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2026-01-07 - 14:06
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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 Wed Jan 07, 2026 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294052920,5chrt29298-21/usr/sbin/munin08:05:141
871499896,68cyclictest8797-21apt-get07:10:150
8714998914,60cyclictest0-21swapper/011:25:140
871499886,66cyclictest27568-21apt-get08:00:140
8714998815,60cyclictest0-21swapper/012:30:140
8714998716,57cyclictest0-21swapper/009:00:120
8714998715,61cyclictest0-21swapper/009:40:150
8714998714,68cyclictest19352-31find07:36:270
8714998714,61cyclictest0-21swapper/008:45:110
871499866,69cyclictest18226-21apt-get09:05:120
8714998618,58cyclictest0-21swapper/011:50:140
8714998617,56cyclictest0-21swapper/011:35:100
8714998614,57cyclictest0-21swapper/009:45:100
8714998613,60cyclictest0-21swapper/012:05:120
8714998612,59cyclictest0-21swapper/009:30:120
871499856,65cyclictest6838-21apt-get10:05:160
8714998536,38cyclictest0-21swapper/009:15:140
8714998514,61cyclictest0-21swapper/010:55:140
8714998514,59cyclictest0-21swapper/011:00:130
871499847,63cyclictest28735-21apt-get09:35:150
871499847,61cyclictest29303-21apt-get08:05:110
871499846,64cyclictest12814-21apt-get07:20:140
871499846,62cyclictest10129-21apt-get11:45:140
8714998427,44cyclictest0-21swapper/012:10:130
8714998419,52cyclictest0-21swapper/010:15:130
8714998414,60cyclictest0-21swapper/007:45:110
8714998414,60cyclictest0-21swapper/007:45:100
8714998414,57cyclictest0-21swapper/010:40:120
8714998414,56cyclictest0-21swapper/008:55:140
8714998413,57cyclictest0-21swapper/009:10:150
8714998412,61cyclictest0-21swapper/010:35:130
8714998320,52cyclictest0-21swapper/011:40:220
8714998316,56cyclictest0-21swapper/009:55:130
8714998315,56cyclictest0-21swapper/008:20:140
8714998315,56cyclictest0-21swapper/008:20:130
8714998314,58cyclictest0-21swapper/012:25:120
8714998314,57cyclictest0-21swapper/007:40:140
8714998314,54cyclictest0-21swapper/011:05:130
8714998312,58cyclictest0-21swapper/010:50:140
8714998312,57cyclictest0-21swapper/007:30:150
871499826,60cyclictest13909-21apt-get11:55:260
8714998215,57cyclictest0-21swapper/008:40:160
8714998215,54cyclictest0-21swapper/010:10:120
8714998214,56cyclictest0-21swapper/008:25:230
8714998213,56cyclictest0-21swapper/007:55:230
8718998139,29cyclictest26-21ksoftirqd/111:50:131
871499816,61cyclictest20938-21apt-get12:15:120
8714998115,56cyclictest0-21swapper/012:35:120
8714998115,52cyclictest0-21swapper/008:50:120
8714998115,52cyclictest0-21swapper/008:50:110
8714998115,52cyclictest0-21swapper/008:30:130
8714998113,56cyclictest0-21swapper/007:15:140
8714998113,55cyclictest0-21swapper/010:20:140
871499806,59cyclictest21209-21apt-get10:45:140
8714998015,55cyclictest0-21swapper/011:20:120
8714998014,55cyclictest0-21swapper/012:00:140
871499796,58cyclictest23769-21apt-get07:50:240
871499796,57cyclictest22699-21apt-get12:20:150
871499796,57cyclictest22699-21apt-get12:20:140
8714997922,50cyclictest448-21dbus-daemon10:30:050
8714997913,52cyclictest0-21swapper/007:25:140
830827919,50sleep00-21swapper/007:07:430
871899782,45cyclictest0-21swapper/112:35:341
871499788,56cyclictest0-21swapper/009:25:140
8714997830,41cyclictest250-21systemd-journal09:24:590
8714997817,52cyclictest0-21swapper/010:00:110
8714997813,55cyclictest0-21swapper/008:35:150
8714997812,55cyclictest0-21swapper/008:10:130
8714997713,54cyclictest0-21swapper/009:50:130
8714997712,53cyclictest0-21swapper/010:25:140
871499765,64cyclictest0-21swapper/011:10:220
8718997536,27cyclictest26-21ksoftirqd/109:45:101
8714997525,44cyclictest1014-21grep08:15:290
871499747,53cyclictest31706-21apt-get11:15:120
871899732,51cyclictest0-21swapper/107:55:331
8714997316,48cyclictest4764-21/usr/sbin/munin11:30:180
75512730,6sleep10-21swapper/107:05:201
8718997228,37cyclictest8138-21apt-key11:40:021
8718997131,34cyclictest19845-21diskmemload09:10:211
8718996938,18cyclictest26-21ksoftirqd/112:05:151
871899693,37cyclictest0-21swapper/111:20:201
8718996928,34cyclictest32653-21latency_hist08:15:011
8718996828,21cyclictest26253-21cron11:00:001
8718996827,21cyclictest11073-21latency_hist08:45:001
8718996740,21cyclictest28216-21strings08:00:281
8718996729,31cyclictest13890-21unixbench_multi07:20:361
8718996638,22cyclictest250-21systemd-journal12:24:421
8718996638,22cyclictest250-21systemd-journal12:24:411
8718996638,22cyclictest23279-21runrttasks10:50:191
8718996637,23cyclictest4621-21ethtool08:25:331
8718996636,23cyclictest250-21systemd-journal07:15:021
8718996635,24cyclictest12988-21apt-get08:50:121
8718996635,24cyclictest12988-21apt-get08:50:121
8718996628,32cyclictest15849-21apt-key10:30:051
8718996536,23cyclictest500-21snmpd07:26:061
8718996530,29cyclictest16283-21cron09:00:011
8718996526,33cyclictest7444-21needreboot10:05:301
8718996439,19cyclictest1-21systemd10:38:591
8718996437,22cyclictest548-21runrttasks09:15:301
8718996437,20cyclictest20109-21aten2.4_r3power07:40:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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