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2026-09-20 - 01:09
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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 376 highest latencies:
System rackcslot4.osadl.org (updated Sat Sep 19, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38169142303269,19sleep00-21swapper/007:07:190
38169872251183,52sleep10-21swapper/107:08:031
381729299166160,4cyclictest3974146-21kworker/u8:011:56:091
38421332720,4sleep03842136-21latency_hist08:10:010
38776972510,2sleep0161rcuc/009:25:020
39844322490,4sleep00-21swapper/011:55:290
39806352490,5sleep00-21swapper/011:50:410
136599470,3rtkit-daemon0-21swapper/012:34:580
136599460,3rtkit-daemon0-21swapper/009:34:020
136599450,3rtkit-daemon0-21swapper/010:01:450
136599430,6rtkit-daemon3965812-21ntp_states11:30:251
136599430,3rtkit-daemon0-21swapper/010:06:060
136599430,3rtkit-daemon0-21swapper/008:42:190
136599420,3rtkit-daemon0-21swapper/008:52:460
136599420,3rtkit-daemon0-21swapper/008:37:000
136599420,3rtkit-daemon0-21swapper/008:16:180
136599420,11rtkit-daemon3996870-21df12:15:141
136599420,10rtkit-daemon3874668-21gltestperf09:20:201
136599410,3rtkit-daemon0-21swapper/011:06:280
136599410,3rtkit-daemon0-21swapper/010:50:310
136599400,3rtkit-daemon0-21swapper/008:25:530
136599390,3rtkit-daemon0-21swapper/012:23:200
136599380,3rtkit-daemon0-21swapper/011:49:110
136599370,3rtkit-daemon0-21swapper/012:38:410
3817292993017,11cyclictest26-21ksoftirqd/109:15:001
381728999308,11cyclictest0-21swapper/010:50:000
3817289993012,12cyclictest3867003-21apt-get09:10:150
136599290,3rtkit-daemon1364-21rtkit-daemon10:26:521
39165432280,4chrt3916542-21systemctl10:20:000
3817292992811,10cyclictest3834236-21apt-get07:50:161
381728999289,8cyclictest3992472-21seq12:08:450
381729299274,5cyclictest3887674-1kworker/u9:010:15:211
381729299272,11cyclictest3910069-21apt-get10:10:141
3817292992713,9cyclictest3858657-21apt-get08:50:121
381729299270,9cyclictest3824168-21cnf-update-db07:25:021
381729299268,11cyclictest3986446-21apt-get12:00:151
3817292992618,6cyclictest3972857-21cut11:40:231
3817292992615,7cyclictest3877433-21python309:25:021
381729299261,21cyclictest3850378-21apt-get08:30:121
381729299260,8cyclictest3937550-21grep10:50:171
381728999265,12cyclictest0-21swapper/011:27:000
136599260,16rtkit-daemon3953844-21ssh11:14:320
381729299259,10cyclictest3860620-21apt-get08:55:141
381729299257,3cyclictest141rcu_preempt11:00:001
3817292992517,6cyclictest3982581-21apt-config11:55:021
381729299251,22cyclictest3828520-21grep07:35:161
3817292992511,9cyclictest3947537-21apt-get11:05:131
3817292992511,12cyclictest26-21ksoftirqd/108:10:011
381728999254,9cyclictest13-21ksoftirqd/010:56:580
381728999253,8cyclictest13-21ksoftirqd/008:12:440
3817289992511,12cyclictest3947310-21perf11:05:000
3817292992416,5cyclictest3888946-21apt-get09:40:131
381729299241,4cyclictest4010786-21python312:35:211
3817292992410,10cyclictest3830313-21apt-get07:40:131
381728999244,7cyclictest13-21ksoftirqd/007:12:120
381728999243,7cyclictest13-21ksoftirqd/010:34:190
381728999243,16cyclictest3971887-21apt-get11:40:120
381728999242,17cyclictest4003386-21apt-get12:25:140
136599240,3rtkit-daemon0-21swapper/009:45:390
136599240,3rtkit-daemon0-21swapper/009:44:480
136599240,3rtkit-daemon0-21swapper/009:05:380
381729299239,8cyclictest3981561-1kworker/u9:212:30:131
381729299237,9cyclictest3923678-21apt-get10:30:141
381729299237,10cyclictest3887674-1kworker/u9:009:50:111
381729299234,11cyclictest3817447-21apt-get07:10:141
381729299233,12cyclictest3838177-21apt-get08:00:131
