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2026-03-15 - 05:54
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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 Sun Mar 15, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1776222270,13sleep126-21ksoftirqd/119:10:011
1776222270,13sleep126-21ksoftirqd/119:10:011
1681329526,19sleep00-21swapper/019:05:250
1681329526,19sleep00-21swapper/019:05:240
17842998758,17cyclictest26-21ksoftirqd/122:30:111
1784299867,69cyclictest32438-21apt-get19:50:111
17842998614,57cyclictest0-21swapper/100:25:141
1784299857,64cyclictest25414-21apt-get19:30:141
17842998517,55cyclictest0-21swapper/120:50:131
1784299848,64cyclictest32523-21apt-get22:50:161
1784299828,64cyclictest12672-21apt-get23:25:111
1784299826,66cyclictest32321-21apt-get00:20:131
17842998216,52cyclictest0-21swapper/121:05:131
17842998214,54cyclictest0-21swapper/123:45:121
17842998153,17cyclictest26-21ksoftirqd/100:15:131
17842998150,20cyclictest26-21ksoftirqd/123:50:131
17842998117,53cyclictest0-21swapper/120:30:141
1784299808,57cyclictest23675-21apt-get19:25:161
1784299808,57cyclictest23675-21apt-get19:25:151
17842998049,20cyclictest26-21ksoftirqd/120:20:241
17842998049,20cyclictest26-21ksoftirqd/120:20:241
17842998018,48cyclictest0-21swapper/119:20:131
17842998015,54cyclictest0-21swapper/119:55:131
17842998015,53cyclictest0-21swapper/121:20:111
17842998014,53cyclictest0-21swapper/121:35:141
17842998014,52cyclictest0-21swapper/100:10:131
1783899808,12cyclictest0-21swapper/020:45:110
1784299796,61cyclictest10931-21apt-get23:20:131
17842997917,48cyclictest0-21swapper/121:30:141
17842997915,52cyclictest0-21swapper/120:05:231
17842997914,54cyclictest0-21swapper/100:05:231
1784299787,58cyclictest9175-21apt-get23:15:171
1784299787,58cyclictest14071-21apt-get22:00:131
1784299787,56cyclictest5110-21apt-get00:35:151
1784299786,57cyclictest3370-21apt-get00:30:111
17842997816,52cyclictest0-21swapper/120:55:131
17842997814,51cyclictest0-21swapper/119:40:131
17842997814,51cyclictest0-21swapper/100:00:141
1784299776,59cyclictest13187-21apt-get20:25:141
17842997718,49cyclictest0-21swapper/122:35:231
17842997716,52cyclictest0-21swapper/123:30:121
17842997715,50cyclictest0-21swapper/120:00:211
17842997715,50cyclictest0-21swapper/119:10:141
1784299767,55cyclictest21408-21apt-get22:20:231
1784299767,52cyclictest23183-21apt-get23:55:121
1784299766,58cyclictest5337-21apt-get23:05:121
17842997616,48cyclictest0-21swapper/123:00:151
17842997616,47cyclictest0-21swapper/121:00:121
17842997616,47cyclictest0-21swapper/121:00:111
17842997615,48cyclictest0-21swapper/122:25:141
17842997613,53cyclictest0-21swapper/122:15:141
17842997613,51cyclictest0-21swapper/120:35:131
1784299758,51cyclictest1830-21apt-get22:55:101
1784299757,55cyclictest30730-21apt-get21:15:141
1784299757,52cyclictest20224-21apt-get20:45:111
1784299756,54cyclictest30782-21apt-get22:45:101
1784299755,64cyclictest0-21swapper/121:10:051
17842997525,43cyclictest250-21systemd-journal20:40:151
17842997525,43cyclictest250-21systemd-journal20:40:151
17842997515,46cyclictest0-21swapper/121:55:131
17842997512,51cyclictest0-21swapper/119:15:141
1784299746,54cyclictest17599-21apt-get22:10:111
1784299746,52cyclictest30703-21apt-get19:45:141
1784299746,52cyclictest27152-21apt-get19:35:121
1784299746,51cyclictest15810-21apt-get22:05:121
17842997312,47cyclictest0-21swapper/122:40:211
1784299727,51cyclictest17969-21apt-get23:40:121
1784299725,63cyclictest0-21swapper/123:10:321
1784299723,61cyclictest9836-21sed21:45:351
1784299717,50cyclictest7646-21apt-get20:10:131
1784299717,50cyclictest10572-21apt-get21:50:111
1784299716,50cyclictest9384-21apt-get20:15:131
17842997115,50cyclictest448-21dbus-daemon23:40:011
1783899716,54cyclictest5287-21apt-get21:35:120
1784299706,50cyclictest1803-21apt-get21:25:141
17838996920,11cyclictest26934-21apt-get22:35:240
17838996918,44cyclictest0-21swapper/023:40:120
1784299683,56cyclictest7660-21missed_timers21:40:251
17838996824,37cyclictest21269-21cron23:50:000
223522670,6sleep00-21swapper/022:20:440
1783899677,19cyclictest5853-21apt-get20:05:220
17838996737,19cyclictest14-21ksoftirqd/021:45:120
135142670,6chrt0-21swapper/023:25:330
1783899666,50cyclictest3541-21apt-get21:30:120
17838996611,26cyclictest0-21swapper/021:15:310
17838996611,25cyclictest0-21swapper/022:50:290
17838996610,26cyclictest0-21swapper/022:30:300
238612650,21sleep0171rcuc/020:55:170
17838996124,32cyclictest27311-21aten2.4-expect19:35:170
17838996022,26cyclictest14-21ksoftirqd/022:05:130
17838996020,16cyclictest11059-21aten2.4-expect23:20:160
17838995912,13cyclictest14-21ksoftirqd/021:05:190
1783899585,13cyclictest151rcu_preempt20:25:210
1783899584,14cyclictest151rcu_preempt00:10:300
17838995836,18cyclictest14-21ksoftirqd/023:35:160
1783899583,48cyclictest32139-21awk00:20:010
17838995828,24cyclictest23788-21cat23:55:250
1783899577,37cyclictest151rcu_preempt23:50:200
1783899576,39cyclictest151rcu_preempt19:55:200
1783899573,48cyclictest21989-21basename19:20:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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