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2026-03-15 - 23:08
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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 Sun Mar 15, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75246799109101,6cyclictest784254-21kworker/u8:2+events_unbound08:55:031
752467999893,3cyclictest777888-21kworker/u8:3+events_unbound09:00:231
752467999891,5cyclictest842097-21kworker/u8:0+events_unbound12:35:241
752467999582,5cyclictest777288-21kworker/u8:1+events_unbound08:30:191
752467999490,3cyclictest787699-21kworker/u8:4+events_unbound09:05:241
752467999078,5cyclictest753975-21kworker/u8:2+events_unbound07:25:201
752467998984,4cyclictest777888-21kworker/u8:3+events_unbound09:25:241
752466998980,6cyclictest765116-21latency_hist07:50:010
752467998876,9cyclictest266-21systemd-journal09:50:001
752467998579,4cyclictest850670-21kworker/u8:2+flush-179:012:25:231
752467998572,5cyclictest765373-21kworker/u8:1+events_unbound08:15:261
752467998567,12cyclictest760348-21kworker/u8:3+flush-179:007:40:151
752466998576,7cyclictest266-21systemd-journal08:15:000
752467998378,4cyclictest805573-21kworker/u8:1+flush-179:010:05:191
752467998168,10cyclictest266-21systemd-journal08:40:001
752467998076,3cyclictest777888-21kworker/u8:3+events_unbound09:30:231
752467998075,4cyclictest842097-21kworker/u8:0+flush-179:012:20:001
752467998075,4cyclictest777888-21kworker/u8:3+events_unbound09:35:211
752467997865,7cyclictest781083-21kworker/u8:0+events_unbound08:45:201
752467997772,4cyclictest845242-21kworker/u8:2+events_unbound12:00:201
752467997772,4cyclictest774714-21kworker/u8:2+events_unbound08:25:011
752467997772,4cyclictest766738-21kworker/u8:3+flush-179:008:05:231
752467997768,4cyclictest806477-21kworker/u8:3+events_unbound10:20:241
752467997668,5cyclictest809987-21kworker/u8:0+events_unbound10:15:191
752467997664,5cyclictest806477-21kworker/u8:3+events_unbound10:30:201
752467997569,4cyclictest809987-21kworker/u8:0+flush-179:010:35:191
752467997566,6cyclictest848420-21latency_hist12:10:011
752467997167,3cyclictest854833-21kworker/u8:1+flush-179:012:30:151
752467997165,4cyclictest765373-21kworker/u8:1+events_unbound08:10:201
752467997066,3cyclictest837255-21kworker/u8:1+flush-179:011:39:551
752467997063,5cyclictest805573-21kworker/u8:1+events_unbound09:55:221
752466997056,10cyclictest266-21systemd-journal11:09:590
752467996863,4cyclictest816354-21kworker/u8:2+flush-179:011:05:211
752467996863,4cyclictest816354-21kworker/u8:2+events_unbound10:40:181
752467996863,4cyclictest763550-21kworker/u8:2+events_unbound07:50:201
752467996862,4cyclictest777888-21kworker/u8:3+flush-179:008:40:191
752466996855,10cyclictest266-21systemd-journal07:40:220
752467996763,3cyclictest837255-21kworker/u8:1+flush-179:011:49:551
752467996761,5cyclictest753975-21kworker/u8:2+events_unbound07:20:221
752467996660,5cyclictest806477-21kworker/u8:3+events_unbound10:00:241
752467996659,6cyclictest819551-21kworker/u8:1+events_unbound10:45:251
752467996560,4cyclictest777288-21kworker/u8:1+events_unbound08:30:001
752467996555,7cyclictest792432-21latency_hist09:15:011
752467996552,4cyclictest760348-21kworker/u8:3+events_unbound07:35:171
752467996460,3cyclictest837255-21kworker/u8:1+flush-179:011:55:261
752466996454,7cyclictest266-21systemd-journal08:00:000
752467996359,3cyclictest827149-21kworker/u8:1+events_unbound11:10:241
752467996359,3cyclictest816354-21kworker/u8:2+events_unbound10:50:231
752467996257,4cyclictest777888-21kworker/u8:3+events_unbound08:50:271
752466996254,5cyclictest846835-21latency_hist12:05:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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