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2026-08-24 - 00:44
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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 100 highest latencies:
System rackcslot4.osadl.org (updated Sun Aug 23, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35274132263189,59sleep00-21swapper/007:09:430
35273222263187,20sleep10-21swapper/107:08:471
353849021320,2sleep10-21swapper/107:35:061
35275879910498,4cyclictest3603741-21kworker/u8:310:14:130
36880212690,4sleep10-21swapper/111:44:081
352758999683,44cyclictest3595476-21apt-get09:35:141
352758999672,45cyclictest3653462-21apt-get10:55:131
352758999663,43cyclictest3546467-21apt-get07:55:141
352758999663,43cyclictest3532248-21apt-get07:20:151
352758999652,42cyclictest3617288-21apt-get10:05:131
352758999651,32cyclictest3631113-21apt-get10:25:071
352758999651,31cyclictest3688875-21sed11:45:041
352758999642,42cyclictest3656936-21apt-get11:00:141
352758999641,42cyclictest3674154-21apt-get11:25:061
136599640,3rtkit-daemon0-21swapper/112:11:121
136599640,3rtkit-daemon0-21swapper/112:11:111
352758999632,41cyclictest3567783-21apt-get08:45:151
352758999632,40cyclictest3548445-21apt-get08:00:121
352758999630,35cyclictest3710501-21/usr/sbin/munin12:15:201
352758999622,42cyclictest3613873-21apt-get10:00:121
352758999621,39cyclictest3695975-21apt-get11:55:101
352758999621,31cyclictest3559091-21apt-get08:25:101
352758999617,34cyclictest3564199-21sh08:35:201
352758999611,39cyclictest3670940-21apt-get11:20:121
352758999611,39cyclictest3660538-21apt-get11:05:121
352758999611,37cyclictest3605759-21apt-get09:50:071
352758999611,29cyclictest3667364-21apt-get11:15:141
352758999611,29cyclictest3624434-21apt-get10:15:121
352758999610,46cyclictest3684122-21ssh11:38:081
3527589996014,33cyclictest3680751-21sh11:33:301
352758999601,39cyclictest3540577-21apt-get07:40:121
352758999601,31cyclictest3642321-21apt-get10:40:081
352758999600,40cyclictest3565821-21apt-get08:40:111
352758999592,38cyclictest3702925-21apt-get12:05:131
352758999592,38cyclictest3646600-21apt-get10:45:131
352758999592,37cyclictest3581393-21apt-get09:15:141
352758999589,28cyclictest3542917-21expr07:45:191
3527589995814,30cyclictest3665991-21sh11:12:101
352758999581,39cyclictest3536941-21ntp_states07:30:231
352758999581,37cyclictest3554534-21apt-get08:15:061
352758999581,36cyclictest3723835-21apt-get12:35:111
352758999580,40cyclictest3627819-21apt-get10:20:111
352758999580,38cyclictest3552159-21apt-get08:10:081
352758999571,41cyclictest3591432-21ssh09:29:371
352758999571,30cyclictest3569739-21apt-get08:50:111
352758999571,27cyclictest3581133-21munin-run09:15:001
352758999570,40cyclictest3610422-21apt-get09:55:141
352758999570,38cyclictest3713349-21apt-get12:20:121
352758999570,26cyclictest3653272-21latency_hist10:55:001
352758999568,34cyclictest3623192-21ssh10:12:361
352758999561,33cyclictest3699824-21perl12:00:191
3527589995610,25cyclictest3722335-21sh12:32:051
352758999560,37cyclictest3561468-21apt-get08:30:141
352758999560,30cyclictest3693528-21awk11:50:221
352758999560,27cyclictest3529505-21unin-run07:15:001
352758999551,28cyclictest3577401-21diskmemload09:45:231
3527589995510,30cyclictest3641833-21sh10:38:511
3527589995510,24cyclictest3638603-21sh10:34:191
352758999550,36cyclictest3571704-21apt-get08:55:141
352758999550,30cyclictest3577401-21diskmemload09:30:181
352758999550,26cyclictest3559022-21latency_hist08:25:011
352758999541,29cyclictest3512164-21munin-node07:15:011
352758999540,36cyclictest3716816-21apt-get12:25:151
352758999540,32cyclictest3599693-21sed09:40:201
352758999540,29cyclictest3577401-21diskmemload09:20:191
352758999537,35cyclictest35460642chrt07:53:041
352758999531,36cyclictest3534203-21apt-get07:25:111
352758999520,39cyclictest3551755-21taskset08:05:461
352758999520,35cyclictest3575648-21apt-get09:05:131
352758999520,29cyclictest35750182sleep109:00:361
136599510,4rtkit-daemon1364-21rtkit-daemon10:33:170
136599500,4rtkit-daemon1364-21rtkit-daemon11:01:050
136599500,4rtkit-daemon1364-21rtkit-daemon09:12:220
136599490,5rtkit-daemon1364-21rtkit-daemon09:22:080
136599470,3rtkit-daemon1364-21rtkit-daemon09:42:450
136599450,4rtkit-daemon1364-21rtkit-daemon09:15:110
136599450,4rtkit-daemon1364-21rtkit-daemon08:18:460
136599440,3rtkit-daemon1364-21rtkit-daemon08:08:360
136599430,3rtkit-daemon1364-21rtkit-daemon07:46:180
136599410,2rtkit-daemon1364-21rtkit-daemon10:51:010
352758799403,8cyclictest13-21ksoftirqd/011:15:000
3527587993917,4cyclictest13-21ksoftirqd/008:55:010
3527587993820,3cyclictest13-21ksoftirqd/009:30:010
3527587993818,4cyclictest13-21ksoftirqd/012:40:010
3527587993817,3cyclictest13-21ksoftirqd/010:05:010
3527587993816,4cyclictest13-21ksoftirqd/008:45:010
3527587993815,4cyclictest13-21ksoftirqd/009:35:010
3527587993815,4cyclictest13-21ksoftirqd/007:45:010
3527587993813,4cyclictest13-21ksoftirqd/008:20:230
3527587993723,4cyclictest13-21ksoftirqd/011:10:010
3527587993719,3cyclictest13-21ksoftirqd/010:10:000
3527587993717,3cyclictest13-21ksoftirqd/007:40:000
3527587993619,4cyclictest13-21ksoftirqd/012:05:010
3527587993518,4cyclictest13-21ksoftirqd/008:35:000
3527587993516,4cyclictest13-21ksoftirqd/010:45:080
3527587993515,3cyclictest13-21ksoftirqd/011:23:550
3527587993514,4cyclictest13-21ksoftirqd/010:21:510
3527587993514,3cyclictest13-21ksoftirqd/011:45:150
136599350,3rtkit-daemon0-21swapper/112:17:230
352758799349,4cyclictest13-21ksoftirqd/007:15:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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