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2025-09-17 - 02:17
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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 rack0slot8.osadl.org (updated Tue Sep 16, 2025 12:45:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1950769995451,543cyclictest2056731-21meminfo09:00:2114
1950767994666,459cyclictest0-21swapper/707:19:5413
19507759946534,28cyclictest0-21swapper/1408:26:466
1950776994420,20cyclictest0-21swapper/1507:10:457
1950775994409,430cyclictest0-21swapper/1408:35:376
1950775994396,432cyclictest0-21swapper/1407:24:286
1950775994377,27cyclictest0-21swapper/1407:35:546
1950775994376,28cyclictest0-21swapper/1408:22:596
19507759943732,404cyclictest0-21swapper/1407:52:456
1950775994365,28cyclictest0-21swapper/1408:31:456
1950775994365,28cyclictest0-21swapper/1407:46:546
1950775994364,28cyclictest0-21swapper/1408:12:456
19507759943611,27cyclictest0-21swapper/1407:31:346
19507709942622,402cyclictest0-21swapper/908:34:3815
1950776994230,0cyclictest0-21swapper/1509:50:277
19507729942128,392cyclictest11513-21TaskCon~ller3
1950776994190,418cyclictest0-21swapper/1508:40:437
1950776994190,418cyclictest0-21swapper/1508:40:437
195077499419416,2cyclictest1992734-21kworker/13:2+i915-unordered07:54:465
19507729941918,398cyclictest0-21swapper/1107:33:143
195077699418417,0cyclictest0-21swapper/1511:55:047
195077499417414,2cyclictest1964784-21kworker/13:0+i915-unordered07:25:315
195076199415415,0cyclictest0-21swapper/207:10:598
195076499412408,3cyclictest2090797-21kworker/u64:2+events_unbound09:49:1311
195076699411409,2cyclictest1924-21snmpd09:50:2712
1950776994099,399cyclictest0-21swapper/1508:11:337
19507639940914,394cyclictest0-21swapper/407:20:4410
1950759994095,400cyclictest0-21swapper/007:27:590
195077199408407,1cyclictest5664-21gnome-shell07:10:592
195075999408404,3cyclictest0-21swapper/007:38:480
1950772994079,1cyclictest0-21swapper/1108:04:163
195075999405399,6cyclictest0-21swapper/007:15:460
1950770994040,401cyclictest0-21swapper/908:12:2215
195076999404398,6cyclictest12354-21Renderer07:16:4614
195076799404400,3cyclictest5664-21gnome-shell07:12:5913
1950776994030,402cyclictest1954880-21turbostat07:19:547
1950776994030,402cyclictest0-21swapper/1507:25:537
195076499402400,1cyclictest0-21swapper/509:43:1311
195076499402399,2cyclictest2011095-21kworker/5:0+events08:42:3711
195076499402399,2cyclictest2011095-21kworker/5:0+events08:42:3611
195076499402399,2cyclictest1945311-21kworker/5:0+events07:10:2211
1950775994010,0cyclictest0-21swapper/1407:12:446
195076499401398,2cyclictest1951371-21kworker/5:2+events08:14:4311
195075999401396,5cyclictest0-21swapper/007:54:460
1950769994000,399cyclictest0-21swapper/808:00:2014
1950769993990,398cyclictest0-21swapper/808:17:5014
1950762993991,397cyclictest0-21swapper/307:42:389
195075999399395,3cyclictest1924-21snmpd11:55:040
1950769993980,398cyclictest0-21swapper/808:21:4714
195076699398394,3cyclictest5664-21gnome-shell07:26:5912
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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