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2025-11-05 - 12:10
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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
Characteristics of the 20 highest latencies:
System rack6slot6 (updated Wed Nov 05, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8239910727153431,53744cyclictest31771-21ssh21:41:240
8239910690253476,53326cyclictest8554-21diskmemload22:33:490
8239910670253392,53215cyclictest2103-21runrttasks23:35:160
8239910661653477,53139cyclictest0-21swapper19:20:530
8239910655653468,53088cyclictest0-21swapper20:09:570
8239910655453422,53041cyclictest0-21swapper23:24:230
8239910654953416,53066cyclictest0-21swapper23:28:450
8239910654853401,53052cyclictest13603-21ssh22:00:590
8239910653153421,53046cyclictest9-21ksoftirqd/021:28:100
8239910647953456,53023cyclictest0-21swapper20:16:190
8239910647453449,52904cyclictest29717-21ssh23:54:420
8239910647053455,53015cyclictest0-21swapper22:48:430
8239910645753406,53051cyclictest0-21swapper22:06:510
8239910645653456,52911cyclictest3950irq/9-acpi23:34:060
8239910645153445,53006cyclictest0-21swapper00:06:560
8239910644853441,53007cyclictest0-21swapper23:41:380
8239910643953444,52995cyclictest0-21swapper19:53:330
8239910643853396,53042cyclictest0-21swapper00:17:490
8239910642153434,52987cyclictest0-21swapper22:13:230
8239910641853426,52992cyclictest0-21swapper23:05:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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