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2025-11-03 - 10:49
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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 rack8slot4.osadl.org (updated Mon Nov 03, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11622662231175,17sleep10-21swapper/119:05:271
11643052225172,17sleep00-21swapper/019:06:550
11622722223166,18sleep50-21swapper/519:05:315
11644812221187,22sleep40-21swapper/419:09:244
11643642217187,19sleep70-21swapper/719:07:427
11644802211182,18sleep30-21swapper/319:09:233
11644832209175,22sleep60-21swapper/619:09:266
11642892207173,21sleep20-21swapper/219:06:412
1164727993432,1cyclictest0-21swapper/100:20:001
1164745993230,1cyclictest1225069-21sh21:00:016
1164736993225,6cyclictest1254724-21debian-sa121:55:003
1164736993225,6cyclictest1197914-21awk20:10:003
116474299310,29cyclictest1219435-21turbostat.cron20:50:015
116473299310,30cyclictest1309119-21cron23:35:002
116474899300,29cyclictest0-21swapper/721:16:027
116474599300,29cyclictest1339586-21apt-get00:31:016
116474599300,29cyclictest1243947-21sh21:35:016
116474299300,1cyclictest1315270-21apt-get23:46:035
116474099300,29cyclictest1214034-21cron20:40:004
116474099300,29cyclictest0-21swapper/419:16:004
116473699300,29cyclictest1230475-21apt21:10:013
116473699300,29cyclictest0-21swapper/322:20:003
116473299300,29cyclictest0-21swapper/222:10:002
1164727993028,1cyclictest1241265-21idleruntime-cro21:30:011
116472799300,29cyclictest1203768-21apt-get20:21:021
116472299300,29cyclictest1186880-21awk19:50:000
116472299300,29cyclictest1168470-21chrt19:16:000
116472299300,29cyclictest0-21swapper/020:40:000
116474899290,1cyclictest1208661-21idleruntime-cro20:30:007
1164745992927,1cyclictest1276758-21apt-get22:36:006
1164745992927,1cyclictest1274075-21apt-get22:31:066
116474599290,28cyclictest1230965-21apt-get21:10:596
116474599290,1cyclictest1314793-21munin-run23:45:006
1164742992927,1cyclictest1309117-21sh23:35:005
116474299290,28cyclictest1179245-21apt-get19:35:595
116474299290,28cyclictest0-21swapper/523:51:015
116474299290,28cyclictest0-21swapper/522:51:005
1164736992927,2cyclictest0-21swapper/323:01:003
1164736992927,1cyclictest1296143-21apt-get23:11:023
1164736992927,1cyclictest0-21swapper/323:35:003
1164736992927,1cyclictest0-21swapper/320:50:013
116473699290,28cyclictest0-21swapper/323:40:593
116473699290,1cyclictest1341789-21dump-pmu-power00:35:003
1164732992927,1cyclictest0-21swapper/222:45:012
1164732992927,1cyclictest0-21swapper/222:11:012
1164732992927,1cyclictest0-21swapper/221:10:592
1164732992927,1cyclictest0-21swapper/220:10:592
116473299290,28cyclictest0-21swapper/220:51:002
116473299290,28cyclictest0-21swapper/220:46:032
116473299290,28cyclictest0-21swapper/219:31:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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