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2025-12-24 - 17:13
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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 Wed Dec 24, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
364942239175,51sleep70-21swapper/707:06:517
363792231174,18sleep20-21swapper/207:05:102
386252220168,17sleep00-21swapper/007:09:340
365512217160,45sleep40-21swapper/407:07:364
365772211178,22sleep30-21swapper/307:08:003
364972210177,21sleep10-21swapper/107:06:541
365312204174,19sleep60-21swapper/607:07:226
363822204175,19sleep50-21swapper/507:05:125
38889996518,23cyclictest2789217-21kworker/0:0-events07:41:380
3890999310,30cyclictest369-21systemd-journal10:25:007
3890099310,30cyclictest161744-21dump-pmu-power10:55:024
3889199310,2cyclictest369-21systemd-journal10:55:011
3890699300,29cyclictest78-21ksoftirqd/607:33:156
3890699300,1cyclictest153654-21sh10:40:016
3890399300,1cyclictest1-21systemd11:40:025
3890099300,29cyclictest112802-21apt-config09:25:004
3889799300,29cyclictest0-21swapper/311:08:163
3889799300,1cyclictest124437-21apt-get09:48:153
38895993028,1cyclictest157013-21apt-get10:48:152
3889599300,29cyclictest83124-21cron08:30:012
3889599300,29cyclictest173161-21apt-get11:18:162
3889199300,29cyclictest0-21swapper/111:10:011
3888999300,29cyclictest369-21systemd-journal12:40:010
3888999300,29cyclictest369-21systemd-journal10:50:020
38909992928,1cyclictest0-21swapper/709:48:167
3890999290,28cyclictest96578-21cron08:55:017
3890999290,28cyclictest0-21swapper/711:33:167
3890999290,28cyclictest0-21swapper/710:28:157
3890999290,1cyclictest0-21swapper/709:58:167
3890699290,28cyclictest0-21swapper/610:58:176
3890699290,28cyclictest0-21swapper/610:58:166
3890699290,28cyclictest0-21swapper/610:23:166
38903992927,1cyclictest86465-21apt-get08:38:215
38903992927,1cyclictest218881-21apt-key12:40:015
3890399290,28cyclictest169822-21idleruntime-cro11:10:025
3890399290,28cyclictest0-21swapper/510:33:145
3890399290,28cyclictest0-21swapper/510:23:165
3890399290,28cyclictest0-21swapper/510:13:135
3890099290,1cyclictest0-21swapper/412:33:164
38897992927,1cyclictest159097-21systemd-run10:50:013
3889799290,28cyclictest67358-21apt-get08:03:163
3889799290,28cyclictest0-21swapper/310:38:163
3889799290,28cyclictest0-21swapper/310:23:153
3889799290,28cyclictest0-21swapper/307:18:133
38895992927,1cyclictest180598-21sh11:30:012
3889599290,28cyclictest167781-21apt-get11:08:162
3889599290,28cyclictest0-21swapper/210:43:162
3889599290,1cyclictest210520-21awk12:25:012
38891992927,1cyclictest97230-21http08:58:161
38891992927,1cyclictest0-21swapper/110:25:011
38891992927,1cyclictest0-21swapper/110:00:021
3889199290,28cyclictest0-21swapper/112:28:151
3889199290,1cyclictest121752-21apt-get09:43:201
38889992926,2cyclictest69404-21dump-pmu-power08:05:020
3888999290,28cyclictest0-21swapper/012:18:170
3888999290,1cyclictest0-21swapper/007:50:020
38909992827,1cyclictest0-21swapper/709:00:017
3890999280,28cyclictest278-21plymouthd11:15:017
3890999280,0cyclictest0-21swapper/712:03:177
38906992827,1cyclictest761rcuc/610:53:146
38906992827,1cyclictest0-21swapper/608:30:016
38906992826,1cyclictest123801-21munin-run09:45:006
3890699280,27cyclictest0-21swapper/608:53:156
38900992826,1cyclictest0-21swapper/411:10:024
3890099280,27cyclictest0-21swapper/410:45:014
3890099280,27cyclictest0-21swapper/408:23:154
38897992827,1cyclictest0-21swapper/312:10:023
38897992827,1cyclictest0-21swapper/311:55:013
38897992827,0cyclictest0-21swapper/309:13:143
3889799280,28cyclictest0-21swapper/307:40:013
3889799280,0cyclictest0-21swapper/309:00:003
38895992827,1cyclictest129159-21sh09:55:002
38895992826,1cyclictest192012-21apt-get11:53:172
38895992826,1cyclictest188693-21munin-run11:45:012
3889599280,28cyclictest401rcuc/210:25:012
3889599280,28cyclictest0-21swapper/211:05:012
3889599280,0cyclictest0-21swapper/208:43:152
38891992827,1cyclictest0-21swapper/112:23:141
38891992827,1cyclictest0-21swapper/111:15:011
38891992827,1cyclictest0-21swapper/108:45:001
38891992827,0cyclictest0-21swapper/110:28:151
38891992826,1cyclictest116349-21apt-get09:33:151
3889199280,0cyclictest0-21swapper/111:28:151
38889992824,0cyclictest0-21swapper/009:28:170
3888999280,28cyclictest0-21swapper/010:23:150
38909992727,0cyclictest0-21swapper/711:23:157
38909992726,1cyclictest0-21swapper/711:48:147
38909992726,1cyclictest0-21swapper/708:03:177
3890999270,0cyclictest0-21swapper/712:33:167
3890999270,0cyclictest0-21swapper/708:33:167
38906992727,0cyclictest0-21swapper/612:18:176
38906992727,0cyclictest0-21swapper/610:18:176
38906992727,0cyclictest0-21swapper/608:13:166
38906992726,1cyclictest205086-21sh12:15:016
38906992725,1cyclictest0-21swapper/610:13:156
3890699270,0cyclictest0-21swapper/612:33:166
3890699270,0cyclictest0-21swapper/612:08:156
3890699270,0cyclictest0-21swapper/611:38:186
3890699270,0cyclictest0-21swapper/611:03:166
38903992727,0cyclictest0-21swapper/511:18:155
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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