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2026-09-14 - 02:23
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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 Sun Sep 13, 2026 12:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2965299230,20cyclictest0-21swapper/111:29:191
2965299230,20cyclictest0-21swapper/111:29:181
2965299210,3cyclictest0-21swapper/108:25:161
2965299210,18cyclictest0-21swapper/111:55:181
2964799213,11cyclictest18037-21perf11:35:000
2964799210,3cyclictest0-21swapper/009:30:010
2965799203,16cyclictest21222-21awk07:50:192
2965799200,3cyclictest3991-21H222:10:212
2965799193,15cyclictest5083-21expr10:10:242
2965799193,15cyclictest0-21swapper/212:10:142
2965799192,16cyclictest16829-21cat11:30:162
2965799190,18cyclictest4035-21H222:10:212
2965799190,17cyclictest3979-21H222:10:212
2965799190,16cyclictest4099-21H222:10:212
2965799190,16cyclictest3991-21H222:10:212
2965799190,16cyclictest3983-21H222:10:212
2965799190,16cyclictest3981-21H222:10:212
2965799190,16cyclictest3979-21H222:10:212
2965299193,15cyclictest0-21swapper/110:59:141
29652991916,2cyclictest7378-21nfsd410:15:171
2965299190,2cyclictest3981-21H222:10:211
2965299190,18cyclictest3987-21H222:10:211
2965299190,18cyclictest25035-21perf08:00:011
2965299190,18cyclictest25035-21perf08:00:001
2965299190,16cyclictest4099-21H222:10:211
2965299190,16cyclictest3981-21H222:10:211
2964799192,16cyclictest3984-21H222:10:210
2964799190,18cyclictest3985-21H222:10:210
2964799190,17cyclictest4099-21H222:10:210
2964799190,16cyclictest3991-21H222:10:210
2964799190,16cyclictest3985-21H222:10:210
2964799190,16cyclictest0-21swapper/010:13:350
2965799182,15cyclictest28-21ksoftirqd/210:49:302
29657991816,1cyclictest318082chrt10:01:042
29657991816,1cyclictest28-21ksoftirqd/211:47:112
29657991816,1cyclictest28-21ksoftirqd/209:42:312
29657991816,1cyclictest28-21ksoftirqd/209:42:302
29657991816,1cyclictest14889-21switchtime09:30:252
29657991816,1cyclictest0-21swapper/212:20:212
29657991815,2cyclictest3991-21H222:10:212
29657991814,2cyclictest3976-21H222:10:212
29657991813,4cyclictest3985-21H222:10:212
2965799181,2cyclictest3981-21H222:10:212
2965799181,16cyclictest3976-21H222:10:212
2965799180,2cyclictest4099-21H222:10:212
2965799180,2cyclictest4099-21H222:10:212
2965799180,2cyclictest3987-21H222:10:212
2965799180,2cyclictest3985-21H222:10:212
2965799180,2cyclictest3983-21H222:10:212
2965799180,17cyclictest4099-21H222:10:212
2965799180,17cyclictest3987-21H222:10:212
2965799180,17cyclictest3983-21H222:10:212
2965799180,17cyclictest26828-21sed09:55:022
2965799180,17cyclictest24912-21bounce07:58:542
2965799180,17cyclictest24912-21bounce07:58:532
2965799180,17cyclictest0-21swapper/210:40:412
2965799180,16cyclictest4099-21H222:10:212
2965799180,15cyclictest3991-21H222:10:212
2965799180,15cyclictest3981-21H222:10:212
2965299189,8cyclictest10498-21expr09:25:141
2965299182,1cyclictest21653-21basename12:35:141
29652991815,2cyclictest6734-21chrt08:23:081
29652991815,2cyclictest3979-21H222:10:211
29652991814,3cyclictest4099-21H222:10:211
29652991814,3cyclictest3987-21H222:10:211
29652991814,3cyclictest3985-21H222:10:211
29652991812,5cyclictest3989-21H222:10:211
2965299181,16cyclictest3991-21H222:10:211
