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2025-06-19 - 08:35
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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 Thu Jun 19, 2025 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17757521360,128pltrace0-21swapper/619:05:216
17757521280,114pltrace0-21swapper/719:05:227
17757521270,122pltrace0-21swapper/319:05:183
17757521190,115pltrace0-21swapper/519:05:235
20544521100,106pltrace0-21swapper/219:08:382
17757521020,94pltrace0-21swapper/119:06:201
2057525844,10sleep00-21swapper/019:07:050
2055225844,10sleep40-21swapper/419:06:464
2967052310,2pltrace0-21swapper/700:15:177
3136352290,1pltrace0-21swapper/523:16:425
407752270,0pltrace0-21swapper/720:31:447
2100999250,4cyclictest0-21swapper/523:03:475
2100999250,4cyclictest0-21swapper/523:03:475
2101699231,15cyclictest0-21swapper/720:14:207
2100999230,15cyclictest0-21swapper/519:42:175
2100599220,21cyclictest0-21swapper/421:20:204
1074452200,0pltrace0-21swapper/721:41:517
64942190,0sleep50-21swapper/520:35:235
21009991916,2cyclictest1132-21snmpd22:58:075
21009991916,2cyclictest1132-21snmpd22:58:075
20988991916,2cyclictest1132-21snmpd23:42:450
2811252180,5pltrace0-21swapper/220:20:012
1414352180,0pltrace0-21swapper/719:52:187
1414352180,0pltrace0-21swapper/719:52:187
2101699170,15cyclictest0-21swapper/720:24:477
21013991711,5cyclictest0-21swapper/600:34:586
21013991711,3cyclictest0-21swapper/619:33:586
2101399170,14cyclictest26107-21missed_timers19:15:196
21009991711,5cyclictest0-21swapper/500:13:285
21005991711,5cyclictest0-21swapper/421:58:304
2100599171,15cyclictest0-21swapper/422:39:344
2099799171,15cyclictest0-21swapper/221:27:562
2099799170,16cyclictest1105-21processes23:20:262
20993991712,3cyclictest0-21swapper/120:51:131
2099399170,2cyclictest0-21swapper/121:45:231
2857852160,11pltrace54-21ksoftirqd/423:14:234
2857852160,11pltrace0-21swapper/023:14:320
2101699161,14cyclictest0-21swapper/723:36:067
21013991612,2cyclictest0-21swapper/623:34:066
21013991611,3cyclictest0-21swapper/622:25:036
2100999161,7cyclictest0-21swapper/523:21:315
2100999160,4cyclictest0-21swapper/500:26:495
21005991611,3cyclictest0-21swapper/422:07:304
2100599161,8cyclictest0-21swapper/423:27:324
2100599160,5cyclictest0-21swapper/423:53:414
2100599160,15cyclictest0-21swapper/421:06:154
21002991610,5cyclictest0-21swapper/321:07:073
21002991610,3cyclictest0-21swapper/300:23:393
20997991611,3cyclictest0-21swapper/222:07:322
2099799161,4cyclictest0-21swapper/223:25:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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