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2026-05-23 - 05:31
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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 Sat May 23, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33920212267225,28sleep00-21swapper/019:07:020
33922652259187,28sleep10-21swapper/119:09:401
349489321490,2sleep00-21swapper/022:16:190
179699700,4rtkit-daemon1795-21rtkit-daemon21:29:000
179699680,3rtkit-daemon1795-21rtkit-daemon20:00:170
179699550,4rtkit-daemon1795-21rtkit-daemon22:24:330
179699550,4rtkit-daemon1795-21rtkit-daemon22:24:330
34635962530,3chrt0-21swapper/021:39:310
179699530,4rtkit-daemon1795-21rtkit-daemon00:26:121
179699500,4rtkit-daemon1795-21rtkit-daemon23:59:220
179699490,3rtkit-daemon1795-21rtkit-daemon00:11:290
179699480,4rtkit-daemon1795-21rtkit-daemon21:51:460
179699480,4rtkit-daemon1795-21rtkit-daemon00:16:350
3392447994712,7cyclictest26-21ksoftirqd/121:39:481
3392443994710,7cyclictest13-21ksoftirqd/023:50:010
179699470,4rtkit-daemon1795-21rtkit-daemon00:32:210
339244399450,9cyclictest13-21ksoftirqd/019:45:010
34170722440,3sleep03392438-21cyclictest20:10:130
34577002430,2sleep03457701-21sh21:30:510
179699430,3rtkit-daemon0-21swapper/019:15:150
339244399421,8cyclictest13-21ksoftirqd/022:37:130
339244399421,8cyclictest13-21ksoftirqd/021:40:220
339244399420,9cyclictest3537460-21/usr/sbin/munin23:15:000
339244399411,8cyclictest13-21ksoftirqd/022:50:010
339244399411,8cyclictest13-21ksoftirqd/022:30:000
339244399410,8cyclictest13-21ksoftirqd/022:31:220
339244399410,8cyclictest13-21ksoftirqd/019:50:010
339244799403,24cyclictest3567114-21python323:55:011
339244399400,8cyclictest13-21ksoftirqd/023:10:020
339244399390,7cyclictest3444891-21apt-get21:15:120
179699390,7rtkit-daemon3525292-21ssh22:57:060
179699390,3rtkit-daemon0-21swapper/023:31:000
179699390,3rtkit-daemon0-21swapper/023:30:590
339244399381,7cyclictest13-21ksoftirqd/019:15:010
339244399381,21cyclictest13-21ksoftirqd/000:00:120
339244399380,8cyclictest13-21ksoftirqd/020:50:390
179699380,3rtkit-daemon0-21swapper/120:02:501
339244399374,4cyclictest13-21ksoftirqd/020:50:000
339244399374,4cyclictest13-21ksoftirqd/020:20:010
339244399373,4cyclictest13-21ksoftirqd/000:10:000
339244399373,3cyclictest13-21ksoftirqd/023:40:000
339244399372,3cyclictest13-21ksoftirqd/022:05:000
339244399370,9cyclictest13-21ksoftirqd/023:20:250
339244399370,8cyclictest13-21ksoftirqd/022:45:000
339244399364,4cyclictest13-21ksoftirqd/020:35:030
339244399363,4cyclictest13-21ksoftirqd/020:00:010
339244399363,3cyclictest13-21ksoftirqd/019:35:000
339244399362,3cyclictest13-21ksoftirqd/000:25:010
339244399361,12cyclictest34500562unixbench-2d21:20:260
339244399360,8cyclictest13-21ksoftirqd/020:25:240
179699360,5rtkit-daemon2005754-1kworker/u9:121:55:090
179699360,3rtkit-daemon1795-21rtkit-daemon22:37:241
339244399351,4cyclictest13-21ksoftirqd/022:10:010
339244399350,8cyclictest13-21ksoftirqd/023:30:000
339244399350,8cyclictest13-21ksoftirqd/021:00:010
339244399350,7cyclictest13-21ksoftirqd/023:45:000
179699350,4rtkit-daemon1795-21rtkit-daemon23:38:471
179699350,3rtkit-daemon0-21swapper/021:25:111
34675422340,28sleep13467752-2190-updates-avai21:40:211
339244399343,4cyclictest13-21ksoftirqd/023:20:010
179699340,4rtkit-daemon1795-21rtkit-daemon23:43:201
179699340,4rtkit-daemon1795-21rtkit-daemon21:01:330
179699340,4rtkit-daemon1795-21rtkit-daemon20:20:360
179699340,3rtkit-daemon1795-21rtkit-daemon21:31:191
179699340,3rtkit-daemon1795-21rtkit-daemon21:10:531
179699340,3rtkit-daemon0-21swapper/120:11:041
3392447993310,6cyclictest26-21ksoftirqd/100:00:001
339244399333,3cyclictest13-21ksoftirqd/022:55:010
339244399333,3cyclictest13-21ksoftirqd/020:40:010
339244399333,3cyclictest13-21ksoftirqd/019:25:010
179699330,3rtkit-daemon0-21swapper/019:50:240
179699330,2rtkit-daemon1795-21rtkit-daemon20:15:381
339244399322,3cyclictest13-21ksoftirqd/022:15:020
339244399322,3cyclictest13-21ksoftirqd/021:15:000
339244399322,3cyclictest13-21ksoftirqd/020:10:010
339244399322,3cyclictest13-21ksoftirqd/000:30:000
179699320,4rtkit-daemon1795-21rtkit-daemon22:09:501
179699320,4rtkit-daemon1795-21rtkit-daemon19:40:421
179699320,3rtkit-daemon1795-21rtkit-daemon21:16:461
179699320,3rtkit-daemon0-21swapper/121:04:581
179699320,3rtkit-daemon0-21swapper/120:30:370
339244799319,2cyclictest141rcu_preempt21:50:011
339244399311,7cyclictest3440708-21diskmemload23:00:110
339244399310,8cyclictest3563524-21chrt23:50:090
339244399310,8cyclictest13-21ksoftirqd/000:35:240
179699310,4rtkit-daemon1795-21rtkit-daemon20:40:431
179699310,3rtkit-daemon0-21swapper/022:27:321
179699310,3rtkit-daemon0-21swapper/019:45:471
339244799309,8cyclictest26-21ksoftirqd/123:30:231
339244799309,8cyclictest26-21ksoftirqd/123:30:221
3392447993017,11cyclictest26-21ksoftirqd/122:00:001
339244799300,9cyclictest251rcuc/119:10:221
339244399300,8cyclictest13-21ksoftirqd/019:25:240
179699300,4rtkit-daemon1795-21rtkit-daemon19:32:481
179699300,3rtkit-daemon0-21swapper/022:49:571
339244799298,9cyclictest26-21ksoftirqd/123:29:371
339244399294,2cyclictest141rcu_preempt21:10:010
339244399291,9cyclictest13-21ksoftirqd/021:45:130
179699290,4rtkit-daemon1795-21rtkit-daemon23:11:181
179699290,3rtkit-daemon1795-21rtkit-daemon19:58:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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