2965299180,2cyclictest1286-21cat09:10:001
2965299180,17cyclictest26103-21cat09:50:251
2965299180,16cyclictest3976-21H222:10:211
2965299180,15cyclictest1562-21apt-get11:05:121
2964799182,15cyclictest20523-21expr09:40:200
2964799182,15cyclictest20523-21expr09:40:200
29647991816,1cyclictest0-21swapper/007:11:400
29647991814,3cyclictest3983-21H222:10:210
29647991814,3cyclictest3981-21H222:10:210
29647991814,3cyclictest23898-21cron09:50:010
29647991814,3cyclictest0-21swapper/008:25:150
29647991814,2cyclictest3989-21H222:10:210
29647991814,1cyclictest0-21swapper/010:25:180
2964799181,2cyclictest0-21swapper/008:55:010
2964799181,16cyclictest3989-21H222:10:210
2964799180,3cyclictest0-21swapper/008:22:170
2964799180,2cyclictest3985-21H222:10:210
2964799180,2cyclictest3983-21H222:10:210
2964799180,2cyclictest3976-21H222:10:210
2964799180,16cyclictest14754-21https12:25:010
2964799180,15cyclictest3987-21H222:10:210
2964799180,15cyclictest3981-21H222:10:210
2964799180,15cyclictest3981-21H222:10:210
29657991714,2cyclictest5711-21latency11:10:202
29657991714,2cyclictest3985-21H222:10:212
29657991714,2cyclictest3983-21H222:10:212
29657991714,2cyclictest3979-21H222:10:212
29657991714,2cyclictest29615-21nfsd409:00:182
29657991714,2cyclictest28986-21cat08:05:172
29657991714,2cyclictest26133-21fschecks_time08:00:192
29657991714,2cyclictest1261-21latency07:15:152
29657991713,3cyclictest4099-21H222:10:212
29657991713,3cyclictest3991-21H222:10:212
2965799171,15cyclictest3989-21H222:10:212
2965799171,15cyclictest0-21swapper/212:05:082
2965799170,2cyclictest3991-21H222:10:212
2965799170,2cyclictest3991-21H222:10:212
2965799170,2cyclictest3976-21H222:10:212
2965799170,2cyclictest13159-21cut11:25:132
2965799170,2cyclictest13159-21cut11:25:132
2965799170,2cyclictest11466-21expr09:25:192
2965799170,16cyclictest8912-21nvmesmart_nvme011:15:192
2965799170,16cyclictest4035-21H222:10:212
2965799170,16cyclictest4035-21H222:10:212
2965799170,16cyclictest3983-21H222:10:212
2965799170,16cyclictest3979-21H222:10:212
2965799170,16cyclictest29289-21/usr/sbin/munin10:55:152
2965799170,16cyclictest18196-21mii-tool10:35:162
2965799170,16cyclictest13629-21expr08:35:152
2965799170,16cyclictest12550-21hddtemp_smartct10:25:162
2965799170,16cyclictest10980-21http_loadtime11:20:162
2965799170,15cyclictest3981-21H222:10:212
29652991715,1cyclictest24925-21cnf-update-db08:55:011
29652991714,2cyclictest9017-21pzem_current11:15:201
29652991714,2cyclictest7708-21ntp_offset12:10:201
29652991714,2cyclictest5506-21chrt10:12:011
29652991714,2cyclictest461-21timerandwakeup08:10:241
29652991714,2cyclictest3991-21H222:10:211
29652991714,2cyclictest32660-21pzem_energy11:00:211
29652991714,2cyclictest29278-21missed_timers08:05:191
29652991714,2cyclictest2423-21sh07:17:001
29652991714,2cyclictest21800-21munin-plugin-st08:50:011
29652991714,2cyclictest19470-21df_inode09:40:141
29652991714,2cyclictest19470-21df_inode09:40:131
29652991714,2cyclictest16405-21smartctl12:25:201
29652991714,2cyclictest14501-21snapd09:20:281
29652991713,3cyclictest0-21swapper/109:00:151
2965299171,15cyclictest21-21ksoftirqd/110:06:031
2965299170,2cyclictest4099-21H222:10:211
2965299170,2cyclictest4035-21H222:10:211
2965299170,2cyclictest3991-21H222:10:211
2965299170,2cyclictest3976-21H222:10:211
