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2025-12-07 - 09:12
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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 Sun Dec 07, 2025 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17775042222188,22sleep40-21swapper/419:05:174
17795772221169,17sleep10-21swapper/119:07:151
17775272220190,19sleep70-21swapper/719:05:377
17795452219189,19sleep50-21swapper/519:06:475
17797112216182,19sleep00-21swapper/019:09:070
17797472213183,19sleep60-21swapper/619:09:376
17795992213179,20sleep30-21swapper/319:07:333
17795132211184,17sleep20-21swapper/219:06:202
178013099340,29cyclictest1889932-21sh22:30:000
178015099320,30cyclictest0-21swapper/519:35:005
178013799320,30cyclictest1906344-21sh23:00:002
178015599310,30cyclictest3820478-21systemd-journal21:45:006
1780150993128,2cyclictest1958318-21taskset00:35:545
1780130993127,3cyclictest1784228-21apt-get19:15:540
178013099310,29cyclictest1947060-21latency_hist00:15:000
1780160993027,2cyclictest1925959-21apt-get23:35:567
1780155993028,1cyclictest1824964-21apt-get20:30:576
178015099300,29cyclictest3820478-21systemd-journal23:05:005
1780137993028,1cyclictest1816609-21apt-get20:15:562
178013799300,2cyclictest1824964-21apt-get20:30:572
178013799300,29cyclictest0-21swapper/219:50:562
1780133993027,2cyclictest1922525-21idleruntime-cro23:30:001
178013099300,29cyclictest0-21swapper/020:10:000
1780160992927,1cyclictest1879641-21apt-get22:10:587
1780160992927,1cyclictest0-21swapper/723:20:007
1780160992926,2cyclictest1854405-21munin-run21:25:007
178016099290,28cyclictest1939032-40gzip00:00:017
178016099290,1cyclictest1819583-21apt-get20:20:557
178016099290,1cyclictest1805338-21awk19:55:007
1780155992927,1cyclictest0-21swapper/621:05:556
178015599290,28cyclictest1955628-21apt-get00:30:566
178015599290,28cyclictest1895816-21apt-get22:40:556
178015599290,28cyclictest0-21swapper/623:10:556
178015599290,28cyclictest0-21swapper/622:25:576
178015599290,28cyclictest0-21swapper/620:30:016
178015599290,28cyclictest0-21swapper/619:55:556
178015599290,28cyclictest0-21swapper/619:10:016
1780150992927,1cyclictest0-21swapper/519:50:565
178015099290,28cyclictest0-21swapper/523:10:555
178015099290,28cyclictest0-21swapper/522:45:555
178015099290,28cyclictest0-21swapper/520:40:585
1780145992927,1cyclictest1955149-21dump-pmu-power00:30:004
1780145992927,1cyclictest0-21swapper/419:55:564
178014599290,28cyclictest0-21swapper/421:30:004
1780141992927,1cyclictest1958314-21apt-get00:35:543
178014199290,28cyclictest0-21swapper/323:15:583
1780137992928,1cyclictest1857081-21sh21:30:002
178013799290,28cyclictest1797721-21apt-get19:40:562
178013799290,28cyclictest0-21swapper/220:55:562
1780133992927,1cyclictest0-21swapper/123:30:541
1780130992927,1cyclictest1876951-21apt-get22:05:560
178013099290,1cyclictest1874264-21apt-get22:00:570
1780160992828,0cyclictest0-21swapper/722:55:557
1780160992827,1cyclictest0-21swapper/721:35:007
1780160992826,1cyclictest1887729-21apt-get22:25:577
178016099280,0cyclictest0-21swapper/722:20:557
1780155992827,1cyclictest0-21swapper/620:20:556
178015599280,28cyclictest0-21swapper/620:15:016
1780150992826,1cyclictest3820478-21systemd-journal20:30:015
1780150992825,2cyclictest3820478-21systemd-journal21:50:005
1780145992827,1cyclictest1782982-21latency_hist19:15:014
178014599280,0cyclictest0-21swapper/420:15:564
1780141992827,1cyclictest0-21swapper/300:10:563
178014199280,28cyclictest1873766-21dump-pmu-power22:00:003
178014199280,28cyclictest0-21swapper/322:35:543
178014199280,28cyclictest0-21swapper/319:10:553
178014199280,27cyclictest0-21swapper/323:50:563
178014199280,0cyclictest0-21swapper/320:40:583
178014199280,0cyclictest0-21swapper/319:55:553
1780137992825,2cyclictest1955150-21turbostat.cron00:30:002
178013799280,1cyclictest0-21swapper/221:35:542
1780133992827,1cyclictest0-21swapper/123:45:551
178013399280,0cyclictest0-21swapper/122:10:581
178013399280,0cyclictest0-21swapper/121:50:561
178013399280,0cyclictest0-21swapper/121:05:561
1780160992727,0cyclictest0-21swapper/722:05:567
1780160992727,0cyclictest0-21swapper/720:05:557
1780160992727,0cyclictest0-21swapper/719:40:567
1780160992725,1cyclictest1920313-21apt-get23:25:537
1780160992725,1cyclictest1854875-21apt-get21:25:567
178016099270,0cyclictest0-21swapper/721:35:547
1780155992726,1cyclictest0-21swapper/622:30:556
1780155992726,1cyclictest0-21swapper/619:40:006
178015599270,0cyclictest0-21swapper/623:00:556
1780150992727,0cyclictest0-21swapper/520:30:575
1780150992725,1cyclictest26450irq/138-nvme0q620:15:015
1780150992725,1cyclictest0-21swapper/522:25:575
178015099270,0cyclictest0-21swapper/523:45:555
178015099270,0cyclictest0-21swapper/523:40:545
178015099270,0cyclictest0-21swapper/520:20:555
1780145992727,0cyclictest0-21swapper/422:20:554
1780145992726,1cyclictest0-21swapper/421:35:544
178014599270,0cyclictest0-21swapper/422:55:554
178014599270,0cyclictest0-21swapper/422:25:574
1780141992727,0cyclictest0-21swapper/320:00:573
1780141992727,0cyclictest0-21swapper/319:15:543
178014199270,0cyclictest0-21swapper/320:30:573
1780137992727,0cyclictest0-21swapper/222:25:572
1780137992726,1cyclictest0-21swapper/222:50:002
178013799270,0cyclictest0-21swapper/223:30:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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