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2026-07-27 - 02:01
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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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackbslot7.osadl.org (updated Sun Jul 26, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12460991232,42cyclictest16572-21ssh11:31:260
124609912112,25cyclictest26441-21rm10:53:170
12460991194,26cyclictest16817-21/usr/sbin/munin10:37:480
12460991183,23cyclictest6542-21sh09:26:530
12314211612,68sleep112318-21cron06:56:131
12314211612,68sleep112318-21cron06:56:131
12460991123,14cyclictest0-21swapper/006:56:170
12460991123,14cyclictest0-21swapper/006:56:170
1219821106,15sleep20-21swapper/206:54:432
1219821106,15sleep20-21swapper/206:54:432
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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