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2026-06-02 - 20:38
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Tue Jun 02, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22795992515,9cyclictest21-21ksoftirqd/108:00:591
22795992424,0cyclictest0-21swapper/112:30:171
22796992213,5cyclictest0-21swapper/208:54:522
2279599220,4cyclictest0-21swapper/110:31:101
22793992222,0cyclictest0-21swapper/008:00:580
2279699210,20cyclictest870-21systemd-logind09:18:512
2279699210,20cyclictest870-21systemd-logind08:48:512
2279399210,20cyclictest843-21systemd-network10:27:440
2279699200,17cyclictest0-21swapper/210:56:422
22795992017,2cyclictest2069-21systemd-udevd08:56:521
22793992017,2cyclictest31707-21if_lxdbr010:15:170
22793992017,2cyclictest31707-21if_lxdbr010:15:170
2279699193,15cyclictest9663-21cat09:35:172
22796991917,1cyclictest28-21ksoftirqd/209:00:212
22796991917,1cyclictest28-21ksoftirqd/209:00:202
2279699190,1cyclictest0-21swapper/208:10:132
2279699190,12cyclictest917-21sed10:20:012
2279699190,12cyclictest917-21sed10:20:002
2279599193,15cyclictest0-21swapper/109:54:571
22795991917,1cyclictest0-21swapper/112:01:521
2279599190,1cyclictest0-21swapper/110:57:451
2279599190,18cyclictest12479-21timerwakeupswit10:35:221
2279399192,16cyclictest1884-21tr11:15:140
2279399190,16cyclictest0-21swapper/010:40:120
2279699183,1cyclictest28-21ksoftirqd/208:40:012
2279699182,1cyclictest28-21ksoftirqd/212:05:152
2279699182,15cyclictest28-21ksoftirqd/210:25:222
22796991814,3cyclictest20739-21cut09:00:012
22796991813,4cyclictest28-21ksoftirqd/207:30:142
22796991813,3cyclictest0-21swapper/209:07:342
2279699180,3cyclictest0-21swapper/212:35:142
2279699180,2cyclictest21916-21cpuspeed_turbos11:50:122
2279699180,17cyclictest1698-21cron07:30:012
2279699180,16cyclictest0-21swapper/211:20:002
2279599182,15cyclictest25323-21cpuspeed_turbos10:05:131
22793991816,1cyclictest0-21swapper/010:40:000
22793991815,2cyclictest26616-21tlsmgr09:46:390
22793991815,2cyclictest17084-21grep09:50:120
22793991814,2cyclictest1856-21systemd-udevd08:28:520
2279399180,3cyclictest8661-21cron12:25:000
2279399180,3cyclictest455-21plymouthd07:40:000
22796991715,1cyclictest219462chrt10:52:372
22796991715,1cyclictest11401-21apt12:29:592
22796991715,1cyclictest0-21swapper/211:40:232
22796991715,1cyclictest0-21swapper/210:00:222
22796991714,2cyclictest4646-21http_loadtime08:30:162
22796991714,2cyclictest32664-21systemctl08:25:012
22796991714,2cyclictest29447-21nvmesmart_nvme011:05:212
22796991714,2cyclictest21732-21/usr/sbin/munin08:05:202
22796991714,2cyclictest18395-21tr09:50:172
22796991714,2cyclictest16629-21/usr/sbin/munin10:45:172
22796991714,2cyclictest15133-21nfsd410:40:182
22796991714,2cyclictest13815-21expr07:50:152
22796991714,1cyclictest0-21swapper/210:31:082
2279699171,1cyclictest0-21swapper/209:55:142
2279699171,15cyclictest5672-21sed09:30:012
2279699170,2cyclictest7139-21nfsd409:30:172
2279699170,2cyclictest3450-21gsd-color07:57:122
2279699170,2cyclictest28453-21nfsd412:00:172
2279699170,2cyclictest2242-21postgres09:22:122
2279699170,16cyclictest993-21dbus-daemon08:20:012
2279699170,16cyclictest8296-21expr07:40:152
2279699170,16cyclictest8296-21expr07:40:142
2279699170,16cyclictest3450-21gsd-color12:10:192
2279699170,16cyclictest32126-21nfsd411:10:172
2279699170,16cyclictest3053-21systemd-logind11:34:512
