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2024-09-20 - 09:01
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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 rack4slot6.osadl.org (updated Fri Sep 20, 2024 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14772210164,10sleep60-21swapper/619:09:446
1195452900,82pltrace0-21swapper/219:08:132
1849052890,2pltrace0-21swapper/200:04:252
1451627460,10sleep30-21swapper/319:06:293
1478027359,10sleep50-21swapper/519:09:515
1445627359,10sleep10-21swapper/119:05:381
1454926046,10sleep00-21swapper/019:06:580
1452025945,10sleep70-21swapper/719:06:337
1457525844,10sleep40-21swapper/419:07:184
390852300,1pltrace0-21swapper/720:45:377
3130952300,0pltrace0-21swapper/723:30:157
2628352230,7pltrace0-21swapper/721:26:357
2628352230,7pltrace0-21swapper/721:26:357
1500699230,22cyclictest0-21swapper/423:38:474
1500699230,16cyclictest0-21swapper/421:29:034
1500699230,16cyclictest0-21swapper/421:29:034
1499299210,15cyclictest0-21swapper/122:00:201
2461552200,0pltrace0-21swapper/722:20:207
616852190,4pltrace0-21swapper/722:45:137
2852352190,0pltrace0-21swapper/723:28:507
2572952190,13pltrace0-21swapper/223:20:232
1501799190,2cyclictest0-21swapper/720:30:207
616852180,3pltrace0-21swapper/722:44:387
3243852180,5pltrace0-21swapper/700:33:067
3243852180,5pltrace0-21swapper/700:33:067
3072352180,7pltrace0-21swapper/620:37:576
2572952180,10pltrace26483-21grep23:20:136
1760752180,13pltrace0-21swapper/119:17:401
1510352180,4pltrace0-21swapper/721:04:367
15017991812,5cyclictest0-21swapper/719:34:587
1499299180,14cyclictest0-21swapper/123:44:191
14989991812,5cyclictest0-21swapper/021:53:380
895852170,0pltrace0-21swapper/722:53:537
3186752170,0pltrace0-21swapper/721:38:127
2907252170,6pltrace0-21swapper/721:30:027
2907252170,6pltrace0-21swapper/721:30:027
2572952170,11pltrace54-21ksoftirqd/423:20:004
2572952170,11pltrace27342-21latency23:20:185
2235352170,0pltrace0-21swapper/720:20:327
2123952170,2pltrace23582-21unixbench-2d19:20:216
1956452170,5pltrace0-21swapper/720:16:057
1501799171,5cyclictest0-21swapper/723:18:597
15010991714,2cyclictest0-21swapper/521:34:565
15010991714,2cyclictest0-21swapper/521:34:565
15006991712,3cyclictest0-21swapper/421:48:504
15001991711,5cyclictest0-21swapper/300:34:373
15001991711,5cyclictest0-21swapper/300:34:373
15001991711,5cyclictest0-21swapper/300:07:003
14992991712,3cyclictest0-21swapper/122:14:421
1174752170,11pltrace54-21ksoftirqd/422:57:434
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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