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2025-12-03 - 15:53
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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 Wed Dec 03, 2025 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1700991007,62cyclictest18866-21apt-get11:00:130
124329914,39sleep00-21swapper/007:07:040
1700999464,16cyclictest0-21swapper/009:45:140
1700998844,35cyclictest14-21ksoftirqd/008:40:140
1700998719,58cyclictest0-21swapper/007:40:110
170099868,67cyclictest6324-21apt-get11:55:140
1700998616,56cyclictest0-21swapper/008:05:120
1700998615,58cyclictest0-21swapper/009:40:130
1700998615,57cyclictest0-21swapper/010:30:130
1700998614,57cyclictest0-21swapper/009:00:130
1700998612,61cyclictest0-21swapper/009:10:140
61342850,8chrt0-21swapper/108:50:291
1700998514,56cyclictest0-21swapper/008:50:140
1706998414,58cyclictest1692-21cyclictest08:25:141
170099847,66cyclictest27633-21apt-get11:25:120
170099847,63cyclictest3097-21apt-get10:15:130
170099847,63cyclictest29070-21apt-get08:25:120
1700998454,18cyclictest14-21ksoftirqd/012:35:140
1700998415,58cyclictest0-21swapper/010:50:140
1700998414,56cyclictest0-21swapper/010:00:150
1700998413,57cyclictest0-21swapper/012:20:140
1700998412,58cyclictest0-21swapper/012:15:240
1700998316,52cyclictest0-21swapper/010:20:110
1700998315,61cyclictest0-21swapper/009:25:220
1700998314,57cyclictest0-21swapper/009:15:140
170099827,61cyclictest17161-21apt-get12:25:130
170099826,61cyclictest15950-21apt-get09:20:150
1700998213,60cyclictest0-21swapper/008:35:130
170099817,61cyclictest3677-21apt-get08:45:130
170099816,64cyclictest8083-21apt-get12:00:120
170099816,63cyclictest1354-21apt-get10:10:130
1700998114,58cyclictest0-21swapper/011:15:160
1700998113,60cyclictest0-21swapper/010:55:140
170099807,62cyclictest4053-21apt-get07:15:220
170099807,60cyclictest6106-21apt-get07:20:250
170099806,60cyclictest18115-21apt-get07:52:400
1700998050,18cyclictest14-21ksoftirqd/012:30:150
170099803,71cyclictest254-21systemd-journal11:39:460
1700998017,53cyclictest0-21swapper/011:10:110
170099796,61cyclictest1785-21apt-get07:10:150
170099796,59cyclictest11614-21apt-get12:10:130
1700997949,20cyclictest14-21ksoftirqd/012:05:190
1700997918,51cyclictest0-21swapper/011:30:140
1700997918,51cyclictest0-21swapper/008:55:150
1700997912,55cyclictest0-21swapper/010:25:140
170099787,60cyclictest30810-21apt-get08:30:140
170099785,66cyclictest12229-21df_inode10:40:230
1700997848,18cyclictest0-21swapper/009:55:150
1700997821,51cyclictest13788-21aten2.4-expect10:45:190
1700997818,48cyclictest0-21swapper/007:55:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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