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2026-08-09 - 00:52
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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 100 highest latencies:
System rack7slot1.osadl.org (updated Sat Aug 08, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3078211957,56sleep30-21swapper/307:08:183
2881211956,58sleep10-21swapper/107:06:081
2857211653,58sleep00-21swapper/007:05:500
3181211351,20sleep20-21swapper/207:09:262
266472630,1sleep124836-21stress09:10:461
196222510,1sleep124836-21stress11:25:001
3344994415,20cyclictest0-21swapper/112:36:391
334499438,25cyclictest0-21swapper/112:30:211
3344994210,22cyclictest0-21swapper/109:57:511
3345994110,28cyclictest0-21swapper/210:05:182
334499419,20cyclictest0-21swapper/109:20:241
3344994123,16cyclictest0-21swapper/111:00:241
3344994123,16cyclictest0-21swapper/111:00:241
334399409,25cyclictest0-21swapper/008:14:140
3343994014,12cyclictest0-21swapper/012:04:380
3343994014,12cyclictest0-21swapper/012:04:380
3345993914,22cyclictest0-21swapper/210:24:202
334499393,27cyclictest0-21swapper/111:06:381
3344993920,16cyclictest0-21swapper/111:26:431
3344993920,16cyclictest0-21swapper/111:26:431
82382385,13sleep20-21swapper/207:16:482
3345993818,18cyclictest0-21swapper/210:45:212
3345993817,18cyclictest0-21swapper/212:21:432
334499389,20cyclictest0-21swapper/111:15:211
334499386,22cyclictest0-21swapper/109:52:041
3344993821,15cyclictest0-21swapper/111:10:131
3344993820,16cyclictest0-21swapper/112:06:551
3344993820,16cyclictest0-21swapper/112:06:551
3344993819,16cyclictest0-21swapper/110:55:261
3344993819,16cyclictest0-21swapper/110:55:261
3343993815,20cyclictest0-21swapper/012:05:130
3343993815,20cyclictest0-21swapper/012:05:130
3343993811,10cyclictest0-21swapper/012:10:150
3343993810,22cyclictest0-21swapper/007:51:110
259162385,15sleep20-21swapper/211:36:132
46702375,12sleep20-21swapper/208:22:162
3345993714,20cyclictest0-21swapper/211:31:392
3345993714,20cyclictest0-21swapper/209:55:212
3345993710,24cyclictest0-21swapper/212:35:352
334499378,20cyclictest0-21swapper/110:15:211
334499378,20cyclictest0-21swapper/110:15:211
3344993720,15cyclictest0-21swapper/110:46:121
3344993719,16cyclictest0-21swapper/112:13:241
3343993710,21cyclictest0-21swapper/007:42:130
283072375,13sleep20-21swapper/208:04:522
259432378,10sleep30-21swapper/307:57:353
150472374,13sleep30-21swapper/307:34:173
127282378,10sleep30-21swapper/307:28:003
115012375,13sleep20-21swapper/208:39:532
90582365,13sleep00-21swapper/008:31:360
83302365,13sleep00-21swapper/007:17:460
69532364,13sleep30-21swapper/308:27:473
334599369,24cyclictest0-21swapper/209:45:302
3345993611,23cyclictest0-21swapper/208:50:222
3345993611,22cyclictest0-21swapper/209:35:022
3345993610,24cyclictest0-21swapper/208:30:232
3345993610,23cyclictest0-21swapper/211:25:162
3345993610,23cyclictest0-21swapper/211:25:162
3344993619,15cyclictest0-21swapper/112:20:161
3344993619,15cyclictest0-21swapper/110:15:021
3344993619,15cyclictest0-21swapper/109:40:281
3344993619,15cyclictest0-21swapper/109:40:271
3344993619,14cyclictest0-21swapper/111:35:171
3344993619,14cyclictest0-21swapper/109:28:111
3344993618,16cyclictest0-21swapper/109:35:231
334399369,21cyclictest0-21swapper/008:50:500
334399369,21cyclictest0-21swapper/008:05:040
334399368,23cyclictest0-21swapper/008:00:120
334399368,23cyclictest0-21swapper/007:32:420
334399368,22cyclictest0-21swapper/009:00:110
334399366,27cyclictest0-21swapper/011:09:440
3343993614,19cyclictest0-21swapper/012:25:260
3343993611,12cyclictest0-21swapper/010:10:260
3343993610,21cyclictest0-21swapper/009:05:500
3343993610,21cyclictest0-21swapper/009:05:500
3343993610,20cyclictest0-21swapper/008:20:280
326222365,12sleep30-21swapper/308:12:473
302632365,12sleep30-21swapper/308:06:293
136412365,12sleep20-21swapper/208:44:142
114852364,13sleep30-21swapper/308:39:423
35612354,13sleep20-21swapper/207:10:062
3345993514,19cyclictest0-21swapper/209:25:242
3345993510,23cyclictest0-21swapper/211:05:262
3344993521,12cyclictest0-21swapper/110:35:301
3344993518,15cyclictest0-21swapper/112:00:151
3344993518,15cyclictest0-21swapper/112:00:151
3344993517,15cyclictest0-21swapper/111:30:151
334399358,21cyclictest0-21swapper/007:20:510
334399356,20cyclictest0-21swapper/009:12:320
334399356,13cyclictest0-21swapper/011:51:530
3343993513,19cyclictest0-21swapper/010:04:560
3343993512,20cyclictest0-21swapper/009:45:310
3343993510,19cyclictest0-21swapper/009:32:140
237472354,13sleep20-21swapper/207:52:572
228152354,12sleep30-21swapper/309:05:123
228152354,12sleep30-21swapper/309:05:123
201712355,10sleep20-21swapper/208:58:052
192792354,12sleep20-21swapper/207:41:542
136952354,13sleep00-21swapper/008:44:520
113572355,12sleep00-21swapper/008:38:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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