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2026-06-11 - 15:48
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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 rackeslot6.osadl.org (updated Thu Jun 11, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29951599151142,8cyclictest327048-21kworker/u8:4+events_unbound08:45:001
29951599139132,5cyclictest347800-21kworker/u8:3+events_unbound09:49:211
29951599139132,5cyclictest347800-21kworker/u8:3+events_unbound09:49:211
29951599122104,6cyclictest383572-21kworker/u8:0+events_unbound12:20:251
29951599116111,4cyclictest372230-21kworker/u8:2+events_unbound11:05:011
29951599114104,7cyclictest362371-21kworker/u8:0+events_unbound10:30:181
29951599114103,7cyclictest362389-21latency_hist10:25:011
29951599112106,5cyclictest383572-21kworker/u8:0+flush-179:012:35:241
29951599111105,5cyclictest380463-21kworker/u8:3+events_unbound11:25:011
2995159910897,8cyclictest510-21rs:main1
2995139910797,8cyclictest380418-21latency_hist11:20:010
2995159910692,6cyclictest334488-21kworker/u8:0+events_unbound09:00:251
29951599106101,3cyclictest334488-21kworker/u8:0+events_unbound09:30:221
29951599106100,4cyclictest394755-21kworker/u8:3+events_unbound12:05:241
2995159910596,6cyclictest380463-21kworker/u8:3+events_unbound11:40:211
2995159910596,5cyclictest383572-21kworker/u8:0+events_unbound12:30:131
2995159910587,6cyclictest283756-21kworker/u8:3+events_unbound07:20:181
2995159910395,6cyclictest334488-21kworker/u8:0+events_unbound09:40:191
2995159910297,3cyclictest331821-21kworker/u8:2+flush-179:008:50:251
2995159910296,4cyclictest372230-21kworker/u8:2+flush-179:011:25:231
2995159910190,9cyclictest402961-21apt-get12:29:591
2995159910095,4cyclictest362371-21kworker/u8:0+events_unbound10:45:241
2995159910095,4cyclictest354388-21kworker/u8:2+flush-179:010:00:251
2995159910094,4cyclictest383572-21kworker/u8:0+events_unbound12:15:231
299515999994,4cyclictest309012-21kworker/u8:1+flush-179:008:30:251
299515999994,4cyclictest297922-21kworker/u8:2+events_unbound07:15:241
299513999989,7cyclictest300986-21latency_hist07:15:010
299513999888,7cyclictest354441-21latency_hist10:00:010
299513999882,11cyclictest1213033-21systemd-journal10:40:010
299515999792,3cyclictest334488-21kworker/u8:0+flush-179:009:10:201
299515999791,4cyclictest380463-21kworker/u8:3+events_unbound11:35:151
299515999691,4cyclictest372168-21kworker/u8:1+events_unbound11:05:251
299515999689,4cyclictest323865-21kworker/u8:3+flush-179:008:25:201
299515999687,7cyclictest383572-21kworker/u8:0+events_unbound11:55:011
299515999490,3cyclictest347800-21kworker/u8:3+events_unbound09:55:241
299515999488,4cyclictest283756-21kworker/u8:3+events_unbound07:25:241
299515999488,4cyclictest283756-21kworker/u8:3+events_unbound07:25:241
299515999486,6cyclictest347800-21kworker/u8:3+events_unbound10:05:241
299515999388,3cyclictest283756-21kworker/u8:3+flush-179:007:55:181
299513999381,10cyclictest374049-21apt-get11:00:120
299513999285,4cyclictest331821-21kworker/u8:2+events_unbound08:50:000
299515999186,4cyclictest283756-21kworker/u8:3+events_unbound08:00:241
299515999086,3cyclictest309012-21kworker/u8:1+events_unbound07:50:271
299515999085,4cyclictest347800-21kworker/u8:3+flush-179:010:25:231
299515999082,3cyclictest283756-21kworker/u8:3+events_unbound07:30:231
299515999080,7cyclictest344570-21latency_hist09:30:001
299515998984,4cyclictest362371-21kworker/u8:0+events_unbound10:35:251
299515998984,4cyclictest325505-21kworker/u8:0+events_unbound08:45:221
299513998983,4cyclictest307354-21latency_hist07:35:000
299513998979,7cyclictest302589-21latency_hist07:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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