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2026-04-14 - 09:23
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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 Tue Apr 14, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
848211288,12sleep10-21swapper/119:05:261
1850999213,72cyclictest0-21swapper/000:15:130
1850998915,53cyclictest0-21swapper/023:35:130
1850998315,54cyclictest0-21swapper/021:35:220
1850998215,53cyclictest0-21swapper/000:20:140
1850998214,57cyclictest0-21swapper/023:40:130
1850998214,54cyclictest0-21swapper/000:25:130
1850998213,54cyclictest0-21swapper/019:45:130
185099816,62cyclictest2221-21apt-get20:40:130
1850998118,51cyclictest0-21swapper/021:05:130
1850998115,51cyclictest0-21swapper/019:30:140
1850998114,53cyclictest0-21swapper/000:30:140
1850998114,52cyclictest0-21swapper/019:35:130
185099808,61cyclictest18511-21apt-get19:55:150
185099807,63cyclictest27391-21apt-get21:50:220
185099806,63cyclictest19763-21apt-get21:30:150
185099806,63cyclictest19763-21apt-get21:30:150
185099806,63cyclictest10210-21apt-get00:05:130
185099806,59cyclictest17751-21apt-get22:55:120
1850998016,53cyclictest0-21swapper/020:00:120
1850998014,55cyclictest0-21swapper/023:20:130
185099797,60cyclictest23047-21apt-get23:10:140
185099797,58cyclictest12536-21apt-get22:40:140
1850997914,51cyclictest0-21swapper/022:05:130
1850997912,57cyclictest0-21swapper/020:55:130
185099786,61cyclictest21258-21apt-get23:05:140
1850997835,33cyclictest2240-21runrttasks19:10:080
185099783,48cyclictest20074-21memory23:00:260
1850997816,49cyclictest0-21swapper/021:55:140
1850997815,50cyclictest0-21swapper/021:10:140
1850997815,48cyclictest0-21swapper/021:40:150
1850997814,54cyclictest0-21swapper/019:20:110
1850997814,53cyclictest0-21swapper/022:35:140
185099777,54cyclictest14517-21apt-get21:15:140
1850997715,51cyclictest0-21swapper/023:15:140
1850997714,50cyclictest0-21swapper/020:35:240
1850997714,49cyclictest0-21swapper/020:10:100
1850997713,50cyclictest0-21swapper/023:45:160
185099769,61cyclictest12301-21apt-get00:10:120
185099767,59cyclictest27307-21apt-get20:20:130
185099766,59cyclictest13299-21apt-get19:40:120
185099766,58cyclictest30028-21apt-get23:30:130
185099766,58cyclictest30028-21apt-get23:30:130
185099763,38cyclictest8473-21irqstats19:25:230
1850997615,50cyclictest0-21swapper/022:50:130
1850997614,50cyclictest0-21swapper/021:01:420
185099757,56cyclictest5697-21apt-get20:50:150
185099757,54cyclictest18016-21apt-get21:25:140
185099752,67cyclictest6883-21chrt22:23:030
1850997517,44cyclictest0-21swapper/020:30:140
1850997514,47cyclictest0-21swapper/022:45:140
1850997513,50cyclictest0-21swapper/021:20:150
1850997512,52cyclictest503-21snmpd22:30:150
185099747,54cyclictest21023-21apt-get00:35:130
185099746,58cyclictest25351-21apt-get21:45:130
185099746,53cyclictest7243-21apt-get22:25:150
1850997414,50cyclictest0-21swapper/020:05:150
1850997414,49cyclictest0-21swapper/020:15:130
185099737,53cyclictest30893-21apt-get22:00:160
185099735,54cyclictest3740-21apt-get22:15:150
1850997315,45cyclictest0-21swapper/020:45:160
1850997314,45cyclictest0-21swapper/020:25:150
185099726,56cyclictest16776-21apt-get19:50:120
185099726,50cyclictest6674-21apt-get23:55:240
185099726,50cyclictest6674-21apt-get23:55:240
1850997213,46cyclictest0-21swapper/022:10:120
1850997213,46cyclictest0-21swapper/000:00:140
185099707,49cyclictest4637-21apt-get23:50:150
185099707,48cyclictest28286-21apt-get23:25:120
10932705,54sleep01242-21awk19:05:290
185099695,58cyclictest0-21swapper/019:15:180
1852996837,25cyclictest7256-21cron20:55:001
1852996635,25cyclictest18308-21seq22:55:251
1852996535,24cyclictest14598-21taskset00:15:251
1852996529,31cyclictest17612-21telnet00:25:151
1852996436,23cyclictest23612-21/usr/sbin/munin21:40:291
1852996433,25cyclictest4326-21cat22:15:271
1852996433,25cyclictest24149-21taskset20:10:191
1852996433,25cyclictest18992-21uname19:55:241
1852996433,23cyclictest16599-21latency_hist19:50:011
1852996334,24cyclictest4326-21munin-node19:15:061
1852996334,24cyclictest29695-21grep21:55:251
1852996334,23cyclictest29255-21wc23:25:351
1852996333,24cyclictest30601-21sed23:30:261
1852996333,24cyclictest30601-21sed23:30:261
1852996333,24cyclictest15935-21aten2.4_r3power00:20:171
1852996332,25cyclictest21800-21apt-get21:35:111
1852996331,27cyclictest7309-21aten2.4_r3power22:25:161
1852996331,26cyclictest13015-21uname22:40:241
1852996331,25cyclictest21240-21seq23:05:031
1852996328,29cyclictest8305-21apache200:00:031
1852996328,29cyclictest8305-21apache200:00:031
1852996236,21cyclictest10333-21aten2.4_r3power00:05:171
1852996235,21cyclictest26679-21users20:15:381
1852996235,21cyclictest10216-21taskset19:30:251
1852996234,23cyclictest5037-21grep20:45:371
1852996233,24cyclictest16110-21aten2.4-expect22:50:161
1852996233,23cyclictest17008-21ntpq21:20:301
1852996232,24cyclictest7726-21runrttasks19:23:571
1852996232,24cyclictest27652-21taskset20:20:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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