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 all highest latencies:

System rackaslot4.osadl.org (updated Fri Jan 30, 2026 12:43:24)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3732372	99	36	8,18	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	35	7,18	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	32	6,18	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	32	6,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	32	6,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	32	5,18	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	32	5,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	31	6,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	31	5,18	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	31	5,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	31	5,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	31	5,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	31	5,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	31	5,19	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	30	5,16	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	30	5,16	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	28	6,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	25	5,16	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	25	3,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	25	4,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	24	5,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	24	3,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	24	3,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	24	2,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	24	1,18	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	24	1,17	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	23	5,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	23	5,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	23	4,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	23	3,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	23	3,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	23	5,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	23	3,16	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	23	1,18	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	22	5,13	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	22	4,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	22	3,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	22	3,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	22	3,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	22	3,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	22	2,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	22	4,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	22	1,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	22	1,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	21	5,12	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	21	3,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	21	3,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	21	3,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	21	3,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	21	2,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	21	3,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	21	1,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	21	0,15	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	20	5,12	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	20	2,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	20	1,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	20	1,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	20	1,14	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	19	4,11	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	19	1,12	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	19	1,11	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	19	0,13	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	18	4,11	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	18	4,11	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732372	99	18	2,12	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	17	2,11	cyclictest	157	-21	kworker/2:1-events_freezable		2
3732367	99	8	1,4	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