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2025-11-17 - 04:08
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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 100 highest latencies:
System rack8slot4.osadl.org (updated Mon Nov 17, 2025 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19150012235180,44sleep00-21swapper/019:05:020
19170802234181,17sleep30-21swapper/319:07:063
19172752217186,20sleep50-21swapper/519:09:495
19170652215181,22sleep60-21swapper/619:06:536
19150322215186,19sleep40-21swapper/419:05:304
19171662213185,18sleep10-21swapper/119:08:161
19171452213185,18sleep70-21swapper/719:07:587
19150502206173,21sleep20-21swapper/219:05:442
191750099322,29cyclictest2002628-21sh21:45:015
191749099320,2cyclictest3820478-21systemd-journal22:30:003
191748199320,3cyclictest2095554-21turbostat.cron00:35:000
191750299310,3cyclictest1939609-21turbostat.cron19:50:006
1917486993130,1cyclictest0-21swapper/220:55:002
191748499310,30cyclictest1961740-21/usr/sbin/munin20:30:001
1917506993027,2cyclictest1994551-21apt21:30:017
191750699300,29cyclictest2092860-21sh00:30:007
191750699300,29cyclictest0-21swapper/723:20:007
191750699300,29cyclictest0-21swapper/719:20:567
1917502993027,2cyclictest1923435-21idleruntime-cro19:20:006
191750299300,29cyclictest1989155-21cron21:20:006
1917500993028,1cyclictest0-21swapper/520:30:015
191748499300,29cyclictest0-21swapper/123:55:591
191748199300,29cyclictest2046525-21turbostat.cron23:05:000
191748199300,29cyclictest1-21systemd21:00:000
191748199300,29cyclictest0-21swapper/023:16:000
191748199300,29cyclictest0-21swapper/022:40:580
1917506992927,1cyclictest0-21swapper/720:35:007
1917506992927,1cyclictest0-21swapper/700:00:597
1917506992926,2cyclictest2060247-21sh23:30:007
1917506992925,3cyclictest1970039-21idleruntime-cro20:45:007
191750699290,28cyclictest0-21swapper/723:05:007
191750699290,28cyclictest0-21swapper/720:01:017
191750699290,28cyclictest0-21swapper/719:25:577
191750699290,1cyclictest2096297-21apt-get00:36:007
1917502992926,2cyclictest3820478-21systemd-journal20:35:006
191750299290,28cyclictest0-21swapper/622:35:586
191750299290,28cyclictest0-21swapper/622:25:576
191750299290,28cyclictest0-21swapper/621:11:006
191750299290,28cyclictest0-21swapper/619:11:016
1917500992928,1cyclictest1921226-21apt-get19:15:575
1917500992927,1cyclictest2071317-21awk23:50:005
191750099290,28cyclictest0-21swapper/519:55:585
1917496992927,1cyclictest2003120-21apt-get21:45:594
1917496992927,1cyclictest1962432-21apt-get20:30:584
1917496992927,1cyclictest1917862-21apt-get19:11:014
1917496992927,1cyclictest0-21swapper/422:35:584
191749699290,29cyclictest0-21swapper/422:30:004
191749699290,28cyclictest0-21swapper/423:50:584
191749699290,28cyclictest0-21swapper/419:50:594
1917490992927,1cyclictest0-21swapper/300:31:013
1917490992927,1cyclictest0-21swapper/300:20:003
191749099290,28cyclictest0-21swapper/320:45:573
191749099290,28cyclictest0-21swapper/320:30:583
191749099290,28cyclictest0-21swapper/300:00:593
191749099290,1cyclictest0-21swapper/323:45:003
191749099290,1cyclictest0-21swapper/322:25:003
191748699290,28cyclictest0-21swapper/200:21:022
191748699290,1cyclictest0-21swapper/222:45:002
1917484992927,1cyclictest1923936-21apt-get19:20:561
1917484992927,1cyclictest0-21swapper/119:15:571
191748499290,28cyclictest2035485-21apt-get22:45:011
191748499290,28cyclictest0-21swapper/123:16:001
191748499290,28cyclictest0-21swapper/123:11:001
191748499290,28cyclictest0-21swapper/122:40:581
191748499290,28cyclictest0-21swapper/120:36:001
191748499290,1cyclictest0-21swapper/121:21:011
191748499290,1cyclictest0-21swapper/121:00:001
191748499290,0cyclictest0-21swapper/100:35:011
1917481992927,1cyclictest0-21swapper/021:16:010
1917481992927,1cyclictest0-21swapper/019:20:560
1917481992927,1cyclictest0-21swapper/019:11:010
191748199290,28cyclictest0-21swapper/021:21:010
191748199290,28cyclictest0-21swapper/020:25:590
191748199290,0cyclictest0-21swapper/023:55:590
1917506992827,1cyclictest0-21swapper/721:56:017
1917506992825,2cyclictest1945248-21cron20:00:007
1917500992827,1cyclictest0-21swapper/522:31:015
191750099280,0cyclictest0-21swapper/500:36:005
1917496992828,0cyclictest0-21swapper/419:55:594
1917496992826,1cyclictest2093349-21apt-get00:31:014
191749699280,1cyclictest0-21swapper/421:50:584
1917490992826,1cyclictest0-21swapper/323:20:583
191749099280,0cyclictest0-21swapper/322:31:013
191749099280,0cyclictest0-21swapper/319:50:593
1917486992827,1cyclictest1997724-21apt-get21:36:002
191748699280,28cyclictest0-21swapper/223:20:002
1917484992826,1cyclictest3820478-21systemd-journal19:40:001
1917481992827,1cyclictest0-21swapper/020:35:590
1917481992826,1cyclictest1934213-21latency_hist19:40:000
191748199280,0cyclictest0-21swapper/000:35:010
1917506992726,1cyclictest0-21swapper/700:11:017
1917506992725,1cyclictest2019527-21apt-get22:15:577
1917506992724,2cyclictest2032778-21apt22:40:007
191750699270,0cyclictest0-21swapper/723:55:597
191750699270,0cyclictest0-21swapper/721:11:007
1917502992727,0cyclictest0-21swapper/622:15:016
1917502992727,0cyclictest0-21swapper/620:20:586
1917502992727,0cyclictest0-21swapper/620:20:586
1917502992727,0cyclictest0-21swapper/620:15:006
1917502992727,0cyclictest0-21swapper/620:15:006
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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