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2026-03-12 - 03:01
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Wed Mar 11, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9766402258179,29sleep00-21swapper/007:07:580
9750652241199,28sleep10-21swapper/107:05:031
10304542540,4sleep00-21swapper/009:15:160
10234492540,4sleep00-21swapper/009:00:230
179699530,4rtkit-daemon1795-21rtkit-daemon10:29:501
10735712510,5sleep10-21swapper/110:14:211
179699500,4rtkit-daemon1795-21rtkit-daemon08:56:091
9842472490,4sleep10-21swapper/107:25:171
11175322490,4sleep1251rcuc/111:13:041
11126372480,3sleep11112641-21unixbench_multi11:05:271
179699370,4rtkit-daemon1795-21rtkit-daemon12:26:401
179699360,4rtkit-daemon1795-21rtkit-daemon09:16:381
179699350,26rtkit-daemon10179472chrt08:45:301
976956993412,10cyclictest1048480-21ssh09:39:450
976956993411,8cyclictest13-21ksoftirqd/009:30:210
179699340,4rtkit-daemon1795-21rtkit-daemon11:02:531
179699340,4rtkit-daemon1795-21rtkit-daemon09:09:550
97696099331,13cyclictest1024457-21apt-get09:05:151
97696099331,11cyclictest1089050-21sh10:35:001
976956993330,2cyclictest66950irq/132-enp2s012:16:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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