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2026-01-11 - 16:26
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Sun Jan 11, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28556993030,0cyclictest0-21swapper/210:35:152
2855599240,23cyclictest455-21plymouthd10:30:151
28554992214,4cyclictest0-21swapper/010:13:450
2855599213,15cyclictest0-21swapper/109:37:501
2855599212,16cyclictest0-21swapper/109:10:011
28555992117,3cyclictest0-21swapper/111:52:541
28555992117,3cyclictest0-21swapper/111:34:121
28556992017,2cyclictest0-21swapper/207:54:482
2855599203,16cyclictest0-21swapper/109:00:581
28555992016,3cyclictest0-21swapper/112:15:111
28555992016,3cyclictest0-21swapper/110:17:071
2855599200,17cyclictest0-21swapper/110:37:331
2855499203,13cyclictest8472-21munin-run12:20:010
2855699193,1cyclictest18368-21expr08:45:142
2855699193,15cyclictest0-21swapper/210:53:032
2855699191,17cyclictest863-21avahi-daemon11:50:212
2855699190,3cyclictest3979-21H222:10:212
2855699190,16cyclictest3981-21H222:10:212
2855599192,3cyclictest0-21swapper/107:26:561
2855599192,2cyclictest5342-21awk11:10:181
2855599192,16cyclictest0-21swapper/108:48:241
28555991916,2cyclictest32264-21fschecks_time12:00:141
2855599190,3cyclictest0-21swapper/111:48:531
2855599190,19cyclictest0-21swapper/108:16:491
28554991917,1cyclictest9-21ksoftirqd/008:30:490
28554991917,1cyclictest0-21swapper/012:12:070
2855499190,16cyclictest3989-21H222:10:210
2855699182,1cyclictest11882-21sh11:24:592
2855699182,15cyclictest212182sleep210:42:192
28556991816,1cyclictest27789-21expr08:05:132
28556991816,1cyclictest0-21swapper/210:00:202
28556991816,1cyclictest0-21swapper/208:30:162
28556991816,1cyclictest0-21swapper/207:37:492
28556991815,2cyclictest20472-21cpuspeed_turbos09:45:132
28556991814,2cyclictest3981-21H222:10:212
2855699181,16cyclictest31911-21sessionclean09:09:012
2855699180,2cyclictest3989-21H222:10:212
2855699180,17cyclictest3989-21H222:10:212
2855699180,17cyclictest1521-21lxd12:10:412
2855699180,15cyclictest3983-21H222:10:212
2855599182,2cyclictest30101-21cat10:00:201
2855599182,1cyclictest0-21swapper/109:30:011
2855599182,15cyclictest0-21swapper/111:55:141
28555991817,1cyclictest21-21ksoftirqd/107:33:301
28555991815,2cyclictest3989-21H222:10:211
28555991815,2cyclictest2809-21http_loadtime07:20:151
28555991815,2cyclictest24656-21grep10:50:141
28555991815,2cyclictest2155-21cstates10:10:141
28555991815,2cyclictest14963-21expr12:30:131
28555991815,2cyclictest14077-21grep07:40:141
2855599181,2cyclictest9825-21grep12:20:111
2855599181,1cyclictest0-21swapper/107:15:131
2855599180,1cyclictest0-21swapper/108:20:031
2855599180,18cyclictest0-21swapper/108:06:571
2855599180,17cyclictest6776-21ls09:20:141
2855599180,17cyclictest28394-21cat10:00:011
2855599180,17cyclictest27174-21cat08:05:011
2855599180,15cyclictest20216-21latency_hist11:40:011
2855499183,1cyclictest0-21swapper/010:16:490
2855499182,15cyclictest5922-21timerandwakeup11:10:210
28554991816,1cyclictest0-21swapper/008:40:150
2855499180,4cyclictest0-21swapper/009:32:210
2855499180,3cyclictest28504-21cat08:05:180
2855499180,2cyclictest3981-21H222:10:210
2855499180,17cyclictest455-21plymouthd12:05:190
2855699172,1cyclictest28-21ksoftirqd/211:45:582
28556991715,1cyclictest0-21swapper/210:55:212
