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2026-05-04 - 04:40
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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 highest latencies:
System rackcslot4.osadl.org (updated Mon May 04, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38399402258184,59sleep00-21swapper/019:05:500
38402882255183,57sleep10-21swapper/119:09:341
38935162610,4sleep03893514-21seq21:15:170
384047099463,14cyclictest4021997-21apt-get00:05:121
179699450,3rtkit-daemon0-21swapper/021:53:570
39751082440,4sleep00-21swapper/023:02:590
384047099423,12cyclictest4044280-21apt-get00:35:141
3840470994114,9cyclictest3907637-21sh21:33:501
3840470994113,9cyclictest3945829-21sh22:24:331
3840470993935,2cyclictest4032811-21latency_hist00:20:011
384047099392,20cyclictest3953627-21latency_hist22:35:011
384047099392,13cyclictest3980543-21apt-get23:10:121
3840470993914,9cyclictest4043228-21sh00:33:151
3840470993914,9cyclictest4043228-21sh00:33:141
3840470993911,9cyclictest3987550-21sh23:19:431
384046599397,9cyclictest66950irq/132-enp2s021:10:140
179699390,3rtkit-daemon0-21swapper/021:47:550
3840470993812,8cyclictest3937146-21sh22:12:101
384047099379,9cyclictest3917604-21sh21:46:141
384047099372,13cyclictest3927055-21apt-get22:00:121
384047099372,12cyclictest3991672-21apt-get23:25:121
384046599379,8cyclictest3964445-21sh22:49:200
384046599379,8cyclictest3964445-21sh22:49:200
3840465993712,8cyclictest4005349-21sh23:42:560
384046599368,8cyclictest3953394-21sh22:34:310
384046599364,18cyclictest3847433-21/usr/sbin/munin19:25:240
384047099355,11cyclictest3888717-21diskmemload21:41:571
384047099351,12cyclictest39721842sleep122:59:531
384046599358,3cyclictest141rcu_preempt20:55:240
384046599354,7cyclictest3859913-21ntpq19:55:200
3840465993513,15cyclictest3923253-21apt-get21:55:130
3840465993510,8cyclictest4029158-21sh00:15:060
384047099349,9cyclictest3964139-21sh22:48:441
384047099349,9cyclictest3964139-21sh22:48:441
384047099341,16cyclictest26-21ksoftirqd/123:54:561
384047099341,14cyclictest38786722sleep120:42:171
384047099341,13cyclictest38588062sleep119:53:251
3840470993410,9cyclictest3990870-21sh23:23:411
384046599348,8cyclictest4013090-21sh23:53:220
384046599348,3cyclictest141rcu_preempt22:43:510
384047099338,9cyclictest4001556-21sh23:37:421
384047099335,11cyclictest3879910-21ntpq20:45:221
384047099331,12cyclictest38884442sleep121:07:201
384047099331,12cyclictest38490342sleep119:28:221
384047099331,11cyclictest38566022sleep119:45:431
384047099330,13cyclictest38669722sleep120:12:471
384047099330,10cyclictest3888717-21diskmemload21:27:401
384046599334,16cyclictest141rcu_preempt23:20:120
3840465993310,4cyclictest141rcu_preempt23:55:130
384047099329,8cyclictest850-21runrttasks19:55:261
3840470993214,10cyclictest4018225-21apt-get00:00:131
384047099321,11cyclictest38469802chrt19:22:151
384047099320,12cyclictest38651882sleep120:09:331
384047099320,11cyclictest38547352sleep119:41:341
384046599328,3cyclictest141rcu_preempt22:55:170
384047099319,2cyclictest141rcu_preempt23:40:211
384047099318,12cyclictest3862720-21seq20:03:221
384047099317,10cyclictest141rcu_preempt21:50:131
384047099316,12cyclictest3895755-21ssh21:18:071
384047099312,21cyclictest141rcu_preempt23:05:421
384047099311,11cyclictest38509482sleep119:33:011
384047099311,11cyclictest38449942sleep119:17:071
384047099310,12cyclictest38726392sleep120:25:351
384046599319,3cyclictest141rcu_preempt21:35:380
384046599319,3cyclictest141rcu_preempt19:30:240
384046599319,3cyclictest141rcu_preempt19:15:240
384046599319,3cyclictest141rcu_preempt19:10:180
