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2025-10-14 - 13:29
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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 Tue Oct 14, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
801993434,0cyclictest4002-21munin-run20:25:001
815993126,3cyclictest0-21swapper/300:00:133
815993126,3cyclictest0-21swapper/300:00:133
81599301,28cyclictest21366-21cron23:30:013
801993028,2cyclictest21774-21kworker/u8:221:55:011
801993027,2cyclictest303-21systemd-journal19:30:011
815992927,1cyclictest4219-21cron21:45:003
81599290,28cyclictest30226-21munin-run22:40:013
81599290,1cyclictest25520-21cron22:30:013
809992927,1cyclictest3125-21perf19:15:012
80999290,28cyclictest0-21swapper/200:05:142
801992928,1cyclictest30746-21cron23:50:021
799992927,1cyclictest23180-21munin-run22:25:000
799992927,1cyclictest0-21swapper/023:35:010
79999290,28cyclictest25548-21perf22:30:010
79999290,28cyclictest0-21swapper/020:05:150
815992827,1cyclictest16701-21cron23:20:013
815992827,1cyclictest11893-21apt-get20:45:083
81599280,0cyclictest0-21swapper/323:20:133
81599280,0cyclictest0-21swapper/320:25:143
81599280,0cyclictest0-21swapper/319:10:133
809992828,0cyclictest22324-21apt-get19:55:142
809992828,0cyclictest11796-21apt-get22:00:132
809992827,1cyclictest12721-21cron19:35:012
80999280,27cyclictest7700-21apt-get23:00:122
80999280,0cyclictest28142-21apt-get22:35:122
80999280,0cyclictest0-21swapper/220:45:082
80999280,0cyclictest0-21swapper/219:50:172
80999280,0cyclictest0-21swapper/219:25:132
80999280,0cyclictest0-21swapper/200:00:142
80999280,0cyclictest0-21swapper/200:00:142
801992828,0cyclictest10680-21apt-get19:30:151
80199280,28cyclictest0-21swapper/121:16:531
80199280,27cyclictest0-21swapper/122:10:121
80199280,0cyclictest0-21swapper/123:15:121
799992826,2cyclictest30782-21perf23:50:010
799992826,1cyclictest14783-21cron00:25:000
815992727,0cyclictest0-21swapper/323:45:013
815992727,0cyclictest0-21swapper/321:25:123
815992727,0cyclictest0-21swapper/300:25:133
809992727,0cyclictest0-21swapper/223:40:132
80999270,0cyclictest12345-21apt-get23:10:132
80999270,0cyclictest0-21swapper/223:45:102
80999270,0cyclictest0-21swapper/223:25:132
80999270,0cyclictest0-21swapper/221:40:022
80999270,0cyclictest0-21swapper/200:00:012
801992727,0cyclictest4261-21apt-get20:25:141
801992727,0cyclictest0-21swapper/123:50:141
801992726,1cyclictest28429-21awk23:45:001
801992725,1cyclictest13857-21munin-run22:05:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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