28556991714,2cyclictest8860-21grep07:30:152
28556991714,2cyclictest8771-21awk08:25:212
28556991714,2cyclictest863-21avahi-daemon09:25:202
28556991714,2cyclictest843-21systemd-network09:02:382
28556991714,2cyclictest5712-21expr07:25:152
28556991714,2cyclictest4876-21/usr/sbin/munin10:15:172
28556991714,2cyclictest3985-21H222:10:212
28556991714,2cyclictest30432-21/usr/sbin/munin11:00:172
28556991714,2cyclictest2872-21systemd-logind12:02:522
28556991714,2cyclictest21249-21df11:40:142
28556991714,2cyclictest18331-21df11:35:132
28556991714,2cyclictest15641-21cpuspeed_turbos08:40:132
28556991714,2cyclictest14914-21expr12:30:122
28556991714,2cyclictest14409-21kernelversion10:30:162
28556991714,2cyclictest11969-21apache_processe09:30:112
28556991713,3cyclictest0-21swapper/209:58:102
28556991713,2cyclictest18324-21http_loadtime09:40:152
28556991713,2cyclictest18324-21http_loadtime09:40:152
2855699170,2cyclictest3985-21H222:10:212
2855699170,2cyclictest30989-21cat08:10:142
2855699170,2cyclictest2251-21/usr/sbin/munin08:15:202
2855699170,1cyclictest0-21swapper/210:27:382
2855699170,1cyclictest0-21swapper/207:15:182
2855699170,16cyclictest8251-21threads09:20:232
2855699170,16cyclictest4015-21cat11:10:012
2855699170,16cyclictest3989-21H222:10:212
2855699170,16cyclictest3979-21H222:10:212
2855699170,16cyclictest25643-21postgres08:00:162
2855699170,16cyclictest24082-21/usr/sbin/munin08:55:102
2855699170,16cyclictest1856-21systemd-udevd09:18:512
2855699170,16cyclictest17988-21nvmesmart_nvme007:45:202
2855699170,16cyclictest16222-21pzem_power09:35:212
2855699170,16cyclictest1542-21ntpq09:10:172
2855699170,16cyclictest15067-21netstat07:40:192
2855599172,1cyclictest0-21swapper/112:05:131
28555991715,1cyclictest0-21swapper/108:35:161
28555991714,2cyclictest4687-21sed09:15:181
28555991714,2cyclictest29127-21cstates07:10:151
28555991714,2cyclictest22707-21/usr/sbin/munin07:55:141
28555991714,2cyclictest22707-21/usr/sbin/munin07:55:131
28555991714,2cyclictest20432-21missed_timers07:50:181
28555991714,2cyclictest16598-21grep07:45:141
28555991714,2cyclictest16173-21tune2fs08:40:141
28555991714,2cyclictest12399-21cat11:25:141
28555991714,2cyclictest12151-21cstates12:25:141
28555991714,2cyclictest11109-21nfsd408:30:191
28555991714,2cyclictest0-21swapper/109:40:131
28555991714,2cyclictest0-21swapper/109:40:131
2855599171,15cyclictest3203-21JS22:10:211
2855599171,15cyclictest11334-21cstates07:35:141
2855599170,2cyclictest7781-21dpkg10:20:021
2855599170,2cyclictest7170-21find08:25:101
2855599170,2cyclictest31502-21ls10:05:131
2855599170,2cyclictest23446-21mailstats10:45:221
2855599170,2cyclictest20865-21cstates09:45:141
2855599170,2cyclictest17650-21apt-config12:35:001
2855599170,2cyclictest12235-21expr09:30:141
2855599170,16cyclictest7092-21ls11:15:141
2855599170,16cyclictest446-21expr09:10:131
2855599170,16cyclictest32431-21chrt08:10:561
2855599170,16cyclictest29742-21python311:00:001
2855599170,16cyclictest27557-21expr10:55:121
2855599170,16cyclictest24259-21grep09:50:171
2855599170,16cyclictest24161-21awk08:55:141
2855599170,16cyclictest22439-21ps08:50:201
2855599170,16cyclictest1930-21cat11:05:161
2855599170,16cyclictest19187-21cpuspeed_turbos10:40:121
2855599170,16cyclictest10055-21cat11:20:131
