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2026-06-09 - 18:01
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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 50 highest latencies:
System rack0slot5.osadl.org (updated Tue Jun 09, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
397462199514512,1cyclictest3995478-21kworker/4:1+i915-unordered19:34:2710
39746219950223,478cyclictest0-21swapper/421:48:2610
39746409950125,475cyclictest0-21swapper/900:01:2615
397462199496494,1cyclictest4042490-21kworker/4:0+i915-unordered21:13:2710
397462199489488,1cyclictest3987446-21kworker/4:0+i915-unordered19:30:2710
397461099487485,2cyclictest4023664-21kworker/1:4+i915-unordered21:36:261
397461099487485,2cyclictest4023664-21kworker/1:4+i915-unordered21:36:261
39746219948033,446cyclictest0-21swapper/400:01:2610
39746219947917,461cyclictest0-21swapper/420:38:2710
3974633994783,49cyclictest0-21swapper/719:37:5013
397461099477476,1cyclictest4043956-21kworker/1:2+i915-unordered21:01:271
39746339947224,30cyclictest0-21swapper/723:55:4913
3974621994728,461cyclictest0-21swapper/421:01:2710
397465999470470,0cyclictest0-21swapper/1321:56:265
3974648994701,467cyclictest0-21swapper/1122:05:263
397466499468468,0cyclictest0-21swapper/1421:49:266
39746339946822,30cyclictest0-21swapper/723:27:2113
3974621994685,460cyclictest0-21swapper/420:21:2710
39746339946721,29cyclictest0-21swapper/723:46:0913
39746339946720,30cyclictest0-21swapper/720:02:1113
39746259946722,29cyclictest0-21swapper/520:01:2711
39746339946620,28cyclictest0-21swapper/722:09:1313
39746339946619,30cyclictest0-21swapper/720:56:4813
39746339946518,28cyclictest0-21swapper/721:02:1013
39746679946418,445cyclictest0-21swapper/1522:43:267
39746339946318,30cyclictest0-21swapper/700:02:1013
39746299946220,29cyclictest0-21swapper/623:44:2612
39746059946215,29cyclictest0-21swapper/023:31:110
397461099461458,2cyclictest4043956-21kworker/1:2+events20:44:121
397466799460460,0cyclictest39186-21kworker/15:2+i915-unordered00:30:267
397466799460460,0cyclictest39186-21kworker/15:2+i915-unordered00:30:267
39746149946019,30cyclictest0-21swapper/222:58:268
397461099458457,1cyclictest4023664-21kworker/1:4+events22:02:481
397461099458456,1cyclictest4023664-21kworker/1:4+events21:25:481
397461099458455,2cyclictest18808-21kworker/1:5+events00:21:481
397461099458455,2cyclictest18808-21kworker/1:5+events00:21:481
39746299945715,28cyclictest0-21swapper/623:54:2612
39746299945710,30cyclictest0-21swapper/620:38:1012
397461499456455,1cyclictest0-21swapper/219:38:278
39746059945613,29cyclictest0-21swapper/022:23:110
397465699455455,0cyclictest69750irq/159-i91521:56:264
39746489945510,30cyclictest0-21swapper/1119:53:273
3974633994557,29cyclictest0-21swapper/723:51:5013
397461099455452,2cyclictest3974267-21kworker/1:2+events19:22:481
397466799451450,1cyclictest0-21swapper/1520:21:277
3974643994500,450cyclictest0-21swapper/1020:37:202
3974621994500,447cyclictest0-21swapper/423:30:4910
397465699449449,0cyclictest69750irq/159-i91500:30:264
397465699449449,0cyclictest69750irq/159-i91500:30:264
3974633994490,28cyclictest0-21swapper/722:30:1013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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