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2026-07-09 - 18:29
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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 rackcslot4.osadl.org (updated Thu Jul 09, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2389512293251,28sleep10-21swapper/107:09:361
2372382273231,28sleep00-21swapper/007:05:110
179699750,3rtkit-daemon0-21swapper/010:55:240
179699680,4rtkit-daemon1795-21rtkit-daemon10:16:510
23911599631,42cyclictest409157-21apt-get11:40:120
23911599622,40cyclictest417037-21apt-get11:50:140
23911599620,25cyclictest397062-21cut11:25:010
179699620,3rtkit-daemon0-21swapper/012:16:040
23911599611,36cyclictest287537-21diskmemload09:26:160
23911599610,26cyclictest389128-21latency_hist11:15:010
23911599601,30cyclictest442293-21ssh12:20:240
23911599600,45cyclictest287537-21diskmemload09:32:150
179699600,3rtkit-daemon0-21swapper/007:50:440
23911599591,40cyclictest257887-21apt-get07:55:120
23911599591,38cyclictest287531-21apt-get09:10:070
23911599581,39cyclictest397278-21apt-get11:25:130
23911599581,39cyclictest332704-21apt-get10:05:080
23911599581,36cyclictest292415-21apt-get09:15:160
23911599581,31cyclictest449000-21munin-node12:30:100
23911599580,44cyclictest287537-21diskmemload09:42:330
23911599580,41cyclictest287537-21diskmemload11:55:500
23911599580,27cyclictest251525-21grep07:40:020
23911599580,27cyclictest1-21systemd11:05:000
23911599580,25cyclictest384944-21apt-config11:10:020
23911599580,25cyclictest1-21systemd11:40:010
23911599572,35cyclictest349520-21apt-get10:25:130
23911599570,40cyclictest424934-21apt-get12:00:090
23911599570,40cyclictest424934-21apt-get12:00:090
23911599570,35cyclictest287537-21diskmemload09:23:480
23911599570,28cyclictest279746-21unin-run08:50:010
23911599570,27cyclictest312843-21cut09:40:000
23911599570,25cyclictest416856-21grep11:50:000
23911599570,24cyclictest1-21systemd10:45:000
239115995614,30cyclictest447915-21sh12:28:270
23911599561,37cyclictest259861-21apt-get08:00:140
23911599561,36cyclictest365142-21apt-get10:45:130
23911599561,36cyclictest321180-21apt-get09:50:130
23911599560,38cyclictest453085-21apt-get12:35:120
23911599560,25cyclictest255742-21latency_hist07:50:010
23911599560,25cyclictest255742-21latency_hist07:50:000
23911599560,24cyclictest241014-21latency_hist07:15:000
179699560,3rtkit-daemon0-21swapper/009:56:200
23911599551,35cyclictest245703-21apt-get07:25:110
23911599550,38cyclictest430581-21sh12:06:160
23911599550,38cyclictest317071-21apt-get09:45:140
23911599550,37cyclictest389393-21apt-get11:15:120
23911599550,30cyclictest372335-21sh10:53:550
23911599550,26cyclictest349316-21cat10:25:010
179699550,4rtkit-daemon1795-21rtkit-daemon10:11:380
179699550,3rtkit-daemon1795-21rtkit-daemon10:36:360
179699550,3rtkit-daemon0-21swapper/011:30:110
179699550,3rtkit-daemon0-21swapper/008:30:310
23911599541,35cyclictest433006-21perl12:10:150
23911599541,30cyclictest271487-21/usr/sbin/munin08:30:000
23911599540,35cyclictest251634-21apt-get07:40:130
23911599540,27cyclictest262335-21sed08:05:180
23911599539,31cyclictest850-21runrttasks08:51:430
23911599532,28cyclictest273467-21python308:35:020
23911599531,37cyclictest267785-21apt-get08:20:110
23911599531,34cyclictest353196-21apt-get10:30:110
23911599530,37cyclictest329009-21apt-get10:00:140
23911599530,35cyclictest281864-21apt-get08:55:110
23911599530,25cyclictest285593-21perf09:05:010
23911599530,25cyclictest249436-21latency_hist07:35:000
23911599520,24cyclictest242265-21cat07:15:180
3573162510,3sleep10-21swapper/110:35:151
23911599511,29cyclictest244690-21sendmail_mailqu07:20:240
