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2025-05-02 - 12:39
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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 Fri May 02, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36845032224191,21sleep70-21swapper/719:07:337
36824582223167,17sleep30-21swapper/319:06:003
36824292223170,17sleep10-21swapper/119:05:341
36845362222167,42sleep40-21swapper/419:08:024
36845072218188,19sleep20-21swapper/219:07:362
36844672213184,18sleep00-21swapper/019:07:010
36824422213181,20sleep50-21swapper/519:05:465
36846352206176,19sleep60-21swapper/619:09:166
368488999330,1cyclictest0-21swapper/623:21:306
368488999330,1cyclictest0-21swapper/621:00:016
3684871993230,1cyclictest0-21swapper/022:50:000
368488299310,29cyclictest3720748-21dump-pmu-power20:15:014
368487799310,30cyclictest3782655-21dump-pmu-power22:10:002
368487799310,29cyclictest0-21swapper/220:05:012
3684892993028,1cyclictest105-21kcompactd021:18:187
3684892993026,3cyclictest3718063-21ls20:10:017
368489299300,29cyclictest3782651-21idleruntime-cro22:10:007
368489299300,29cyclictest0-21swapper/720:01:267
368489299300,1cyclictest3848568-21apt-get00:11:297
368488799300,30cyclictest3753055-21dump-pmu-power21:15:015
368488299300,2cyclictest430883-21systemd-journal22:00:004
368487999300,29cyclictest3726662-21apt-get20:26:313
368487799300,29cyclictest0-21swapper/223:10:012
368487799300,29cyclictest0-21swapper/220:10:022
368487799300,1cyclictest0-21swapper/221:14:332
368487399300,29cyclictest3715670-21packagekitd20:05:011
368487199300,29cyclictest3777251-21cron22:00:000
368487199300,29cyclictest0-21swapper/020:15:010
3684892992927,1cyclictest3810355-21apt-get23:01:307
3684892992927,1cyclictest1-21systemd23:15:017
3684892992927,1cyclictest0-21swapper/723:21:307
368489299290,28cyclictest0-21swapper/722:46:297
368489299290,28cyclictest0-21swapper/720:51:327
368489299290,28cyclictest0-21swapper/719:53:227
368489299290,28cyclictest0-21swapper/719:53:227
368489299290,28cyclictest0-21swapper/700:26:297
368488999290,29cyclictest0-21swapper/622:48:066
368488999290,28cyclictest3804965-21apt-get22:51:316
368488999290,28cyclictest0-21swapper/622:06:326
368488999290,28cyclictest0-21swapper/600:00:016
368488999290,1cyclictest0-21swapper/621:56:306
368488799290,1cyclictest0-21swapper/500:36:305
3684882992927,2cyclictest105-21kcompactd019:35:054
3684882992927,1cyclictest3804443-21idleruntime-cro22:50:004
3684882992927,1cyclictest0-21swapper/420:39:044
368488299290,28cyclictest3758966-21apt-get21:26:324
368488299290,28cyclictest0-21swapper/421:49:294
368488299290,28cyclictest0-21swapper/421:42:304
368488299290,28cyclictest0-21swapper/421:31:344
368488299290,28cyclictest0-21swapper/420:43:544
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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