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2024-11-05 - 16:40
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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 rack0slot5.osadl.org (updated Tue Nov 05, 2024 00:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246618299773772,1cyclictest0-21swapper/120:52:081
246622199525525,0cyclictest2384143-21kworker/12:0+i915-unordered23:11:464
24661989952052,467cyclictest0-21swapper/621:40:3312
246618299520478,42cyclictest0-21swapper/123:31:461
24662119951877,440cyclictest0-21swapper/921:51:0815
246619299514513,1cyclictest2649240-21kworker/4:0+events00:16:3310
246618999512512,0cyclictest0-21swapper/300:43:469
246618999509509,0cyclictest0-21swapper/323:22:089
24661989950734,472cyclictest0-21swapper/600:55:1012
24661989950676,421cyclictest2498203-21kworker/6:1+i915-unordered21:03:0912
246622599505505,0cyclictest0-21swapper/1322:01:305
246622599504503,1cyclictest2553210-21kworker/13:2+i915-unordered23:15:465
24662119950450,454cyclictest0-21swapper/920:36:3215
24661989950241,460cyclictest78-21ksoftirqd/600:46:3112
246622199500500,0cyclictest0-21swapper/1201:13:464
24661989949949,0cyclictest0-21swapper/623:48:0912
24662119949822,475cyclictest0-21swapper/921:42:0915
24662319949757,440cyclictest0-21swapper/1501:23:107
246623199497467,30cyclictest0-21swapper/1501:33:107
24661989949546,449cyclictest0-21swapper/600:44:3212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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