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2026-07-29 - 05:00
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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 highest latencies:
System rackdslot0.osadl.org (updated Wed Jul 29, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17808993028,1cyclictest0-21swapper/219:20:152
1780199226,13cyclictest0-21swapper/121:15:161
1779999220,20cyclictest870-21systemd-logind21:26:520
17808992118,2cyclictest26007-21sshd23:11:492
17799992119,1cyclictest9-21ksoftirqd/000:20:010
1780199202,17cyclictest15817-21tr22:55:151
1780199200,1cyclictest3450-21gsd-color21:30:131
17799992016,1cyclictest0-21swapper/020:21:440
1779999200,18cyclictest455-21plymouthd20:40:190
1780899192,2cyclictest2872-21systemd-logind00:22:512
17808991917,1cyclictest0-21swapper/221:40:002
17808991916,2cyclictest20804-21munin-run21:10:002
17808991915,3cyclictest8305-21cat19:50:012
1780899191,17cyclictest30692-21cpuspeed_turbos20:30:142
1780899190,5cyclictest0-21swapper/219:31:552
17801991916,2cyclictest27002-21cat00:10:161
1779999192,1cyclictest0-21swapper/022:00:180
1779999190,1cyclictest0-21swapper/023:13:310
1780899182,15cyclictest0-21swapper/221:56:012
17808991816,1cyclictest0-21swapper/222:20:182
17808991816,1cyclictest0-21swapper/219:55:132
17808991815,2cyclictest23350-21sessionclean23:09:002
17808991815,2cyclictest10177-21cpuspeed_turbos22:45:142
17808991815,1cyclictest0-21swapper/221:05:002
17808991814,3cyclictest3985-21H222:10:212
1780899181,16cyclictest2351-21kernelversion20:35:172
1780899180,17cyclictest24173-21cut22:10:182
1780899180,17cyclictest0-21swapper/219:12:502
1780899180,16cyclictest0-21swapper/222:58:122
1780199187,10cyclictest559-21kworker/1:200:05:001
17801991816,1cyclictest31127-21wc19:30:211
17801991816,1cyclictest0-21swapper/121:54:351
17801991816,1cyclictest0-21swapper/121:35:141
17801991815,2cyclictest14043-21nfsd422:50:171
17801991815,2cyclictest14043-21nfsd422:50:171
17801991814,2cyclictest3976-21H222:10:211
1780199180,3cyclictest1300-21lxd23:30:381
1780199180,2cyclictest3981-21H222:10:211
17799991816,1cyclictest0-21swapper/023:30:290
17799991815,1cyclictest0-21swapper/021:49:020
17799991814,3cyclictest0-21swapper/021:35:180
1779999181,16cyclictest1856-21systemd-udevd22:22:510
1779999181,16cyclictest1100-21snmpd23:20:010
1779999180,3cyclictest426-21systemd-udevd23:02:520
1779999180,3cyclictest0-21swapper/020:50:160
1779999180,17cyclictest3985-21H222:10:210
1779999180,0cyclictest0-21swapper/000:00:370
17808991715,1cyclictest0-21swapper/223:53:222
17808991715,1cyclictest0-21swapper/223:30:182
17808991714,2cyclictest8703-21nfsd422:40:182
17808991714,2cyclictest4099-21H222:10:212
17808991714,2cyclictest3979-21H222:10:212
17808991714,2cyclictest3279-21ls19:40:142
17808991714,2cyclictest29821-21cat21:25:142
17808991714,2cyclictest20259-21timerwakeupswit23:00:222
17808991714,2cyclictest15588-21sendmail_mailqu20:00:192
17808991714,2cyclictest10285-21expr19:50:222
17808991713,3cyclictest3983-21H222:10:212
1780899171,15cyclictest8117-21grep00:35:132
1780899170,2cyclictest3989-21H222:10:212
1780899170,2cyclictest24077-21tr21:15:162
1780899170,2cyclictest1761-21systemd00:10:512
1780899170,2cyclictest1515-21lxd21:12:502
1780899170,2cyclictest11231-21cron23:45:002
1780899170,2cyclictest10108-21/usr/sbin/munin20:50:142
