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2025-11-26 - 18:20
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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 100 highest latencies:
System rack0slot5.osadl.org (updated Wed Nov 26, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178798899698302,393cyclictest0-21swapper/623:54:0312
1787969995183,514cyclictest0-21swapper/122:54:031
178799999467466,1cyclictest1988626-21kworker/9:3+i915-unordered22:54:0315
17880029946417,28cyclictest0-21swapper/1022:35:242
1788007994558,28cyclictest1917790-21needreboot21:30:033
17880029944926,30cyclictest0-21swapper/1022:55:032
178797299447446,1cyclictest0-21swapper/220:25:038
17880029944526,418cyclictest0-21swapper/1023:32:022
17879699944522,420cyclictest0-21swapper/121:37:261
17879699944423,420cyclictest0-21swapper/122:44:251
17880029944324,418cyclictest0-21swapper/1021:21:262
17880029944323,419cyclictest0-21swapper/1021:31:272
17880029944224,418cyclictest0-21swapper/1020:26:272
17880029944223,419cyclictest0-21swapper/1022:47:252
17879699944222,419cyclictest0-21swapper/121:28:031
17880079944019,421cyclictest0-21swapper/1100:30:023
17880029944022,416cyclictest0-21swapper/1020:15:032
17879889943922,29cyclictest0-21swapper/623:25:2512
17879819943818,419cyclictest0-21swapper/420:49:0210
17879819943716,418cyclictest0-21swapper/420:50:0210
17880029943615,417cyclictest0-21swapper/1022:43:022
17879819943516,417cyclictest0-21swapper/422:05:2710
17879819943515,418cyclictest0-21swapper/400:32:2510
17879819943515,417cyclictest0-21swapper/422:17:0210
17879819943514,418cyclictest0-21swapper/423:29:2510
17880079943413,421cyclictest0-21swapper/1120:42:253
17880029943416,416cyclictest0-21swapper/1021:49:252
17880029943416,416cyclictest0-21swapper/1021:49:252
17879819943416,416cyclictest0-21swapper/422:36:0210
17879819943415,419cyclictest0-21swapper/421:59:0110
17879819943413,421cyclictest0-21swapper/400:10:2610
17879819943315,0cyclictest0-21swapper/400:22:0110
17879819943314,417cyclictest0-21swapper/423:02:2710
17879819943313,418cyclictest0-21swapper/420:19:2610
178797799433432,1cyclictest0-21swapper/322:12:039
178797299430430,0cyclictest0-21swapper/221:57:178
1787969994296,419cyclictest0-21swapper/123:20:021
1788007994278,419cyclictest0-21swapper/1122:15:023
1788007994265,420cyclictest0-21swapper/1120:58:023
1788002994260,29cyclictest0-21swapper/1020:40:022
1787981994265,419cyclictest0-21swapper/422:55:2710
178799199425422,3cyclictest0-21swapper/722:54:0313
1788007994245,418cyclictest0-21swapper/1121:36:033
1787969994246,417cyclictest0-21swapper/123:30:011
17880029942324,398cyclictest0-21swapper/1020:08:012
178799699423419,3cyclictest1992650-21kworker/8:0+pm22:59:1514
1787969994231,421cyclictest0-21swapper/121:05:251
17880029942226,396cyclictest0-21swapper/1019:34:022
17880029942223,398cyclictest0-21swapper/1023:48:022
17880029942223,398cyclictest0-21swapper/1000:12:242
17879819942222,399cyclictest0-21swapper/423:44:2710
1787969994221,421cyclictest0-21swapper/122:26:021
1787969994221,420cyclictest0-21swapper/121:45:251
1787969994221,420cyclictest0-21swapper/121:45:251
17880029942125,394cyclictest0-21swapper/1023:59:012
17880029942124,396cyclictest0-21swapper/1020:13:032
17879699942125,396cyclictest0-21swapper/100:26:251
178801499420419,1cyclictest1951472-21kworker/12:2+i915-unordered22:10:034
1788007994200,418cyclictest0-21swapper/1122:58:023
17880029942025,395cyclictest0-21swapper/1022:21:262
17880029942024,396cyclictest0-21swapper/1019:41:032
17880029942022,397cyclictest0-21swapper/1021:10:262
1787991994200,420cyclictest0-21swapper/723:17:2613
17880079941922,397cyclictest0-21swapper/1119:35:013
17880029941923,396cyclictest0-21swapper/1019:38:022
17880029941923,395cyclictest0-21swapper/1022:53:262
1787969994190,419cyclictest0-21swapper/122:04:031
1788002994180,416cyclictest0-21swapper/1023:50:022
1788002994180,416cyclictest0-21swapper/1021:54:252
1788002994180,416cyclictest0-21swapper/1021:54:252
178799199417415,2cyclictest2044705-21kworker/7:2+events00:00:0213
178796799417416,1cyclictest0-21swapper/022:59:150
17880029941618,396cyclictest0-21swapper/1021:26:022
178799699415415,0cyclictest0-21swapper/820:03:2714
17879819941518,395cyclictest0-21swapper/420:55:0310
178796799415413,2cyclictest1814581-21kworker/0:1+events20:03:270
17880079941416,395cyclictest0-21swapper/1120:30:023
178799999414413,1cyclictest0-21swapper/922:00:0215
178799699414413,1cyclictest1905813-21kworker/8:0+events21:17:2514
178799199414413,1cyclictest0-21swapper/721:01:0213
17879819941415,396cyclictest0-21swapper/422:04:2510
17879819941414,397cyclictest0-21swapper/423:32:2510
178801499413411,2cyclictest1984242-21kworker/12:0+events22:50:264
17880029941317,394cyclictest0-21swapper/1023:27:022
17879819941315,395cyclictest0-21swapper/422:21:0210
17879819941314,397cyclictest0-21swapper/421:43:2410
17879819941314,397cyclictest0-21swapper/421:43:2410
17879819941314,397cyclictest0-21swapper/419:41:2610
17880079941212,397cyclictest0-21swapper/1123:05:023
178799199412411,1cyclictest0-21swapper/722:19:2513
178799199412410,2cyclictest0-21swapper/722:29:0213
178799199412410,2cyclictest0-21swapper/720:47:2513
17879819941216,394cyclictest0-21swapper/423:52:0210
17879819941212,398cyclictest0-21swapper/422:48:2710
1788007994118,399cyclictest0-21swapper/1120:52:253
17880079941113,398cyclictest0-21swapper/1122:07:253
178799199411409,2cyclictest1971094-21kworker/7:1+events22:42:2513
17879819941115,394cyclictest0-21swapper/419:52:2610
17879819941114,395cyclictest0-21swapper/419:21:2610
17879819941113,396cyclictest0-21swapper/420:32:0310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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