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2026-04-15 - 01:14
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackeslot6.osadl.org (updated Tue Apr 14, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3861950998981,6cyclictest3907533-21latency_hist09:30:011
3861950998981,6cyclictest3907533-21latency_hist09:30:011
3861950998880,6cyclictest3879709-21latency_hist08:05:001
3861948997868,7cyclictest3929319-21kworker/u8:0+flush-179:010:50:000
3861956997664,10cyclictest3923505-21turbostat10:20:003
3861948997163,6cyclictest3904602-21/usr/sbin/munin09:20:240
3861950996859,7cyclictest266-21systemd-journal08:00:011
4577091670,14ptp4l431rcuc/307:10:003
3861948996759,6cyclictest3955573-21latency_hist12:00:010
3861950996659,5cyclictest3957170-21latency_hist12:05:001
3861948996554,9cyclictest266-21systemd-journal09:35:000
3861950996456,6cyclictest3958755-21latency_hist12:10:011
3861950996454,7cyclictest3896367-21/usr/sbin/munin08:55:251
3861950996352,9cyclictest3915739-21apt-get09:55:121
3861950996256,4cyclictest3936279-21kworker/u8:3+flush-179:011:40:261
3861948996256,5cyclictest3922726-21kworker/u8:1+flush-179:011:00:160
3861953996158,2cyclictest0-21swapper/207:57:582
3861950996153,6cyclictest3965122-21latency_hist12:30:011
3861950996153,6cyclictest3865027-21latency_hist07:20:021
3861948996052,6cyclictest3929319-21kworker/u8:0+flush-179:010:55:260
3861950995848,8cyclictest3925351-21apt-get10:25:111
3861948995851,5cyclictest3863659-21kworker/u8:0+flush-179:008:20:010
3861948995849,7cyclictest3946031-21latency_hist11:30:010
3861948995751,4cyclictest3934627-21latency_hist10:55:010
3861950995649,5cyclictest3871750-21latency_hist07:40:011
3861950995646,8cyclictest510-21rs:main1
3861950995639,16cyclictest0-21swapper/108:12:591
3861950995635,19cyclictest3963536-21latency_hist12:25:001
386195099561,6cyclictest3904380-21awk09:20:001
386195099560,2cyclictest0-21swapper/111:25:151
3861948995647,7cyclictest3878108-21latency_hist08:00:010
3861950995449,4cyclictest3941788-21kworker/u8:1+flush-179:011:20:281
3861950995446,6cyclictest3909377-21apt-get09:35:131
3861950995446,6cyclictest3892699-21latency_hist08:45:001
3861948995448,5cyclictest3908590-21kworker/u8:2+flush-179:009:50:220
3861948995445,7cyclictest3901425-21apt-get09:10:110
3861950995240,10cyclictest3900913-21apt-get09:10:001
3861948995246,5cyclictest3881524-21kworker/u8:3+flush-179:008:24:550
3861948995245,5cyclictest3894264-21kworker/u8:2+flush-179:008:55:000
3861948995244,6cyclictest266-21systemd-journal10:10:010
3861950995144,6cyclictest3941145-21store11:15:011
3861950995144,5cyclictest3866617-21latency_hist07:25:021
3861948995143,6cyclictest3865271-21/usr/sbin/munin07:20:170
3861948995134,14cyclictest714-21Xorg08:12:580
3861948995042,6cyclictest3894295-21apt-get08:50:000
3861950994941,7cyclictest266-21systemd-journal11:53:091
3861950994941,7cyclictest266-21systemd-journal11:53:081
386195099490,45cyclictest0-21swapper/108:50:131
3861948994939,8cyclictest3906205-21apt-get09:25:120
3861948994939,8cyclictest3906205-21apt-get09:25:120
3861950994832,14cyclictest266-21systemd-journal07:54:251
3861950994826,20cyclictest3949205-21latency_hist11:40:011
3861956994745,1cyclictest0-21swapper/307:33:583
3861950994739,6cyclictest3874930-21latency_hist07:50:011
3861950994728,17cyclictest3954893-21missed_timers11:55:191
386195099470,42cyclictest3889517-21cron08:35:001
3861948994726,19cyclictest0-21swapper/011:45:140
386194899470,1cyclictest0-21swapper/012:35:160
3861950994630,14cyclictest3901404-21kworker/u8:2+flush-179:009:10:261
386195099460,44cyclictest714-21Xorg10:20:591
386195099460,2cyclictest0-21swapper/110:55:141
3861950994527,15cyclictest3966968-21apt-get12:35:151