23911599510,37cyclictest277071-21sed08:40:230
23911599510,26cyclictest266578-21ntpq08:15:220
179699510,3rtkit-daemon0-21swapper/008:34:481
23911599490,33cyclictest286963-21grep09:05:250
23911599490,26cyclictest264007-21grep08:10:150
239118994810,10cyclictest26-21ksoftirqd/111:20:011
179699470,3rtkit-daemon1795-21rtkit-daemon12:22:231
179699470,3rtkit-daemon1795-21rtkit-daemon10:06:561
23911899458,9cyclictest26-21ksoftirqd/111:00:001
23911899449,7cyclictest26-21ksoftirqd/111:45:001
239118994410,7cyclictest26-21ksoftirqd/111:40:011
179699440,3rtkit-daemon1795-21rtkit-daemon10:30:281
23911899437,8cyclictest26-21ksoftirqd/111:55:011
23911899436,8cyclictest26-21ksoftirqd/110:00:011
239118994311,8cyclictest26-21ksoftirqd/111:10:011
179699430,3rtkit-daemon0-21swapper/008:57:331
23911899427,8cyclictest26-21ksoftirqd/112:15:031
23911899426,8cyclictest26-21ksoftirqd/111:35:011
23911899414,8cyclictest26-21ksoftirqd/109:35:221
23911899413,9cyclictest26-21ksoftirqd/112:35:011
23911899404,8cyclictest26-21ksoftirqd/108:10:011
23911899395,9cyclictest26-21ksoftirqd/109:20:011
23911899395,8cyclictest26-21ksoftirqd/108:30:011
23911899385,9cyclictest26-21ksoftirqd/112:05:011
23911899385,9cyclictest26-21ksoftirqd/112:05:011
23911899385,9cyclictest26-21ksoftirqd/111:15:001
23911899384,8cyclictest26-21ksoftirqd/108:14:201
239118993813,9cyclictest26-21ksoftirqd/107:44:591
179699380,6rtkit-daemon424620-21ssh11:59:571
179699380,5rtkit-daemon395925-21sh11:22:581
23911899377,7cyclictest26-21ksoftirqd/108:45:021
23911899374,8cyclictest26-21ksoftirqd/108:25:001
23911899373,8cyclictest26-21ksoftirqd/107:20:011
23911899366,8cyclictest26-21ksoftirqd/110:45:251
23911899359,9cyclictest26-21ksoftirqd/109:10:031
23911899359,9cyclictest26-21ksoftirqd/107:45:051
23911899359,9cyclictest26-21ksoftirqd/107:45:041
23911899355,8cyclictest26-21ksoftirqd/110:25:221
23911899353,9cyclictest26-21ksoftirqd/108:00:111
23911899352,8cyclictest26-21ksoftirqd/108:55:011
239118993511,8cyclictest26-21ksoftirqd/109:25:011
239118993511,8cyclictest26-21ksoftirqd/109:10:001
179699350,3rtkit-daemon0-21swapper/008:17:471
23911899349,9cyclictest26-21ksoftirqd/110:05:011
23911899345,9cyclictest26-21ksoftirqd/107:35:231
23911899343,9cyclictest26-21ksoftirqd/108:35:101
23911899343,8cyclictest26-21ksoftirqd/111:00:241
23911899342,5cyclictest26-21ksoftirqd/111:45:241
179699340,3rtkit-daemon0-21swapper/012:10:451
23911899333,4cyclictest26-21ksoftirqd/109:45:011
23911899330,10cyclictest26-21ksoftirqd/110:50:011
179699330,3rtkit-daemon0-21swapper/011:29:291
23911899327,8cyclictest26-21ksoftirqd/109:25:031
23911899322,9cyclictest26-21ksoftirqd/112:35:241
23911899322,5cyclictest26-21ksoftirqd/109:30:251
23911899314,9cyclictest26-21ksoftirqd/112:05:331
23911899313,8cyclictest26-21ksoftirqd/110:20:211
23911899313,5cyclictest26-21ksoftirqd/107:20:241
23911899312,9cyclictest26-21ksoftirqd/109:00:201
23911899312,9cyclictest26-21ksoftirqd/107:25:101
23911899311,7cyclictest26-21ksoftirqd/109:45:251
23911899311,5cyclictest26-21ksoftirqd/110:44:591
23911899304,9cyclictest26-21ksoftirqd/110:14:181
179699300,3rtkit-daemon0-21swapper/009:50:071
23911899291,7cyclictest277966-21apt-get08:45:121
23911899290,9cyclictest26-21ksoftirqd/107:50:181
179699290,3rtkit-daemon0-21swapper/007:12:121
23911899282,9cyclictest26-21ksoftirqd/110:15:141
23911899281,9cyclictest26-21ksoftirqd/112:26:301
23911899280,6cyclictest247654-21apt-get07:30:131
179699280,3rtkit-daemon0-21swapper/007:58:181
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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