2965299170,2cyclictest3976-21H222:10:211
2965299170,2cyclictest31490-21sendmail_mailst07:10:211
2965299170,2cyclictest25885-21nvmesmart_nvme011:45:181
2965299170,2cyclictest2583-21cat09:10:171
2965299170,2cyclictest11998-21expr07:35:151
2965299170,1cyclictest3979-21H222:10:211
2965299170,16cyclictest538-21expr12:00:141
2965299170,16cyclictest3985-21H222:10:211
2965299170,16cyclictest3985-21H222:10:211
2965299170,16cyclictest3981-21H222:10:211
2965299170,16cyclictest3976-21H222:10:211
2965299170,16cyclictest28312-21nfsd409:55:191
2965299170,16cyclictest20095-21cut10:40:021
2965299170,16cyclictest17387-21http12:30:031
2965299170,16cyclictest16331-21fschecks_count11:30:141
2965299170,16cyclictest16326-21expr09:35:141
2964799172,1cyclictest9-21ksoftirqd/008:45:060
29647991714,2cyclictest4099-21H222:10:210
29647991714,2cyclictest4099-21H222:10:210
29647991714,2cyclictest3981-21H222:10:210
29647991714,2cyclictest30786-21cat09:05:010
29647991714,2cyclictest26526-21if_lxdbr010:50:200
29647991714,2cyclictest15560-21latency_hist09:35:000
2964799171,15cyclictest0-21swapper/009:20:140
2964799171,15cyclictest0-21swapper/007:32:070
2964799170,2cyclictest3989-21H222:10:210
2964799170,2cyclictest3985-21H222:10:210
2964799170,2cyclictest3983-21H222:10:210
2964799170,2cyclictest3983-21H222:10:210
2964799170,2cyclictest3981-21H222:10:210
2964799170,2cyclictest3981-21H222:10:210
2964799170,2cyclictest27318-21timerwakeupswit08:00:270
2964799170,2cyclictest2277-21chrt10:06:390
2964799170,2cyclictest20690-21cat10:40:160
2964799170,2cyclictest12879-21nfsd407:35:190
2964799170,2cyclictest11081-21chrt12:15:580
2964799170,1cyclictest3985-21H222:10:210
2964799170,1cyclictest3979-21H222:10:210
2964799170,1cyclictest0-21swapper/011:41:240
2964799170,16cyclictest6863-21/usr/sbin/munin07:25:140
2964799170,16cyclictest6503-21cat10:15:120
2964799170,16cyclictest4035-21H222:10:210
2964799170,16cyclictest3979-21H222:10:210
2964799170,16cyclictest3979-21H222:10:210
2964799170,16cyclictest3243-21apache_processe07:20:140
2964799170,16cyclictest31058-21ls09:05:150
2964799170,16cyclictest29416-21nfsd408:05:190
2964799170,16cyclictest26605-21processes08:55:220
2964799170,16cyclictest13663-21timerandwakeup12:20:210
2964799170,16cyclictest1085-21gdbus07:40:210
2964799170,16cyclictest0-21swapper/008:10:200
2964799170,15cyclictest4035-21H222:10:210
29657991614,1cyclictest0-21swapper/207:20:152
2965799160,15cyclictest0-21swapper/210:30:122
29652991614,1cyclictest3985-21H222:10:211
29652991614,1cyclictest21-21ksoftirqd/111:35:091
29652991614,1cyclictest13252-21apt-get09:30:161
29652991614,1cyclictest0-21swapper/112:15:311
29652991613,1cyclictest0-21swapper/108:17:521
2965299160,15cyclictest3991-21H222:10:211
2965299160,15cyclictest3989-21H222:10:211
2965299160,15cyclictest29865-21sshd10:00:121
2965299160,15cyclictest13531-21expr08:35:151
29647991614,1cyclictest0-21swapper/009:50:170
29647991614,1cyclictest0-21swapper/007:50:180
2964799160,15cyclictest27018-21chrt09:55:020
2964799160,15cyclictest18742-21apt-config11:35:010
2964799160,15cyclictest0-21swapper/011:55:170
2964799160,15cyclictest0-21swapper/009:10:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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