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2025-04-02 - 08:27
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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 rack9slot2.osadl.org (updated Wed Apr 02, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20312308270,25sleep00-21swapper/00
21622260203,44sleep20-21swapper/22
253999250246,2cyclictest0-21swapper/33
20272234195,26sleep10-21swapper/11
253399233226,5cyclictest0-21swapper/22
22762230181,36sleep30-21swapper/33
252699198193,3cyclictest0-21swapper/00
253299173167,3cyclictest9590-21apt-get1
1812021610,3sleep3253999cyclictest3
221902570,1sleep30-21swapper/33
19252490,2sleep30-21swapper/33
132672460,1sleep00-21swapper/00
129052410,1sleep00-21swapper/00
11832410,1sleep00-21swapper/00
2539992714,3cyclictest293922ls3
56362260,3sleep35641-21pmu-power3
2533992317,4cyclictest16391-21sed2
253399231,4cyclictest4748-21munin-run2
253399231,20cyclictest6053-21cups-browsed2
253399231,19cyclictest2176-21munin-run2
2533992311,11cyclictest28-21ksoftirqd/22
253399230,21cyclictest7102-21kworker/2:02
2526992317,4cyclictest3328-21ntpq0
2526992317,3cyclictest25640-21cron0
2526992317,3cyclictest25640-21cron0
253399229,11cyclictest22708-21apt-get2
253399223,17cyclictest4455-21sendmail2
253399223,17cyclictest24395-21df2
253399223,17cyclictest12931-21cat2
253399221,3cyclictest13039-21users2
253399221,18cyclictest17790-21munin-run2
252699229,11cyclictest0-21swapper/00
2526992215,4cyclictest30572-21idleruntime-cro0
2539992112,5cyclictest505-21dbus-daemon3
253999211,16cyclictest22719-21run-parts3
253399216,13cyclictest11359-21latency_hist2
253399213,17cyclictest13699-21cut2
2533992116,3cyclictest6772-21munin-run2
2533992116,3cyclictest6772-21munin-run2
2533992116,3cyclictest14784-21idleruntime-cro2
2533992115,3cyclictest31538-21latency2
253399211,3cyclictest505-21dbus-daemon2
253399211,2cyclictest19041-21apt-get2
253399211,18cyclictest27728-21munin-run2
253399211,18cyclictest23618-21cstates2
253399210,3cyclictest14026-21munin-run2
253399210,2cyclictest20711-21munin-run2
253299218,10cyclictest20792-21dump-pmu-power1
2532992115,4cyclictest1929-21seq1
2532992115,4cyclictest18778-21cron1
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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