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2026-05-22 - 19:07
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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 Fri May 22, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1339972320279,27sleep10-21swapper/119:08:121
1340542316274,28sleep00-21swapper/019:08:500
2505652790,1chrt250563-21/usr/sbin/munin22:40:160
2809542650,4sleep1280951-21ssh23:20:221
179699490,3rtkit-daemon0-21swapper/022:55:450
179699470,3rtkit-daemon0-21swapper/022:46:200
2877922460,4sleep10-21swapper/123:30:151
179699460,3rtkit-daemon0-21swapper/019:14:470
179699440,5rtkit-daemon1795-21rtkit-daemon19:24:180
179699440,3rtkit-daemon0-21swapper/023:36:500
179699430,4rtkit-daemon0-21swapper/023:32:460
179699410,3rtkit-daemon0-21swapper/023:41:250
179699400,3rtkit-daemon0-21swapper/121:02:410
179699400,3rtkit-daemon0-21swapper/022:23:350
179699390,3rtkit-daemon0-21swapper/022:39:050
179699390,3rtkit-daemon0-21swapper/022:19:260
179699390,3rtkit-daemon0-21swapper/019:30:380
134283993917,12cyclictest331058-21rm00:29:060
179699370,3rtkit-daemon0-21swapper/100:36:580
134283993613,7cyclictest13-21ksoftirqd/023:10:000
179699350,3rtkit-daemon1795-21rtkit-daemon23:17:520
134283993520,5cyclictest305527-21rm23:54:370
134283993511,6cyclictest172770-21cron20:45:000
179699340,4rtkit-daemon1795-21rtkit-daemon20:04:201
179699340,4rtkit-daemon1795-21rtkit-daemon00:37:191
13428699347,17cyclictest141rcu_preempt20:20:021
179699330,4rtkit-daemon1795-21rtkit-daemon00:31:461
179699330,3rtkit-daemon0-21swapper/100:31:380
134283993318,3cyclictest151036-21head19:50:150
134283993311,9cyclictest13-21ksoftirqd/021:14:350
134283993310,4cyclictest187577-21ntp_offset21:15:230
134283993211,5cyclictest13-21ksoftirqd/020:35:010
2101592310,12sleep126-21ksoftirqd/121:45:221
13428699316,5cyclictest320497-21cat00:14:551
134283993128,2cyclictest66950irq/132-enp2s022:54:320
179699300,4rtkit-daemon182550-21diskmemload22:31:090
134286993025,3cyclictest220062-21turbostat21:59:591
13428699300,2cyclictest26-21ksoftirqd/122:05:161
13428399308,5cyclictest13-21ksoftirqd/020:35:020
13428399307,12cyclictest0-21swapper/000:13:310
13428399306,9cyclictest13-21ksoftirqd/020:45:210
13428399303,2cyclictest141rcu_preempt22:14:110
134283993027,2cyclictest66950irq/132-enp2s022:08:550
134283993022,6cyclictest141824-21sendmail_mailst19:25:230
134286992911,3cyclictest182550-21diskmemload21:21:161
134286992911,3cyclictest182550-21diskmemload21:21:161
13428399297,7cyclictest13-21ksoftirqd/000:00:120
13428399296,12cyclictest0-21swapper/023:01:020
179699280,3rtkit-daemon1795-21rtkit-daemon20:54:450
179699280,3rtkit-daemon0-21swapper/019:18:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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