OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #5

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 100 highest latencies:

System rack0slot5.osadl.org (updated Mon Mar 30, 2026 00:43:48)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4149894	99	547	18,528	cyclictest	0	-21	swapper/12	23:11:37	4
4149894	99	540	25,514	cyclictest	0	-21	swapper/12	23:05:37	4
4149862	99	518	516,2	cyclictest	142002	-21	kworker/4:1+i915-unordered	23:11:37	10
4149907	99	513	13,499	cyclictest	0	-21	swapper/15	20:18:37	7
4149889	99	513	87,425	cyclictest	9384	-21	kworker/11:1+i915-unordered	20:21:37	3
4149862	99	511	508,2	cyclictest	142002	-21	kworker/4:1+i915-unordered	23:05:37	10
4149870	99	510	509,1	cyclictest	17527	-21	kworker/6:1+i915-unordered	20:50:37	12
4149870	99	510	509,1	cyclictest	17527	-21	kworker/6:1+i915-unordered	20:50:37	12
4149907	99	504	6,498	cyclictest	0	-21	swapper/15	23:02:37	7
4149889	99	494	492,2	cyclictest	57638	-21	kworker/11:0+i915-unordered	21:30:37	3
4149889	99	493	491,2	cyclictest	29226	-21	kworker/11:0+i915-unordered	20:41:37	3
4149889	99	493	491,2	cyclictest	29226	-21	kworker/11:0+i915-unordered	20:41:37	3
4149889	99	491	489,1	cyclictest	4145527	-21	kworker/11:0+i915-unordered	19:10:38	3
4149889	99	490	489,1	cyclictest	4174787	-21	kworker/11:0+i915-unordered	19:37:37	3
4149881	99	481	9,471	cyclictest	0	-21	swapper/9	19:47:37	15
4149889	99	472	32,439	cyclictest	0	-21	swapper/11	23:58:37	3
4149889	99	471	31,439	cyclictest	0	-21	swapper/11	23:05:37	3
4149874	99	471	471,0	cyclictest	129920	-21	kworker/7:2+i915-unordered	23:02:37	13
4149851	99	468	466,2	cyclictest	4175744	-21	kworker/1:2+i915-unordered	19:47:37	1
4149877	99	465	464,1	cyclictest	57429	-21	kworker/8:2+i915-unordered	21:32:37	14
4149845	99	464	8,59	cyclictest	0	-21	swapper/0	19:14:22	0
4149845	99	462	8,58	cyclictest	0	-21	swapper/0	21:40:22	0
4149889	99	461	19,439	cyclictest	0	-21	swapper/11	19:20:37	3
4149881	99	460	457,2	cyclictest	4149441	-21	kworker/9:4+i915-unordered	21:37:37	15
4149889	99	458	18,439	cyclictest	0	-21	swapper/11	22:33:37	3
4149889	99	458	0,457	cyclictest	0	-21	swapper/11	21:37:37	3
4149889	99	456	13,0	cyclictest	0	-21	swapper/11	19:47:37	3
4149877	99	454	395,28	cyclictest	0	-21	swapper/8	19:52:23	14
4149889	99	453	12,440	cyclictest	0	-21	swapper/11	00:05:37	3
4149889	99	453	0,452	cyclictest	0	-21	swapper/11	20:18:37	3
4149874	99	452	450,2	cyclictest	9294	-21	kworker/7:1+i915-unordered	20:18:37	13
4149877	99	451	26,30	cyclictest	0	-21	swapper/8	20:31:20	14
4149889	99	448	447,1	cyclictest	0	-21	swapper/11	23:37:37	3
4149889	99	448	447,1	cyclictest	0	-21	swapper/11	23:37:37	3
4149851	99	446	444,2	cyclictest	0	-21	swapper/1	21:37:37	1
4149845	99	444	16,30	cyclictest	0	-21	swapper/0	23:04:58	0
4149884	99	442	16,30	cyclictest	0	-21	swapper/10	00:32:21	2
4149851	99	442	21,420	cyclictest	0	-21	swapper/1	22:00:37	1
4149884	99	441	15,30	cyclictest	0	-21	swapper/10	19:48:58	2
4149889	99	440	0,437	cyclictest	0	-21	swapper/11	20:50:37	3
4149889	99	440	0,437	cyclictest	0	-21	swapper/11	20:50:37	3
4149884	99	440	18,30	cyclictest	0	-21	swapper/10	23:45:58	2
4149884	99	440	18,30	cyclictest	0	-21	swapper/10	23:45:58	2
4149884	99	440	16,30	cyclictest	0	-21	swapper/10	22:28:19	2
4149845	99	440	12,30	cyclictest	0	-21	swapper/0	19:51:22	0
4149884	99	439	14,30	cyclictest	0	-21	swapper/10	00:24:23	2
4149845	99	439	13,30	cyclictest	0	-21	swapper/0	23:52:00	0
