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2026-04-08 - 18:40
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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 Apr 08, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39754082316275,27sleep10-21swapper/107:08:281
39752232270207,47sleep00-21swapper/007:06:290
179699700,4rtkit-daemon1795-21rtkit-daemon09:48:471
179699700,4rtkit-daemon1795-21rtkit-daemon09:22:411
40024582600,1sleep00-21swapper/008:15:140
179699600,4rtkit-daemon1795-21rtkit-daemon09:18:500
179699560,4rtkit-daemon4034084-21ssh09:20:350
179699560,3rtkit-daemon0-21swapper/110:26:320
179699540,4rtkit-daemon1795-21rtkit-daemon12:19:570
179699530,3rtkit-daemon0-21swapper/107:56:310
179699520,4rtkit-daemon1795-21rtkit-daemon12:31:111
179699510,4rtkit-daemon1795-21rtkit-daemon10:26:211
179699510,4rtkit-daemon1795-21rtkit-daemon10:22:091
179699510,4rtkit-daemon1795-21rtkit-daemon09:12:481
179699510,23rtkit-daemon3975671-21cyclictest11:35:460
179699500,4rtkit-daemon1795-21rtkit-daemon12:02:581
179699490,4rtkit-daemon1795-21rtkit-daemon07:38:581
179699490,3rtkit-daemon1795-21rtkit-daemon08:42:221
179699480,4rtkit-daemon1795-21rtkit-daemon12:07:291
179699480,2rtkit-daemon1795-21rtkit-daemon10:37:301
179699460,3rtkit-daemon1795-21rtkit-daemon10:15:491
179699430,6rtkit-daemon4159950-21sh12:20:180
179699420,3rtkit-daemon1795-21rtkit-daemon10:08:441
41011592400,1sleep04101158-21sendmail_mailst10:55:210
397568399380,36cyclictest26-21ksoftirqd/107:40:271
179699380,3rtkit-daemon0-21swapper/011:28:020
179699370,4rtkit-daemon1795-21rtkit-daemon10:30:501
179699370,4rtkit-daemon1795-21rtkit-daemon09:37:160
179699370,3rtkit-daemon0-21swapper/008:32:390
3975683993629,5cyclictest4010867-21taskset08:35:171
179699360,3rtkit-daemon0-21swapper/109:14:110
179699350,5rtkit-daemon4160638-21memory12:20:341
179699350,4rtkit-daemon1795-21rtkit-daemon09:52:191
179699350,3rtkit-daemon0-21swapper/111:51:380
179699340,4rtkit-daemon1795-21rtkit-daemon11:19:581
179699340,4rtkit-daemon1795-21rtkit-daemon09:03:351
179699340,3rtkit-daemon0-21swapper/011:46:290
179699330,4rtkit-daemon1795-21rtkit-daemon08:58:221
179699330,4rtkit-daemon0-21swapper/108:55:030
179699330,3rtkit-daemon1795-21rtkit-daemon11:50:511
179699330,2rtkit-daemon1795-21rtkit-daemon08:02:331
179699320,4rtkit-daemon1795-21rtkit-daemon10:11:261
179699320,4rtkit-daemon1795-21rtkit-daemon09:58:541
179699320,4rtkit-daemon1795-21rtkit-daemon07:19:551
179699320,3rtkit-daemon1795-21rtkit-daemon11:24:070
179699320,3rtkit-daemon1795-21rtkit-daemon08:29:460
179699320,3rtkit-daemon1795-21rtkit-daemon07:28:021
179699320,3rtkit-daemon0-21swapper/111:55:500
179699320,3rtkit-daemon0-21swapper/110:40:200
179699320,3rtkit-daemon0-21swapper/107:18:340
179699320,3rtkit-daemon0-21swapper/011:42:581
179699320,3rtkit-daemon0-21swapper/011:38:051
179699320,3rtkit-daemon0-21swapper/008:31:371
3975683993129,1cyclictest0-21swapper/108:20:151
179699310,5rtkit-daemon3986322-21sshd07:33:280
179699310,4rtkit-daemon1795-21rtkit-daemon09:08:181
179699310,4rtkit-daemon1795-21rtkit-daemon08:08:401
179699310,3rtkit-daemon1795-21rtkit-daemon10:48:571
179699310,3rtkit-daemon0-21swapper/110:03:550
179699310,3rtkit-daemon0-21swapper/008:26:011
3975683993023,5cyclictest4136743-21sh11:46:261
179699300,4rtkit-daemon1795-21rtkit-daemon09:55:410
179699300,3rtkit-daemon1795-21rtkit-daemon07:59:311
179699300,3rtkit-daemon0-21swapper/112:32:450
179699300,3rtkit-daemon0-21swapper/110:50:050
179699300,3rtkit-daemon0-21swapper/107:40:100
179699300,3rtkit-daemon0-21swapper/012:14:001
179699300,2rtkit-daemon1795-21rtkit-daemon07:48:451
179699300,24rtkit-daemon768-21irqbalance08:05:140
3975683992914,9cyclictest4024785-1kworker/u9:109:25:121
3975678992925,2cyclictest66950irq/132-enp2s010:05:020
179699290,3rtkit-daemon0-21swapper/112:07:350
179699290,3rtkit-daemon0-21swapper/111:16:250
179699290,3rtkit-daemon0-21swapper/110:22:280
179699290,3rtkit-daemon0-21swapper/110:19:400
179699290,3rtkit-daemon0-21swapper/108:36:160
179699290,3rtkit-daemon0-21swapper/010:56:251
179699280,3rtkit-daemon0-21swapper/107:54:050
179699280,3rtkit-daemon0-21swapper/010:52:571
179699280,23rtkit-daemon893-21snmpd09:29:380
179699280,1rtkit-daemon1795-21rtkit-daemon09:18:161
3975683992711,10cyclictest4054683-21kworker/u8:110:40:101
3975683992710,12cyclictest4163769-21apt-get12:25:141
179699270,3rtkit-daemon0-21swapper/108:24:200
179699270,3rtkit-daemon0-21swapper/107:39:250
397568399265,3cyclictest141rcu_preempt12:20:001
397568399262,17cyclictest4124561-21apt-get11:30:121
397568399260,21cyclictest3980793-40apt-check07:20:191
397567899262,16cyclictest3990662-21apt-get07:45:120
3975678992619,5cyclictest3980793-40apt-check07:20:150
3975678992613,11cyclictest13-21ksoftirqd/011:04:590
179699260,3rtkit-daemon0-21swapper/108:48:100
179699260,20rtkit-daemon3975671-21cyclictest10:38:210
179699260,1rtkit-daemon1795-21rtkit-daemon11:10:120
397568399252,16cyclictest4103704-21apt-get11:00:131
3975678992511,12cyclictest13-21ksoftirqd/012:25:020
397567899250,6cyclictest0-21swapper/009:33:530
179699250,1rtkit-daemon1795-21rtkit-daemon11:30:020
397568399245,6cyclictest4064057-1kworker/u9:011:06:581
397568399243,14cyclictest4141928-21apt-get11:55:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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