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2026-04-30 - 10:57
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack3slot6.osadl.org (updated Thu Apr 30, 2026 00:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1088821140,4sleep1251rcuc/119:15:491
7121998668,12cyclictest14-21ksoftirqd/019:20:120
656528119,52sleep00-21swapper/019:05:590
72652780,5sleep10-21swapper/119:10:151
7121997858,10cyclictest14-21ksoftirqd/021:00:130
7121997853,14cyclictest0-21swapper/023:20:140
7121997756,10cyclictest14-21ksoftirqd/021:35:130
62192778,54sleep15378-21/usr/sbin/munin19:05:281
7127997647,9cyclictest503-21snmpd23:51:131
7127997418,13cyclictest251rcuc/122:00:231
7121997355,8cyclictest14-21ksoftirqd/020:05:120
7121997355,8cyclictest14-21ksoftirqd/020:05:120
7121997245,17cyclictest0-21swapper/020:30:120
7121997115,50cyclictest0-21swapper/021:15:100
7127997041,16cyclictest503-21snmpd22:41:251
7127997024,12cyclictest26-21ksoftirqd/122:15:101
7121997024,22cyclictest26148-21runrttasks20:00:110
7121997014,16cyclictest0-21swapper/022:50:110
712199697,20cyclictest11314-21apt-get20:50:130
7127996745,9cyclictest26-21ksoftirqd/100:18:481
7121996743,20cyclictest14-21ksoftirqd/019:32:050
7127996631,14cyclictest26-21ksoftirqd/100:00:041
7127996626,16cyclictest26-21ksoftirqd/122:25:011
7121996540,14cyclictest14-21ksoftirqd/020:45:140
7121996540,14cyclictest14-21ksoftirqd/020:45:140
7121996524,35cyclictest6813-21aten2.4-expect00:30:160
7127996447,10cyclictest30748-21telnet21:45:171
7127996441,9cyclictest503-21snmpd00:06:161
7127996427,16cyclictest26-21ksoftirqd/122:40:011
7121996443,11cyclictest0-21swapper/021:40:110
7121996443,11cyclictest0-21swapper/021:40:110
7127996331,11cyclictest26-21ksoftirqd/120:05:191
7127996331,11cyclictest26-21ksoftirqd/120:05:191
7121996341,11cyclictest14-21ksoftirqd/021:20:110
7121996341,11cyclictest14-21ksoftirqd/021:20:110
7127996223,13cyclictest26-21ksoftirqd/120:35:011
7127996219,27cyclictest26-21ksoftirqd/121:55:011
7121996221,36cyclictest7116-21cyclictest20:20:130
7127996138,17cyclictest26-21ksoftirqd/119:40:201
7127996137,9cyclictest26-21ksoftirqd/122:10:291
7127996129,14cyclictest26-21ksoftirqd/100:30:011
7127996125,16cyclictest26-21ksoftirqd/123:40:001
7127996124,14cyclictest26-21ksoftirqd/123:35:001
7127996123,15cyclictest26-21ksoftirqd/121:15:001
7127996123,14cyclictest26-21ksoftirqd/100:40:001
7127996118,38cyclictest26-21ksoftirqd/123:26:521
7127996115,41cyclictest0-21swapper/100:30:281
7121996124,32cyclictest243-21systemd-journal23:26:340
7127996041,13cyclictest29596-21ntpq21:40:281
7127996041,13cyclictest29596-21ntpq21:40:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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