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2026-05-20 - 16:24
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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 Wed May 20, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36002532314272,27sleep00-21swapper/007:06:010
36002132252193,45sleep10-21swapper/107:05:351
179699570,4rtkit-daemon1795-21rtkit-daemon08:23:521
179699550,4rtkit-daemon1795-21rtkit-daemon11:33:001
179699540,3rtkit-daemon1795-21rtkit-daemon07:58:371
179699520,4rtkit-daemon1795-21rtkit-daemon11:55:430
179699520,3rtkit-daemon1795-21rtkit-daemon11:17:010
36910032510,3sleep10-21swapper/110:03:031
179699510,4rtkit-daemon1795-21rtkit-daemon11:47:250
37532912500,4sleep10-21swapper/111:25:391
37157582500,4sleep10-21swapper/110:35:501
179699500,4rtkit-daemon1795-21rtkit-daemon08:59:130
179699500,3rtkit-daemon1795-21rtkit-daemon08:46:390
179699490,3rtkit-daemon1795-21rtkit-daemon12:19:420
179699490,3rtkit-daemon1795-21rtkit-daemon08:34:030
179699490,3rtkit-daemon1795-21rtkit-daemon07:51:021
179699480,4rtkit-daemon1795-21rtkit-daemon11:43:070
179699480,4rtkit-daemon1795-21rtkit-daemon10:49:460
179699470,3rtkit-daemon1795-21rtkit-daemon09:23:290
36569332460,5sleep10-21swapper/109:17:521
179699450,3rtkit-daemon1795-21rtkit-daemon11:30:210
179699440,4rtkit-daemon1795-21rtkit-daemon07:18:200
179699440,3rtkit-daemon1795-21rtkit-daemon07:27:510
179699420,4rtkit-daemon1795-21rtkit-daemon08:19:200
179699390,5rtkit-daemon1795-21rtkit-daemon09:15:100
360071799373,8cyclictest3739935-21sh11:10:000
360071799371,10cyclictest3782921-21taskset12:05:000
179699370,5rtkit-daemon3765173-21taskset11:41:191
179699370,3rtkit-daemon0-21swapper/111:50:460
37172962360,1sleep00-21swapper/010:39:250
360071799364,6cyclictest3678416-21switchtime09:45:240
360071799360,13cyclictest3646285-21grep09:00:180
360071799360,10cyclictest3752900-21rm11:25:230
179699360,3rtkit-daemon1795-21rtkit-daemon10:46:481
179699360,3rtkit-daemon0-21swapper/111:13:191
179699360,3rtkit-daemon0-21swapper/111:11:380
179699360,3rtkit-daemon0-21swapper/012:20:010
360071799354,9cyclictest3617931-21cut07:50:170
360071799354,8cyclictest3806199-21grep12:35:160
360071799354,10cyclictest3787684-21ntpq12:10:200
360071799352,10cyclictest3630610-21sh08:20:200
179699350,5rtkit-daemon1795-21rtkit-daemon10:53:380
179699350,3rtkit-daemon1795-21rtkit-daemon11:24:590
179699350,3rtkit-daemon0-21swapper/110:12:591
179699350,3rtkit-daemon0-21swapper/108:11:030
360071799346,10cyclictest3638883-21unixbench_multi08:40:240
360071799343,8cyclictest3665987-21fschecks_count09:30:170
360071799342,8cyclictest3620677-21switchtime07:55:240
360071799341,7cyclictest3703303-21apt-get10:20:120
360071799341,15cyclictest3805206-21python312:35:010
360071799340,11cyclictest3636113-21sed08:35:150
179699340,4rtkit-daemon1795-21rtkit-daemon11:08:101
179699340,4rtkit-daemon1795-21rtkit-daemon10:11:060
360071799334,9cyclictest3720545-21ssh10:43:500
360071799334,8cyclictest66950irq/132-enp2s010:01:460
3600717993328,3cyclictest892-21thermald08:54:010
360071799332,14cyclictest3695017-21rm10:08:430
179699330,4rtkit-daemon0-21swapper/011:15:321
179699330,3rtkit-daemon0-21swapper/011:39:170
360071799325,8cyclictest3683361-21ssh09:52:310
360071799324,8cyclictest3685438-21ntp_kernel_pll_09:55:200
360071799324,10cyclictest3616133-21sed07:45:180
360071799323,9cyclictest3672510-21taskset09:39:140
360071799323,7cyclictest3710796-21fschecks_time10:30:160
360071799321,8cyclictest3622644-21switchtime08:00:240
3600717993214,10cyclictest3613794-21apt-get07:40:110
360071799321,14cyclictest3649780-21python309:10:010
360071799321,12cyclictest0-21swapper/012:29:440
360071799320,9cyclictest3632556-21ntpq08:25:210
360071799320,7cyclictest3650419-21apt-get09:10:180
179699320,3rtkit-daemon0-21swapper/010:08:431
179699320,3rtkit-daemon0-21swapper/009:13:511
179699320,3rtkit-daemon0-21swapper/008:26:021
179699320,3rtkit-daemon0-21swapper/007:40:161
3600720993128,2cyclictest17150irq/131-xhci_hc12:01:431
360071799319,11cyclictest3735512-21ssh11:04:000
360071799315,10cyclictest3779396-21seq12:00:160
360071799314,7cyclictest3605871-40apt-check07:20:230
179699310,4rtkit-daemon1795-21rtkit-daemon09:28:560
179699310,4rtkit-daemon1795-21rtkit-daemon07:33:370
360071799306,8cyclictest13-21ksoftirqd/008:05:160
360071799300,8cyclictest13-21ksoftirqd/009:40:230
360071799300,7cyclictest3600898-21apt-get07:10:140
360071799300,14cyclictest3699751-21ssh10:15:150
179699300,3rtkit-daemon1795-21rtkit-daemon10:42:241
179699300,3rtkit-daemon1795-21rtkit-daemon08:12:441
3600720992923,4cyclictest3679950-21sh09:48:021
3600720992919,5cyclictest3605871-40apt-check07:20:151
360071799295,7cyclictest3730618-21ssh10:56:360
179699290,3rtkit-daemon1795-21rtkit-daemon10:29:230
179699290,3rtkit-daemon0-21swapper/012:35:181
179699290,3rtkit-daemon0-21swapper/008:15:091
179699280,3rtkit-daemon0-21swapper/008:58:471
179699280,3rtkit-daemon0-21swapper/008:36:181
179699280,3rtkit-daemon0-21swapper/008:31:181
179699280,3rtkit-daemon0-21swapper/007:10:011
179699270,3rtkit-daemon0-21swapper/008:52:271
360072099267,7cyclictest3647321-21unixbench_singl09:00:271
3600720992612,9cyclictest3687419-1kworker/u9:010:25:121
360072099261,23cyclictest3613608-21sendmail-msp07:40:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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