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2026-09-07 - 20:09
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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 Mon Sep 07, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1599899360,33cyclictest0-21swapper/109:40:191
1599399273,5cyclictest0-21swapper/011:34:590
15998992615,0cyclictest0-21swapper/108:41:041
15998992615,0cyclictest0-21swapper/108:41:041
1599399241,18cyclictest6035-21cat07:50:010
1599399230,8cyclictest0-21swapper/010:54:220
1599399230,8cyclictest0-21swapper/010:54:210
1599399230,5cyclictest0-21swapper/008:10:430
15993992213,0cyclictest0-21swapper/007:40:160
1599399220,21cyclictest843-21systemd-network10:03:540
1600399214,6cyclictest0-21swapper/211:04:222
1599399210,19cyclictest31898-21python312:25:000
16003992018,1cyclictest28-21ksoftirqd/212:20:242
1600399200,19cyclictest843-21systemd-network11:36:552
15998992013,6cyclictest8467-21php7.012:38:591
1599899200,19cyclictest426-21systemd-udevd11:24:511
15993992016,3cyclictest0-21swapper/007:23:020
15993992014,5cyclictest0-21swapper/007:50:180
1599399201,18cyclictest4030-21groups22:10:210
1599399201,18cyclictest4030-21groups22:10:210
1599399201,12cyclictest0-21swapper/012:14:300
1599899192,16cyclictest0-21swapper/111:38:531
15998991915,3cyclictest0-21swapper/109:25:141
1599899190,5cyclictest0-21swapper/111:33:171
1599899190,18cyclictest870-21systemd-logind10:26:511
1599899190,18cyclictest426-21systemd-udevd08:18:521
1599399190,16cyclictest0-21swapper/009:48:480
16003991815,2cyclictest21638-21chrt11:06:462
16003991814,2cyclictest9473-21python309:50:012
16003991813,4cyclictest25209-21uname12:10:172
1600399181,1cyclictest0-21swapper/208:20:002
1600399180,3cyclictest455-21plymouthd07:40:012
1600399180,2cyclictest3989-21H222:10:212
1600399180,17cyclictest5700-21perf12:34:592
1600399180,17cyclictest3985-21H222:10:212
1600399180,16cyclictest3983-21H222:10:212
1600399180,16cyclictest3983-21H222:10:212
1599899182,15cyclictest26620-21chrt07:27:481
1599899182,15cyclictest21-21ksoftirqd/109:35:531
15998991815,2cyclictest19291-21latency_hist11:05:001
15998991814,3cyclictest0-21swapper/108:45:181
15998991814,3cyclictest0-21swapper/108:10:041
15998991813,2cyclictest3985-21H222:10:211
1599899180,16cyclictest3981-21H222:10:211
1599399183,1cyclictest0-21swapper/008:35:180
15993991815,2cyclictest12890-21fschecks_time08:00:140
1599399181,2cyclictest2637-21chrt12:29:570
1599399181,16cyclictest8768-21nfsd411:40:190
1599399181,16cyclictest19638-21fschecks_count07:15:150
1599399180,3cyclictest30350-21python311:25:010
1599399180,3cyclictest15570-21timerandwakeup09:00:210
1600399172,1cyclictest0-21swapper/211:10:592
16003991715,1cyclictest0-21swapper/211:15:202
16003991715,1cyclictest0-21swapper/207:45:142
16003991714,2cyclictest3989-21H222:10:212
16003991714,2cyclictest3985-21H222:10:212
16003991714,2cyclictest3985-21H222:10:212
16003991714,2cyclictest32629-21/usr/sbin/munin12:25:192
16003991714,2cyclictest29159-21/usr/sbin/munin08:30:162
16003991714,2cyclictest21415-21expr12:05:152
16003991714,2cyclictest20753-21ls07:15:232
16003991714,2cyclictest2069-21systemd-udevd11:48:522
16003991714,2cyclictest19683-21nfsd410:05:172
16003991714,2cyclictest15945-21lxd07:56:432
