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2024-05-27 - 18:50
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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 Mon May 27, 2024 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
152502321212,97sleep30-21swapper/33
156932304190,28sleep20-21swapper/22
162582265178,71sleep00-21swapper/00
163242258180,43sleep10-21swapper/11
1721121460,2sleep00-21swapper/00
1721121270,15sleep01675099cyclictest0
319162550,4sleep20-21swapper/22
260332500,1sleep30-21swapper/33
14992440,1sleep10-21swapper/11
279002390,2sleep10-21swapper/11
239382370,1sleep20-21swapper/22
16750993514,18cyclictest24145-21cat0
16750993412,4cyclictest13487-21cut0
16750993313,3cyclictest21276-21wc0
16750993312,3cyclictest11500-21cat0
1675099322,12cyclictest30072-21grep0
1675099320,29cyclictest505-21dbus-daemon0
16750993114,14cyclictest32197-21kernelversion0
16750993113,3cyclictest21247-21sh0
16750993113,15cyclictest29729-21aten2_r9power_v0
16750993011,3cyclictest2725-21seq0
16750993010,4cyclictest2275-21grep0
16750992912,4cyclictest17123-21seq0
16750992912,3cyclictest1500-21cat0
16750992911,4cyclictest28260-21cat0
16750992911,3cyclictest27263-21perf0
1675099289,3cyclictest7862-21cat0
16750992814,3cyclictest7231-21/usr/sbin/munin0
16750992810,4cyclictest21717-21cpuspeed0
16750992810,3cyclictest29237-21seq0
1675799277,3cyclictest0-21swapper/22
16757992723,2cyclictest27265-21cron2
16750992713,3cyclictest665-21runrttasks0
16750992713,3cyclictest25629-21/usr/sbin/munin0
1675099271,15cyclictest9255-21apt-get0
1675799262,5cyclictest5224-21apt-get2
1675099262,7cyclictest3206-21apt-get0
1675099251,7cyclictest11421-21apt-get0
16750992512,2cyclictest665-21runrttasks0
16750992511,3cyclictest10391-21timerwakeupswit0
16750992510,2cyclictest27676-21grep0
316272240,3sleep21675799cyclictest2
16761992415,5cyclictest31545-21apt-get3
16755992415,5cyclictest31545-21apt-get1
16750992411,3cyclictest665-21runrttasks0
16750992411,3cyclictest665-21runrttasks0
16750992411,2cyclictest7510-21/usr/sbin/munin0
16750992411,2cyclictest665-21runrttasks0
16750992410,3cyclictest665-21runrttasks0
16750992410,3cyclictest665-21runrttasks0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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