OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #a, slot #4

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.

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 792 highest latencies:

System rackaslot4.osadl.org (updated Wed Feb 04, 2026 00:43:24)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
331395	99	26	3,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	25	1,13	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	24	1,12	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	22	1,13	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	22	1,12	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	21	0,12	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	17	1,9	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	17	1,12	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	17	1,11	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	17	1,11	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	17	1,10	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	17	1,10	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	16	2,9	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	16	2,9	cyclictest	0	-21	swapper/2		2
331395	99	16	2,9	cyclictest	0	-21	swapper/2		2
331395	99	16	2,9	cyclictest	0	-21	swapper/2		2
331395	99	16	2,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	16	1,9	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,9	cyclictest	0	-21	swapper/2		2
331395	99	16	1,11	cyclictest	157	-21	kworker/2:1-events_freezable		2
331395	99	15	2,8	cyclictest	0	-21	swapper/2		2
331395	99	15	2,8	cyclictest	0	-21	swapper/2		2
331395	99	15	2,8	cyclictest	0	-21	swapper/2		2
331395	99	15	2,8	cyclictest	0	-21	swapper/2		2
331395	99	15	2,8	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,9	cyclictest	0	-21	swapper/2		2
331395	99	15	1,8	cyclictest	0	-21	swapper/2		2
331395	99	15	1,8	cyclictest	0	-21	swapper/2		2
331395	99	15	1,8	cyclictest	0	-21	swapper/2		2
331395	99	15	1,8	cyclictest	0	-21	swapper/2		2
331395	99	15	1,8	cyclictest	0	-21	swapper/2		2
331395	99	15	1,8	cyclictest	0	-21	swapper/2		2
331395	99	15	1,8	cyclictest	0	-21	swapper/2		2
331395	99	15	0,9	cyclictest	0	-21	swapper/2		2
331395	99	15	0,9	cyclictest	0	-21	swapper/2		2
331395	99	15	0,9	cyclictest	0	-21	swapper/2		2
331395	99	14	1,9	cyclictest	0	-21	swapper/2		2
331395	99	14	1,8	cyclictest	0	-21	swapper/2		2
331395	99	14	1,7	cyclictest	0	-21	swapper/2		2
331395	99	14	0,9	cyclictest	0	-21	swapper/2		2
331395	99	14	0,9	cyclictest	0	-21	swapper/2		2
331395	99	14	0,9	cyclictest	0	-21	swapper/2		2
331395	99	7	2,3	cyclictest	0	-21	swapper/2		2
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^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17