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2026-06-13 - 09:51
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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 Sat Jun 13, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14250999515,16cyclictest0-21swapper/023:50:120
14250999416,16cyclictest0-21swapper/019:45:110
14250999414,17cyclictest0-21swapper/023:00:120
14250999414,17cyclictest0-21swapper/023:00:120
14250999315,17cyclictest0-21swapper/023:45:110
14250999314,18cyclictest0-21swapper/020:05:130
1374729325,16sleep10-21swapper/119:06:401
14250999215,17cyclictest0-21swapper/021:30:120
14250999214,21cyclictest0-21swapper/022:15:130
14250999213,17cyclictest0-21swapper/023:25:120
14250999213,16cyclictest0-21swapper/023:20:120
14250999116,17cyclictest0-21swapper/022:45:120
247872900,6chrt24786-21sshd19:36:250
247872900,6chrt24786-21sshd19:36:250
14250999015,17cyclictest0-21swapper/022:10:120
14250999014,18cyclictest0-21swapper/020:50:100
14250999014,18cyclictest0-21swapper/020:50:100
14250999014,17cyclictest0-21swapper/020:55:140
1405829017,32sleep00-21swapper/019:09:290
91352890,7sleep19136-21latency_hist23:30:001
14250998915,19cyclictest0-21swapper/020:00:140
14250998915,19cyclictest0-21swapper/000:05:180
14250998915,17cyclictest0-21swapper/000:25:130
14250998914,18cyclictest0-21swapper/022:40:110
14255998821,23cyclictest23357-21cat21:05:221
14250998814,18cyclictest0-21swapper/022:05:120
14250998814,18cyclictest0-21swapper/022:05:120
14250998814,17cyclictest0-21swapper/020:35:240
14250998814,17cyclictest0-21swapper/019:10:120
14250998814,17cyclictest0-21swapper/000:35:130
14250998813,18cyclictest0-21swapper/021:00:140
14250998812,17cyclictest0-21swapper/023:35:140
14250998714,18cyclictest0-21swapper/000:20:140
14250998714,16cyclictest0-21swapper/021:25:100
14250998713,18cyclictest0-21swapper/022:30:090
14250998711,21cyclictest18084-21taskset23:55:120
14250998614,17cyclictest0-21swapper/020:30:120
14250998612,17cyclictest0-21swapper/019:30:120
14250998611,21cyclictest198882chrt00:00:160
14250998515,17cyclictest0-21swapper/019:25:130
14250998514,17cyclictest0-21swapper/021:05:150
14250998415,17cyclictest0-21swapper/023:10:100
1425599838,23cyclictest10431-21apt-get20:30:121
14250998234,41cyclictest14-21ksoftirqd/020:10:100
1425099815,42cyclictest0-21swapper/022:20:260
14250998110,22cyclictest24627-21diskmemload21:10:130
1425599806,23cyclictest20080-21apt-get19:25:131
14255998035,38cyclictest26-21ksoftirqd/122:19:261
1425099803,22cyclictest11463-21taskset22:05:000
1425599795,25cyclictest18081-21apt-get23:55:121
14255997921,17cyclictest5394-21sshd23:17:281
1425099792,46cyclictest26982-21wc19:45:010
14250997914,17cyclictest0-21swapper/020:20:110
1425599785,18cyclictest14321-21apt-get19:10:101
1425599784,22cyclictest16341-21apt-get23:50:111
14255997825,16cyclictest1213-21cut21:35:161
14255997818,20cyclictest15342-21sed20:40:351
1425599776,22cyclictest26534-21apt-get21:15:131
1425599776,20cyclictest18654-21apt-get22:25:131
14255997721,16cyclictest29722-21grep00:25:351
14250997715,31cyclictest243-21systemd-journal19:16:270
14250997715,31cyclictest243-21systemd-journal19:16:270
1425599757,22cyclictest6946-21apt-get20:20:111
1425599753,20cyclictest20389-21apt-get22:30:101
1425599746,22cyclictest5829-21apt-get23:20:121
1425599745,22cyclictest16023-21apt-get20:45:131
1425599735,20cyclictest31221-21apt-get23:00:121
1425599735,20cyclictest31221-21apt-get23:00:121
14255997330,17cyclictest26-21ksoftirqd/122:48:231
14255997321,18cyclictest457-21dbus-daemon19:33:201
1425599725,22cyclictest24793-21apt-get21:10:141
1425599725,21cyclictest23558-21apt-get19:35:131
1425599725,21cyclictest23558-21apt-get19:35:121
1425599724,22cyclictest21623-21apt-get00:05:171
1425599722,9cyclictest885-21apache200:00:041
14255997214,13cyclictest9837-21awk20:25:361
14250997213,52cyclictest0-21swapper/019:55:120
1425599715,22cyclictest1654-21apt-get20:05:131
1425599715,20cyclictest31775-21apt-get21:30:121
14255997125,18cyclictest26-21ksoftirqd/123:06:091
1425599706,20cyclictest11050-21apt-get23:35:141
1425599705,16cyclictest26-21ksoftirqd/122:11:261
1425599704,21cyclictest14603-21apt-get23:45:121
14250997014,15cyclictest0-21swapper/022:50:120
1425599696,22cyclictest21262-21apt-get21:00:141
1425599696,17cyclictest26-21ksoftirqd/122:38:491
1425599688,19cyclictest12470-21apt-get20:35:241
1425599688,18cyclictest26-21ksoftirqd/122:08:141
1425599688,18cyclictest26-21ksoftirqd/122:08:141
1425599686,20cyclictest30030-21apt-get21:25:101
1425599686,20cyclictest2898-21apt-get21:40:141
1425599684,18cyclictest27106-21apt-get19:45:111
14255996824,18cyclictest26-21ksoftirqd/122:57:221
14250996813,49cyclictest0-21swapper/022:55:140
1425599676,20cyclictest32117-21apt-get00:35:131
1425599675,21cyclictest19504-21apt-get20:55:141
1425599673,30cyclictest3446-21runrttasks20:10:111
1425599673,19cyclictest2323-21apt-get23:10:101
14255996710,9cyclictest151rcu_preempt19:20:511
1425599666,21cyclictest26905-21apt-get00:20:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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