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2026-05-24 - 23:48
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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 Sun May 24, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2477999066,15cyclictest14-21ksoftirqd/012:00:110
232528624,16sleep10-21swapper/107:09:441
2477998556,16cyclictest14-21ksoftirqd/012:05:120
2477998515,56cyclictest0-21swapper/012:30:110
2477998456,18cyclictest14-21ksoftirqd/009:40:230
2477998315,56cyclictest0-21swapper/011:55:130
2477998314,54cyclictest0-21swapper/011:35:110
2477998214,57cyclictest0-21swapper/010:00:140
2477998113,56cyclictest0-21swapper/010:45:140
247799806,59cyclictest4410-21apt-get08:45:130
2477998051,16cyclictest14-21ksoftirqd/007:15:110
247799802,71cyclictest2516-21netstat11:40:270
2477998017,49cyclictest0-21swapper/007:20:130
2477998016,51cyclictest0-21swapper/009:55:140
2477998014,52cyclictest0-21swapper/009:05:130
2477998013,53cyclictest0-21swapper/007:55:140
2477998012,55cyclictest0-21swapper/009:35:120
247799797,61cyclictest21078-21apt-get12:35:130
247799797,60cyclictest14920-21apt-get09:15:130
2477997914,52cyclictest0-21swapper/010:20:130
2477997914,51cyclictest0-21swapper/011:15:120
2477997914,51cyclictest0-21swapper/008:30:110
2477997914,51cyclictest0-21swapper/008:30:110
2477997913,53cyclictest0-21swapper/008:40:130
2477997912,53cyclictest0-21swapper/007:10:170
247799787,53cyclictest5328-21apt-get11:50:130
247799786,60cyclictest2087-21apt-get10:10:110
2477997816,52cyclictest0-21swapper/008:15:140
2477997815,54cyclictest0-21swapper/007:30:140
2477997812,53cyclictest0-21swapper/009:00:150
2477997747,17cyclictest13004-21diskmemload09:10:130
2477997714,51cyclictest0-21swapper/009:45:110
2477997713,54cyclictest0-21swapper/008:35:130
2477997711,51cyclictest0-21swapper/011:00:150
247799767,58cyclictest14059-21apt-get07:40:120
247799766,56cyclictest18148-21apt-get10:55:140
247799766,55cyclictest29803-21apt-get08:25:140
247799763,16cyclictest26249-21runrttasks08:15:010
247799763,16cyclictest26249-21runrttasks08:15:010
247799762,68cyclictest8242-21diskstats08:55:210
2477997614,49cyclictest0-21swapper/007:45:110
72427516,50sleep00-21swapper/007:05:070
247799757,57cyclictest12357-21apt-get12:10:110
247799757,57cyclictest12357-21apt-get12:10:110
247799756,59cyclictest21951-21apt-get11:05:250
247799756,54cyclictest14096-21apt-get12:15:140
247799755,57cyclictest27488-21apt-get09:50:140
2477997516,47cyclictest0-21swapper/011:45:120
2477997516,45cyclictest0-21swapper/011:20:120
2477997514,48cyclictest0-21swapper/010:05:140
248299743,19cyclictest26-21ksoftirqd/111:05:231
247799746,52cyclictest16685-21apt-get09:20:140
247799745,64cyclictest0-21swapper/010:30:300
247799743,64cyclictest6302-21basename08:50:170
247799743,45cyclictest29135-21tail08:20:350
2477997419,47cyclictest8988-21sort10:30:010
2477997414,48cyclictest0-21swapper/010:35:140
2477997414,46cyclictest0-21swapper/011:25:140
247799736,55cyclictest22774-21apt-get08:05:130
2477997315,49cyclictest0-21swapper/012:20:120
247799726,54cyclictest16410-21apt-get10:50:150
247799726,52cyclictest3830-21apt-get10:15:110
2477997220,45cyclictest13611-21systemd07:38:180
247799717,48cyclictest21035-21apt-get08:00:140
247799713,58cyclictest13049-21aten2.4-expect10:40:270
247799712,20cyclictest20507-21diskstats09:30:200
2477997113,48cyclictest0-21swapper/007:50:160
248299703,36cyclictest0-21swapper/112:00:251
2482997021,38cyclictest0-21swapper/108:35:131
247799695,50cyclictest23740-21apt-get11:10:130
247799693,57cyclictest243-21systemd-journal11:34:340
2477996812,48cyclictest18404-21seq09:25:030
247799679,48cyclictest17698-21aten2.4-expect12:25:180
247799666,47cyclictest8330-21apt-get07:25:140
2482996522,29cyclictest26-21ksoftirqd/109:35:121
8912640,4sleep1251rcuc/110:05:261
2482996422,30cyclictest26-21ksoftirqd/107:50:131
2482996319,38cyclictest26-21ksoftirqd/111:45:361
2482996317,14cyclictest151rcu_preempt12:35:131
2482996213,43cyclictest0-21swapper/112:30:191
248299617,42cyclictest0-21swapper/108:55:131
2482996022,11cyclictest0-21swapper/107:38:481
2482996014,10cyclictest0-21swapper/111:15:201
2482996012,34cyclictest0-21swapper/110:50:141
248299596,39cyclictest0-21swapper/112:10:111
248299596,39cyclictest0-21swapper/112:10:101
248299593,20cyclictest168-21usb-storage07:45:201
2482995914,9cyclictest26-21ksoftirqd/109:50:251
2482995821,20cyclictest26-21ksoftirqd/109:01:221
2482995813,23cyclictest26-21ksoftirqd/109:20:121
2482995720,27cyclictest26-21ksoftirqd/111:30:131
2482995716,21cyclictest26-21ksoftirqd/108:03:061
248299569,33cyclictest0-21swapper/108:20:141
248299566,12cyclictest26-21ksoftirqd/111:36:391
248299558,42cyclictest0-21swapper/108:50:331
2482995513,37cyclictest0-21swapper/107:15:131
2482995512,38cyclictest0-21swapper/111:50:141
248299547,13cyclictest0-21swapper/110:55:141
2482995412,37cyclictest0-21swapper/108:25:151
2482995410,10cyclictest3827-21/usr/sbin/munin10:15:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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