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2026-04-28 - 15:43
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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 28, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29977852234174,19sleep60-21swapper/619:08:596
29978282227163,18sleep40-21swapper/419:09:384
29977272213184,19sleep50-21swapper/519:08:105
29977152212184,19sleep20-21swapper/219:07:592
29976522211182,19sleep70-21swapper/719:07:087
29978272207179,18sleep30-21swapper/319:09:373
29975902207177,20sleep10-21swapper/119:06:131
29975712206178,19sleep00-21swapper/019:05:560
2998067994141,0cyclictest0-21swapper/400:30:004
2998069993535,0cyclictest0-21swapper/520:20:125
299806999340,29cyclictest3018263-21cron19:45:025
2998066993432,1cyclictest3043304-21cron20:30:013
299806999330,32cyclictest3065592-21cron21:10:015
299806999330,30cyclictest1-21systemd00:10:015
299806999330,28cyclictest0-21swapper/522:45:015
299807399320,31cyclictest3124257-21awk22:55:016
299806999320,31cyclictest3076796-21idleruntime-cro21:30:015
299806999320,28cyclictest0-21swapper/522:15:135
299806799320,32cyclictest3001113-21sd-close19:15:024
299806199320,30cyclictest3107435-21cron22:25:011
299807399310,3cyclictest3024266-21apt-get19:55:136
299806999310,30cyclictest0-21swapper/519:25:135
299806699310,30cyclictest3127457-21apt-get23:00:133
2998061993127,3cyclictest3149825-21http23:40:121
299805799310,3cyclictest3163312-21cron00:05:000
2998075993028,1cyclictest3068868-21apt-get21:15:147
299807599300,29cyclictest0-21swapper/721:20:127
299807599300,29cyclictest0-21swapper/700:15:157
2998073993028,1cyclictest3172114-21apt-get00:20:146
299807399300,1cyclictest3085141-21cron21:45:006
2998069993027,3cyclictest0-21swapper/522:15:015
299806799300,29cyclictest0-21swapper/419:40:024
2998062993027,3cyclictest3132642-21/usr/sbin/munin23:10:022
299806299300,29cyclictest0-21swapper/200:00:132
2998061993027,2cyclictest3163311-21cron00:05:001
2998061993026,3cyclictest3040525-21cron20:25:011
299806199300,29cyclictest3183525-21cron00:40:011
299806199300,29cyclictest3085449-21latency_hist21:45:021
299806199300,29cyclictest3018309-21true19:45:011
299806199300,29cyclictest0-21swapper/123:55:101
299805799300,29cyclictest3110222-21cron22:30:010
2998075992928,1cyclictest0-21swapper/722:00:137
2998075992928,1cyclictest0-21swapper/722:00:137
2998075992928,1cyclictest0-21swapper/700:20:147
2998075992927,1cyclictest3107884-21apt-get22:25:117
2998075992927,1cyclictest0-21swapper/723:15:127
2998075992927,1cyclictest0-21swapper/721:40:137
299807599290,29cyclictest3068389-21cron21:15:017
299807599290,28cyclictest0-21swapper/721:05:137
299807599290,0cyclictest0-21swapper/720:30:137
2998073992927,1cyclictest0-21swapper/623:40:126
2998073992927,1cyclictest0-21swapper/623:00:136
2998073992927,1cyclictest0-21swapper/621:15:146
299807399290,29cyclictest1-21systemd19:15:016
299807399290,28cyclictest3177672-21apt-get00:30:136
299807399290,28cyclictest3113439-21apt-get22:35:106
299807399290,28cyclictest0-21swapper/623:35:136
299807399290,28cyclictest0-21swapper/623:20:116
299807399290,28cyclictest0-21swapper/621:35:126
299807399290,28cyclictest0-21swapper/621:05:136
299807399290,28cyclictest0-21swapper/620:20:116
299807399290,28cyclictest0-21swapper/600:15:156
299807399290,1cyclictest0-21swapper/623:10:026
299807399290,1cyclictest0-21swapper/620:30:126
299807399290,0cyclictest0-21swapper/623:50:126
299807399290,0cyclictest0-21swapper/621:00:106
2998069992928,1cyclictest0-21swapper/522:30:125
2998069992928,1cyclictest0-21swapper/500:30:135
299806999290,28cyclictest0-21swapper/520:50:115
2998067992925,3cyclictest3068722-21latency_hist21:15:014
299806799290,28cyclictest3155383-21apt-get23:50:114
299806799290,28cyclictest3062871-21921:05:014
299806799290,28cyclictest3052143-21apt-get20:45:144
299806799290,28cyclictest0-21swapper/422:35:094
299806799290,28cyclictest0-21swapper/422:05:124
299806799290,28cyclictest0-21swapper/422:05:114
299806799290,28cyclictest0-21swapper/421:05:114
299806799290,28cyclictest0-21swapper/419:45:134
299806799290,1cyclictest0-21swapper/422:45:154
299806799290,1cyclictest0-21swapper/400:35:124
2998066992928,1cyclictest0-21swapper/319:45:133
2998066992927,1cyclictest3183522-21cron00:40:003
2998066992927,1cyclictest0-21swapper/321:05:113
299806699290,28cyclictest3107884-21apt-get22:25:123
299806699290,28cyclictest0-21swapper/323:50:113
299806699290,28cyclictest0-21swapper/323:20:133
299806699290,28cyclictest0-21swapper/323:10:043
299806699290,28cyclictest0-21swapper/322:35:103
299806699290,28cyclictest0-21swapper/320:20:113
299806699290,28cyclictest0-21swapper/319:35:133
2998062992928,1cyclictest0-21swapper/219:15:022
299806299290,28cyclictest3135460-21appstreamcli23:15:042
299806299290,28cyclictest3080008-21apt-get21:35:122
299806299290,28cyclictest0-21swapper/223:20:052
299806299290,28cyclictest0-21swapper/222:15:132
299806299290,28cyclictest0-21swapper/221:00:102
299806299290,28cyclictest0-21swapper/220:55:122
299806299290,28cyclictest0-21swapper/220:35:122
299806299290,28cyclictest0-21swapper/219:55:132
2998061992928,1cyclictest0-21swapper/123:10:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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