2279699170,16cyclictest30519-21pzem_power07:20:192
2279699170,16cyclictest28483-21ls10:10:132
2279699170,16cyclictest25971-21proc_pri11:55:212
2279699170,16cyclictest25490-21chrt07:11:002
2279699170,16cyclictest25383-21expr10:05:142
2279699170,16cyclictest19058-21apache_volume11:45:122
2279699170,16cyclictest14220-21nfsd411:35:192
2279699170,16cyclictest12144-21pzem_voltage10:35:222
2279699170,16cyclictest11710-21mii-tool07:45:162
2279699170,15cyclictest3989-21H222:10:212
22795991715,1cyclictest0-21swapper/112:35:161
22795991715,1cyclictest0-21swapper/108:35:001
22795991714,2cyclictest8955-21ntpq11:25:191
22795991714,2cyclictest4521-21latency_hist11:20:011
22795991714,2cyclictest21737-21chrt09:55:581
22795991714,2cyclictest16422-21cpuspeed_turbos07:55:141
22795991714,2cyclictest14220-21nfsd411:35:171
22795991714,2cyclictest1351-21lxd10:24:421
2279599171,15cyclictest29311-21cut11:05:201
2279599171,15cyclictest265812chrt11:57:071
2279599171,15cyclictest0-21swapper/110:51:511
2279599171,15cyclictest0-21swapper/109:45:201
2279599170,2cyclictest6392-21nfsd407:35:191
2279599170,2cyclictest31533-21run-parts12:05:211
2279599170,2cyclictest27460-21awk07:15:171
2279599170,2cyclictest23814-21expr07:10:151
2279599170,2cyclictest14504-21snapd07:25:271
2279599170,2cyclictest1351-21lxd12:16:431
2279599170,2cyclictest1035-21thermald11:20:201
2279599170,16cyclictest7640-21ls10:30:011
2279599170,16cyclictest4766-21sendmail_mailst09:25:201
2279599170,16cyclictest30100-21/usr/sbin/munin08:20:161
2279599170,16cyclictest23159-21ntpq08:05:191
2279599170,16cyclictest14499-21snapd08:25:231
2279599170,16cyclictest14090-21ntp_states08:45:201
2279599170,16cyclictest12775-21latency_hist11:35:011
22793991716,1cyclictest0-21swapper/011:42:210
22793991715,1cyclictest9523-21chrt11:25:340
22793991715,1cyclictest9-21ksoftirqd/011:05:000
22793991714,2cyclictest32035-21expr07:25:140
22793991714,2cyclictest31625-21sh11:10:150
22793991713,2cyclictest23190-21fschecks_count10:55:140
2279399171,1cyclictest110852sleep009:39:470
2279399171,1cyclictest0-21swapper/008:23:360
2279399171,15cyclictest23179-21ntp_states11:50:190
2279399171,15cyclictest19969-21cpuspeed_turbos09:55:130
2279399170,2cyclictest29564-21sshd08:18:390
2279399170,2cyclictest24512-21apache_volume11:55:130
2279399170,2cyclictest2069-21systemd-udevd10:20:520
2279399170,2cyclictest16582-21missed_timers08:50:180
2279399170,2cyclictest14054-21ntp_kernel_err08:45:190
2279399170,16cyclictest8581-21expr07:40:160
2279399170,16cyclictest8581-21expr07:40:160
2279399170,16cyclictest5013-21ntp_states12:15:170
2279399170,16cyclictest4020-21sendmail_mailtr07:30:200
2279399170,16cyclictest32143-21ls09:20:000
2279399170,16cyclictest3053-21systemd-logind10:08:520
2279399170,16cyclictest29415-21grep11:05:190
2279399170,16cyclictest26760-21cut09:10:000
2279399170,16cyclictest24859-21tr08:10:120
2279399170,16cyclictest19915-21grep10:50:140
2279399170,16cyclictest19287-21cpuspeed_turbos11:45:120
2279399170,16cyclictest14844-21grep07:50:190
2279399170,16cyclictest11915-21cpuspeed_turbos12:30:160
2279399170,15cyclictest0-21swapper/008:31:270
22796991614,1cyclictest4201-21df_inode12:15:132
22796991614,1cyclictest0-21swapper/212:30:162
22796991614,1cyclictest0-21swapper/208:25:132
22796991614,1cyclictest0-21swapper/208:00:112
22796991613,2cyclictest9130-21apt-get08:40:022
22796991613,2cyclictest4843-21/usr/sbin/munin11:20:132
2279699160,1cyclictest7578-21cut12:20:172
2279699160,1cyclictest0-21swapper/209:45:152
2279699160,15cyclictest870-21systemd-logind11:26:522
2279699160,15cyclictest27777-21mailstats07:15:202
2279699160,15cyclictest12042-21ls09:40:142
2279699160,15cyclictest0-21swapper/209:10:152
2279699160,15cyclictest0-21swapper/207:35:162
22795991614,1cyclictest6376-21apt-get12:20:121
22795991614,1cyclictest0-21swapper/112:30:001
22795991614,1cyclictest0-21swapper/111:10:131
22795991614,1cyclictest0-21swapper/109:10:171
22795991614,1cyclictest0-21swapper/109:05:131
22795991614,1cyclictest0-21swapper/108:50:011
22795991614,1cyclictest0-21swapper/108:35:201
22795991614,1cyclictest0-21swapper/107:45:151
22795991614,1cyclictest0-21swapper/107:40:161
22795991614,1cyclictest0-21swapper/107:40:151
22795991613,2cyclictest993-21dbus-daemon09:00:011
22795991613,2cyclictest993-21dbus-daemon09:00:001
22795991613,2cyclictest843-21systemd-network10:04:311
22795991613,1cyclictest0-21swapper/110:48:161
2279599160,2cyclictest22351-21df11:50:141
2279599160,1cyclictest135182chrt07:50:081
2279599160,1cyclictest0-21swapper/111:00:141
2279599160,1cyclictest0-21swapper/110:10:111
2279599160,1cyclictest0-21swapper/109:35:121
2279599160,1cyclictest0-21swapper/109:20:131
2279599160,1cyclictest0-21swapper/108:10:121
2279599160,15cyclictest633-21cpuspeed_turbos12:10:121
2279599160,15cyclictest3979-21H222:10:211
2279599160,15cyclictest30355-21ntp_kernel_pll_07:20:191
2279599160,15cyclictest29704-21apache_accesses09:15:131
2279599160,15cyclictest16955-21tune2fs11:40:141
2279599160,15cyclictest15325-21ntp_states10:40:191
2279599160,15cyclictest0-21swapper/111:45:151
2279599160,15cyclictest0-21swapper/109:40:051
2279599160,15cyclictest0-21swapper/108:40:221
2279599160,15cyclictest0-21swapper/108:16:281
2279599160,15cyclictest0-21swapper/107:30:151
22793991614,1cyclictest3450-21gsd-color07:15:270
22793991614,1cyclictest100782sleep010:33:520
22793991614,1cyclictest0-21swapper/012:35:120
22793991614,1cyclictest0-21swapper/012:25:110
22793991614,1cyclictest0-21swapper/012:00:120
22793991614,1cyclictest0-21swapper/011:35:180
22793991614,1cyclictest0-21swapper/011:20:160
22793991614,1cyclictest0-21swapper/010:45:190
22793991614,1cyclictest0-21swapper/009:30:110
22793991614,1cyclictest0-21swapper/007:45:200
22793991614,1cyclictest0-21swapper/007:24:150
22793991613,2cyclictest3979-21H222:10:210
22793991613,2cyclictest29974-21apache_processe12:05:120
2279399160,1cyclictest27241-21cat09:10:150
2279399160,1cyclictest0-21swapper/012:10:130
2279399160,1cyclictest0-21swapper/009:00:180
2279399160,1cyclictest0-21swapper/009:00:180
2279399160,15cyclictest9959-21apache_processe08:40:120
2279399160,15cyclictest3989-21H222:10:210
2279399160,15cyclictest3720-21df_inode09:25:140
2279399160,15cyclictest32649-21expr09:20:120
2279399160,15cyclictest22819-21expr10:00:140
2279399160,15cyclictest0-21swapper/011:30:140
2279399160,15cyclictest0-21swapper/009:40:130
2279399160,15cyclictest0-21swapper/008:55:140
2279399160,15cyclictest0-21swapper/008:35:140
2279399160,15cyclictest0-21swapper/008:05:130
2279399160,15cyclictest0-21swapper/007:10:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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