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2026-06-28 - 22:33
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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
Characteristics of the 20 highest latencies:
System rackdslot0.osadl.org (updated Sun Jun 28, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2781299258,16cyclictest11788-21grep08:35:012
27811992422,2cyclictest0-21swapper/110:39:581
27811992414,0cyclictest0-21swapper/111:04:101
2781099248,2cyclictest4099-21H222:10:210
2781299230,5cyclictest0-21swapper/211:57:452
27811992319,0cyclictest0-21swapper/110:34:181
27811992313,0cyclictest0-21swapper/111:09:521
2781199230,5cyclictest0-21swapper/109:38:171
27810992314,5cyclictest0-21swapper/009:01:140
27812992213,0cyclictest0-21swapper/211:33:432
27811992220,0cyclictest0-21swapper/109:43:451
27811992213,0cyclictest0-21swapper/109:02:221
27811992212,10cyclictest0-21swapper/108:10:181
27811992211,0cyclictest0-21swapper/108:31:361
27812992119,1cyclictest21989-21ntp_kernel_pll_08:50:172
27812992119,1cyclictest21989-21ntp_kernel_pll_08:50:162
27812992112,0cyclictest0-21swapper/208:18:582
27812992111,9cyclictest0-21swapper/209:06:382
2781299210,20cyclictest1274-21runrttasks10:50:272
2781199219,1cyclictest0-21swapper/111:30:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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