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2026-03-22 - 01:59
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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 Sat Mar 21, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6245719911697,5cyclictest266-21systemd-journal09:19:590
6245739910191,7cyclictest700307-21latency_hist11:05:021
6245739910191,7cyclictest627633-21latency_hist07:20:011
6245739910085,12cyclictest701904-21apt-get11:10:001
624573999989,7cyclictest266-21systemd-journal08:05:001
624571999585,7cyclictest716454-21kworker/u8:0+events_unbound11:55:000
624571999488,4cyclictest690483-21kworker/u8:2+events_unbound11:00:000
624571998777,8cyclictest643832-21latency_hist08:10:010
624571998678,6cyclictest664511-21latency_hist09:15:010
624571998675,8cyclictest703737-21latency_hist11:15:010
62457199860,84cyclictest1-21systemd08:59:590
624571998575,7cyclictest711697-21latency_hist11:40:010
624573998373,7cyclictest674590-21latency_hist09:45:001
624571998275,5cyclictest678396-21kworker/u8:0+flush-179:010:10:230
624571998168,10cyclictest266-21systemd-journal08:20:010
624573997970,6cyclictest724477-21kworker/u8:0+events_unbound12:20:001
624573997869,7cyclictest650200-21latency_hist08:30:011
624571997668,6cyclictest624429-21latency_hist07:10:020
62457199760,75cyclictest0-21swapper/011:32:590
624571997569,4cyclictest721238-21kworker/u8:2+events_unbound12:25:010
624573997365,6cyclictest632382-21kworker/u8:2+flush-179:007:50:011
624571997364,7cyclictest698755-21kworker/u8:1+flush-179:011:15:190
624571997267,3cyclictest721238-21kworker/u8:2+flush-179:012:35:230
624571997264,6cyclictest635867-21kworker/u8:1+flush-179:007:55:010
624573997167,3cyclictest624520-21kworker/u8:1+flush-179:007:35:211
624573997166,3cyclictest680953-21latency_hist10:05:011
624573997063,5cyclictest656565-21latency_hist08:50:021
624573996962,5cyclictest3985583-21kworker/u8:4+events_unbound07:15:011
624573996962,5cyclictest3985583-21kworker/u8:4+events_unbound07:15:011
624571996764,2cyclictest1-21systemd12:00:000
624571996761,4cyclictest669540-21kworker/u8:1+flush-179:009:45:240
624571996659,5cyclictest647079-21kworker/u8:3+flush-179:008:30:210
624571996650,5cyclictest688374-21kworker/u8:3+events_unbound10:35:010
624573996558,5cyclictest662928-21latency_hist09:10:001
624573996557,6cyclictest651785-21latency_hist08:35:001
624573996552,10cyclictest632406-21latency_hist07:35:011
624571996561,3cyclictest624520-21kworker/u8:1+flush-179:007:24:550
624571996559,4cyclictest727711-21kworker/u8:3+flush-179:012:30:210
624571996556,6cyclictest635883-21latency_hist07:45:010
624573996427,22cyclictest671652-21apt-get09:35:111
624573996427,22cyclictest671652-21apt-get09:35:101
624571996460,3cyclictest698755-21kworker/u8:1+flush-179:012:15:230
624571996457,5cyclictest659725-21kworker/u8:0+events_unbound09:05:240
624571996454,7cyclictest266-21systemd-journal09:55:010
624571996354,7cyclictest678396-21kworker/u8:0+flush-179:010:15:200
624571996255,5cyclictest659725-21kworker/u8:0+flush-179:009:25:230
624573996153,6cyclictest635867-21kworker/u8:1+flush-179:008:15:211
624571996155,4cyclictest649678-21kworker/u8:1+events_unbound08:40:140
624571996053,5cyclictest682523-21kworker/u8:1+flush-179:010:20:220
624571995953,5cyclictest659725-21kworker/u8:0+flush-179:009:20:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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