16003991714,2cyclictest14620-21ls10:55:122
16003991714,2cyclictest14131-21expr09:00:142
1600399171,1cyclictest0-21swapper/207:25:172
1600399170,2cyclictest7094-21latency12:35:172
1600399170,2cyclictest3983-21H222:10:212
1600399170,2cyclictest27115-21expr12:15:132
1600399170,2cyclictest26802-21pzem_current09:20:222
1600399170,2cyclictest16161-21nfsd408:05:182
1600399170,2cyclictest13676-21latency_hist09:00:002
1600399170,16cyclictest6490-21chrt09:42:292
1600399170,16cyclictest5080-21chrt08:44:142
1600399170,16cyclictest5080-21chrt08:44:132
1600399170,16cyclictest3987-21H222:10:212
1600399170,16cyclictest3983-21H222:10:212
1600399170,16cyclictest28251-21cpuspeed_turbos09:25:132
1600399170,16cyclictest27771-21expr07:30:152
1600399170,16cyclictest24525-21nfsd408:20:182
1600399170,16cyclictest17872-21chrt10:02:542
1600399170,16cyclictest1445-21kernelversion07:40:162
1600399170,16cyclictest13590-21ntp_offset08:00:162
1600399170,16cyclictest12649-21/usr/sbin/munin09:55:002
1600399170,16cyclictest1035-21thermald10:10:222
1600399170,16cyclictest0-21swapper/209:36:342
15998991715,1cyclictest0-21swapper/107:48:401
15998991714,2cyclictest9276-21latency08:50:201
15998991714,2cyclictest7724-21smartctl07:50:191
15998991714,2cyclictest5601-21lxd10:42:441
15998991714,2cyclictest31505-21munin-run08:35:011
15998991714,2cyclictest24385-21sed11:10:231
15998991714,2cyclictest2364-21chrt12:26:231
15998991714,2cyclictest19031-21fschecks_count12:00:141
15998991714,2cyclictest1856-21systemd-udevd07:24:521
15998991712,4cyclictest15427-21nfsd410:55:161
1599899171,15cyclictest0-21swapper/112:17:461
1599899170,2cyclictest993-21dbus-daemon09:20:221
1599899170,2cyclictest993-21dbus-daemon07:55:211
1599899170,2cyclictest9532-21taskset11:42:091
1599899170,2cyclictest31018-21gpg-connect-age11:25:011
1599899170,2cyclictest16879-21gpgv09:05:021
1599899170,16cyclictest4099-21H222:10:211
1599899170,16cyclictest4099-21H222:10:211
1599899170,16cyclictest3989-21H222:10:211
1599899170,16cyclictest3981-21H222:10:211
1599899170,16cyclictest3979-21H222:10:211
1599899170,16cyclictest3295-21cpuspeed_turbos12:30:131
1599899170,16cyclictest30228-21expr07:35:141
1599899170,16cyclictest28625-21chrt08:29:071
1599899170,16cyclictest26008-21vmstat10:15:221
1599899170,16cyclictest21151-21apache_volume12:05:131
1599899170,16cyclictest20961-21ntp_kernel_pll_11:05:181
1599899170,16cyclictest15723-21apache_accesses10:00:131
1599899170,16cyclictest10355-21cpuspeed_turbos09:50:141
15993991714,2cyclictest6233-21expr10:40:150
15993991714,2cyclictest3987-21H222:10:210
15993991714,2cyclictest24773-21chrt09:19:200
15993991714,2cyclictest21685-21timerwakeupswit09:10:210
15993991714,2cyclictest19190-21http_loadtime10:05:160
15993991714,2cyclictest18578-21sed11:00:210
1599399171,1cyclictest0-21swapper/008:28:400
1599399170,2cyclictest3989-21H222:10:210
1599399170,2cyclictest31892-21ls10:30:010
1599399170,2cyclictest31805-21sed09:30:180
1599399170,2cyclictest29342-21munin-plugin-st12:20:010
1599399170,2cyclictest22252-21kernelversion10:10:170
1599399170,2cyclictest14688-21df10:55:130
1599399170,2cyclictest1-21systemd12:38:590
1599399170,2cyclictest10361-21/usr/sbin/munin07:55:170
1599399170,1cyclictest0-21swapper/011:10:140
