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2025-12-05 - 15:27
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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 Fri Dec 05, 2025 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9760932240172,23sleep60-21swapper/607:07:006
9762732227174,41sleep50-21swapper/507:09:325
9760162226171,17sleep30-21swapper/307:05:533
9759582220167,17sleep10-21swapper/107:05:021
9760152217186,20sleep20-21swapper/207:05:522
9760402214181,21sleep70-21swapper/707:06:137
9759612212179,21sleep40-21swapper/407:05:054
9761052211182,18sleep00-21swapper/007:07:100
97650999340,2cyclictest999195-21apt08:25:004
97649799340,29cyclictest1020433-21latency_hist09:25:000
97650799331,30cyclictest1074633-21sh11:05:003
976509993226,5cyclictest990508-21dump-pmu-power07:55:014
97650499320,31cyclictest1020435-21apt09:25:002
976502993232,0cyclictest0-21swapper/111:10:531
976509993126,4cyclictest3820478-21systemd-journal11:45:004
97650999311,29cyclictest430086-21in:imuxsock10:30:004
97650999310,27cyclictest0-21swapper/411:50:564
97650499310,3cyclictest1044725-21idleruntime-cro10:10:002
97650299310,0cyclictest0-21swapper/107:55:531
97649799310,29cyclictest1050102-21sh10:20:000
97649799310,29cyclictest1047415-21dump-pmu-power10:15:000
97652299300,29cyclictest782-21dbus-daemon07:15:017
976518993028,1cyclictest1003888-21apt-get08:40:556
97651899300,2cyclictest993191-21sh08:00:016
976513993026,3cyclictest3820478-21systemd-journal09:35:005
976509993027,2cyclictest1039829-21apt-get10:00:584
976509993027,2cyclictest0-21swapper/409:05:004
976509993024,5cyclictest981556-21idleruntime-cro07:25:004
976507993027,2cyclictest988994-21sh07:45:013
97650799300,2cyclictest1025816-21debian-sa109:35:003
97650799300,29cyclictest1109930-21turbostat.cron12:10:013
97650799300,29cyclictest0-21swapper/309:45:543
97650499300,29cyclictest1017722-21latency_hist09:20:002
97650499300,29cyclictest0-21swapper/211:25:542
976502993026,3cyclictest1039213-21fwupd09:59:141
976502993025,4cyclictest999196-21sh08:25:001
97650299300,29cyclictest979081-21sh07:15:001
97649799300,29cyclictest0-21swapper/012:40:000
97652299290,29cyclictest1101838-21turbostat.cron11:55:007
97651899290,29cyclictest989012-21munin-run07:45:016
97651899290,28cyclictest0-21swapper/611:20:556
97651899290,28cyclictest0-21swapper/610:00:576
976513992927,1cyclictest0-21swapper/511:25:005
97651399290,28cyclictest0-21swapper/512:15:565
97651399290,1cyclictest0-21swapper/508:10:005
976509992928,1cyclictest0-21swapper/407:25:544
97650999290,28cyclictest1123931-21apt-get12:35:524
97650999290,28cyclictest1056249-21apt-get10:30:564
97650999290,1cyclictest1012327-21sh09:10:004
97650499290,28cyclictest1110413-21http12:10:562
97650499290,28cyclictest1020914-21apt-get09:25:562
97650499290,1cyclictest0-21swapper/210:10:552
97650499290,0cyclictest0-21swapper/211:30:562
976502992927,2cyclictest0-21swapper/110:25:561
976502992926,3cyclictest0-21swapper/111:50:001
97650299290,28cyclictest0-21swapper/110:35:561
976497992927,1cyclictest0-21swapper/008:45:000
976497992925,3cyclictest981589-21idleruntime-cro07:25:010
97649799290,28cyclictest0-21swapper/011:50:560
97649799290,28cyclictest0-21swapper/010:50:550
97649799290,28cyclictest0-21swapper/009:59:160
97649799290,28cyclictest0-21swapper/007:55:010
97649799290,1cyclictest1017724-21turbostat.cron09:20:000
976522992827,1cyclictest1096943-21apt-get11:45:557
976522992827,1cyclictest1077327-21latency_hist11:10:007
976522992827,1cyclictest0-21swapper/707:40:547
97652299280,28cyclictest851rcuc/709:00:007
97652299280,28cyclictest1058460-21dump-pmu-power10:35:007
97652299280,27cyclictest0-21swapper/712:30:567
97651899280,27cyclictest0-21swapper/612:00:536
976513992827,1cyclictest0-21swapper/507:35:015
976513992826,1cyclictest0-21swapper/511:30:015
97651399280,27cyclictest0-21swapper/511:40:545
97651399280,1cyclictest0-21swapper/511:30:565
97651399280,0cyclictest0-21swapper/510:20:005
97650999280,27cyclictest0-21swapper/407:40:024
976507992827,0cyclictest0-21swapper/311:15:553
97650799280,28cyclictest985001-21apt-get07:35:023
97650799280,28cyclictest1050867-21apt-get10:20:543
97650799280,0cyclictest0-21swapper/309:40:543
976504992827,1cyclictest0-21swapper/208:55:532
976504992827,0cyclictest0-21swapper/211:59:172
976504992826,1cyclictest0-21swapper/210:15:542
97650499280,0cyclictest0-21swapper/210:20:542
976502992827,1cyclictest0-21swapper/112:25:561
976502992825,2cyclictest0-21swapper/110:45:561
97649799280,0cyclictest0-21swapper/011:30:560
976522992727,0cyclictest0-21swapper/712:25:567
976522992727,0cyclictest0-21swapper/711:15:557
976522992727,0cyclictest0-21swapper/709:45:557
976522992726,1cyclictest0-21swapper/710:25:567
97652299270,27cyclictest0-21swapper/711:00:547
976518992727,0cyclictest0-21swapper/612:35:526
976518992727,0cyclictest0-21swapper/611:55:546
976518992727,0cyclictest0-21swapper/611:15:556
976518992725,1cyclictest1087894-21systemd-tmpfile11:27:136
97651899270,0cyclictest0-21swapper/608:10:546
976513992727,0cyclictest0-21swapper/510:55:555
976509992727,0cyclictest0-21swapper/410:10:554
976509992726,1cyclictest0-21swapper/412:10:564
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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