1780899170,1cyclictest3981-21H222:10:212
1780899170,16cyclictest7723-21sed23:35:222
1780899170,16cyclictest7000-21netstat21:40:182
1780899170,16cyclictest6121-21ls22:35:202
1780899170,16cyclictest3989-21H222:10:212
1780899170,16cyclictest3981-21H222:10:212
1780899170,16cyclictest3979-21H222:10:212
1780899170,16cyclictest25414-21cat20:20:132
1780899170,16cyclictest18978-21postgres22:04:142
1780899170,16cyclictest18864-21cat23:55:212
1780899170,16cyclictest15146-21chrt22:54:552
1780899170,16cyclictest15146-21chrt22:54:552
1780899170,16cyclictest0-21swapper/223:15:152
1780899170,16cyclictest0-21swapper/221:45:162
1780199172,1cyclictest0-21swapper/122:00:141
17801991716,1cyclictest0-21swapper/120:19:371
17801991715,1cyclictest0-21swapper/119:42:091
17801991714,2cyclictest3991-21H222:10:211
17801991714,2cyclictest32485-21df00:20:141
17801991714,2cyclictest32323-21munin-run23:25:011
17801991714,2cyclictest29702-21ps22:20:201
17801991714,2cyclictest26529-21memory22:15:191
17801991714,2cyclictest11325-21nfsd422:45:201
1780199170,2cyclictest399-20systemd-journal20:49:561
1780199170,2cyclictest3979-21H222:10:211
1780199170,2cyclictest19650-21https22:05:021
1780199170,2cyclictest19469-21date20:10:001
1780199170,2cyclictest16368-21perf20:05:011
1780199170,2cyclictest1515-21lxd21:20:501
1780199170,16cyclictest8957-21expr19:50:151
1780199170,16cyclictest362-21fschecks_count19:35:131
1780199170,16cyclictest29423-21apache_volume21:25:121
1780199170,16cyclictest28629-21sendmail_mailqu23:15:221
1780199170,16cyclictest23255-21cut00:05:171
1780199170,16cyclictest22039-21cat21:10:171
1780199170,16cyclictest21074-21smartctl20:10:191
1780199170,16cyclictest20783-21cron21:10:001
1780199170,16cyclictest18947-21fschecks_count23:00:161
1780199170,16cyclictest18535-21ntp_states23:55:191
1780199170,16cyclictest15588-21apache_processe21:00:111
1780199170,16cyclictest13919-21munin-plugin-st20:00:011
1780199170,16cyclictest11352-21munin-plugin-st23:45:001
1780199170,15cyclictest4099-21H222:10:211
1780199170,15cyclictest0-21swapper/120:40:141
17799991715,1cyclictest18641-21expr19:10:170
17799991714,2cyclictest22612-21ntp_states21:10:200
17799991714,2cyclictest19880-21apache_volume22:05:120
17799991714,2cyclictest17988-21nfsd420:05:180
17799991714,2cyclictest16617-21latency_hist22:00:010
17799991714,2cyclictest10389-21expr22:45:150
17799991713,3cyclictest30712-21awk19:30:180
1779999170,2cyclictest7293-21nfsd423:35:190
1779999170,2cyclictest26649-21grep00:10:130
1779999170,2cyclictest24882-21latency21:15:200
1779999170,2cyclictest2069-21systemd-udevd19:44:520
1779999170,2cyclictest19549-21expr21:05:180
1779999170,2cyclictest13261-21smtp19:56:020
1779999170,1cyclictest0-21swapper/000:08:100
1779999170,16cyclictest8603-21expr00:35:130
1779999170,16cyclictest8528-21/usr/sbin/munin19:50:130
1779999170,16cyclictest3989-21H222:10:210
1779999170,16cyclictest3981-21H222:10:210
1779999170,16cyclictest3450-21gsd-color23:40:120
1779999170,16cyclictest27184-21cat19:25:140
1779999170,16cyclictest26802-21grep22:15:200
1779999170,16cyclictest2583-21munin-run23:30:010
1779999170,16cyclictest22066-21nfsd419:15:210
1779999170,16cyclictest18418-21awk23:55:180
1779999170,16cyclictest15591-21apache_volume22:55:130
1779999170,16cyclictest1377-21lxd00:24:380
