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2025-12-02 - 11:41
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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 Tue Dec 02, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18611902246186,19sleep60-21swapper/619:07:466
18611682238184,17sleep20-21swapper/219:07:262
18590932231174,19sleep30-21swapper/319:05:263
18590722224195,18sleep00-21swapper/019:05:070
18613242223191,20sleep40-21swapper/419:09:374
18612502222189,21sleep50-21swapper/519:08:335
18613212218190,18sleep10-21swapper/119:09:341
18610812213179,21sleep70-21swapper/719:06:107
1861561994218,24cyclictest0-21swapper/321:32:303
1861561993634,1cyclictest0-21swapper/320:45:003
186157399350,2cyclictest1989555-21apt23:05:007
186157199320,31cyclictest1929748-21apt21:15:016
186155699320,31cyclictest1-21systemd19:15:002
1861573993127,3cyclictest0-21swapper/721:40:587
186157399310,1cyclictest1979260-21apt-get22:45:567
186156199310,30cyclictest430088-21rs:main3
186155699313,28cyclictest0-21swapper/219:45:562
186155099310,3cyclictest1978778-21cron22:45:000
186157399300,29cyclictest0-21swapper/720:30:577
186157199300,29cyclictest2014106-21latency_hist23:50:006
186157199300,29cyclictest0-21swapper/621:35:006
1861567993028,1cyclictest1889826-21apt-get20:00:585
1861567993027,2cyclictest1908187-21latency_hist20:35:005
186156799300,29cyclictest2038374-21debian-sa100:35:005
186156599300,29cyclictest1951313-21debian-sa121:55:004
1861556993029,1cyclictest0-21swapper/222:10:002
186155699301,1cyclictest1897407-21latency_hist20:15:002
186155199300,29cyclictest0-21swapper/121:10:011
186155199300,29cyclictest0-21swapper/119:55:001
186155099300,29cyclictest2009160-21apt-get23:40:560
1861573992927,1cyclictest0-21swapper/720:10:007
1861571992927,1cyclictest1971172-21apt-get22:30:566
1861571992927,1cyclictest1943216-21cron21:40:006
1861571992926,3cyclictest1948617-21sh21:50:006
186157199290,28cyclictest1986858-21munin-run23:00:006
186157199290,28cyclictest0-21swapper/621:20:556
1861567992928,1cyclictest1998119-21apt-get23:20:565
186156799290,28cyclictest1989585-21awk23:05:005
186156799290,28cyclictest1908666-21apt-get20:35:565
186156799290,28cyclictest0-21swapper/521:20:555
186156799290,28cyclictest0-21swapper/520:06:005
1861565992927,1cyclictest1954263-21apt22:00:004
186156199290,28cyclictest1914063-21apt-get20:45:573
186156199290,28cyclictest0-21swapper/319:40:573
186156199290,1cyclictest1870244-21awk19:25:003
1861556992927,1cyclictest3820478-21systemd-journal22:40:002
186155699290,1cyclictest1913583-21sh20:45:002
186155699290,1cyclictest1870222-21munin-run19:25:002
186155199290,28cyclictest0-21swapper/123:35:571
186155199290,28cyclictest0-21swapper/123:20:551
186155199290,28cyclictest0-21swapper/121:55:571
186155199290,28cyclictest0-21swapper/121:35:551
186155199290,28cyclictest0-21swapper/119:20:561
186155199290,1cyclictest0-21swapper/123:00:571
1861550992927,1cyclictest1959918-21idleruntime-cro22:10:000
186155099290,28cyclictest0-21swapper/019:25:000
186155099290,1cyclictest2030786-21apt-get00:20:540
1861573992827,1cyclictest0-21swapper/722:10:557
1861573992827,1cyclictest0-21swapper/720:50:567
1861573992826,2cyclictest0-21swapper/719:25:577
1861571992826,1cyclictest1916284-21munin-run20:50:016
186157199280,0cyclictest0-21swapper/621:15:556
1861567992827,1cyclictest0-21swapper/520:50:565
1861567992826,1cyclictest1984635-21apt-get22:55:565
186156799280,27cyclictest0-21swapper/523:55:575
186156799280,27cyclictest0-21swapper/523:55:575
186156799280,27cyclictest0-21swapper/522:30:565
186156799280,27cyclictest0-21swapper/519:10:565
1861565992828,0cyclictest0-21swapper/423:25:564
1861565992828,0cyclictest0-21swapper/420:50:574
1861565992826,1cyclictest0-21swapper/423:10:004
1861561992826,1cyclictest1976071-21apt22:40:003
186156199280,28cyclictest1892516-21apt-get20:06:003
186156199280,28cyclictest0-21swapper/323:25:003
186156199280,1cyclictest1895197-21apt-get20:10:563
186156199280,0cyclictest0-21swapper/321:25:583
186155699280,28cyclictest0-21swapper/220:45:572
186155699280,28cyclictest0-21swapper/220:25:572
186155699280,28cyclictest0-21swapper/219:40:572
1861551992827,1cyclictest0-21swapper/120:50:561
186155199280,0cyclictest0-21swapper/122:10:551
1861550992827,1cyclictest0-21swapper/019:40:570
186155099280,27cyclictest0-21swapper/020:10:560
186155099280,0cyclictest1867501-21cron19:20:000
186155099280,0cyclictest0-21swapper/020:06:000
1861573992727,0cyclictest0-21swapper/721:35:557
1861573992726,1cyclictest1914063-21apt-get20:45:577
1861571992727,0cyclictest0-21swapper/623:00:576
1861571992727,0cyclictest0-21swapper/622:25:576
1861571992727,0cyclictest0-21swapper/621:05:556
1861571992727,0cyclictest0-21swapper/600:25:556
1861571992725,1cyclictest1984187-21awk22:55:006
1861571992724,2cyclictest2008659-21apt23:40:006
186157199270,0cyclictest0-21swapper/622:20:576
1861567992727,0cyclictest0-21swapper/522:40:565
1861567992727,0cyclictest0-21swapper/500:05:555
186156799270,0cyclictest0-21swapper/521:55:015
186156799270,0cyclictest0-21swapper/519:15:555
1861565992727,0cyclictest0-21swapper/423:30:574
1861565992726,1cyclictest0-21swapper/423:50:554
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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