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2026-05-20 - 14:15
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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 May 20, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6286072232171,50sleep40-21swapper/419:06:014
6286882225168,46sleep20-21swapper/219:07:112
6288552223166,45sleep30-21swapper/319:09:383
6280092222167,16sleep70-21swapper/719:05:237
6287972220161,19sleep10-21swapper/119:08:471
6288762209181,18sleep60-21swapper/619:09:576
6265282204173,20sleep00-21swapper/019:05:080
6286532203176,18sleep50-21swapper/519:06:415
62911999350,4cyclictest685488-21/usr/sbin/munin20:50:017
62911999340,29cyclictest0-21swapper/721:45:007
629108993327,5cyclictest713872-21apt-get21:40:124
629104993328,4cyclictest693856-21cron21:05:013
629104993328,4cyclictest693856-21cron21:05:013
62910099330,31cyclictest802608-21cron00:20:011
62911399320,31cyclictest757964-21cron23:00:015
629100993227,4cyclictest0-21swapper/121:10:131
629100993227,4cyclictest0-21swapper/121:00:121
629100993227,4cyclictest0-21swapper/121:00:121
62910099320,31cyclictest735702-21cron22:20:021
62910099320,28cyclictest0-21swapper/122:25:111
629119993128,2cyclictest696742-21latency_hist21:10:017
629100993127,3cyclictest0-21swapper/121:15:141
62910099310,3cyclictest107-21kcompactd019:51:301
62910099310,28cyclictest685945-21apt-get20:50:111
62910099310,28cyclictest0-21swapper/122:20:131
629119993027,3cyclictest0-21swapper/721:10:037
62911999300,29cyclictest279850-21systemd-journal00:20:017
62911999300,29cyclictest0-21swapper/722:25:127
62911999300,29cyclictest0-21swapper/722:20:137
629117993028,2cyclictest744090-21awk22:35:026
62911799300,29cyclictest780224-21cron23:40:016
62911799300,29cyclictest0-21swapper/622:35:126
62911399300,2cyclictest964-21in:imuxsock00:05:015
62910899300,30cyclictest0-21swapper/420:15:014
62910899300,29cyclictest707901-21appstreamcli21:30:024
629104993028,1cyclictest777889-21apt-get23:35:123
629104993026,3cyclictest0-21swapper/322:30:123
62910499301,28cyclictest0-21swapper/322:40:123
62910499300,29cyclictest0-21swapper/323:10:113
62910499300,29cyclictest0-21swapper/319:56:213
62910299300,29cyclictest1-21systemd00:30:012
62910299300,29cyclictest0-21swapper/223:15:522
629100993029,1cyclictest696719-21appstreamcli21:10:011
629100993026,4cyclictest0-21swapper/120:50:011
62910099300,1cyclictest643736-21appstreamcli19:35:031
62909799300,2cyclictest794703-21taskset00:05:170
629119992928,1cyclictest0-21swapper/719:25:017
629119992927,2cyclictest0-21swapper/722:32:187
629119992926,3cyclictest0-21swapper/721:15:147
629119992926,3cyclictest0-21swapper/720:00:017
629119992926,2cyclictest0-21swapper/721:00:127
629119992926,2cyclictest0-21swapper/721:00:117
62911999290,29cyclictest0-21swapper/722:20:027
62911999290,28cyclictest107-21kcompactd023:06:447
62911999290,28cyclictest0-21swapper/722:11:217
62911999290,1cyclictest654906-21919:55:017
62911999290,0cyclictest0-21swapper/720:50:127
629117992927,1cyclictest0-21swapper/620:05:136
629117992924,4cyclictest643653-21cron19:35:016
62911799290,28cyclictest696961-21latency_hist21:10:026
62911799290,28cyclictest0-21swapper/623:30:126
62911799290,28cyclictest0-21swapper/622:05:596
62911799290,28cyclictest0-21swapper/621:20:126
62911799290,28cyclictest0-21swapper/620:55:126
62911799290,28cyclictest0-21swapper/620:15:016
62911799290,28cyclictest0-21swapper/620:00:066
62911799290,28cyclictest0-21swapper/619:45:116
62911799290,1cyclictest0-21swapper/619:55:016
62911799290,1cyclictest0-21swapper/619:45:006
629113992927,1cyclictest0-21swapper/521:30:015
629113992924,4cyclictest646469-21cron19:40:015
62911399290,29cyclictest716195-21cron21:45:015
62911399290,28cyclictest719461-21apt-get21:50:115
62911399290,28cyclictest0-21swapper/523:10:305
62911399290,28cyclictest0-21swapper/522:05:135
62911399290,1cyclictest805844-21apt-get00:25:125
62911399290,1cyclictest0-21swapper/500:25:015
629108992928,1cyclictest0-21swapper/400:35:134
62910899290,29cyclictest1-21systemd19:25:014
62910899290,28cyclictest0-21swapper/423:50:034
62910899290,28cyclictest0-21swapper/420:25:124
629104992928,1cyclictest744494-21apt-get22:35:123
629104992927,1cyclictest738542-21sd-close22:25:023
62910499290,28cyclictest652516-21apt-get19:50:133
62910499290,28cyclictest521rcuc/320:45:103
62910499290,28cyclictest0-21swapper/322:25:123
62910499290,28cyclictest0-21swapper/321:29:233
62910499290,28cyclictest0-21swapper/321:10:033
62910499290,28cyclictest0-21swapper/320:00:113
62910299290,28cyclictest747289-21apt-get22:40:122
62910299290,28cyclictest0-21swapper/223:45:132
62910299290,28cyclictest0-21swapper/223:38:272
62910299290,28cyclictest0-21swapper/223:28:142
62910299290,28cyclictest0-21swapper/221:13:492
62910299290,28cyclictest0-21swapper/220:20:122
629100992927,1cyclictest290-21plymouthd23:35:121
62910099290,28cyclictest769550-21apt-get23:20:131
62910099290,28cyclictest0-21swapper/123:30:011
62910099290,28cyclictest0-21swapper/100:30:131
62910099290,1cyclictest1-21systemd21:45:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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