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2025-11-02 - 05:47
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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 Sun Nov 02, 2025 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1610499320,0cyclictest0-21swapper/023:30:170
1610499310,2cyclictest303-21systemd-journal00:25:010
16111992927,1cyclictest32463-21perf00:20:013
1611199290,28cyclictest0-21swapper/319:50:133
16109992928,1cyclictest31481-21apt-get22:00:132
16109992927,1cyclictest7330-21cron00:35:012
16109992927,1cyclictest303-21systemd-journal19:35:012
16105992927,1cyclictest0-21swapper/120:00:011
16105992926,2cyclictest7910-21awk21:10:001
1610599290,28cyclictest10487-21apt-get21:15:131
1610599290,28cyclictest0-21swapper/100:15:151
16104992927,2cyclictest0-21swapper/000:00:130
16104992927,1cyclictest10231-21munin-run21:15:000
1610499290,28cyclictest3514-21apt-get21:00:140
1610499290,28cyclictest30104-21cron00:15:010
1610499290,28cyclictest0-21swapper/022:30:130
1610499290,28cyclictest0-21swapper/020:35:140
16111992828,0cyclictest0-21swapper/320:05:023
16111992826,1cyclictest0-21swapper/320:00:013
1611199280,28cyclictest0-21swapper/320:45:123
16109992827,1cyclictest10235-21apt-get20:05:152
16109992826,2cyclictest3480-21sh22:10:012
1610999280,27cyclictest0-21swapper/223:35:142
1610999280,0cyclictest2295-21apt-get23:15:122
1610999280,0cyclictest0-21swapper/200:10:142
16105992828,0cyclictest0-21swapper/100:10:141
16105992826,1cyclictest7325-21sh00:35:011
16105992826,1cyclictest23036-21perf00:00:011
1610599280,27cyclictest16298-21apt-get23:45:121
16104992828,0cyclictest0-21swapper/019:55:140
16104992826,2cyclictest0-21swapper/021:45:130
1610499280,27cyclictest0-21swapper/022:15:130
1610499280,0cyclictest32672-21apt-get19:45:150
1610499280,0cyclictest0-21swapper/021:25:130
16111992727,0cyclictest0-21swapper/322:25:133
1611199270,0cyclictest30349-21apt-get19:40:163
16109992726,0cyclictest16351-21apt-get19:10:132
1610999270,27cyclictest0-21swapper/200:00:012
1610999270,0cyclictest0-21swapper/221:15:132
16105992725,1cyclictest27717-21awk19:35:011
1610599270,0cyclictest0-21swapper/120:25:131
16104992727,0cyclictest0-21swapper/023:25:120
16104992727,0cyclictest0-21swapper/021:20:130
16104992727,0cyclictest0-21swapper/020:55:120
16104992727,0cyclictest0-21swapper/019:35:140
16104992727,0cyclictest0-21swapper/000:35:160
16104992722,4cyclictest25755-21apt-get00:05:140
1610499270,27cyclictest0-21swapper/023:05:140
1610499270,0cyclictest0-21swapper/021:50:130
1610499270,0cyclictest0-21swapper/019:50:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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