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2025-11-02 - 21:14
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Sun Nov 02, 2025 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2006621150,7chrt20069-21switchtime08:00:351
651999779,11cyclictest14-21ksoftirqd/010:50:150
651999016,60cyclictest0-21swapper/011:50:160
651998915,61cyclictest0-21swapper/010:45:170
651998818,57cyclictest0-21swapper/008:20:160
651998817,59cyclictest0-21swapper/008:00:130
651998814,60cyclictest0-21swapper/007:40:160
3275428828,48sleep10-21swapper/107:08:281
65199878,63cyclictest11396-21apt-get09:10:140
651998715,61cyclictest0-21swapper/011:20:260
651998516,60cyclictest0-21swapper/009:40:140
651998514,59cyclictest0-21swapper/010:00:130
651998512,60cyclictest0-21swapper/011:05:130
651998420,57cyclictest20551-21aten2.4-expect09:35:180
651998417,54cyclictest0-21swapper/011:55:140
651998417,53cyclictest0-21swapper/009:00:140
651998414,61cyclictest0-21swapper/010:15:250
651998412,59cyclictest0-21swapper/011:35:140
65199838,10cyclictest0-21swapper/011:00:420
651998332,41cyclictest24593-21grep09:45:290
651998314,54cyclictest0-21swapper/012:15:170
651998219,56cyclictest2874-21aten2.4-expect11:45:200
651998216,54cyclictest0-21swapper/012:10:130
651998216,54cyclictest0-21swapper/012:10:120
651998212,55cyclictest0-21swapper/008:45:180
651998211,62cyclictest0-21swapper/008:35:140
65199816,18cyclictest20937-21apt-get08:05:130
651998119,53cyclictest254-21systemd-journal12:39:000
651998112,56cyclictest0-21swapper/012:00:150
65199809,58cyclictest16969-21apt-get10:55:160
651998020,51cyclictest17736-21grep09:25:350
651998017,53cyclictest0-21swapper/010:10:140
65199798,21cyclictest29537-21apt-get11:30:130
651997923,47cyclictest254-21systemd-journal11:18:330
651997923,46cyclictest254-21systemd-journal10:34:060
651997922,50cyclictest254-21systemd-journal10:39:060
651997922,49cyclictest487-21gdbus08:14:590
651997913,52cyclictest0-21swapper/007:30:250
651997910,55cyclictest17016-21apt-get12:25:270
65199786,22cyclictest24467-21apt-get08:15:150
65199786,20cyclictest6493-21apt-get07:25:140
651997821,48cyclictest254-21systemd-journal08:58:460
651997812,52cyclictest0-21swapper/009:05:140
65199778,21cyclictest15205-21apt-get09:20:240
65199777,23cyclictest28017-21apt-get08:25:130
65199777,20cyclictest2999-21apt-get07:15:160
65199776,20cyclictest4118-21apt-get10:20:160
65199775,19cyclictest22261-21apt-get11:10:170
651997722,47cyclictest12064-21sendmail-msp07:40:010
651997711,58cyclictest0-21swapper/010:05:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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