381729299233,11cyclictest3899389-21apt-get09:55:161
381729299232,16cyclictest3993242-21apt-get12:10:131
381729299232,14cyclictest3916798-21apt-get10:20:141
381729299232,14cyclictest3819986-21apt-get07:15:141
381729299232,13cyclictest3870657-21apt-get09:15:141
381729299231,19cyclictest3960886-21python311:25:011
3817292992311,8cyclictest3826306-21apt-get07:30:131
381728999232,15cyclictest3821975-21apt-get07:20:140
381728999232,14cyclictest3885091-21apt-get09:35:150
136599230,3rtkit-daemon0-21swapper/012:13:190
136599230,3rtkit-daemon0-21swapper/012:02:350
40025442220,4sleep10-21swapper/112:23:241
381729299223,11cyclictest3950866-21apt-get11:10:161
381729299222,14cyclictest3968458-21apt-get11:35:161
381729299222,14cyclictest3902703-21apt-get10:00:151
381729299222,14cyclictest3832273-21apt-get07:45:151
381729299222,13cyclictest3989812-21apt-get12:05:141
3817292992217,3cyclictest3978521-21systemd-run11:50:011
3817292992215,5cyclictest26-21ksoftirqd/111:20:011
381729299221,3cyclictest3960886-21python311:25:011
381729299221,17cyclictest3856113-21python308:45:021
381729299221,14cyclictest3854311-21/usr/sbin/munin08:40:291
381729299220,4cyclictest3885421-21grep09:35:181
381728999229,8cyclictest13-21ksoftirqd/009:00:120
381728999227,9cyclictest3954291-21apt-get11:15:150
381728999224,10cyclictest3824346-21apt-get07:25:140
3817289992215,5cyclictest13-21ksoftirqd/009:19:190
3817289992213,7cyclictest3917433-21missed_timers10:20:200
136599220,3rtkit-daemon0-21swapper/010:11:060
136599220,3rtkit-daemon0-21swapper/008:01:410
39711922210,3sleep00-21swapper/011:38:560
381729299219,8cyclictest3883949-1kworker/u9:210:40:161
381729299215,10cyclictest3892387-21apt-get09:45:131
381729299214,9cyclictest3836195-21apt-get07:55:121
381729299213,11cyclictest3933928-21apt-get10:45:141
381729299213,11cyclictest3864560-21apt-get09:05:151
381729299213,10cyclictest3906106-21apt-get10:05:131
381729299212,13cyclictest3927002-21apt-get10:35:161
381729299211,15cyclictest3846457-21apt-get08:20:161
381729299210,9cyclictest3823986-21latency_hist07:25:021
381728999217,8cyclictest13-21ksoftirqd/008:45:060
381728999211,4cyclictest3866315-21diskmemload10:38:150
3817289992114,5cyclictest3829963-21sort07:39:200
136599210,3rtkit-daemon1364-21rtkit-daemon11:02:481
136599210,3rtkit-daemon0-21swapper/009:51:450
381729299202,12cyclictest3841893-21apt-get08:10:031
381729299202,10cyclictest3881552-21apt-get09:30:151
3817292992016,2cyclictest3850183-21munin-run08:30:001
3817292992011,7cyclictest4005997-21seq12:28:321
381728999209,2cyclictest3866315-21diskmemload11:34:440
381728999203,9cyclictest3957777-21apt-get11:20:150
3817289992013,5cyclictest3851946-21seq08:33:060
3817289992012,6cyclictest3933109-21seq10:43:370
3817289992012,6cyclictest3833634-21seq07:45:550
381728999200,2cyclictest141rcu_preempt07:15:180
136599200,3rtkit-daemon0-21swapper/008:59:560
381729299197,11cyclictest26-21ksoftirqd/108:15:191
381729299190,17cyclictest0-21swapper/108:40:011
381728999198,5cyclictest3837866-21seq07:59:160
381728999196,11cyclictest13-21ksoftirqd/012:15:240
381728999190,8cyclictest3901912-21ssh09:58:410
381728999189,7cyclictest3827616-21tail07:30:250
3817289991813,3cyclictest3877392-21sh09:25:000
3817289991811,5cyclictest3834718-21cat07:50:200
136599180,3rtkit-daemon0-21swapper/008:20:460
381729299170,1cyclictest0-21swapper/109:05:011
381728999179,6cyclictest3830911-21memory07:40:200
3817289991710,5cyclictest3920757-21idleruntime10:25:180
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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