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2026-06-13 - 09:29
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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
Characteristics of the 100 highest latencies:
System rackdslot0.osadl.org (updated Sat Jun 13, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6475992818,10cyclictest0-21swapper/122:06:311
6479992617,9cyclictest0-21swapper/221:15:132
647099251,19cyclictest0-21swapper/000:09:590
647999220,18cyclictest0-21swapper/219:27:012
647099220,8cyclictest0-21swapper/023:44:000
647999210,18cyclictest6565-21apt-config22:00:002
647599210,18cyclictest0-21swapper/122:01:081
647999204,1cyclictest0-21swapper/221:10:152
6479992017,2cyclictest0-21swapper/219:20:132
647999192,16cyclictest13124-21expr22:10:132
647999192,16cyclictest0-21swapper/222:36:042
647599192,16cyclictest30337-21chrt23:37:161
6475991916,2cyclictest24749-21tr19:40:121
6475991915,1cyclictest0-21swapper/123:25:011
6475991914,4cyclictest399-20systemd-journal19:25:011
647599190,1cyclictest201rcuc/123:00:131
647599190,18cyclictest399-20systemd-journal22:19:561
647099192,2cyclictest4312-21expr22:50:180
6470991914,4cyclictest1718-21cpuspeed_turbos23:45:120
647999182,15cyclictest71262chrt21:01:552
6479991816,1cyclictest0-21swapper/221:09:112
6479991814,2cyclictest14607-21nfsd400:05:222
6479991813,4cyclictest26276-21sh22:35:002
6479991813,4cyclictest0-21swapper/223:35:182
647999181,2cyclictest11739-21chrt19:19:042
647999181,16cyclictest27731-21smtpd20:41:372
647999181,15cyclictest0-21swapper/222:40:122
647599182,15cyclictest0-21swapper/120:00:171
6475991815,2cyclictest20166-21grep21:25:141
6475991814,3cyclictest0-21swapper/123:51:221
647599180,17cyclictest3987-21H222:10:211
6470991816,1cyclictest0-21swapper/020:00:220
6470991810,5cyclictest1100-21snmpd21:09:010
647099180,16cyclictest6249-21python322:00:010
647099180,16cyclictest3981-21H222:10:210
6479991715,1cyclictest777-21cpuspeed_turbos21:50:142
6479991715,1cyclictest0-21swapper/219:10:022
6479991715,1cyclictest0-21swapper/200:14:532
6479991714,2cyclictest8049-21expr23:55:122
6479991714,2cyclictest28804-21/usr/sbin/munin20:45:132
6479991714,2cyclictest27612-21expr00:30:122
6479991714,2cyclictest26894-21idleruntime-cro19:45:012
6479991714,2cyclictest24792-21python323:30:002
6479991714,2cyclictest18503-21plymouth23:15:192
6479991714,2cyclictest13043-21sed23:05:212
6479991714,2cyclictest10786-21memory22:05:162
647999171,1cyclictest0-21swapper/223:45:192
647999171,1cyclictest0-21swapper/219:30:102
647999171,15cyclictest0-21swapper/220:05:192
647999170,2cyclictest6972-21gpg-connect-age22:00:022
647999170,2cyclictest5209-21/usr/sbin/munin23:50:132
647999170,2cyclictest3058-21rs:main2
647999170,2cyclictest28371-21sed19:45:162
647999170,2cyclictest24936-21cstates00:25:132
647999170,2cyclictest1945-21latency_hist20:55:012
647999170,2cyclictest16841-21sed23:15:012
647999170,2cyclictest1300-21lxd20:12:512
647999170,16cyclictest863-21avahi-daemon19:35:212
647999170,16cyclictest6314-21expr22:55:142
647999170,16cyclictest4165-21grep20:00:142
647999170,16cyclictest27443-21https21:40:002
647999170,16cyclictest24787-21expr21:35:132
647999170,16cyclictest23450-21fschecks_time20:35:142
647999170,16cyclictest22487-21expr22:25:182
647999170,16cyclictest20738-21chrt22:23:572
647999170,16cyclictest20341-21proc_pri21:25:172
647999170,16cyclictest19922-21cat23:20:132
647999170,16cyclictest1829-21systemd-journal20:25:012
647999170,16cyclictest1829-21systemd-journal20:25:012
647999170,16cyclictest1280-21if_lxdbr019:55:172
647999170,16cyclictest0-21swapper/200:35:102
647599172,9cyclictest15375-21logrotate00:07:131
6475991715,1cyclictest15951-21ls19:25:171
6475991715,1cyclictest0-21swapper/123:47:201
6475991714,2cyclictest870-21systemd-logind23:16:521
6475991714,2cyclictest3987-21H222:10:211
6475991714,2cyclictest31290-21ls22:40:201
6475991714,2cyclictest2872-21systemd-logind00:04:511
6475991714,2cyclictest25360-21touch23:30:001
6475991714,2cyclictest21993-21awk19:35:161
6475991714,2cyclictest19500-21sed22:20:161
6475991714,2cyclictest13992-21smtp20:17:441
6475991714,2cyclictest10678-21apache_accesses21:10:101
647599171,2cyclictest5056-21kworker/1:121:31:171
647599171,15cyclictest4099-21H222:10:211
647599170,3cyclictest1035-21thermald00:25:201
647599170,3cyclictest0-21swapper/122:26:081
647599170,2cyclictest6254-21python322:00:011
647599170,2cyclictest29107-21timerandwakeup19:45:211
647599170,2cyclictest2174-21timerandwakeup19:55:221
647599170,2cyclictest17060-21if_enp1s000:10:151
647599170,16cyclictest7802-21sendmail_mailst20:05:201
647599170,16cyclictest5410-21munin-run22:55:001
647599170,16cyclictest3989-21H222:10:211
647599170,16cyclictest29820-21latency20:45:161
647599170,16cyclictest25249-21uname21:35:161
647599170,16cyclictest22061-21expr00:20:121
647599170,16cyclictest11266-21/usr/sbin/munin23:05:111
647599170,16cyclictest1118-21munin-plugin-st23:45:001
647599170,15cyclictest0-21swapper/100:19:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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