1599399170,1cyclictest0-21swapper/009:43:070
1599399170,16cyclictest6902-21nfsd408:45:170
1599399170,16cyclictest4099-21H222:10:210
1599399170,16cyclictest4099-21H222:10:210
1599399170,16cyclictest3118-21cat10:35:140
1599399170,16cyclictest3058-21rs:main0
1599399170,16cyclictest28282-21missed_timers07:30:170
1599399170,16cyclictest27922-21wc10:20:180
1599399170,16cyclictest24567-21grep07:25:140
1599399170,16cyclictest19746-21grep11:05:150
1599399170,16cyclictest14868-21vmstat11:50:210
1599399170,16cyclictest14495-21snapd12:30:280
1599399170,16cyclictest1316-21cpuspeed_turbos09:35:140
16003991614,1cyclictest27116-21smartctl08:25:162
16003991614,1cyclictest0-21swapper/212:00:022
16003991614,1cyclictest0-21swapper/210:20:012
16003991614,1cyclictest0-21swapper/209:55:102
16003991614,1cyclictest0-21swapper/209:30:172
16003991614,1cyclictest0-21swapper/208:50:132
16003991613,2cyclictest16844-21netstat11:55:172
1600399160,15cyclictest8661-21cpu10:45:142
1600399160,15cyclictest345-21expr10:30:142
1600399160,15cyclictest32551-21fschecks_count08:35:142
1600399160,15cyclictest30229-21fschecks_time10:25:152
1600399160,15cyclictest22827-21expr09:15:132
1600399160,15cyclictest21750-21/usr/sbin/munin07:20:212
1600399160,15cyclictest0-21swapper/211:25:012
15998991614,1cyclictest24739-21smartctl12:10:151
15998991614,1cyclictest13926-21grep08:00:201
15998991614,1cyclictest0-21swapper/111:50:111
15998991614,1cyclictest0-21swapper/110:50:191
15998991614,1cyclictest0-21swapper/110:50:191
15998991614,1cyclictest0-21swapper/110:45:131
15998991614,1cyclictest0-21swapper/110:35:021
15998991614,1cyclictest0-21swapper/110:05:131
15998991614,1cyclictest0-21swapper/108:55:201
15998991613,2cyclictest17308-21sed07:10:171
1599899160,1cyclictest750-21irqstats10:30:171
1599899160,1cyclictest0-21swapper/107:44:101
1599899160,15cyclictest4099-21H222:10:211
1599899160,15cyclictest20076-21cat09:10:131
1599899160,15cyclictest0-21swapper/111:45:191
1599899160,15cyclictest0-21swapper/109:45:171
1599899160,15cyclictest0-21swapper/108:35:161
1599899160,15cyclictest0-21swapper/107:15:141
15993991614,1cyclictest0-21swapper/012:05:120
15993991614,1cyclictest0-21swapper/011:50:000
15993991614,1cyclictest0-21swapper/009:25:210
15993991614,1cyclictest0-21swapper/009:20:150
15993991614,1cyclictest0-21swapper/007:35:140
15993991613,2cyclictest8717-21grep10:45:140
15993991613,2cyclictest24048-21cat10:15:100
1599399160,2cyclictest15461-21cat08:05:140
1599399160,1cyclictest0-21swapper/011:25:130
1599399160,1cyclictest0-21swapper/009:55:150
1599399160,1cyclictest0-21swapper/008:55:210
1599399160,15cyclictest9538-21nfsd408:50:210
1599399160,15cyclictest16968-21fschecks_time07:10:160
1599399160,15cyclictest122392chrt09:51:080
1599399160,15cyclictest0-21swapper/012:00:110
1599399160,15cyclictest0-21swapper/011:35:130
1599399160,15cyclictest0-21swapper/009:05:150
16003991513,1cyclictest0-21swapper/210:20:162
1600399150,1cyclictest8158-21perl11:40:152
1600399150,1cyclictest0-21swapper/210:40:172
1599899150,1cyclictest14377-21smartctl09:55:181
1599899150,1cyclictest0-21swapper/109:15:131
1599899150,14cyclictest0-21swapper/107:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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