You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-26 - 15:30
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 (updated Wed Nov 26, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319657199106102,3cyclictest3281386-21kworker/u8:0+events_unbound00:04:011
31965719910085,12cyclictest3258278-21latency_hist22:20:001
3196565999787,7cyclictest3250060-21latency_hist21:55:010
3196571999285,6cyclictest3266500-21kworker/u8:2+events_unbound23:00:011
3196571999285,6cyclictest3266500-21kworker/u8:2+events_unbound23:00:001
3196571998783,3cyclictest3183812-21kworker/u8:1+flush-179:019:20:241
3196571998680,5cyclictest3251625-21kworker/u8:2+flush-179:022:05:261
3196571998679,5cyclictest3228839-21kworker/u8:0+flush-179:021:20:011
3196565998475,7cyclictest3290921-40mandb00:00:010
3196571998368,14cyclictest3214043-21kworker/u8:2+flush-179:020:40:001
3196571998276,5cyclictest3251625-21kworker/u8:2+events_unbound22:20:021
3196565998272,8cyclictest3215592-21latency_hist20:10:010
3196571998168,4cyclictest3207618-21kworker/u8:1+events_unbound20:20:141
3196565998066,12cyclictest3254844-21apt-get22:10:000
3196571997975,3cyclictest3214043-21kworker/u8:2+flush-179:020:10:271
3196571997873,4cyclictest3266500-21kworker/u8:2+flush-179:023:15:261
3196571997772,4cyclictest3281386-21kworker/u8:0+events_unbound00:05:241
3196571997772,4cyclictest3259011-21kworker/u8:0+flush-179:022:30:211
3196571997570,4cyclictest3241573-21kworker/u8:3+flush-179:021:30:271
3196571997468,5cyclictest3214043-21kworker/u8:2+flush-179:020:55:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional