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2026-03-13 - 05:41
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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 50 highest latencies:
System rack5slot2.osadl.org (updated Fri Mar 13, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
211012239223,11sleep10-21swapper/119:05:071
229762196150,41sleep00-21swapper/019:05:290
232542188174,10sleep30-21swapper/319:09:063
230772179161,13sleep20-21swapper/219:06:482
27752780,0sleep10-21swapper/123:55:161
253762470,0sleep10-21swapper/119:10:191
317902440,0sleep30-21swapper/321:46:553
222262440,0sleep20-21swapper/200:36:442
235642430,0sleep30-21swapper/321:43:113
89832120,0sleep30-21swapper/322:23:223
2349699113,4cyclictest19336-21perf21:10:010
142372110,0sleep30-21swapper/322:41:233
235009996,2cyclictest27478-21apt-get23:20:122
234969993,3cyclictest13062-21idleruntime-cro23:44:590
235009987,1cyclictest7178-21apt-get20:45:102
235009986,2cyclictest22000-21apt-get00:05:122
235009985,2cyclictest6526-21apt-get21:35:112
235009985,2cyclictest28684-21apt-get21:30:122
235009985,2cyclictest15284-21apt-get21:55:132
235009984,4cyclictest0-21swapper/221:20:132
235009984,3cyclictest30171-21apt-get00:25:152
235009975,2cyclictest4482-21munin-run21:50:012
235009975,2cyclictest4302-21apt19:35:012
235009975,2cyclictest30121-21apt-get21:15:102
235009975,2cyclictest2220-21apt-get20:35:122
235009975,2cyclictest1835-21awk19:30:002
235009975,1cyclictest25517-21apt-get22:00:122
235009975,1cyclictest12115-21apt-get20:55:122
235009974,2cyclictest4797-21ntp_states23:40:172
235009974,2cyclictest25152-21grep22:15:152
235009974,2cyclictest24449-21hddtemp_smartct19:10:142
235009974,2cyclictest22429-21apt-get22:30:112
235009974,2cyclictest21829-21latency_hist20:10:012
235009974,2cyclictest14759-21munin-run21:55:012
235009974,2cyclictest11957-21apt-get19:50:102
235009973,4cyclictest28861-21ssh23:36:042
235009973,4cyclictest10827-21ssh22:08:372
235009973,3cyclictest13080-21ssh00:16:052
235009973,2cyclictest17667-21grep21:40:142
235009973,2cyclictest12415-21fschecks_count00:00:132
235009972,5cyclictest0-21swapper/223:15:182
235049960,0cyclictest0-21swapper/300:23:443
235009965,1cyclictest22040-21apt-get20:10:022
235009965,1cyclictest0-21swapper/222:50:112
235009964,2cyclictest8222-21ntpq23:10:162
235009964,2cyclictest7786-21apt00:30:112
235009964,2cyclictest7022-21apt-get19:40:122
235009964,2cyclictest2768-21irqstats23:55:162
235009964,2cyclictest25823-21memory20:15:162
235009964,2cyclictest19030-21diskstats21:25:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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