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2026-06-13 - 19:52
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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 20 highest latencies:
System rackeslot2.osadl.org (updated Sat Jun 13, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
51140721650,2sleep30-21swapper/309:50:213
73820521480,2sleep30-21swapper/312:22:233
7311942540,1sleep1731193-21ssh12:19:201
302501992517,7cyclictest347451-21apt-config07:45:001
302501992513,10cyclictest1-21systemd09:00:021
492398240,6rtkit-daemon1237-21mta-sts-daemon12:16:020
492398240,3rtkit-daemon675-21mta-sts-daemon09:39:280
30250199246,9cyclictest0-21swapper/110:20:191
302501992417,6cyclictest408627-21munin-plugin-st08:35:011
302501992415,8cyclictest1-21systemd09:25:021
302501992415,8cyclictest1-21systemd09:25:021
302501992316,6cyclictest70-21kcompactd009:40:011
302501992313,5cyclictest1050-21snmpd11:35:071
302502992219,1cyclictest0-21swapper/212:40:002
302501992219,2cyclictest384539-21sh08:15:021
302501992214,7cyclictest704550-21kthreadcore12:00:251
302501992214,7cyclictest516228-21grep09:50:311
302501992214,7cyclictest0-21swapper/109:30:001
302500992219,2cyclictest432917-21apt-get08:55:030
302502992119,1cyclictest0-21swapper/212:05:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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