384046599319,2cyclictest141rcu_preempt22:05:210
384046599315,2cyclictest141rcu_preempt20:01:080
3840465993110,3cyclictest141rcu_preempt21:30:180
3840465993110,3cyclictest141rcu_preempt20:50:150
384046599310,11cyclictest4027321-21sh00:11:320
384047099300,10cyclictest40081662chrt23:45:551
384046599309,3cyclictest141rcu_preempt23:15:240
384046599309,3cyclictest141rcu_preempt22:20:000
384046599309,3cyclictest141rcu_preempt00:20:150
384046599307,9cyclictest141rcu_preempt20:30:120
384046599306,10cyclictest141rcu_preempt21:00:100
384046599306,10cyclictest141rcu_preempt19:50:120
384046599305,13cyclictest141rcu_preempt22:35:420
3840465993013,4cyclictest13-21ksoftirqd/020:05:210
3840465993012,3cyclictest141rcu_preempt00:30:140
3840465993012,3cyclictest141rcu_preempt00:30:140
3840465993010,3cyclictest141rcu_preempt23:38:020
3840465993010,3cyclictest141rcu_preempt22:25:190
3840465993010,3cyclictest141rcu_preempt00:25:200
384047099299,3cyclictest141rcu_preempt00:25:121
384047099299,3cyclictest141rcu_preempt00:10:141
384046599299,3cyclictest141rcu_preempt23:05:140
384046599299,3cyclictest141rcu_preempt22:10:030
384046599298,3cyclictest141rcu_preempt23:48:190
384046599298,3cyclictest141rcu_preempt23:30:190
384046599298,3cyclictest141rcu_preempt22:50:240
384046599298,3cyclictest141rcu_preempt22:20:140
384046599298,3cyclictest141rcu_preempt21:40:220
384046599298,3cyclictest141rcu_preempt20:40:250
384046599298,3cyclictest141rcu_preempt19:45:200
384046599297,2cyclictest141rcu_preempt20:10:170
3840465992911,3cyclictest141rcu_preempt23:28:200
3840465992910,3cyclictest141rcu_preempt20:35:250
3840465992910,3cyclictest141rcu_preempt19:20:140
3840465992910,3cyclictest141rcu_preempt00:35:140
3840465992910,2cyclictest141rcu_preempt00:06:580
384047099289,3cyclictest141rcu_preempt23:00:121
384047099288,3cyclictest141rcu_preempt00:20:121
3840470992812,3cyclictest26-21ksoftirqd/121:35:281
384046599289,3cyclictest141rcu_preempt23:10:230
384046599289,3cyclictest141rcu_preempt21:25:230
384046599289,3cyclictest141rcu_preempt21:05:240
384046599289,3cyclictest141rcu_preempt20:25:130
384046599289,3cyclictest141rcu_preempt00:04:270
384046599288,3cyclictest141rcu_preempt21:20:210
384046599288,3cyclictest141rcu_preempt19:35:260
384046599288,2cyclictest141rcu_preempt19:40:220
384046599287,2cyclictest141rcu_preempt20:20:210
384046599286,4cyclictest141rcu_preempt20:45:130
384047099279,2cyclictest141rcu_preempt20:38:421
384047099279,11cyclictest4014531-21apt-get23:55:111
384047099278,2cyclictest141rcu_preempt22:41:151
384047099278,2cyclictest141rcu_preempt22:27:221
384047099277,3cyclictest26-21ksoftirqd/122:08:081
384047099277,2cyclictest141rcu_preempt22:17:081
384047099276,2cyclictest141rcu_preempt20:20:241
384046599277,3cyclictest141rcu_preempt20:15:210
384046599276,3cyclictest141rcu_preempt22:00:400
384047099268,3cyclictest141rcu_preempt20:50:181
384047099267,5cyclictest26-21ksoftirqd/121:20:351
384047099267,3cyclictest141rcu_preempt21:56:321
384047099267,2cyclictest141rcu_preempt22:52:311
384047099265,2cyclictest141rcu_preempt21:10:201
3840470992610,2cyclictest141rcu_preempt22:36:311
384047099259,3cyclictest141rcu_preempt20:56:151
384047099256,3cyclictest26-21ksoftirqd/119:10:151
384047099256,2cyclictest141rcu_preempt21:02:121
3840470992512,6cyclictest3995312-21apt-get23:30:111
384047099237,4cyclictest26-21ksoftirqd/119:39:071
384047099224,2cyclictest141rcu_preempt20:15:241
384047099215,2cyclictest141rcu_preempt20:30:101
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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