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2025-12-25 - 19:06
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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 50 highest latencies:
System rackeslot5.osadl.org (updated Thu Dec 25, 2025 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2534993410,11cyclictest0-21swapper/108:07:561
253499310,30cyclictest17694-21cron10:00:001
253799300,29cyclictest307-21systemd-journal12:05:002
253499300,29cyclictest28503-21awk08:05:011
2541992927,1cyclictest621-21dbus-daemon07:35:023
2541992927,1cyclictest26412-21perf09:10:013
254199290,28cyclictest0-21swapper/308:50:113
2537992928,1cyclictest0-21swapper/208:10:132
253799290,28cyclictest0-21swapper/209:25:122
253799290,28cyclictest0-21swapper/208:40:112
2534992928,1cyclictest621-21dbus-daemon12:15:021
253499290,28cyclictest0-21swapper/111:05:111
253499290,28cyclictest0-21swapper/107:35:121
2541992828,0cyclictest30442-21apt-get11:35:123
2541992826,1cyclictest5498-21munin-run08:25:013
254199280,28cyclictest0-21swapper/311:50:143
254199280,27cyclictest0-21swapper/311:10:113
254199280,0cyclictest0-21swapper/311:55:123
2537992828,0cyclictest0-21swapper/209:30:132
2537992826,1cyclictest18512-21cron11:10:002
253799280,28cyclictest0-21swapper/210:35:112
253799280,28cyclictest0-21swapper/207:55:102
253799280,0cyclictest0-21swapper/211:10:112
2534992828,0cyclictest0-21swapper/107:25:121
2534992827,1cyclictest0-21swapper/111:15:011
253499280,0cyclictest10692-21apt-get09:45:121
2531992828,0cyclictest24123-21apt-get07:55:110
2531992828,0cyclictest2203-21apt-get10:35:100
2531992828,0cyclictest0-21swapper/012:00:140
253199280,0cyclictest0-21swapper/011:15:140
253199280,0cyclictest0-21swapper/009:30:140
2541992727,0cyclictest14411-21apt-get07:35:123
2541992727,0cyclictest0-21swapper/311:05:123
2541992727,0cyclictest0-21swapper/308:00:133
2537992727,0cyclictest4555-21apt-get10:40:112
2537992727,0cyclictest0-21swapper/210:25:112
2537992727,0cyclictest0-21swapper/207:10:102
253799270,27cyclictest0-21swapper/208:05:102
253799270,0cyclictest0-21swapper/211:15:122
2534992727,0cyclictest0-21swapper/107:30:151
2534992726,1cyclictest14168-21apt-get11:00:131
253499270,0cyclictest0-21swapper/109:31:201
253499270,0cyclictest0-21swapper/109:10:111
253499270,0cyclictest0-21swapper/109:05:101
2531992727,0cyclictest29612-21apt-get10:25:110
2531992727,0cyclictest0-21swapper/008:10:130
2531992727,0cyclictest0-21swapper/008:05:110
253199270,0cyclictest0-21swapper/012:20:130
2541992626,0cyclictest0-21swapper/312:35:013
2541992626,0cyclictest0-21swapper/311:30:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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