3861948994538,6cyclictest3891149-21kworker/u8:1+flush-179:009:45:000
3861948994523,17cyclictest0-21swapper/012:05:140
231999450,4rtkit-daemon2318-21rtkit-daemon10:54:291
3861956994436,7cyclictest0-21swapper/308:21:593
3861950994440,3cyclictest3868270-21systemd-run07:30:001
3861950994439,3cyclictest484-21dbus-daemon11:20:001
3861948994436,6cyclictest3957203-21kworker/u8:2+flush-179:012:10:210
3861950994336,5cyclictest3952394-21latency_hist11:50:021
3861950994334,7cyclictest3881524-21kworker/u8:3+flush-179:008:35:241
3861950994334,7cyclictest3881524-21kworker/u8:3+flush-179:008:35:231
3861950994325,17cyclictest3891149-21kworker/u8:1+events_unbound09:05:001
386195099431,33cyclictest3915499-21awk09:55:001
386195099430,1cyclictest0-21swapper/109:45:001
3861948994337,4cyclictest3861944-21cyclictest11:35:580
3861948994336,5cyclictest3900271-21needreboot09:05:200
3861948994334,7cyclictest3868217-21apt-get07:30:000
3861948994327,14cyclictest0-21swapper/010:20:590
386194899431,39cyclictest3961941-21idleruntime-cro12:20:010
3861950994237,4cyclictest3905979-21kworker/u8:0+flush-179:009:25:001
386195099420,5cyclictest266-21systemd-journal12:20:001
3861948994232,8cyclictest266-21systemd-journal09:00:000
386194899421,38cyclictest714-21Xorg08:36:590
386194899421,38cyclictest714-21Xorg08:36:590
386194899420,40cyclictest3889520-21sh08:35:010
3861950994122,18cyclictest714-21Xorg11:05:001
3861950994121,19cyclictest0-21swapper/110:45:131
3861948994135,4cyclictest3887921-21latency_hist08:30:010
3861948994126,13cyclictest0-21swapper/008:40:140
3861953994037,2cyclictest0-21swapper/209:12:592
386195399400,1cyclictest0-21swapper/211:14:542
3861950994033,5cyclictest266-21systemd-journal07:33:051
3861950994023,16cyclictest0-21swapper/110:30:271
3861948994036,3cyclictest714-21Xorg12:27:590
3861948994036,3cyclictest3936279-21kworker/u8:3+events_unbound12:00:240
3861948994036,3cyclictest3928301-21systemd-run10:35:000
3861948994035,3cyclictest3874939-21cron07:50:000
3861948994031,7cyclictest3876514-21latency_hist07:55:000
3861948994018,19cyclictest0-21swapper/010:40:150
386194899400,39cyclictest3870056-21turbostat07:39:540
3861956993937,1cyclictest0-21swapper/307:57:593
3861950993935,2cyclictest714-21Xorg10:40:591
3861950993935,2cyclictest714-21Xorg07:41:591
3861950993932,6cyclictest3892938-21/usr/sbin/munin08:45:161
3861950993931,5cyclictest3965382-21apt-get12:30:131
3861948993934,4cyclictest484-21dbus-daemon08:10:000
3861948993934,4cyclictest3919985-21kworker/u8:0+flush-179:010:15:010
3861948993934,4cyclictest3919985-21kworker/u8:0+flush-179:010:15:010
3861948993930,8cyclictest3962191-21/usr/sbin/munin12:20:170
386194899390,37cyclictest0-21swapper/011:11:590
3861956993831,5cyclictest3929862-21turbostat10:40:013
386195399380,36cyclictest0-21swapper/211:35:592
3861950993821,16cyclictest0-21swapper/107:15:001
386195099382,10cyclictest714-21Xorg08:15:581
3861950993819,17cyclictest0-21swapper/110:15:241
3861950993818,19cyclictest0-21swapper/108:21:591
3861950993815,3cyclictest0-21swapper/111:10:011
3861948993821,16cyclictest0-21swapper/007:35:000
386194899380,36cyclictest0-21swapper/008:04:000
386195699370,36cyclictest0-21swapper/309:41:593
3861953993734,2cyclictest0-21swapper/209:09:002
3861950993725,11cyclictest3908590-21kworker/u8:2+events_unbound10:05:011
386194899378,12cyclictest3912952-21fschecks_time09:45:180
3861948993734,2cyclictest714-21Xorg11:07:580
3861948993733,3cyclictest714-21Xorg10:02:590
3861948993714,22cyclictest3952744-21grep11:50:140
3861948993714,22cyclictest3952744-21grep11:50:130
3861956993634,1cyclictest0-21swapper/310:41:593
3861956993633,2cyclictest0-21swapper/309:13:593
386195699360,35cyclictest0-21swapper/307:24:563
