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2026-05-21 - 15:52
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Thu May 21, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26951582258186,57sleep00-21swapper/007:07:160
26952122252185,52sleep10-21swapper/107:07:521
28801212770,5sleep02880117-21/usr/sbin/munin12:10:190
179699680,5rtkit-daemon1795-21rtkit-daemon08:54:261
28981892660,4sleep12898172-21apt-get12:35:121
28150522660,10sleep126-21ksoftirqd/110:43:301
28782482610,4sleep00-21swapper/012:07:310
179699600,4rtkit-daemon1795-21rtkit-daemon10:23:001
179699600,4rtkit-daemon1795-21rtkit-daemon10:10:191
179699590,5rtkit-daemon1795-21rtkit-daemon07:10:111
28627722570,5sleep10-21swapper/111:46:431
26980132570,4sleep02697995-21users07:15:030
179699550,4rtkit-daemon1795-21rtkit-daemon11:32:461
179699550,4rtkit-daemon1795-21rtkit-daemon07:34:151
179699540,4rtkit-daemon1795-21rtkit-daemon10:29:161
179699540,3rtkit-daemon1795-21rtkit-daemon11:55:111
179699510,3rtkit-daemon1795-21rtkit-daemon09:48:451
179699510,3rtkit-daemon0-21swapper/007:52:440
179699500,4rtkit-daemon1795-21rtkit-daemon07:40:160
179699500,3rtkit-daemon0-21swapper/008:23:060
27634832490,28sleep02763492-21ssh09:33:580
179699470,3rtkit-daemon1795-21rtkit-daemon08:13:440
179699470,3rtkit-daemon0-21swapper/109:06:371
179699470,1rtkit-daemon1795-21rtkit-daemon09:40:420
179699470,1rtkit-daemon1795-21rtkit-daemon09:40:420
179699470,1rtkit-daemon1795-21rtkit-daemon09:18:260
179699460,3rtkit-daemon0-21swapper/107:36:111
179699450,3rtkit-daemon1795-21rtkit-daemon12:19:250
179699450,3rtkit-daemon0-21swapper/108:41:271
179699450,18rtkit-daemon1795-21rtkit-daemon08:18:590
27537532440,5sleep1251rcuc/109:20:231
179699440,3rtkit-daemon1795-21rtkit-daemon12:30:131
179699440,3rtkit-daemon0-21swapper/010:37:301
179699440,1rtkit-daemon1795-21rtkit-daemon11:30:320
179699440,1rtkit-daemon1795-21rtkit-daemon10:22:460
179699440,1rtkit-daemon1795-21rtkit-daemon09:27:520
179699430,3rtkit-daemon1795-21rtkit-daemon09:01:290
179699430,3rtkit-daemon0-21swapper/111:13:221
179699430,3rtkit-daemon0-21swapper/007:40:441
179699430,1rtkit-daemon1795-21rtkit-daemon11:54:280
179699430,1rtkit-daemon1795-21rtkit-daemon10:05:030
179699430,1rtkit-daemon1795-21rtkit-daemon09:12:210
179699430,1rtkit-daemon1795-21rtkit-daemon09:12:200
179699420,4rtkit-daemon1795-21rtkit-daemon09:31:591
179699420,4rtkit-daemon1795-21rtkit-daemon09:03:081
179699420,3rtkit-daemon0-21swapper/110:45:051
179699420,1rtkit-daemon1795-21rtkit-daemon08:53:010
179699410,4rtkit-daemon1795-21rtkit-daemon12:19:331
179699410,4rtkit-daemon1795-21rtkit-daemon12:14:301
179699410,4rtkit-daemon1795-21rtkit-daemon09:25:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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