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2026-06-02 - 15:26
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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 Tue Jun 02, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
92714299119109,7cyclictest975297-21latency_hist09:40:010
9271429910899,6cyclictest993053-21kworker/u8:0+events_unbound10:55:010
9271439910696,8cyclictest980070-21latency_hist09:55:011
9271439910495,7cyclictest935267-21kworker/u8:1+flush-179:007:40:011
9271439910396,5cyclictest926969-21kworker/u8:2+events_unbound07:10:231
9271439910095,4cyclictest935267-21kworker/u8:1+flush-179:007:55:001
927143999888,7cyclictest978484-21latency_hist09:50:011
927143999690,4cyclictest918758-21kworker/u8:0+flush-179:007:45:011
927143999677,6cyclictest978463-21kworker/u8:0+events_unbound09:55:241
927143999590,4cyclictest949628-21kworker/u8:3+flush-179:008:30:001
927143999587,5cyclictest955949-21latency_hist08:40:011
927143999489,4cyclictest940578-21kworker/u8:2+flush-179:008:10:221
927143999489,3cyclictest993053-21kworker/u8:0+flush-179:010:35:001
927143999379,9cyclictest1213033-21systemd-journal12:24:591
927142999082,6cyclictest1012405-21kworker/u8:3+events_unbound12:15:000
927143998980,7cyclictest973425-21kworker/u8:1+flush-179:009:35:011
927142998881,5cyclictest994641-21kworker/u8:2+events_unbound11:20:140
927143998679,5cyclictest946432-21kworker/u8:1+flush-179:008:55:231
927143998578,4cyclictest946432-21kworker/u8:1+events_unbound08:30:141
927143998577,6cyclictest946432-21kworker/u8:1+flush-179:008:15:161
927142998578,5cyclictest954387-21kworker/u8:2+flush-179:009:20:150
927142998475,6cyclictest946398-21latency_hist08:10:010
927143998374,7cyclictest1004721-21apt-get11:10:111
927142998377,4cyclictest978463-21kworker/u8:0+flush-179:010:00:160
927142998376,4cyclictest1018244-21kworker/u8:2+flush-179:012:25:220
927143998277,4cyclictest994641-21kworker/u8:2+flush-179:011:40:001
927143998276,4cyclictest971308-21kworker/u8:0+flush-179:009:30:211
927142998274,5cyclictest928604-21latency_hist07:15:010
927142998273,6cyclictest988055-21latency_hist10:20:010
927143998175,4cyclictest1013996-21kworker/u8:1+flush-179:011:45:251
927143998174,5cyclictest1002636-21apt-get11:05:031
927143998174,4cyclictest993053-21kworker/u8:0+events_unbound10:55:151
927143998171,7cyclictest971858-21latency_hist09:30:011
927142998174,5cyclictest981638-21kworker/u8:1+flush-179:010:35:250
927143998073,6cyclictest918758-21kworker/u8:0+flush-179:007:50:001
927143998071,7cyclictest1012405-21kworker/u8:3+flush-179:011:50:201
927143998071,6cyclictest1018244-21kworker/u8:2+flush-179:012:15:191
927143998070,7cyclictest959130-21latency_hist08:50:011
927142998074,4cyclictest971308-21kworker/u8:0+flush-179:009:30:160
927142998071,6cyclictest1012420-21latency_hist11:35:010
927142998071,6cyclictest1012420-21latency_hist11:35:010
927143997973,4cyclictest981638-21kworker/u8:1+flush-179:010:35:231
927143997972,5cyclictest994641-21kworker/u8:2+flush-179:011:20:211
927143997972,5cyclictest946432-21kworker/u8:1+flush-179:008:40:261
927143997972,5cyclictest946432-21kworker/u8:1+flush-179:008:40:261
927142997974,4cyclictest940578-21kworker/u8:2+flush-179:008:04:560
927142997972,5cyclictest1018244-21kworker/u8:2+events_unbound11:55:020
927142997968,8cyclictest933387-21latency_hist07:30:020
927142997867,8cyclictest926990-21latency_hist07:10:030
927143997770,5cyclictest918758-21kworker/u8:0+flush-179:007:25:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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