386195699360,1cyclictest0-21swapper/308:48:003
3861953993633,2cyclictest0-21swapper/212:18:582
3861953993633,2cyclictest0-21swapper/211:33:002
3861953993633,2cyclictest0-21swapper/211:22:592
3861953993633,2cyclictest0-21swapper/209:34:562
3861953993633,2cyclictest0-21swapper/207:38:592
3861950993632,3cyclictest3920292-21systemd-run10:10:011
3861950993618,15cyclictest0-21swapper/110:10:211
3861950993618,15cyclictest0-21swapper/110:10:211
3861948993615,20cyclictest3903105-21cat09:15:140
386194899361,33cyclictest3949483-21apt11:40:160
3861956993533,1cyclictest0-21swapper/308:44:553
3861956993533,1cyclictest0-21swapper/308:32:003
3861956993532,2cyclictest0-21swapper/310:20:593
386195699350,1cyclictest0-21swapper/312:04:553
3861953993532,2cyclictest0-21swapper/209:22:592
3861950993531,3cyclictest3913652-21timerandwakeup09:45:251
3861950993510,6cyclictest3959146-21grep12:10:131
386195099350,18cyclictest3887921-21latency_hist08:30:021
3861948993527,7cyclictest3966710-21munin-run12:35:000
386194899352,6cyclictest714-21Xorg09:55:590
3861956993431,2cyclictest0-21swapper/308:08:593
3861953993431,2cyclictest0-21swapper/210:53:592
3861953993431,2cyclictest0-21swapper/210:32:592
3861953993431,2cyclictest0-21swapper/208:39:562
3861953993431,2cyclictest0-21swapper/208:39:552
3861950993429,4cyclictest3947282-21switchtime11:30:221
3861950993427,5cyclictest0-21swapper/109:31:591
386194899343,8cyclictest714-21Xorg07:12:000
3861948993431,2cyclictest0-21swapper/007:42:000
3861948993411,3cyclictest3923568-21latency_hist10:20:000
3861956993328,3cyclictest3918697-21sleep10:05:003
3861953993331,1cyclictest0-21swapper/209:49:592
3861953993330,2cyclictest0-21swapper/212:07:592
3861953993330,2cyclictest0-21swapper/211:53:592
3861953993330,2cyclictest0-21swapper/211:53:592
3861953993330,2cyclictest0-21swapper/210:45:592
3861953993330,2cyclictest0-21swapper/210:02:592
3861953993330,2cyclictest0-21swapper/207:14:552
386195099333,9cyclictest714-21Xorg08:06:001
386194899332,5cyclictest714-21Xorg09:37:590
386194899331,29cyclictest0-21swapper/011:30:130
3861948993312,4cyclictest3898070-21cat09:00:140
386194899330,29cyclictest0-21swapper/011:15:030
4577091320,6ptp4l441ktimers/311:54:563
4577091320,6ptp4l441ktimers/311:54:553
3861956993229,2cyclictest0-21swapper/310:48:593
3861953993230,1cyclictest0-21swapper/208:10:002
3861953993229,2cyclictest0-21swapper/210:43:592
3861953993229,2cyclictest0-21swapper/210:13:592
3861953993229,2cyclictest0-21swapper/210:13:592
386194899323,7cyclictest714-21Xorg11:21:580
386194899322,6cyclictest714-21Xorg07:17:580
3861948993211,4cyclictest3925583-21cat10:25:150
4577091310,7ptp4l441ktimers/312:15:013
3861956993128,2cyclictest0-21swapper/310:27:593
3861956993128,2cyclictest0-21swapper/307:54:553
3861953993129,1cyclictest0-21swapper/212:14:592
3861953993129,1cyclictest0-21swapper/208:25:002
3861953993128,2cyclictest0-21swapper/210:37:592
386194899311,6cyclictest0-21swapper/010:37:590
4577091300,7ptp4l61490irq/134-eno1-TxRx-009:05:013
3861956993027,2cyclictest0-21swapper/311:15:593
3861956993027,2cyclictest0-21swapper/308:00:143
3861953993027,2cyclictest0-21swapper/212:38:592
3861953993027,2cyclictest0-21swapper/211:20:002
3861953993027,2cyclictest0-21swapper/210:20:122
3861953993027,2cyclictest0-21swapper/209:26:592
3861953993027,2cyclictest0-21swapper/209:26:592
3861953993027,2cyclictest0-21swapper/208:58:592
3861953993027,2cyclictest0-21swapper/208:16:592
3861953993027,2cyclictest0-21swapper/207:30:032
386195399300,2cyclictest0-21swapper/211:55:122
3861950993023,5cyclictest3861811-21latency_hist07:10:021
4577091290,7ptp4l441ktimers/311:59:573
4577091290,6ptp4l441ktimers/312:39:563
4577091290,6ptp4l441ktimers/312:10:003
