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2025-12-29 - 07:16
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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 Mon Dec 29, 2025 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
263689911237,22cyclictest9503-21cut19:54:560
26368991123,44cyclictest7736-21netstat22:15:010
26368991123,44cyclictest7736-21netstat22:15:010
26368991103,22cyclictest24489-21/usr/sbin/munin00:34:460
263779910835,35cyclictest5826-21sh19:44:321
263779910835,35cyclictest5826-21sh19:44:321
26368991083,40cyclictest12718-21latency_hist23:19:370
25415210610,71sleep225447-21ntp_offset19:05:082
26368991052,93cyclictest27383-21modprobe20:49:550
26368991052,93cyclictest27383-21modprobe20:49:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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