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2026-01-09 - 13:42
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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 Jan 09, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5156112265186,62sleep00-21swapper/019:09:470
5155852261188,24sleep10-21swapper/119:09:291
179699720,6rtkit-daemon1795-21rtkit-daemon00:12:000
6034612610,3sleep10-21swapper/122:00:161
179699580,4rtkit-daemon1795-21rtkit-daemon21:20:071
6017872520,5sleep00-21swapper/021:57:350
6812422500,1chrt680837-21/usr/sbin/munin23:40:181
179699500,4rtkit-daemon1795-21rtkit-daemon00:26:560
179699490,3rtkit-daemon1795-21rtkit-daemon22:23:481
6727082460,5sleep10-21swapper/123:29:361
179699460,4rtkit-daemon1795-21rtkit-daemon20:57:181
179699460,3rtkit-daemon1795-21rtkit-daemon22:15:561
179699450,3rtkit-daemon1795-21rtkit-daemon22:07:431
6191022400,1sleep0619103-21ssh22:20:120
179699400,11rtkit-daemon706709-21ssh00:14:101
179699380,3rtkit-daemon0-21swapper/119:42:481
179699370,3rtkit-daemon0-21swapper/021:28:440
179699370,3rtkit-daemon0-21swapper/020:06:121
179699360,3rtkit-daemon0-21swapper/123:33:311
179699360,3rtkit-daemon0-21swapper/122:35:271
179699350,4rtkit-daemon0-21swapper/120:59:320
179699350,3rtkit-daemon1795-21rtkit-daemon22:39:080
179699350,3rtkit-daemon0-21swapper/123:13:581
179699340,4rtkit-daemon1795-21rtkit-daemon23:03:141
179699340,4rtkit-daemon1795-21rtkit-daemon22:26:141
179699340,4rtkit-daemon1795-21rtkit-daemon21:15:430
179699340,4rtkit-daemon1795-21rtkit-daemon00:19:530
179699340,3rtkit-daemon0-21swapper/121:57:181
179699340,3rtkit-daemon0-21swapper/121:52:010
179699340,3rtkit-daemon0-21swapper/020:05:440
179699340,3rtkit-daemon0-21swapper/020:02:310
51573199332,3cyclictest141rcu_preempt23:00:011
179699330,3rtkit-daemon1795-21rtkit-daemon21:10:180
179699330,3rtkit-daemon0-21swapper/123:12:000
179699330,3rtkit-daemon0-21swapper/122:56:360
179699330,3rtkit-daemon0-21swapper/100:05:560
179699330,3rtkit-daemon0-21swapper/000:22:411
51573199320,8cyclictest527990-21sendmail19:40:001
51572399328,10cyclictest556089-21apt-get20:50:110
51572399325,6cyclictest13-21ksoftirqd/021:44:530
179699320,4rtkit-daemon590933-21ssh21:44:061
179699320,4rtkit-daemon1795-21rtkit-daemon20:21:250
179699320,4rtkit-daemon0-21swapper/000:16:071
179699320,3rtkit-daemon1795-21rtkit-daemon19:57:430
51572399315,3cyclictest141rcu_preempt00:00:000
51572399311,10cyclictest13-21ksoftirqd/023:25:140
179699310,4rtkit-daemon1795-21rtkit-daemon20:43:010
179699310,3rtkit-daemon1795-21rtkit-daemon23:58:471
179699310,3rtkit-daemon1795-21rtkit-daemon21:21:530
179699310,3rtkit-daemon0-21swapper/122:13:000
179699310,3rtkit-daemon0-21swapper/121:48:430
179699310,3rtkit-daemon0-21swapper/020:30:131
51572399307,9cyclictest580111-21apt-get21:30:120
51572399304,6cyclictest13-21ksoftirqd/023:20:170
51572399304,6cyclictest13-21ksoftirqd/023:20:170
179699300,3rtkit-daemon0-21swapper/020:23:481
51573199293,9cyclictest722553-21apt-get00:35:131
51572399297,6cyclictest13-21ksoftirqd/022:26:270
51572399296,6cyclictest13-21ksoftirqd/019:10:190
515723992922,5cyclictest676827-21munin-run23:35:000
51572399291,3cyclictest141rcu_preempt23:45:010
179699290,3rtkit-daemon1795-21rtkit-daemon23:24:291
179699290,3rtkit-daemon1795-21rtkit-daemon23:24:291
179699290,3rtkit-daemon0-21swapper/122:45:130
179699290,3rtkit-daemon0-21swapper/122:31:440
179699290,3rtkit-daemon0-21swapper/000:34:461
51573199280,7cyclictest540284-21head20:10:161
51572399286,6cyclictest607311-40apt-check22:05:060
515723992822,4cyclictest546072-21cut20:25:160
51572399281,7cyclictest684658-21apt-get23:45:120
515723992813,4cyclictest13-21ksoftirqd/022:44:270
515723992813,4cyclictest13-21ksoftirqd/000:21:000
515723992811,2cyclictest141rcu_preempt00:01:520
51572399280,7cyclictest661869-21apt-get23:15:120
51572399280,2cyclictest141rcu_preempt23:55:000
179699280,3rtkit-daemon0-21swapper/121:02:130
179699280,3rtkit-daemon0-21swapper/019:56:241
179699280,23rtkit-daemon515719-21cyclictest19:39:550
51573199272,20cyclictest552148-40apt-check20:40:211
51573199270,6cyclictest26-21ksoftirqd/122:50:171
51572399279,4cyclictest141rcu_preempt22:00:120
51572399277,10cyclictest13-21ksoftirqd/021:39:510
51572399276,6cyclictest13-21ksoftirqd/020:30:240
51572399276,6cyclictest13-21ksoftirqd/019:25:180
515723992713,3cyclictest13-21ksoftirqd/019:48:420
515723992712,4cyclictest13-21ksoftirqd/022:54:550
515723992712,4cyclictest13-21ksoftirqd/020:15:150
515723992711,2cyclictest141rcu_preempt20:12:280
515723992711,1cyclictest141rcu_preempt22:17:580
51572399270,6cyclictest0-21swapper/020:45:250
179699270,3rtkit-daemon0-21swapper/119:21:010
179699270,3rtkit-daemon0-21swapper/021:13:471
51573199261,8cyclictest612828-21users22:10:261
51573199260,10cyclictest26-21ksoftirqd/121:30:241
51572399264,11cyclictest13-21ksoftirqd/000:32:450
515723992613,3cyclictest13-21ksoftirqd/023:36:580
515723992611,4cyclictest13-21ksoftirqd/023:05:370
179699260,20rtkit-daemon515719-21cyclictest19:30:230
5194322250,4sleep00-21swapper/019:15:230
51573199250,8cyclictest640626-21ssh22:46:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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