You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-18 - 09:31
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
Characteristics of the 20 highest latencies:
System rack1slot1.osadl.org (updated Thu Sep 18, 2025 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311652207150,44sleep30-21swapper/319:07:163
310762203149,41sleep10-21swapper/119:06:051
292092200159,27sleep20-21swapper/219:05:022
313702199161,25sleep00-21swapper/019:09:550
220002560,0sleep20-21swapper/222:37:542
3149699230,0cyclictest0-21swapper/223:30:102
21102150,0sleep32071-21perf00:25:013
93242140,0sleep10-21swapper/120:35:171
31475991313,0cyclictest9-21ksoftirqd/022:55:170
31475991312,1cyclictest9-21ksoftirqd/000:15:230
3147599128,1cyclictest9-21ksoftirqd/022:50:150
31475991211,1cyclictest9-21ksoftirqd/022:05:010
31475991210,1cyclictest9-21ksoftirqd/023:40:000
31475991210,1cyclictest9-21ksoftirqd/021:15:000
31475991210,1cyclictest11883-21aten2.4-expect19:35:130
3147599120,5cyclictest254-21systemd-journal23:50:170
3149699119,1cyclictest28-21ksoftirqd/221:00:002
3148499111,8cyclictest0-21swapper/100:10:141
3147599119,1cyclictest9-21ksoftirqd/022:45:140
3147599119,1cyclictest9-21ksoftirqd/020:05:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional