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2026-05-30 - 07:16
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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 rack0slot2.osadl.org (updated Sat May 30, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21931742970,1sleep72193175-21sh22:08:307
180327625238,9sleep40-21swapper/419:03:184
24019602470,4sleep72401961-21tr23:37:177
1803833994439,4cyclictest2074471-21latency_hist21:22:007
1803819994139,2cyclictest1826531-21kworker/u16:4+events_unbound19:22:234
180330823928,7sleep50-21swapper/519:03:435
17951772391,31sleep70-21swapper/719:02:167
1803819993733,3cyclictest2327778-21kworker/u16:0+flush-8:023:12:004
1803824993230,2cyclictest1961422-21kworker/u16:2+events_unbound21:02:295
1803819993129,2cyclictest1826531-21kworker/u16:4+events_unbound19:27:134
1803819993028,2cyclictest2312763-21kworker/u16:3+events_unbound23:27:254
1803826992927,2cyclictest1826531-21kworker/u16:4+events_unbound20:47:146
180328922919,7sleep60-21swapper/619:03:286
1803819992826,2cyclictest1804042-21kworker/u16:0+events_unbound19:11:544
25085572270,1chrt2508555-21ssh00:21:417
1803819992725,2cyclictest2061461-21kworker/u16:0+events_unbound21:35:054
1803819992725,2cyclictest1826531-21kworker/u16:4+events_unbound20:15:334
1803819992725,2cyclictest1804042-21kworker/u16:0+events_unbound19:12:064
1803819992624,2cyclictest2327778-21kworker/u16:0+flush-8:023:39:084
1803819992624,2cyclictest2327778-21kworker/u16:0+events_unbound23:18:444
1803819992624,2cyclictest1999949-21kworker/u16:1+events_unbound20:59:454
1803819992624,2cyclictest1826531-21kworker/u16:4+events_unbound20:30:224
1803833992519,5cyclictest1855749-21latency_hist19:32:017
1803819992523,2cyclictest2170976-21kworker/u16:3+flush-8:022:27:224
1803819992523,2cyclictest2061461-21kworker/u16:0+events_unbound22:17:534
1803819992422,2cyclictest2327778-21kworker/u16:0+flush-8:023:22:454
1803819992422,2cyclictest2327778-21kworker/u16:0+events_unbound00:12:134
1803819992422,2cyclictest2327778-21kworker/u16:0+events_unbound00:12:134
1803819992422,2cyclictest2061461-21kworker/u16:0+flush-8:022:16:114
1803819992422,2cyclictest2061461-21kworker/u16:0+flush-8:022:16:114
1803819992422,2cyclictest2061461-21kworker/u16:0+flush-8:022:02:164
1803819992422,2cyclictest1793707-21kworker/u16:2+flush-8:020:07:234
1803819992422,2cyclictest1793707-21kworker/u16:2+events_unbound19:41:464
1803819992321,2cyclictest2241046-21kworker/u16:2+events_unbound22:40:204
1803819992321,2cyclictest1999949-21kworker/u16:1+flush-8:020:54:114
1803819992321,2cyclictest1826531-21kworker/u16:4+flush-8:021:15:574
1803819992321,2cyclictest1826531-21kworker/u16:4+events_unbound19:47:184
1803819992220,2cyclictest2436310-21kworker/u16:3+events_unbound23:54:244
1803819992220,2cyclictest2241046-21kworker/u16:2+events_unbound22:35:134
1803819992220,2cyclictest1904344-21kworker/u16:1+flush-8:020:24:294
1803833992115,5cyclictest2544913-21latency_hist00:37:007
1803824992119,2cyclictest2327778-21kworker/u16:0+events_unbound00:00:215
1803824992119,2cyclictest2207117-21kworker/u16:1+events_unbound22:35:505
1803824992119,2cyclictest2207117-21kworker/u16:1+events_unbound22:24:025
1803824992119,2cyclictest2074859-21kworker/u16:2+events_unbound21:35:425
1803819992119,2cyclictest2448784-21kworker/u16:4+events_unbound00:03:074
1803819992119,2cyclictest2327778-21kworker/u16:0+flush-8:023:34:524
1803819992119,2cyclictest2327778-21kworker/u16:0+flush-8:023:34:524
1803819992119,2cyclictest2241046-21kworker/u16:2+flush-8:023:49:324
1803819992119,2cyclictest2061461-21kworker/u16:0+flush-8:021:52:234
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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