyclictest562-21runrttasks21:31:461
2316999732,19cyclictest28116-21latency_hist22:25:021
23169997316,17cyclictest20641-21seq22:01:271
23169997316,17cyclictest20641-21seq22:01:271
23169997315,17cyclictest23402-21cat23:40:361
23169997315,17cyclictest23402-21cat23:40:361
2316899738,51cyclictest0-21swapper/022:55:130
2316999727,18cyclictest15358-21apt-get23:20:151
2316999727,17cyclictest7699-21apt-get19:55:131
2316999726,18cyclictest14723-21apt-get20:15:131
2316999726,17cyclictest12987-21apt-get20:10:141
2316999723,28cyclictest31588-21sort19:30:161
23169997221,18cyclictest18619-21if_enp2s020:25:231
2316899725,34cyclictest18992-21tail23:30:150
2316899724,35cyclictest5224-21sed19:45:340
2316999718,20cyclictest4972-21apt-get00:20:241
2316999717,17cyclictest29615-21apt-get19:25:111
2316999717,15cyclictest17651-21apt-get21:55:141
2316999716,16cyclictest13596-21apt-get23:15:141
2316999715,24cyclictest5411-21apt-get21:20:111
2316999714,23cyclictest7244-21aten2.4-expect21:25:161
2316999713,25cyclictest24528-21idleruntime-cro22:15:001
2316999713,24cyclictest5872-21unixbench_multi22:50:331
2316999713,23cyclictest562-21runrttasks20:05:301
2316999713,23cyclictest562-21runrttasks20:05:301
2316999713,18cyclictest9500-21runrttasks23:00:481
23169997111,21cyclictest457-21dbus-daemon22:25:051
2316899718,46cyclictest0-21swapper/021:50:140
2316999706,17cyclictest5960-21apt-get19:50:151
2316999703,24cyclictest14228-21aten2.4_r3power21:45:151
2316999703,22cyclictest11731-21unixbench_singl21:35:351
23169997022,16cyclictest1465-21expr00:10:181
23169997020,10cyclictest0-21swapper/119:15:051
23169997019,17cyclictest28837-21/usr/sbin/munin20:55:151
23169997016,19cyclictest457-21dbus-daemon23:39:011
2316899709,16cyclictest0-21swapper/019:55:110
2316899707,44cyclictest0-21swapper/019:40:130
2316999697,19cyclictest23523-21apt-get20:40:131
2316999697,18cyclictest21704-21apt-get20:35:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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