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2025-09-15 - 20:25
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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 20 highest latencies:
System rackeslot6.osadl.org (updated Mon Sep 15, 2025 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
382956599141129,10cyclictest3916609-21apt-get11:39:171
382956599113107,4cyclictest3834553-21kworker/u8:0+events_unbound07:40:191
38295619911397,13cyclictest3919845-21latency_hist11:50:010
38295619911199,9cyclictest3869620-21latency_hist09:15:010
382956599110105,4cyclictest3881017-21kworker/u8:0+events_unbound09:50:221
38295659910998,7cyclictest3921693-21latency_hist11:55:001
382956599108103,4cyclictest3873112-21kworker/u8:2+events_unbound09:30:231
38295659910599,4cyclictest3858523-21kworker/u8:3+events_unbound09:00:181
38295659910499,4cyclictest3827695-21kworker/u8:2+events_unbound07:20:251
38295619910493,9cyclictest3916925-21apt-get11:40:120
38295659910297,4cyclictest3842781-21kworker/u8:0+events_unbound08:05:231
38295619910292,8cyclictest3889770-21apt-get10:15:120
38295659910196,4cyclictest3903886-21kworker/u8:0+events_unbound11:00:281
38295659910195,4cyclictest3842781-21kworker/u8:0+events_unbound08:35:201
38295659910189,9cyclictest3837736-21latency_hist07:35:021
3829561999991,5cyclictest3827695-21kworker/u8:2+flush-179:007:36:180
3829561999887,9cyclictest3913676-21apt-get11:30:130
3829561999785,10cyclictest3930452-21apt-get12:25:140
3829565999691,4cyclictest3869653-21kworker/u8:1+events_unbound09:40:271
3829565999685,8cyclictest3933375-21latency_hist12:35:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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