1779999170,16cyclictest0-21swapper/023:09:510
17808991614,1cyclictest13280-21expr20:55:162
17808991614,1cyclictest0-21swapper/222:15:152
17808991614,1cyclictest0-21swapper/220:05:142
17808991614,1cyclictest0-21swapper/219:25:182
1780899160,2cyclictest8722-21awk20:45:192
1780899160,1cyclictest0-21swapper/223:22:092
1780899160,15cyclictest30943-21/usr/sbin/munin22:25:092
1780899160,15cyclictest30943-21/usr/sbin/munin22:25:092
1780899160,15cyclictest28598-21http_loadtime20:25:162
1780899160,15cyclictest22506-21grep20:15:162
1780899160,15cyclictest19148-21python322:05:012
1780899160,15cyclictest0-21swapper/223:48:102
1780899160,15cyclictest0-21swapper/221:20:142
1780899160,15cyclictest0-21swapper/220:10:142
1780899160,15cyclictest0-21swapper/200:00:162
17801991615,1cyclictest0-21swapper/122:25:111
17801991615,1cyclictest0-21swapper/122:25:111
17801991614,1cyclictest163912chrt23:50:531
17801991614,1cyclictest0-21swapper/121:45:151
17801991614,1cyclictest0-21swapper/121:40:101
17801991614,1cyclictest0-21swapper/119:45:201
17801991614,1cyclictest0-21swapper/119:25:141
17801991614,1cyclictest0-21swapper/119:20:211
17801991614,1cyclictest0-21swapper/119:15:211
1780199161,14cyclictest27962-21cpuspeed_turbos20:25:141
1780199160,2cyclictest11669-21apache_volume23:45:141
1780199160,1cyclictest0-21swapper/120:35:021
1780199160,1cyclictest0-21swapper/100:25:141
1780199160,15cyclictest7679-21expr22:40:131
1780199160,15cyclictest22979-21grep22:10:131
1780199160,15cyclictest21988-21kernelversion23:05:191
1780199160,15cyclictest19910-21sed19:10:251
1780199160,15cyclictest1363-21apache_processe22:30:111
1780199160,15cyclictest12958-21grep20:55:161
1780199160,15cyclictest0-21swapper/123:25:111
1780199160,15cyclictest0-21swapper/123:10:161
1780199160,15cyclictest0-21swapper/122:35:111
1780199160,15cyclictest0-21swapper/121:55:141
1780199160,15cyclictest0-21swapper/120:50:191
1780199160,15cyclictest0-21swapper/120:21:531
17799991614,1cyclictest7387-21apt-get20:45:140
17799991614,1cyclictest30285-21cat23:20:150
17799991614,1cyclictest22681-21cat20:15:150
17799991614,1cyclictest0-21swapper/023:45:170
17799991614,1cyclictest0-21swapper/022:35:190
17799991614,1cyclictest0-21swapper/021:40:130
17799991614,1cyclictest0-21swapper/019:35:140
17799991614,1cyclictest0-21swapper/019:20:010
17799991613,2cyclictest2545-21grep22:30:170
17799991613,2cyclictest1145-21ntpq21:30:190
1779999160,2cyclictest11238-21apache_accesses21:50:140
1779999160,1cyclictest13541-21smartctl22:50:150
1779999160,1cyclictest13541-21smartctl22:50:150
1779999160,1cyclictest0-21swapper/020:05:010
1779999160,15cyclictest7393-21apache_volume22:40:120
1779999160,15cyclictest31788-21/usr/sbin/munin22:25:140
1779999160,15cyclictest31788-21/usr/sbin/munin22:25:140
1779999160,15cyclictest29271-21cut21:25:010
1779999160,15cyclictest23580-21cat22:10:160
1779999160,15cyclictest15587-21apache_accesses21:00:110
1779999160,15cyclictest14222-21ntp_states20:55:210
1779999160,15cyclictest0-21swapper/020:30:130
1779999160,15cyclictest0-21swapper/020:25:180
1779999160,15cyclictest0-21swapper/000:30:170
1780899150,14cyclictest0-21swapper/221:50:092
17799991514,1cyclictest20955-21expr20:10:180
17799991513,1cyclictest0-21swapper/019:45:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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