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2026-04-05 - 22:03
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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 rackbslot7.osadl.org (updated Sun Apr 05, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145539912163,52cyclictest277-21dbus-daemon10:13:490
145619910965,37cyclictest27441-21sh11:54:102
145619910965,37cyclictest27441-21sh11:54:102
14553991094,31cyclictest2330-21cat10:18:510
14553991094,31cyclictest2330-21cat10:18:510
145539910552,47cyclictest28522-21rm09:14:090
994321040,9sleep30-21swapper/310:30:273
145539910441,55cyclictest0-21swapper/007:38:490
145539910238,57cyclictest0-21swapper/009:19:110
14553991003,41cyclictest26569-21cpuspeed10:59:040
14553991002,27cyclictest18259-21sort11:38:570
145539910010,34cyclictest22782-21/usr/sbin/munin09:59:240
1455399993,31cyclictest352-21runrttasks11:18:280
1455399993,31cyclictest352-21runrttasks11:18:280
1455399993,27cyclictest26243-21runrttasks09:09:230
14553999917,28cyclictest18146-21rm09:50:020
14561999853,37cyclictest0-21swapper/212:19:212
1455399984,15cyclictest20395-21awk09:54:160
1455399983,33cyclictest17882-21grep10:44:090
14558999737,36cyclictest19460-21kworker/u17:0-rpciod11:02:411
1455399974,34cyclictest8347-21cp10:28:500
1455399974,30cyclictest31415-21latency_hist07:53:510
1455399973,31cyclictest23493-21/usr/sbin/munin10:54:100
1455399973,21cyclictest14266-21cron10:38:470
1455399972,20cyclictest17978-21/usr/sbin/munin08:50:070
14561999656,34cyclictest19676-21snmpd11:08:512
1455399967,11cyclictest0-21swapper/012:04:010
1455399967,11cyclictest0-21swapper/012:04:010
1455399964,30cyclictest12487-21latency_hist12:23:510
1455399964,29cyclictest24877-21uname11:49:200
14553999615,23cyclictest15524-21sh12:28:560
14561999549,39cyclictest28072-21idleruntime-cro07:43:482
1455399954,37cyclictest352-21runrttasks10:04:040
1455399953,35cyclictest20600-21/usr/sbin/munin08:59:210
1455399953,31cyclictest29766-21grep11:04:100
1455399953,30cyclictest352-21runrttasks11:27:000
1455399953,26cyclictest8635-21apt-get10:29:060
1455399952,13cyclictest3657-21ssh12:09:010
1455899942,33cyclictest15074-21apt-get11:34:101
1455399945,30cyclictest23154-21latency_hist07:28:500
1455399945,30cyclictest23154-21latency_hist07:28:500
1455399944,29cyclictest19762-21threads08:54:220
1455399944,28cyclictest20930-21unixbench_multi07:19:240
1455399944,28cyclictest20930-21unixbench_multi07:19:240
14553999441,46cyclictest21970-21diskmemload11:34:450
1455399943,27cyclictest87-21kswapd007:03:520
1455399943,22cyclictest4776-21latency_hist09:28:520
14553999427,60cyclictest0-21swapper/010:23:500
14553999427,60cyclictest0-21swapper/009:34:230
14553999427,60cyclictest0-21swapper/009:34:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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