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2026-09-14 - 01:30
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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 Sep 13, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119319911496,11cyclictest4524-21sshd11:24:412
119319910943,60cyclictest0-21swapper/210:39:552
119099910841,22cyclictest29250-21ps12:04:500
119099910733,34cyclictest1260-21latency_hist08:14:210
119099910636,30cyclictest15011-21cut09:54:410
11931991053,38cyclictest4413-21latency_hist08:24:212
119319910343,12cyclictest0-21swapper/210:04:202
1079821036,66sleep20-21swapper/207:04:502
1079821036,66sleep20-21swapper/207:04:502
119099910152,30cyclictest19625-21apt-get11:50:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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