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2026-04-15 - 23:12
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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 15, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171544023710,10sleep00-21swapper/007:05:150
17167022265187,28sleep10-21swapper/107:07:041
179699620,4rtkit-daemon1795-21rtkit-daemon10:03:211
179699550,4rtkit-daemon1795-21rtkit-daemon12:00:180
18073622540,5sleep126-21ksoftirqd/110:09:071
179699540,4rtkit-daemon1795-21rtkit-daemon11:41:321
179699510,4rtkit-daemon1795-21rtkit-daemon07:10:370
179699490,4rtkit-daemon1795-21rtkit-daemon10:26:480
17564812460,2sleep11756482-21cat08:45:231
179699410,3rtkit-daemon1795-21rtkit-daemon07:29:460
179699380,3rtkit-daemon0-21swapper/010:38:060
179699380,3rtkit-daemon0-21swapper/008:30:460
179699370,4rtkit-daemon1795-21rtkit-daemon09:05:121
179699370,3rtkit-daemon0-21swapper/111:30:271
179699370,3rtkit-daemon0-21swapper/111:21:471
179699370,3rtkit-daemon0-21swapper/010:44:520
179699370,3rtkit-daemon0-21swapper/010:31:150
179699350,5rtkit-daemon1816880-21ssh10:20:281
179699350,4rtkit-daemon1795-21rtkit-daemon11:03:420
179699350,4rtkit-daemon1795-21rtkit-daemon08:15:271
179699350,3rtkit-daemon1795-21rtkit-daemon12:35:270
179699350,3rtkit-daemon0-21swapper/011:52:040
179699330,4rtkit-daemon1795-21rtkit-daemon10:58:180
179699330,4rtkit-daemon1795-21rtkit-daemon10:53:400
179699330,4rtkit-daemon1795-21rtkit-daemon09:22:110
179699330,4rtkit-daemon1795-21rtkit-daemon09:03:051
179699330,3rtkit-daemon1795-21rtkit-daemon10:19:160
179699330,3rtkit-daemon0-21swapper/109:07:380
179699330,3rtkit-daemon0-21swapper/109:00:560
179699330,3rtkit-daemon0-21swapper/007:28:361
179699330,3rtkit-daemon0-21swapper/007:10:021
1717115993319,12cyclictest1892350-21sh12:10:010
1717115993310,3cyclictest13-21ksoftirqd/009:30:110
179699320,4rtkit-daemon1795-21rtkit-daemon07:30:510
179699320,3rtkit-daemon1795-21rtkit-daemon10:11:390
179699320,3rtkit-daemon1795-21rtkit-daemon10:06:000
179699320,3rtkit-daemon1795-21rtkit-daemon08:59:581
179699310,7rtkit-daemon1879761-21kworker/u8:111:58:381
179699310,3rtkit-daemon1795-21rtkit-daemon11:28:501
1717119993128,2cyclictest66950irq/132-enp2s012:03:471
171711599314,2cyclictest141rcu_preempt11:15:010
1717115993113,4cyclictest13-21ksoftirqd/011:45:120
1717115993110,3cyclictest13-21ksoftirqd/011:23:300
179699300,3rtkit-daemon1795-21rtkit-daemon09:48:271
179699300,3rtkit-daemon1795-21rtkit-daemon09:40:591
179699300,3rtkit-daemon1795-21rtkit-daemon09:40:591
179699300,3rtkit-daemon0-21swapper/109:40:270
179699300,3rtkit-daemon0-21swapper/109:40:260
179699300,3rtkit-daemon0-21swapper/010:32:051
179699300,3rtkit-daemon0-21swapper/009:25:501
171711999305,3cyclictest1765071-21diskmemload12:17:001
171711599309,4cyclictest13-21ksoftirqd/008:09:110
1717115993010,6cyclictest13-21ksoftirqd/009:35:140
179699290,4rtkit-daemon1795-21rtkit-daemon08:39:170
179699290,3rtkit-daemon1795-21rtkit-daemon10:26:181
179699290,3rtkit-daemon0-21swapper/111:41:390
179699290,3rtkit-daemon0-21swapper/111:15:100
1717119992926,2cyclictest66950irq/132-enp2s010:14:061
171711599299,3cyclictest13-21ksoftirqd/009:50:110
171711599297,3cyclictest13-21ksoftirqd/012:15:230
1717115992914,9cyclictest1778183-21kworker/u8:109:55:130
1717115992910,4cyclictest13-21ksoftirqd/010:22:420
179699280,3rtkit-daemon1795-21rtkit-daemon09:16:000
179699280,3rtkit-daemon0-21swapper/111:34:280
179699280,3rtkit-daemon0-21swapper/011:14:211
179699280,3rtkit-daemon0-21swapper/010:38:211
1717119992823,3cyclictest1839360-21python310:55:001
1717115992810,3cyclictest13-21ksoftirqd/008:13:110
179699270,21rtkit-daemon1717110-21cyclictest11:50:171
171711999273,18cyclictest1840000-21apt-get10:55:131
1717119992723,2cyclictest66950irq/132-enp2s010:40:101
1717119992714,11cyclictest26-21ksoftirqd/112:05:021
1717119992711,11cyclictest1793985-21apt-get09:50:141
171711999270,6cyclictest0-21swapper/109:25:011
171711999270,6cyclictest0-21swapper/109:16:401
171711599279,3cyclictest141rcu_preempt12:21:020
171711599270,3cyclictest141rcu_preempt11:40:010
179699260,3rtkit-daemon0-21swapper/012:36:381
179699260,3rtkit-daemon0-21swapper/011:49:281
179699260,21rtkit-daemon1847419-21expr11:05:171
179699260,21rtkit-daemon1717110-21cyclictest08:36:551
179699260,20rtkit-daemon1717110-21cyclictest07:30:571
179699260,1rtkit-daemon1795-21rtkit-daemon09:39:591
171711999260,7cyclictest0-21swapper/107:57:501
171711999260,6cyclictest0-21swapper/110:16:331
171711999260,6cyclictest0-21swapper/108:34:101
171711999260,6cyclictest0-21swapper/107:37:051
1717115992613,3cyclictest13-21ksoftirqd/010:00:130
1717115992611,3cyclictest13-21ksoftirqd/009:12:350
1717115992611,2cyclictest141rcu_preempt10:48:140
179699250,20rtkit-daemon1717110-21cyclictest09:47:540
179699250,1rtkit-daemon1795-21rtkit-daemon09:31:001
1717119992523,1cyclictest0-21swapper/111:19:561
171711599258,3cyclictest141rcu_preempt08:50:120
171711599256,3cyclictest13-21ksoftirqd/011:05:130
171711599253,2cyclictest141rcu_preempt07:50:230
171711599251,6cyclictest1843868-21kworker/0:211:25:190
171711599250,6cyclictest1882652-21ssh11:55:210
179699240,4rtkit-daemon1795-21rtkit-daemon07:23:521
179699240,3rtkit-daemon0-21swapper/012:34:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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