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2024-05-08 - 21:09
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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 20 highest latencies:
System rackaslot8.osadl.org (updated Wed May 08, 2024 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265162308275,20sleep20-21swapper/207:07:142
267242283220,49sleep30-21swapper/307:09:413
264072260227,21sleep00-21swapper/007:05:480
264032254220,22sleep10-21swapper/107:05:441
204782610,0sleep20-21swapper/211:34:232
160762610,4sleep122-21ksoftirqd/112:24:311
249712600,0sleep00-21swapper/010:43:440
15622580,0sleep00-21swapper/007:25:130
315632570,0sleep00-21swapper/012:10:130
271392560,0sleep20-21swapper/211:12:492
293882550,0sleep10-21swapper/110:20:181
7482170,0sleep30-21swapper/310:50:193
302142170,0sleep20-21swapper/212:33:572
212122170,0sleep00-21swapper/010:13:400
58472160,0sleep30-21swapper/310:00:223
132332150,1sleep013234-21find07:50:250
272702130,0sleep00-21swapper/012:31:270
26854991210,2cyclictest12-21ksoftirqd/010:00:010
115332120,0sleep30-21swapper/309:00:193
2685499118,2cyclictest12-21ksoftirqd/011:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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