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2025-12-19 - 21:06
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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 Fri Dec 19, 2025 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8174112260183,60sleep00-21swapper/007:09:220
8174212258187,27sleep10-21swapper/107:09:301
9083982810,7sleep00-21swapper/010:55:190
179699760,4rtkit-daemon1795-21rtkit-daemon09:05:181
179699600,7rtkit-daemon1795-21rtkit-daemon12:20:131
179699580,4rtkit-daemon1795-21rtkit-daemon08:21:331
179699570,4rtkit-daemon1795-21rtkit-daemon08:54:551
8485812510,10sleep013-21ksoftirqd/008:25:170
179699510,3rtkit-daemon1795-21rtkit-daemon11:04:210
179699470,3rtkit-daemon1795-21rtkit-daemon11:36:451
179699380,4rtkit-daemon1795-21rtkit-daemon10:31:390
179699380,3rtkit-daemon0-21swapper/110:23:050
179699360,3rtkit-daemon0-21swapper/010:09:540
179699360,3rtkit-daemon0-21swapper/009:22:500
817602993529,4cyclictest857696-21seq08:49:510
179699350,4rtkit-daemon1795-21rtkit-daemon09:04:401
179699350,3rtkit-daemon0-21swapper/008:07:480
179699340,13rtkit-daemon13-21ksoftirqd/011:01:431
179699340,12rtkit-daemon0-21swapper/010:16:300
817607993327,4cyclictest829890-21seq07:35:511
179699330,4rtkit-daemon1795-21rtkit-daemon11:40:401
179699330,3rtkit-daemon0-21swapper/110:37:201
179699330,3rtkit-daemon0-21swapper/110:26:420
179699330,3rtkit-daemon0-21swapper/108:35:510
179699330,3rtkit-daemon0-21swapper/009:27:251
179699320,4rtkit-daemon1795-21rtkit-daemon09:32:020
8584312310,2sleep0161rcuc/008:50:190
817602993115,11cyclictest939621-21apt-get12:15:130
179699310,3rtkit-daemon1795-21rtkit-daemon08:15:250
179699310,3rtkit-daemon1795-21rtkit-daemon07:42:550
179699310,3rtkit-daemon1795-21rtkit-daemon07:30:030
179699310,3rtkit-daemon0-21swapper/111:40:470
179699310,3rtkit-daemon0-21swapper/110:54:470
179699310,3rtkit-daemon0-21swapper/110:44:000
179699310,3rtkit-daemon0-21swapper/109:04:540
179699310,2rtkit-daemon1795-21rtkit-daemon07:22:180
179699300,3rtkit-daemon0-21swapper/009:47:141
179699300,3rtkit-daemon0-21swapper/007:15:391
81760799291,6cyclictest0-21swapper/107:49:551
81760299294,6cyclictest13-21ksoftirqd/011:59:550
817602992911,2cyclictest141rcu_preempt07:15:320
179699290,3rtkit-daemon0-21swapper/112:21:530
179699290,3rtkit-daemon0-21swapper/112:06:000
179699290,3rtkit-daemon0-21swapper/111:21:420
179699290,3rtkit-daemon0-21swapper/109:16:360
179699290,3rtkit-daemon0-21swapper/108:44:410
81760299287,6cyclictest13-21ksoftirqd/007:10:190
81760299287,6cyclictest13-21ksoftirqd/007:10:190
81760299280,7cyclictest947422-21apt-get12:35:110
179699280,3rtkit-daemon1795-21rtkit-daemon08:03:581
179699280,3rtkit-daemon0-21swapper/112:28:140
179699280,3rtkit-daemon0-21swapper/110:36:040
179699280,3rtkit-daemon0-21swapper/011:11:211
179699280,3rtkit-daemon0-21swapper/010:05:101
179699280,3rtkit-daemon0-21swapper/009:23:111
817607992723,2cyclictest845637-21taskset08:16:411
81760799272,17cyclictest873952-21apt-get09:30:101
817602992712,9cyclictest875902-21apt-get09:35:130
817602992712,2cyclictest141rcu_preempt11:49:060
817602992710,4cyclictest13-21ksoftirqd/010:00:390
817602992710,3cyclictest13-21ksoftirqd/009:10:230
81760299270,8cyclictest825700-21switchtime07:25:240
9235172260,4sleep0923512-21apt-get11:35:120
81760799260,7cyclictest934005-21diskstats12:00:161
81760799260,7cyclictest0-21swapper/112:19:321
81760299263,8cyclictest13-21ksoftirqd/011:15:110
81760299262,8cyclictest13-21ksoftirqd/011:10:160
81760299262,8cyclictest13-21ksoftirqd/008:55:240
81760299262,6cyclictest0-21swapper/011:30:160
817602992611,2cyclictest141rcu_preempt09:05:360
81760299260,7cyclictest890365-21apt-get10:10:110
81760299260,7cyclictest13-21ksoftirqd/007:50:110
81760299260,7cyclictest0-21swapper/008:30:130
81760299260,24cyclictest66950irq/132-enp2s007:40:000
179699260,4rtkit-daemon1795-21rtkit-daemon08:25:381
817607992520,3cyclictest899630-21seq10:32:091
81760799251,8cyclictest284-20systemd-journal12:10:001
81760299258,10cyclictest838383-21apt-get08:00:130
81760299251,7cyclictest13-21ksoftirqd/011:05:170
81760299251,7cyclictest13-21ksoftirqd/008:10:180
817602992512,2cyclictest141rcu_preempt09:48:090
817602992512,10cyclictest945478-21apt-get12:30:120
817602992511,2cyclictest141rcu_preempt11:50:180
81760299250,7cyclictest0-21swapper/012:10:130
81760299250,7cyclictest0-21swapper/009:25:130
179699250,1rtkit-daemon1795-21rtkit-daemon11:55:011
81760799249,4cyclictest842664-21taskset08:10:181
817607992416,6cyclictest921823-21fschecks_count11:30:181
81760799240,8cyclictest850325-21grep08:30:161
81760799240,6cyclictest878184-21fschecks_time09:40:181
81760299241,6cyclictest902395-21kworker/0:010:45:150
81760299240,8cyclictest13-21ksoftirqd/009:55:170
81760299240,7cyclictest13-21ksoftirqd/007:55:160
81760299240,6cyclictest0-21swapper/009:50:150
81760299240,6cyclictest0-21swapper/008:20:140
81760299240,6cyclictest0-21swapper/007:45:140
179699240,4rtkit-daemon1795-21rtkit-daemon09:58:311
179699240,1rtkit-daemon1795-21rtkit-daemon10:47:241
179699240,16rtkit-daemon856188-21df_inode08:45:131
81760799238,13cyclictest0-21swapper/110:26:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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