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2025-10-22 - 12:28
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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 rack0slot7.osadl.org (updated Wed Oct 22, 2025 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2230973994220,421cyclictest0-21swapper/423:21:3610
223099999400400,0cyclictest0-21swapper/1223:15:404
223099999398396,1cyclictest3067763-21kworker/u64:1+events_unbound23:21:364
223097599293290,3cyclictest0-21swapper/523:24:5811
2230960992920,1cyclictest0-21swapper/022:51:480
223098599289282,6cyclictest108443-21Renderer22:56:0314
223096099289281,7cyclictest108443-21Renderer23:16:300
223099299288282,3cyclictest59602-21Xorg19:12:092
223099999287282,4cyclictest108443-21Renderer23:03:094
223099499287282,5cyclictest108443-21Renderer23:09:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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