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2026-04-21 - 06:03
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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 Apr 21, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21350592227171,44sleep70-21swapper/719:07:077
21351122226170,19sleep60-21swapper/619:07:556
21349272226173,43sleep50-21swapper/519:05:125
21371322222166,44sleep30-21swapper/319:09:033
21371492221162,19sleep20-21swapper/219:09:192
21349882218185,21sleep10-21swapper/119:06:051
21370772212184,18sleep40-21swapper/419:08:164
21349492206180,17sleep00-21swapper/019:05:320
2137432994620,25cyclictest0-21swapper/200:13:392
213743299350,30cyclictest2162214-21sh19:55:012
2137430993511,0cyclictest0-21swapper/100:13:411
213743599340,30cyclictest2162210-21idleruntime-cro19:55:013
2137441993331,2cyclictest2303269-21fwupd00:13:395
213743599320,29cyclictest2271606-21apt-get23:17:573
213743299320,31cyclictest0-21swapper/223:17:562
213744699310,30cyclictest2314156-21sh00:35:017
213743299310,28cyclictest0-21swapper/222:02:572
2137425993127,3cyclictest0-21swapper/023:47:580
2137446993027,2cyclictest2300693-21latency_hist00:10:017
213744699300,29cyclictest681-21dbus-daemon23:50:007
213744699300,29cyclictest2241062-21dump-pmu-power22:20:027
213744399300,29cyclictest369-21systemd-journal22:25:026
213744199300,29cyclictest2186432-21sh20:40:015
213743799300,29cyclictest2316858-21munin-run00:40:014
213743799300,29cyclictest2268032-21sh23:10:004
213743799300,29cyclictest2146690-21apt-get19:27:574
2137435993029,1cyclictest0-21swapper/320:02:573
2137435993028,1cyclictest2293141-21apt-get23:57:593
2137435993028,1cyclictest2236301-21apt-get22:12:583
213743599300,29cyclictest0-21swapper/322:45:023
213743599300,1cyclictest278-21plymouthd21:40:013
213743299300,29cyclictest0-21swapper/223:42:562
213743299300,29cyclictest0-21swapper/200:40:012
213743099300,29cyclictest2300691-21apt00:10:011
213743099300,29cyclictest2295279-21cups-browsed00:00:001
2137425993027,2cyclictest2170290-21dump-pmu-power20:10:010
2137425993027,0cyclictest0-21swapper/022:30:020
2137425993026,0cyclictest0-21swapper/022:20:020
213742599300,29cyclictest0-21swapper/022:55:020
2137446992927,1cyclictest2290452-21apt-get23:52:577
2137446992926,3cyclictest2192128-21sshd20:50:017
2137446992926,2cyclictest700-21rs:main7
2137446992926,2cyclictest700-21rs:main7
213744699290,28cyclictest278-21plymouthd19:30:017
213744699290,28cyclictest0-21swapper/723:20:017
213744699290,28cyclictest0-21swapper/723:12:587
213744699290,1cyclictest0-21swapper/720:07:587
2137443992927,1cyclictest0-21swapper/623:10:016
2137443992927,1cyclictest0-21swapper/600:05:016
213744399290,28cyclictest278-21plymouthd19:35:016
213744399290,28cyclictest2137927-21apt-get19:12:586
213744399290,1cyclictest2154135-21sh19:40:016
213744199290,1cyclictest2213917-21awk21:30:005
213744199290,1cyclictest2192300-21kworker/5:1-events21:25:015
213744199290,1cyclictest0-21swapper/521:42:575
2137437992927,1cyclictest0-21swapper/422:25:014
213743799290,28cyclictest0-21swapper/420:05:004
213743799290,28cyclictest0-21swapper/400:12:574
213743799290,1cyclictest1-21systemd19:50:014
213743799290,1cyclictest0-21swapper/423:15:004
2137435992927,1cyclictest2265298-21latency_hist23:05:023
2137435992927,1cyclictest2175666-21sh20:20:013
2137435992927,1cyclictest2154772-21apt-get19:42:583
2137435992926,2cyclictest2289864-21idleruntime-cro23:50:013
213743599290,28cyclictest2285080-21apt-get23:42:573
213743599290,28cyclictest0-21swapper/300:32:583
213743599290,1cyclictest2316847-21turbostat.cron00:40:013
213743599290,1cyclictest2255155-21apt-get22:47:573
2137432992928,1cyclictest2233617-21apt-get22:07:572
2137432992927,1cyclictest2190023-21apt-get20:47:572
2137432992927,1cyclictest2181680-21apt-get20:32:562
2137432992927,1cyclictest0-21swapper/222:15:022
2137432992927,1cyclictest0-21swapper/220:12:582
2137432992926,2cyclictest2265297-21sh23:05:022
213743299290,28cyclictest0-21swapper/221:47:592
213743299290,28cyclictest0-21swapper/219:27:572
213743299290,1cyclictest0-21swapper/223:32:582
2137430992927,1cyclictest0-21swapper/119:50:011
213743099290,28cyclictest0-21swapper/123:52:571
213743099290,28cyclictest0-21swapper/123:12:581
213743099290,28cyclictest0-21swapper/121:20:001
213743099290,28cyclictest0-21swapper/100:32:581
213742599290,28cyclictest0-21swapper/023:22:580
213742599290,28cyclictest0-21swapper/020:12:580
213742599290,1cyclictest2146690-21apt-get19:27:570
2137446992827,1cyclictest1-21systemd22:00:027
2137446992827,1cyclictest0-21swapper/722:35:027
2137446992827,1cyclictest0-21swapper/721:20:007
2137446992827,1cyclictest0-21swapper/700:37:567
2137446992826,1cyclictest2249761-21apt-get22:37:567
2137443992827,1cyclictest0-21swapper/623:22:586
2137443992826,1cyclictest2268654-21apt-get23:12:576
2137443992826,1cyclictest0-21swapper/622:30:026
2137443992826,1cyclictest0-21swapper/600:15:016
2137441992827,1cyclictest2306720-21apt-get00:22:555
2137441992827,1cyclictest0-21swapper/520:25:005
2137441992826,1cyclictest0-21swapper/520:50:005
213744199280,28cyclictest2141298-21apt-get19:17:585
213744199280,28cyclictest0-21swapper/522:05:025
213744199280,28cyclictest0-21swapper/519:30:005
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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