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2025-12-24 - 11:38
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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 Wed Dec 24, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291202203188,11sleep10-21swapper/119:06:501
291292185168,13sleep00-21swapper/019:06:570
292382181165,12sleep30-21swapper/319:08:203
293462175158,12sleep20-21swapper/219:09:442
295549981,3cyclictest25163-21awk21:10:000
295619962,2cyclictest0-21swapper/319:45:173
295619961,3cyclictest0-21swapper/300:35:103
295579960,5cyclictest0-21swapper/221:00:172
295549961,1cyclictest0-21swapper/022:50:110
295549960,3cyclictest7580-21munin-run21:40:010
3027250,0sleep23476-21df19:20:132
295619951,3cyclictest0-21swapper/320:10:153
295619951,2cyclictest0-21swapper/321:15:123
295619950,4cyclictest25305-21apt-get23:20:113
295619950,4cyclictest0-21swapper/320:50:123
295579950,5cyclictest0-21swapper/222:20:122
295579950,4cyclictest0-21swapper/220:05:122
295559950,5cyclictest0-21swapper/120:55:121
295549951,3cyclictest774-21snmpd00:20:050
295549951,2cyclictest0-21swapper/000:35:100
295619944,0cyclictest32122-21kworker/3:021:46:123
295619944,0cyclictest32122-21kworker/3:021:35:023
295619944,0cyclictest32122-21kworker/3:020:27:493
295619944,0cyclictest32122-21kworker/3:000:22:573
295619944,0cyclictest32122-21kworker/3:000:00:323
295619942,1cyclictest17376-21cron00:10:003
295619942,1cyclictest16955-21grep00:05:223
295619941,3cyclictest774-21snmpd20:02:433
295619941,2cyclictest774-21snmpd23:00:413
295619941,2cyclictest774-21snmpd19:44:283
295619941,2cyclictest3703-21hwlatdetect21:30:163
295619941,2cyclictest0-21swapper/320:35:123
295619941,2cyclictest0-21swapper/320:30:123
295619941,2cyclictest0-21swapper/300:15:113
295619940,4cyclictest22797-21apt-get23:15:013
295619940,4cyclictest0-21swapper/323:55:233
295619940,4cyclictest0-21swapper/323:50:113
295619940,4cyclictest0-21swapper/323:05:043
295619940,4cyclictest0-21swapper/321:55:123
295619940,4cyclictest0-21swapper/321:40:123
295619940,4cyclictest0-21swapper/321:25:123
295619940,4cyclictest0-21swapper/321:20:123
295619940,4cyclictest0-21swapper/320:55:103
295619940,4cyclictest0-21swapper/320:15:133
295619940,4cyclictest0-21swapper/319:35:113
295619940,4cyclictest0-21swapper/319:10:133
295619940,4cyclictest0-21swapper/300:30:113
295619940,3cyclictest7502-21sed22:45:013
295619940,3cyclictest7273-21users19:25:233
295619940,3cyclictest2904-21wc19:20:013
295619940,3cyclictest22904-21/usr/sbin/munin21:05:173
295619940,3cyclictest22449-21latency_hist22:10:013
295619940,3cyclictest21134-21irqstats23:10:173
295619940,3cyclictest0-21swapper/323:45:143
295619940,3cyclictest0-21swapper/323:35:123
295619940,1cyclictest12574-21latency_hist20:45:003
295579943,1cyclictest29031-21cut21:15:172
295579941,3cyclictest0-21swapper/223:40:122
295579941,2cyclictest774-21snmpd00:10:532
295579940,4cyclictest5101-21apt-get22:40:122
295579940,4cyclictest2611-21apt-get22:35:132
295579940,4cyclictest19712-21munin-run23:10:012
295579940,4cyclictest0-21swapper/223:10:132
295579940,4cyclictest0-21swapper/221:41:332
295579940,4cyclictest0-21swapper/221:22:122
295579940,4cyclictest0-21swapper/220:19:282
295579940,4cyclictest0-21swapper/219:11:322
295579940,4cyclictest0-21swapper/200:29:332
295579940,3cyclictest28288-21df23:25:122
295579940,3cyclictest0-21swapper/223:30:122
295579940,3cyclictest0-21swapper/223:30:122
295579940,1cyclictest23064-21expr22:10:162
295579940,1cyclictest14032-21ntp_states21:50:182
295579940,1cyclictest10858-21df20:40:152
295559941,2cyclictest0-21swapper/121:50:131
295559941,2cyclictest0-21swapper/121:35:121
295559941,2cyclictest0-21swapper/121:05:121
295559941,2cyclictest0-21swapper/119:20:111
295559941,2cyclictest0-21swapper/119:15:131
295559940,2cyclictest0-21swapper/122:15:131
295549944,0cyclictest0-21swapper/022:45:030
295549944,0cyclictest0-21swapper/022:16:230
295549944,0cyclictest0-21swapper/021:53:230
295549943,1cyclictest10336-21/usr/sbin/munin20:40:160
295549942,2cyclictest774-21snmpd23:17:470
295549942,1cyclictest774-21snmpd23:29:170
295549941,3cyclictest774-21snmpd22:10:350
295549941,3cyclictest774-21snmpd22:02:260
295549941,3cyclictest774-21snmpd21:11:530
295549941,3cyclictest774-21snmpd20:33:430
295549941,3cyclictest774-21snmpd20:05:580
295549941,3cyclictest774-21snmpd00:19:590
295549941,2cyclictest774-21snmpd22:26:200
295549941,2cyclictest774-21snmpd19:21:160
295549940,4cyclictest12618-21munin-run19:40:010
295549940,4cyclictest0-21swapper/022:30:130
295549940,4cyclictest0-21swapper/019:55:120
295549940,4cyclictest0-21swapper/019:45:170
295549940,3cyclictest7517-21grep23:50:010
295549940,3cyclictest32155-21aten2_r5power_p19:15:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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