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2026-03-26 - 09:46
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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 Mar 26, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5299039911081,27cyclictest576475-21kworker/u8:2+flush-179:021:35:011
5299019910084,12cyclictest266-21systemd-journal19:15:000
529903999184,5cyclictest536201-21kworker/u8:3+flush-179:019:40:001
529903999182,7cyclictest550485-21latency_hist20:15:011
529901998985,3cyclictest567980-21kworker/u8:1+events_unbound21:15:240
529903998879,6cyclictest532995-21latency_hist19:20:001
529903997969,7cyclictest597753-21latency_hist22:40:001
529901997873,4cyclictest628308-21kworker/u8:1+events_unbound00:15:260
52990399770,74cyclictest714-21Xorg00:34:591
529901997671,3cyclictest536201-21kworker/u8:3+events_unbound20:00:210
529901997667,7cyclictest565590-21/usr/sbin/munin21:00:220
529901997570,4cyclictest608355-21kworker/u8:3+events_unbound23:10:250
529901997369,3cyclictest633082-21kworker/u8:1+events_unbound00:35:200
529901997366,5cyclictest607308-21latency_hist23:10:010
529903997263,7cyclictest560572-21latency_hist20:45:001
529903997162,7cyclictest570112-21latency_hist21:15:001
529903996963,4cyclictest548943-21kworker/u8:0+flush-179:020:20:211
529901996965,3cyclictest612068-21kworker/u8:1+events_unbound23:39:550
529901996962,5cyclictest563776-21kworker/u8:0+events_unbound20:55:250
529901996962,5cyclictest563776-21kworker/u8:0+events_unbound20:55:240
529903996862,4cyclictest576475-21kworker/u8:2+events_unbound21:35:231
529903996661,4cyclictest620339-21kworker/u8:3+events_unbound00:04:031
529903996661,4cyclictest584756-21kworker/u8:2+flush-179:022:04:551
529901996662,3cyclictest584756-21kworker/u8:2+events_unbound22:05:000
529901996662,3cyclictest526813-21kworker/u8:0+events_unbound19:19:560
529903996560,3cyclictest603581-21kworker/u8:0+flush-179:023:00:241
529901996561,3cyclictest584756-21kworker/u8:2+events_unbound22:07:270
529901996560,4cyclictest595038-21kworker/u8:1+events_unbound23:01:150
529901996560,4cyclictest540981-21kworker/u8:1+events_unbound20:05:520
529901996556,4cyclictest548943-21kworker/u8:0+events_unbound20:21:290
529901996555,8cyclictest510-21rs:main0
529903996459,4cyclictest563776-21kworker/u8:0+flush-179:020:55:221
529903996459,4cyclictest563776-21kworker/u8:0+flush-179:020:55:221
529901996460,3cyclictest603581-21kworker/u8:0+events_unbound23:29:280
529901996459,4cyclictest607349-21kworker/u8:2+events_unbound23:16:180
529901996459,4cyclictest539327-21kworker/u8:0+events_unbound19:54:280
529901996453,9cyclictest533248-21apt-get19:20:110
529903996357,5cyclictest628351-21kworker/u8:3+events_unbound00:20:001
529903996357,5cyclictest603581-21kworker/u8:0+flush-179:023:15:211
529903996356,5cyclictest554178-21kworker/u8:3+events_unbound20:30:001
529901996359,3cyclictest533026-21kworker/u8:2+events_unbound19:38:270
529903996257,3cyclictest595836-21kworker/u8:3+flush-179:022:45:221
529903996253,6cyclictest592676-21latency_hist22:25:021
529901996258,3cyclictest578589-21kworker/u8:1+events_unbound21:46:070
529901996258,3cyclictest563776-21kworker/u8:0+events_unbound21:11:020
529901996258,3cyclictest540981-21kworker/u8:1+events_unbound20:45:280
529901996257,4cyclictest626720-21kworker/u8:2+events_unbound00:14:380
529901996257,4cyclictest595836-21kworker/u8:3+events_unbound22:38:280
529901996250,8cyclictest536165-21latency_hist19:30:010
529903996157,3cyclictest623451-21kworker/u8:1+flush-179:000:05:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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