You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-08-30 - 04:13
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 10 highest latencies:
System rack0slot2.osadl.org (updated Sat Aug 30, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32195326858,7sleep50-21swapper/503:27:305
32197425420,30sleep70-21swapper/703:27:487
32191724939,7sleep60-21swapper/603:26:586
322371994543,2cyclictest811116-21kworker/u16:1+flush-8:007:34:355
322371994441,2cyclictest825785-21kworker/u16:0+flush-8:008:29:375
322371994341,2cyclictest3056975-21kworker/u16:5+flush-8:003:54:415
322371994240,2cyclictest796883-21kworker/u16:0+events_unbound07:29:265
322372994038,2cyclictest443592-21kworker/u16:3+events_unbound05:24:376
32186724029,8sleep40-21swapper/403:26:164
322374993833,4cyclictest855331-21latency_hist07:59:097
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional