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2026-04-09 - 08:19
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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 Apr 09, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12726521280,122pltrace0-21swapper/119:10:001
12726521220,113pltrace0-21swapper/219:08:212
9941521140,110pltrace0-21swapper/719:07:587
12726521040,92pltrace0-21swapper/519:09:495
994152970,91pltrace0-21swapper/319:07:223
1272652780,54pltrace0-21swapper/619:08:106
1270026340,18sleep40-21swapper/419:07:584
1286226241,17sleep00-21swapper/019:09:530
2740152340,1pltrace27405-21pltrace-run00:23:047
1578852330,2pltrace16291-21latency_hist21:10:007
1921252260,1pltrace0-21swapper/719:20:157
1750352240,0pltrace0-21swapper/720:15:157
1304199220,1cyclictest0-21swapper/600:00:206
335952210,0pltrace0-21swapper/700:39:457
13041992113,5cyclictest0-21swapper/619:39:236
13041992113,5cyclictest0-21swapper/619:39:236
2028752200,2pltrace0-21swapper/720:22:527
1304199200,15cyclictest0-21swapper/622:20:586
1304199190,7cyclictest0-21swapper/622:17:096
1304199190,7cyclictest0-21swapper/600:36:156
1304199190,14cyclictest0-21swapper/600:05:466
2740152180,0pltrace0-21swapper/700:25:447
1304199180,7cyclictest0-21swapper/622:06:086
1304199180,17cyclictest0-21swapper/621:27:536
1304199180,16cyclictest0-21swapper/619:50:056
1303099180,17cyclictest0-21swapper/320:25:193
1234752180,6pltrace13627-21fschecks_time23:00:167
1234752180,11pltrace14227-21sed23:00:195
2757452170,0pltrace0-21swapper/719:34:057
1750352170,0pltrace0-21swapper/720:14:527
1578852170,3pltrace0-21swapper/721:10:007
13041991711,3cyclictest0-21swapper/619:58:566
13030991713,3cyclictest1146-21snmpd22:23:283
1303099171,15cyclictest0-21swapper/300:17:013
1303099170,4cyclictest0-21swapper/321:18:203
13022991711,5cyclictest0-21swapper/123:11:291
1302299171,15cyclictest0-21swapper/100:21:131
3081352160,0pltrace0-21swapper/722:33:057
291452160,4pltrace3886-21cstates21:45:131
291452160,12pltrace0-21swapper/721:45:157
13047991610,5cyclictest0-21swapper/722:18:017
13047991610,5cyclictest0-21swapper/721:33:497
1304799161,4cyclictest0-21swapper/700:13:267
1304799160,2cyclictest8020-21fschecks_time22:50:127
13041991612,3cyclictest0-21swapper/600:20:196
1304199161,14cyclictest0-21swapper/619:19:136
1304199160,15cyclictest0-21swapper/620:45:286
13038991611,3cyclictest0-21swapper/521:35:225
13038991611,3cyclictest0-21swapper/521:03:405
13038991611,3cyclictest0-21swapper/520:49:165
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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