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2026-03-13 - 08:34
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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 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
235009964,2cyclictest17507-21expr21:05:142
235009964,2cyclictest16489-21irqstats23:30:152
235009964,2cyclictest1579-21awk22:35:152
235009964,2cyclictest15027-21ntp_states22:10:172
235009964,2cyclictest14603-21apt-get21:00:112
235009964,2cyclictest14428-21apt-get19:55:122
235009964,2cyclictest13556-21apt-get23:45:112
235009964,2cyclictest1098-21ntp_states00:10:172
235009964,2cyclictest10326-21hddtemp_smartct19:45:132
235009964,2cyclictest10326-21hddtemp_smartct19:45:132
235009964,2cyclictest0-21swapper/223:25:122
235009964,2cyclictest0-21swapper/222:25:122
235009964,2cyclictest0-21swapper/200:20:092
235009964,1cyclictest4707-21apt-get20:40:102
235009964,1cyclictest29542-21apt-get19:20:102
235009963,3cyclictest27876-21cat19:15:162
235009963,3cyclictest15770-21sh22:42:202
235009963,2cyclictest9647-21apt-get20:50:112
235009963,2cyclictest4531-21apt-get19:35:112
235009963,2cyclictest32704-21diskstats20:30:142
235009963,2cyclictest23739-21apt-get23:50:122
235009963,2cyclictest20579-21sh22:45:092
235009963,2cyclictest20260-21ntp_states23:00:162
235009963,2cyclictest19550-21sh21:10:022
235009963,2cyclictest17753-21hddtemp_smartct20:00:132
235009962,4cyclictest8641-21/usr/sbin/munin22:55:162
235009962,4cyclictest0-21swapper/222:20:112
234969960,3cyclictest4502-21perf21:50:010
234969960,3cyclictest2003-21awk20:35:000
235049955,0cyclictest5420-21kworker/3:221:50:083
235049955,0cyclictest5420-21kworker/3:220:54:113
235049955,0cyclictest5420-21kworker/3:220:20:333
235049955,0cyclictest5420-21kworker/3:219:35:483
235049955,0cyclictest5420-21kworker/3:219:24:363
235049955,0cyclictest5420-21kworker/3:200:15:403
235049950,5cyclictest0-21swapper/323:35:263
235049950,5cyclictest0-21swapper/323:17:143
235049950,5cyclictest0-21swapper/322:50:013
235049950,5cyclictest0-21swapper/300:37:073
235049950,0cyclictest0-21swapper/322:05:133
235009953,2cyclictest29768-21hostname20:25:122
235009953,2cyclictest28960-21sh23:05:082
235009953,2cyclictest27234-21apt-get20:20:112
234979951,3cyclictest0-21swapper/123:45:111
234979951,3cyclictest0-21swapper/123:00:111
234979951,3cyclictest0-21swapper/120:45:111
234979951,2cyclictest0-21swapper/122:50:111
234979951,2cyclictest0-21swapper/121:50:121
234979951,2cyclictest0-21swapper/119:55:121
234979951,2cyclictest0-21swapper/100:30:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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