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2026-04-05 - 13:29
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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 Sun Apr 05, 2026 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
181612207192,11sleep10-21swapper/119:08:361
182022188172,12sleep00-21swapper/019:09:080
179492183167,12sleep30-21swapper/319:05:533
18074210890,13sleep20-21swapper/219:07:282
171642480,0sleep30-21swapper/323:33:323
15832440,0sleep10-21swapper/122:06:221
184619990,8cyclictest32007-21python22:05:212
184619990,1cyclictest27898-21munin-run23:55:002
184619990,1cyclictest13833-21ssh22:28:372
184619990,1cyclictest13497-21ssh23:00:132
184619981,6cyclictest0-21swapper/223:40:122
184619981,1cyclictest15484-21cpuspeed_turbos22:45:142
184619980,8cyclictest0-21swapper/221:25:122
184619980,7cyclictest13277-21ssh23:15:172
184619980,1cyclictest5837-21ntp_states00:15:172
184619980,1cyclictest3495-21grep23:10:202
184619980,1cyclictest31604-21awk23:25:002
184619980,1cyclictest31464-21apt19:35:012
184619980,1cyclictest3093-21df00:30:132
184619980,1cyclictest2913-21ssh23:58:212
184619980,1cyclictest2644-21ssh21:20:122
184619980,1cyclictest25700-21ssh00:25:152
184619980,1cyclictest24736-21ssh21:15:132
184619980,1cyclictest24591-21grep21:30:182
184619980,1cyclictest24264-21munin-run00:25:002
184619980,1cyclictest24039-21dump-pmu-power19:20:002
184619980,1cyclictest21781-21chrt00:39:442
184619980,1cyclictest205-21systemd-journal20:20:002
184619980,1cyclictest18852-21perf20:15:002
184619980,1cyclictest16583-21ssh22:30:032
184619980,1cyclictest1502-21sendmail19:40:002
184619980,1cyclictest10749-21sed19:55:212
184619980,1cyclictest0-21swapper/222:50:202
184619980,1cyclictest0-21swapper/219:45:102
184529980,4cyclictest24070-21basename19:20:010
184619972,1cyclictest4342-21cpu20:50:132
184619972,1cyclictest29495-21ssh22:04:522
184619972,1cyclictest29495-21ssh22:04:522
184619971,1cyclictest802-21snmpd19:13:232
184619971,1cyclictest26441-21chrt19:24:092
184619971,1cyclictest23672-21awk21:45:212
184619971,1cyclictest14201-21ssh21:10:052
184619971,1cyclictest0-21swapper/223:25:132
184619971,1cyclictest0-21swapper/220:30:122
184619971,1cyclictest0-21swapper/220:20:122
184619971,0cyclictest0-21swapper/219:40:112
184619970,2cyclictest0-21swapper/223:05:152
184619970,1cyclictest8884-21perl23:45:142
184619970,1cyclictest8029-21sh22:10:112
184619970,1cyclictest6701-21df00:00:132
184619970,1cyclictest6307-21ssh21:37:162
184619970,1cyclictest5673-21perl22:40:142
184619970,1cyclictest3760-21df_inode22:55:122
184619970,1cyclictest32409-21perl20:40:112
184619970,1cyclictest31454-21awk20:40:002
184619970,1cyclictest2983-21ntp_states20:45:172
184619970,1cyclictest28995-21apt19:30:012
184619970,1cyclictest28516-21ssh22:20:112
184619970,1cyclictest27094-21rm22:35:122
184619970,1cyclictest26585-21ssh22:19:092
184619970,1cyclictest24038-21apt-get20:25:132
184619970,1cyclictest20661-21df_inode23:35:132
184619970,1cyclictest18525-21grep00:05:212
184619970,1cyclictest16022-21taskset20:05:502
184619970,1cyclictest13897-21apt20:05:002
184619970,1cyclictest13754-21chrt21:08:582
184619970,1cyclictest12103-21cut21:40:142
184619970,1cyclictest11424-21python21:55:182
184619970,1cyclictest11387-21munin-run21:05:012
184619970,1cyclictest11313-21ntp_states23:30:182
184619970,1cyclictest1127-21ssh21:50:192
184619970,1cyclictest0-21swapper/219:50:122
184529973,4cyclictest17726-21perf23:50:010
184529970,3cyclictest23812-21munin-run20:25:000
184649960,5cyclictest0-21swapper/322:20:113
184619960,1cyclictest7016-21expr20:55:122
184619960,1cyclictest26964-21cpuspeed_turbos00:10:122
184529964,1cyclictest3-21ksoftirqd/022:45:120
184529960,6cyclictest12920-21cron23:00:010
24123250,0sleep30-21swapper/323:36:333
184649955,0cyclictest616-21kworker/3:223:55:523
184649955,0cyclictest616-21kworker/3:200:29:283
184649950,5cyclictest0-21swapper/322:28:293
184649950,4cyclictest2527-21/usr/sbin/munin00:30:143
184649950,4cyclictest0-21swapper/321:25:123
184569951,3cyclictest0-21swapper/122:30:021
184569951,2cyclictest0-21swapper/119:50:121
184569951,2cyclictest0-21swapper/119:10:101
184569950,5cyclictest0-21swapper/122:29:521
184569950,5cyclictest0-21swapper/122:14:011
184569950,5cyclictest0-21swapper/121:00:061
184569950,5cyclictest0-21swapper/119:40:211
184529950,5cyclictest31651-21cut20:40:010
184529950,5cyclictest26509-21cron19:25:000
10248250,0sleep00-21swapper/022:42:210
184649944,0cyclictest616-21kworker/3:223:11:053
184649944,0cyclictest616-21kworker/3:200:07:043
184649944,0cyclictest0-21swapper/323:50:243
184649944,0cyclictest0-21swapper/322:42:523
184649944,0cyclictest0-21swapper/322:16:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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