4149845	99	439	12,30	cyclictest	0	-21	swapper/0	20:16:21	0
4149855	99	438	435,2	cyclictest	121850	-21	kworker/2:2+events	23:20:01	8
4149889	99	437	14,30	cyclictest	0	-21	swapper/11	19:40:37	3
4149845	99	437	12,29	cyclictest	0	-21	swapper/0	22:47:21	0
4149845	99	435	8,30	cyclictest	0	-21	swapper/0	23:38:22	0
4149845	99	435	8,30	cyclictest	0	-21	swapper/0	23:38:22	0
4149855	99	433	430,2	cyclictest	37624	-21	kworker/2:0+events	20:56:21	8
4149855	99	433	430,2	cyclictest	166202	-21	kworker/2:1+events	00:13:20	8
4149862	99	431	23,30	cyclictest	0	-21	swapper/4	19:11:37	10
4149845	99	431	0,427	cyclictest	0	-21	swapper/0	00:28:31	0
4149874	99	429	2,426	cyclictest	0	-21	swapper/7	19:21:37	13
4149870	99	429	5,30	cyclictest	79	-21	ksoftirqd/6	22:18:37	12
4149870	99	429	429,0	cyclictest	0	-21	swapper/6	19:46:37	12
4149855	99	429	428,1	cyclictest	166202	-21	kworker/2:1+events	23:52:01	8
4149855	99	429	426,2	cyclictest	166202	-21	kworker/2:1+events	23:41:21	8
4149855	99	429	426,2	cyclictest	166202	-21	kworker/2:1+events	23:41:21	8
4149845	99	429	4,29	cyclictest	0	-21	swapper/0	00:15:59	0
4149851	99	427	424,2	cyclictest	4149309	-21	kworker/u64:2+events_unbound	19:21:37	1
4149903	99	426	0,30	cyclictest	0	-21	swapper/14	20:41:00	6
4149903	99	426	0,30	cyclictest	0	-21	swapper/14	20:41:00	6
4149894	99	426	0,425	cyclictest	0	-21	swapper/12	00:11:48	4
4149877	99	426	5,29	cyclictest	0	-21	swapper/8	22:57:59	14
4149870	99	426	7,30	cyclictest	79	-21	ksoftirqd/6	20:42:37	12
4149870	99	426	7,30	cyclictest	79	-21	ksoftirqd/6	20:42:37	12
4149894	99	425	424,1	cyclictest	1818	-21	snmpd	21:29:32	4
4149907	99	424	24,399	cyclictest	0	-21	swapper/15	22:22:59	7
4149874	99	424	421,2	cyclictest	5138	-21	kworker/u64:9+events_unbound	21:20:37	13
4149845	99	424	0,28	cyclictest	0	-21	swapper/0	21:36:37	0
4149907	99	423	422,1	cyclictest	0	-21	swapper/15	00:28:31	7
4149894	99	423	23,399	cyclictest	0	-21	swapper/12	21:01:59	4
4149894	99	423	23,399	cyclictest	0	-21	swapper/12	19:27:21	4
4149845	99	423	0,28	cyclictest	0	-21	swapper/0	23:59:59	0
4149894	99	422	25,396	cyclictest	0	-21	swapper/12	22:05:00	4
4149894	99	422	24,397	cyclictest	0	-21	swapper/12	20:38:19	4
4149845	99	422	22,399	cyclictest	0	-21	swapper/0	21:05:00	0
4149894	99	421	23,397	cyclictest	0	-21	swapper/12	20:49:00	4
4149894	99	421	23,397	cyclictest	0	-21	swapper/12	20:49:00	4
4149855	99	421	418,3	cyclictest	0	-21	swapper/2	21:38:37	8
4149894	99	420	22,397	cyclictest	0	-21	swapper/12	20:32:00	4
4149894	99	420	22,397	cyclictest	0	-21	swapper/12	19:31:20	4
4149894	99	420	21,398	cyclictest	0	-21	swapper/12	23:59:00	4
4149894	99	420	21,398	cyclictest	0	-21	swapper/12	21:47:21	4
4149894	99	420	20,399	cyclictest	0	-21	swapper/12	21:53:00	4
4149894	99	420	19,400	cyclictest	0	-21	swapper/12	22:15:58	4
4149894	99	420	19,400	cyclictest	0	-21	swapper/12	00:21:59	4
4149855	99	420	418,1	cyclictest	45488	-21	kworker/2:2+events	21:12:01	8
4149894	99	419	20,398	cyclictest	0	-21	swapper/12	19:42:19	4
4149894	99	419	18,400	cyclictest	0	-21	swapper/12	23:15:59	4
4149889	99	419	21,395	cyclictest	0	-21	swapper/11	20:25:00	3
4149903	99	418	18,398	cyclictest	0	-21	swapper/14	22:45:22	6
4149894	99	418	20,397	cyclictest	0	-21	swapper/12	23:43:20	4
4149894	99	418	20,397	cyclictest	0	-21	swapper/12	23:43:20	4
4149894	99	418	19,398	cyclictest	0	-21	swapper/12	23:35:22	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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