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2026-06-09 - 01:47
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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 Mon Jun 08, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5434189911798,17cyclictest649744-21apt-get12:40:010
54341899111101,7cyclictest608068-21latency_hist10:30:010
5434209910192,6cyclictest577261-21kworker/u8:0+flush-179:008:55:241
543420999989,7cyclictest646549-21latency_hist12:30:001
543418999992,5cyclictest606460-21kworker/u8:1+events_unbound10:40:140
543420999888,8cyclictest575953-21apt-get08:50:131
543420999877,18cyclictest636744-21latency_hist12:00:011
543418999791,5cyclictest636531-21kworker/u8:1+events_unbound12:10:010
543418999790,5cyclictest577261-21kworker/u8:0+flush-179:010:15:020
543418999589,4cyclictest606460-21kworker/u8:1+flush-179:010:55:160
543418999588,5cyclictest557914-21kworker/u8:0+flush-179:008:10:160
543418999481,10cyclictest593735-21apt-get09:45:100
543420999388,4cyclictest636779-21kworker/u8:2+flush-179:012:15:241
543420999282,7cyclictest590285-21latency_hist09:35:011
543418999282,7cyclictest591880-21latency_hist09:40:010
543418998984,3cyclictest548325-21kworker/u8:2+flush-179:007:25:170
543418998782,4cyclictest577261-21kworker/u8:0+events_unbound10:25:000
543418998780,4cyclictest595053-21kworker/u8:1+events_unbound09:50:250
543420998676,6cyclictest609656-21latency_hist10:35:011
543418998679,5cyclictest541817-21kworker/u8:0+flush-179:007:30:140
543418998679,4cyclictest611929-21kworker/u8:2+events_unbound11:00:250
543418998677,7cyclictest560853-21latency_hist08:05:010
543418998575,8cyclictest577291-21apt-get08:54:590
543420998480,3cyclictest577261-21kworker/u8:0+flush-179:010:00:261
543418998371,10cyclictest601445-21apt-get10:10:000
543420998275,5cyclictest596889-21kworker/u8:2+flush-179:010:05:231
543418998275,5cyclictest1-21systemd12:00:000
543420998174,5cyclictest557914-21kworker/u8:0+flush-179:008:35:251
543418998175,4cyclictest606460-21kworker/u8:1+events_unbound10:35:250
543418998074,4cyclictest628752-21kworker/u8:2+flush-179:011:35:170
543418998073,5cyclictest635134-21latency_hist11:55:000
543420997973,4cyclictest565671-21kworker/u8:3+flush-179:008:25:151
543418997770,5cyclictest643412-21kworker/u8:3+flush-179:012:30:220
543418997770,5cyclictest577261-21kworker/u8:0+events_unbound09:20:200
543420997667,7cyclictest646806-21apt-get12:30:111
543418997671,4cyclictest548325-21kworker/u8:2+flush-179:007:50:150
543418997669,5cyclictest557914-21kworker/u8:0+flush-179:007:55:160
543420997566,6cyclictest577261-21kworker/u8:0+flush-179:009:55:161
543420997554,18cyclictest604875-21latency_hist10:20:001
543418997569,4cyclictest557914-21kworker/u8:0+flush-179:008:05:260
543418997568,5cyclictest636531-21kworker/u8:1+flush-179:012:10:200
543418997467,5cyclictest624261-21apt-get11:20:130
543418997367,4cyclictest626638-21kworker/u8:3+flush-179:011:45:230
543418997362,8cyclictest614693-21apt-get10:50:110
543418997265,5cyclictest606460-21kworker/u8:1+flush-179:010:45:250
543418997265,5cyclictest577261-21kworker/u8:0+flush-179:009:35:000
543418997265,5cyclictest577261-21kworker/u8:0+flush-179:009:25:220
543418997264,6cyclictest580738-21latency_hist09:05:020
543418997162,6cyclictest548325-21kworker/u8:2+events_unbound08:30:130
543420997061,6cyclictest541817-21kworker/u8:0+flush-179:007:15:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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