4577091290,6ptp4l441ktimers/309:55:003
4577091290,6ptp4l441ktimers/309:20:013
3861956992927,1cyclictest0-21swapper/309:48:593
3861956992927,1cyclictest0-21swapper/307:36:593
3861956992926,2cyclictest0-21swapper/311:38:583
3861956992926,2cyclictest0-21swapper/311:00:133
3861953992927,1cyclictest0-21swapper/209:19:592
3861953992926,2cyclictest0-21swapper/210:25:142
3861953992926,2cyclictest0-21swapper/210:15:132
3861953992926,2cyclictest0-21swapper/208:50:022
3861953992926,2cyclictest0-21swapper/208:30:142
3861953992926,2cyclictest0-21swapper/208:28:582
386195399290,27cyclictest0-21swapper/209:50:132
386195399290,27cyclictest0-21swapper/207:40:132
4577091280,6ptp4l61490irq/134-eno1-TxRx-007:15:013
4577091280,6ptp4l441ktimers/311:50:013
4577091280,6ptp4l441ktimers/309:25:013
4577091280,6ptp4l441ktimers/308:20:013
4577091280,6ptp4l441ktimers/307:50:003
3861956992826,1cyclictest0-21swapper/310:13:593
3861956992826,1cyclictest0-21swapper/310:13:593
3861956992826,1cyclictest0-21swapper/308:50:023
3861956992825,2cyclictest0-21swapper/309:05:133
386195699280,2cyclictest0-21swapper/311:25:153
386195699280,27cyclictest0-21swapper/311:30:123
386195699280,27cyclictest0-21swapper/311:10:143
386195699280,26cyclictest0-21swapper/311:40:163
386195699280,26cyclictest0-21swapper/309:55:133
386195699280,26cyclictest0-21swapper/308:35:143
386195699280,26cyclictest0-21swapper/308:35:143
3861953992826,1cyclictest0-21swapper/210:05:132
386195399280,2cyclictest0-21swapper/212:25:142
386195399280,26cyclictest0-21swapper/211:08:592
386195399280,26cyclictest0-21swapper/209:02:592
386195399280,26cyclictest0-21swapper/207:20:132
386195399280,26cyclictest0-21swapper/207:15:112
386195399280,25cyclictest0-21swapper/210:58:592
45782912724,1phc2sys0-21swapper/311:05:113
4577091270,7ptp4l61490irq/134-eno1-TxRx-010:10:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-009:35:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-009:30:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-009:30:003
4577091270,6ptp4l441ktimers/312:30:003
4577091270,5ptp4l441ktimers/312:24:553
3861956992725,1cyclictest0-21swapper/310:30:593
3861956992725,1cyclictest0-21swapper/308:27:583
3861956992724,2cyclictest0-21swapper/312:17:003
3861956992724,2cyclictest0-21swapper/308:13:583
386195699270,1cyclictest0-21swapper/307:25:143
3861953992724,2cyclictest0-21swapper/208:46:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-010:55:003
4577091260,5ptp4l61490irq/134-eno1-TxRx-008:59:553
4577091260,5ptp4l441ktimers/309:39:553
4577091260,5ptp4l441ktimers/307:19:553
3861953992623,2cyclictest0-21swapper/212:03:002
386195399260,2cyclictest0-21swapper/207:27:002
386195399260,24cyclictest0-21swapper/207:50:132
4577091250,4ptp4l441ktimers/307:44:563
4577091250,3ptp4l61490irq/134-eno1-TxRx-011:25:003
3861953992522,2cyclictest0-21swapper/211:49:582
4577091240,5ptp4l61490irq/134-eno1-TxRx-012:35:013
3861953992422,1cyclictest0-21swapper/212:24:592
3861953992321,1cyclictest0-21swapper/211:44:592
3861953992219,2cyclictest0-21swapper/209:35:162
3861953992118,2cyclictest0-21swapper/208:42:582
386194899194,12cyclictest3861958-21wc07:10:020
3861953991815,2cyclictest0-21swapper/212:30:592
4577091170,3ptp4l441ktimers/310:55:153
3861953991614,1cyclictest0-21swapper/211:29:582
3861953991411,2cyclictest0-21swapper/207:47:592
3861953991311,1cyclictest0-21swapper/208:15:002
3861953991311,1cyclictest0-21swapper/208:00:592
3861953991310,2cyclictest0-21swapper/211:01:592
38619539996,2cyclictest0-21swapper/209:44:052
38619539963,2cyclictest0-21swapper/209:55:192
38619539930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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