2855599170,16cyclictest0-21swapper/112:10:111
28554991714,2cyclictest9-21ksoftirqd/011:45:370
28554991714,2cyclictest4035-21H222:10:210
28554991714,2cyclictest3985-21H222:10:210
28554991714,2cyclictest3707-21master10:30:360
28554991714,2cyclictest2378-21python309:13:100
28554991714,2cyclictest22073-21nvmesmart_nvme011:40:190
28554991714,2cyclictest2056-21awk07:20:100
28554991714,2cyclictest18176-21df_inode09:40:140
28554991714,2cyclictest18176-21df_inode09:40:130
28554991714,2cyclictest17089-21ls07:45:140
28554991714,2cyclictest16392-21cpuspeed_turbos10:35:120
28554991714,2cyclictest1-21systemd07:50:170
2855499171,2cyclictest13576-21nfsd411:25:180
2855499170,2cyclictest3991-21H222:10:210
2855499170,2cyclictest3985-21H222:10:210
2855499170,2cyclictest3983-21H222:10:210
2855499170,2cyclictest31878-21sessionclean09:09:000
2855499170,2cyclictest29902-21date11:00:010
2855499170,2cyclictest29074-21sshd09:04:070
2855499170,2cyclictest21801-21latency_hist10:45:000
2855499170,2cyclictest19030-21awk12:35:170
2855499170,2cyclictest1517-21lxd11:06:420
2855499170,2cyclictest13429-21pzem_power12:25:210
2855499170,16cyclictest8233-21ntp_states11:15:190
2855499170,16cyclictest607-21ps12:00:210
2855499170,16cyclictest4035-21H222:10:210
2855499170,16cyclictest3991-21H222:10:210
2855499170,16cyclictest3991-21H222:10:210
2855499170,16cyclictest23170-21missed_timers07:55:170
2855499170,16cyclictest23170-21missed_timers07:55:160
2855499170,16cyclictest22593-21sensors08:50:200
2855499170,16cyclictest18928-21fschecks_time08:45:140
2855499170,16cyclictest1486-21snapd10:50:090
2855499170,16cyclictest11117-21chrt12:20:190
2855499170,16cyclictest0-21swapper/011:53:010
28556991614,1cyclictest0-21swapper/212:35:012
28556991614,1cyclictest0-21swapper/211:25:122
28556991614,1cyclictest0-21swapper/210:45:572
28556991614,1cyclictest0-21swapper/210:10:122
2855699160,1cyclictest79392sleep212:15:012
2855699160,1cyclictest0-21swapper/212:05:122
2855699160,15cyclictest23907-21timerwakeupswit07:55:212
2855699160,15cyclictest23907-21timerwakeupswit07:55:212
2855699160,15cyclictest23044-21apache_volume09:50:122
2855699160,15cyclictest12207-21cat12:25:142
2855699160,15cyclictest0-21swapper/211:30:122
2855699160,15cyclictest0-21swapper/211:15:142
28554991614,1cyclictest0-21swapper/010:45:130
28554991614,1cyclictest0-21swapper/010:05:180
28554991614,1cyclictest0-21swapper/009:55:150
28554991614,1cyclictest0-21swapper/009:35:150
28554991613,2cyclictest11537-21ls10:25:170
2855499160,1cyclictest4035-21H222:10:210
2855499160,1cyclictest0-21swapper/009:20:120
2855499160,15cyclictest9243-21apache_accesses09:25:090
2855499160,15cyclictest7890-21apt-config10:20:020
2855499160,15cyclictest3991-21H222:10:210
2855499160,15cyclictest30837-21cstates11:00:140
2855499160,15cyclictest28516-21dpkg10:00:110
2855499160,15cyclictest24794-21chrt08:00:070
2855499160,15cyclictest14592-21/usr/sbin/munin12:30:180
2855499160,15cyclictest0-21swapper/009:50:130
2855499160,15cyclictest0-21swapper/008:55:220
2855499160,15cyclictest0-21swapper/008:10:200
2855499160,15cyclictest0-21swapper/007:40:130
2855499160,15cyclictest0-21swapper/007:25:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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