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2025-12-14 - 05:33
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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 Sun Dec 14, 2025 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7911292233176,19sleep70-21swapper/719:06:357
7911612218188,19sleep30-21swapper/319:07:023
7912432216185,19sleep10-21swapper/119:08:131
7910542216186,19sleep00-21swapper/019:05:310
7912472215187,18sleep50-21swapper/519:08:165
7910872215187,18sleep60-21swapper/619:06:016
7911622212185,17sleep40-21swapper/419:07:034
7912442209178,20sleep20-21swapper/219:08:132
791591993428,5cyclictest827679-21latency_hist20:15:000
79159199340,29cyclictest0-21swapper/022:40:020
791613993227,4cyclictest797532-21sh19:20:007
79160199320,31cyclictest947736-21sh23:55:003
791591993228,3cyclictest0-21swapper/019:20:010
79159199320,31cyclictest0-21swapper/023:38:140
79159199320,31cyclictest0-21swapper/000:40:000
791613993128,2cyclictest972285-21turbostat.cron00:40:007
79160199310,30cyclictest369-21systemd-journal00:10:013
79159599310,30cyclictest961508-21sh00:20:011
79159199310,29cyclictest0-21swapper/020:30:000
791613993027,2cyclictest934283-21apt23:30:027
791613993027,2cyclictest369-21systemd-journal20:40:017
791613993027,2cyclictest0-21swapper/720:25:007
79161199301,29cyclictest700-21rs:main6
79161199300,30cyclictest920813-21sh23:05:026
79161199300,2cyclictest811336-21apt-key19:45:016
79161199300,29cyclictest901182-21sh22:30:016
791606993028,1cyclictest924151-21apt-get23:13:175
791606993027,2cyclictest873982-21sh21:40:025
791605993027,2cyclictest876693-21latency_hist21:45:024
79160599300,28cyclictest0-21swapper/420:48:164
791601993029,1cyclictest0-21swapper/320:20:013
791601993028,1cyclictest962179-21apt-get00:23:173
79160199300,29cyclictest893745-21apt-get22:18:153
79160199300,29cyclictest893110-21munin-run22:15:013
79160199300,29cyclictest860512-21sh21:15:023
79159899300,29cyclictest0-21swapper/222:53:162
791591993028,1cyclictest0-21swapper/023:58:160
791591993027,3cyclictest0-21swapper/023:08:170
791591993027,2cyclictest803193-21turbostat.cron19:30:000
791613992927,1cyclictest838717-21latency_hist20:35:017
791613992927,1cyclictest0-21swapper/721:33:167
79161399290,28cyclictest87-21ksoftirqd/722:18:147
79161399290,28cyclictest0-21swapper/719:43:187
79161399290,1cyclictest369-21systemd-journal21:05:017
791611992927,1cyclictest917855-21dump-pmu-power23:00:016
79161199290,28cyclictest0-21swapper/619:28:156
79161199290,1cyclictest898497-21debian-sa122:25:016
791606992927,1cyclictest866563-21apt-get21:28:175
791606992927,1cyclictest800505-21turbostat.cron19:25:015
79160599290,28cyclictest890190-21systemd-run22:10:014
79160599290,28cyclictest0-21swapper/423:53:164
79160599290,28cyclictest0-21swapper/422:48:194
79160599290,28cyclictest0-21swapper/422:38:174
79160599290,28cyclictest0-21swapper/422:13:174
79160599290,28cyclictest0-21swapper/421:23:174
79160599290,28cyclictest0-21swapper/419:53:174
79160599290,1cyclictest953830-21apt-get00:08:164
791601992927,1cyclictest951145-21apt-get00:03:163
791601992927,1cyclictest885418-21apt-get22:03:153
79160199290,28cyclictest795488-21apt-get19:18:143
79160199290,28cyclictest0-21swapper/320:55:023
79160199290,28cyclictest0-21swapper/320:43:163
79159899290,28cyclictest0-21swapper/200:13:182
791595992929,0cyclictest0-21swapper/121:50:021
791595992929,0cyclictest0-21swapper/121:50:021
791595992928,1cyclictest868610-21apt21:30:021
791595992928,1cyclictest0-21swapper/122:35:021
79159599291,0cyclictest0-21swapper/123:08:161
79159599290,29cyclictest311rcuc/123:15:011
79159599290,29cyclictest0-21swapper/121:33:161
79159599290,28cyclictest811275-21apt-get19:45:011
79159199290,28cyclictest0-21swapper/022:23:160
79159199290,28cyclictest0-21swapper/000:18:160
79159199290,1cyclictest0-21swapper/023:18:170
791613992827,1cyclictest861ktimers/719:33:167
791613992827,1cyclictest0-21swapper/700:18:177
791613992827,0cyclictest0-21swapper/720:18:157
791613992826,1cyclictest0-21swapper/723:40:017
79161399280,0cyclictest851rcuc/720:25:017
79160699280,27cyclictest0-21swapper/500:28:175
79160699280,0cyclictest0-21swapper/519:13:135
79160599280,1cyclictest0-21swapper/423:18:184
791601992826,1cyclictest822951-21apt-get20:08:153
791601992826,1cyclictest0-21swapper/323:43:183
791598992828,0cyclictest0-21swapper/220:08:162
791598992827,1cyclictest814265-21systemctl19:50:002
791598992827,1cyclictest0-21swapper/222:58:152
791598992826,1cyclictest825640-21apt-get20:13:172
79159899280,28cyclictest0-21swapper/220:25:022
791595992827,1cyclictest0-21swapper/123:45:011
791595992827,1cyclictest0-21swapper/120:25:011
791595992826,1cyclictest0-21swapper/100:25:011
791595992825,2cyclictest855140-21sh21:05:011
791591992828,0cyclictest0-21swapper/023:03:170
791591992827,1cyclictest779125-21munin-node19:15:010
791591992827,1cyclictest0-21swapper/020:50:010
79159199280,27cyclictest0-21swapper/019:33:160
79159199280,0cyclictest0-21swapper/000:15:000
791613992727,0cyclictest0-21swapper/723:33:177
791613992726,1cyclictest0-21swapper/721:38:147
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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