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2024-07-27 - 04:04
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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 rackeslot8.osadl.org (updated Fri Jul 26, 2024 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26092312300,1sleep20-21swapper/212:20:002
2178679992623,2cyclictest2456423-21systemd-run10:35:000
2178689992421,1cyclictest0-21swapper/308:49:593
2178684992420,3cyclictest496-21avahi-daemon08:20:002
2178689992219,1cyclictest0-21swapper/310:20:013
2178679992219,2cyclictest0-21swapper/008:35:000
2178689992118,1cyclictest0-21swapper/310:15:003
217868499216,8cyclictest2418193-21munin-run10:10:012
2178684992118,2cyclictest507-21systemd-logind09:53:032
2178679992118,2cyclictest2184707-21latency_hist07:15:010
2178679992118,2cyclictest0-21swapper/011:00:000
2178679992118,2cyclictest0-21swapper/007:20:010
2178679992118,2cyclictest0-21swapper/007:20:000
2178684992017,2cyclictest792-21gdbus08:57:152
2178684992017,2cyclictest2433364-21latency_hist10:20:002
2178684992015,3cyclictest2558342-21kthreadcore11:40:182
2178689991916,1cyclictest0-21swapper/310:00:013
2178689991916,1cyclictest0-21swapper/309:53:033
2178689991916,1cyclictest0-21swapper/309:40:013
2178684991916,2cyclictest2532471-21latency_hist11:25:002
2178680991914,3cyclictest2408872-21grep10:00:321
2178679991916,2cyclictest2547915-21tr11:35:100
2178679991915,2cyclictest2308654-21cpuspeed_turbos08:55:140
2178689991816,1cyclictest0-21swapper/311:30:193
2178689991814,1cyclictest0-21swapper/309:25:013
2178689991814,1cyclictest0-21swapper/309:25:003
2178684991814,3cyclictest2485058-21unixbench_multi10:50:282
2178680991815,2cyclictest757-21systemctl12:30:001
2178679991814,2cyclictest2517791-21gltestperf11:15:140
2178679991814,2cyclictest0-21swapper/011:55:010
2178679991814,2cyclictest0-21swapper/010:10:000
2178679991814,2cyclictest0-21swapper/009:55:010
2178679991813,4cyclictest2340178-21unixbench_multi09:15:220
2178679991811,5cyclictest361-21systemd-journal10:25:010
22750362170,1sleep10-21swapper/108:25:161
2178689991714,1cyclictest0-21swapper/312:29:593
2178689991714,1cyclictest0-21swapper/312:20:003
2178689991714,1cyclictest0-21swapper/311:40:173
2178689991714,1cyclictest0-21swapper/310:59:593
2178689991714,1cyclictest0-21swapper/309:40:183
2178689991714,1cyclictest0-21swapper/309:30:233
2178684991714,2cyclictest2533130-21ps11:25:172
2178684991714,2cyclictest2517344-21latency_hist11:15:002
2178684991714,2cyclictest2223293-21turbostat.cron07:45:002
2178684991713,3cyclictest0-21swapper/210:05:002
2178684991712,3cyclictest2266260-21cpuspeed_turbos08:20:132
2178684991711,5cyclictest3206876-21kworker/u8:2-ext4-rsv-conversion07:15:002
2178680991715,1cyclictest2357258-21latency_hist09:30:011
2178680991715,1cyclictest2184656-21cron07:15:011
2178680991713,3cyclictest2562660-21cron11:45:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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