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2026-05-21 - 22:23
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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 50 highest latencies:
System rack7slot1.osadl.org (updated Thu May 21, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26483211552,57sleep00-21swapper/007:07:220
173321140,1sleep114852-21stress09:53:201
26544211351,56sleep20-21swapper/207:08:082
26418211353,54sleep30-21swapper/307:06:333
2643129050,35sleep10-21swapper/107:06:431
254602860,1sleep214852-21stress10:47:272
26795994214,25cyclictest0-21swapper/209:20:482
26795994116,22cyclictest0-21swapper/212:12:202
26795994115,23cyclictest0-21swapper/209:52:492
26795994014,23cyclictest0-21swapper/209:10:182
2679399406,31cyclictest0-21swapper/010:08:500
26793994011,26cyclictest0-21swapper/010:34:420
26793994010,27cyclictest0-21swapper/012:23:560
2679599396,22cyclictest0-21swapper/211:45:292
26795993915,21cyclictest0-21swapper/210:56:592
26795993914,23cyclictest0-21swapper/211:27:042
26795993914,23cyclictest0-21swapper/211:27:042
26795993914,22cyclictest0-21swapper/212:05:242
26795993913,23cyclictest0-21swapper/210:01:412
26795993910,26cyclictest0-21swapper/212:25:282
26795993910,26cyclictest0-21swapper/212:25:282
26795993910,26cyclictest0-21swapper/210:54:462
2679399399,27cyclictest0-21swapper/011:53:020
2679399399,27cyclictest0-21swapper/011:53:020
26793993917,20cyclictest0-21swapper/011:55:420
26793993917,20cyclictest0-21swapper/011:55:410
26793993912,24cyclictest0-21swapper/009:18:530
72892384,13sleep30-21swapper/308:50:193
37592385,13sleep20-21swapper/208:42:202
294352385,13sleep20-21swapper/208:25:402
26795993817,18cyclictest0-21swapper/209:49:392
26795993816,19cyclictest0-21swapper/211:41:392
26795993816,19cyclictest0-21swapper/209:42:292
26795993816,19cyclictest0-21swapper/209:42:292
2679499389,26cyclictest0-21swapper/111:30:181
26794993814,22cyclictest0-21swapper/109:46:451
2679399387,20cyclictest0-21swapper/009:10:010
26793993810,25cyclictest0-21swapper/011:40:190
26793993810,25cyclictest0-21swapper/009:43:370
26793993810,25cyclictest0-21swapper/009:43:370
26793993810,21cyclictest0-21swapper/008:45:130
38942375,13sleep30-21swapper/308:44:023
36492375,13sleep30-21swapper/307:27:473
317402375,13sleep20-21swapper/208:32:062
2679499379,25cyclictest0-21swapper/110:55:311
26794993710,24cyclictest0-21swapper/110:05:081
2679399379,25cyclictest0-21swapper/011:21:330
2679399379,25cyclictest0-21swapper/011:21:330
2679399379,25cyclictest0-21swapper/010:51:360
2679399377,27cyclictest0-21swapper/012:25:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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