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 Thu Jun 25, 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
462899	99	529	10,518	cyclictest	0	-21	swapper/4	21:32:56	10
462938	99	524	522,2	cyclictest	597268	-21	kworker/13:1+i915-unordered	21:38:56	5
462929	99	509	479,30	cyclictest	0	-21	swapper/11	22:48:56	3
462929	99	509	479,30	cyclictest	0	-21	swapper/11	22:48:56	3
462933	99	501	500,1	cyclictest	562909	-21	kworker/12:0+i915-unordered	21:13:56	4
462885	99	494	14,58	cyclictest	0	-21	swapper/0	23:36:40	0
462938	99	483	453,30	cyclictest	0	-21	swapper/13	22:05:56	5
462904	99	481	479,2	cyclictest	0	-21	swapper/5	21:38:56	11
462891	99	476	476,0	cyclictest	0	-21	swapper/2	19:13:57	8
462891	99	476	475,1	cyclictest	0	-21	swapper/2	21:04:56	8
462885	99	475	29,28	cyclictest	528548	-21	perf	20:26:52	0
462885	99	475	27,447	cyclictest	16	-21	ksoftirqd/0	19:49:56	0
462918	99	474	26,30	cyclictest	0	-21	swapper/9	21:35:17	15
462923	99	473	472,1	cyclictest	0	-21	swapper/10	19:35:57	2
462918	99	473	27,29	cyclictest	0	-21	swapper/9	19:36:41	15
462918	99	473	27,28	cyclictest	0	-21	swapper/9	23:48:40	15
462904	99	473	24,29	cyclictest	0	-21	swapper/5	20:28:18	11
462933	99	472	442,30	cyclictest	0	-21	swapper/12	21:08:56	4
462946	99	471	8,462	cyclictest	0	-21	swapper/15	20:43:56	7
462904	99	471	25,30	cyclictest	0	-21	swapper/5	00:22:40	11
462941	99	470	469,1	cyclictest	697	50	irq/159-i915	22:10:56	6
462904	99	470	23,30	cyclictest	0	-21	swapper/5	20:36:40	11
462904	99	469	22,30	cyclictest	0	-21	swapper/5	22:16:18	11
462904	99	469	21,29	cyclictest	0	-21	swapper/5	23:53:40	11
462896	99	469	468,1	cyclictest	645147	-21	kworker/3:2+i915-unordered	22:48:56	9
462896	99	469	468,1	cyclictest	645147	-21	kworker/3:2+i915-unordered	22:48:56	9
462899	99	467	21,29	cyclictest	0	-21	swapper/4	19:31:40	10
462904	99	466	18,30	cyclictest	0	-21	swapper/5	23:09:17	11
462946	99	465	465,0	cyclictest	0	-21	swapper/15	00:23:56	7
462929	99	465	464,0	cyclictest	556403	-21	kworker/11:2+i915-unordered	21:10:56	3
462908	99	465	23,28	cyclictest	0	-21	swapper/6	19:24:56	12
462904	99	465	17,29	cyclictest	0	-21	swapper/5	20:38:41	11
462904	99	463	17,30	cyclictest	0	-21	swapper/5	22:04:18	11
462929	99	462	462,0	cyclictest	0	-21	swapper/11	21:43:56	3
462908	99	461	19,29	cyclictest	0	-21	swapper/6	21:18:56	12
462885	99	459	8,29	cyclictest	0	-21	swapper/0	20:33:18	0
462933	99	457	456,1	cyclictest	679611	-21	kworker/12:1+i915-unordered	23:25:56	4
462908	99	457	15,29	cyclictest	0	-21	swapper/6	23:57:56	12
462941	99	456	454,2	cyclictest	735956	-21	kworker/14:0+i915-unordered	00:34:56	6
462918	99	456	11,29	cyclictest	0	-21	swapper/9	19:23:19	15
462910	99	456	18,30	cyclictest	0	-21	swapper/7	22:20:56	13
462908	99	456	454,2	cyclictest	0	-21	swapper/6	21:32:56	12
462908	99	456	18,29	cyclictest	0	-21	swapper/6	00:34:56	12
462929	99	455	452,2	cyclictest	466913	-21	kworker/11:1+events	19:44:18	3
462929	99	453	453,0	cyclictest	697	50	irq/159-i915	00:23:56	3
462891	99	453	452,1	cyclictest	0	-21	swapper/2	21:35:56	8
462929	99	452	449,2	cyclictest	549932	-21	kworker/11:0+events	20:48:18	3
462891	99	452	14,29	cyclictest	0	-21	swapper/2	22:28:56	8
462910	99	451	23,29	cyclictest	0	-21	swapper/7	19:08:17	13
462896	99	451	9,30	cyclictest	0	-21	swapper/3	19:42:56	9
462918	99	450	5,29	cyclictest	0	-21	swapper/9	20:50:18	15
462891	99	450	449,1	cyclictest	489385	-21	kworker/2:1+i915-unordered	19:35:57	8
462910	99	449	446,2	cyclictest	497838	-21	kworker/u64:8+events_unbound	19:45:56	13
462899	99	449	446,2	cyclictest	480506	-21	kworker/u64:6+events_unbound	20:05:56	10
462899	99	449	446,2	cyclictest	480506	-21	kworker/u64:6+events_unbound	20:05:56	10
462918	99	448	0,30	cyclictest	0	-21	swapper/9	22:43:38	15
462918	99	448	0,30	cyclictest	0	-21	swapper/9	22:43:38	15
462918	99	448	0,30	cyclictest	0	-21	swapper/9	00:06:40	15
462908	99	448	446,2	cyclictest	0	-21	swapper/6	22:10:56	12
462908	99	448	446,2	cyclictest	0	-21	swapper/6	21:38:56	12
462910	99	447	446,1	cyclictest	510950	-21	kworker/7:2+i915-unordered	20:43:56	13
462941	99	446	445,1	cyclictest	697	50	irq/159-i915	19:48:56	6
462918	99	444	0,30	cyclictest	0	-21	swapper/9	22:55:42	15
462918	99	444	0,30	cyclictest	0	-21	swapper/9	22:55:42	15
462933	99	442	441,1	cyclictest	0	-21	swapper/12	23:20:56	4
462899	99	442	0,29	cyclictest	0	-21	swapper/4	22:02:56	10
462885	99	442	24,416	cyclictest	0	-21	swapper/0	00:04:19	0
462941	99	441	439,2	cyclictest	697	50	irq/159-i915	21:17:56	6
462918	99	441	0,27	cyclictest	0	-21	swapper/9	20:00:56	15
462933	99	440	440,0	cyclictest	0	-21	swapper/12	23:32:30	4
462929	99	440	437,2	cyclictest	466913	-21	kworker/11:1+events	20:00:18	3
462923	99	440	23,416	cyclictest	0	-21	swapper/10	22:47:56	2
462923	99	440	23,416	cyclictest	0	-21	swapper/10	22:47:56	2
462910	99	440	440,0	cyclictest	714792	-21	kworker/7:0+i915-unordered	00:23:56	13
462938	99	439	25,414	cyclictest	0	-21	swapper/13	22:25:56	5
462899	99	439	19,419	cyclictest	0	-21	swapper/4	00:15:41	10
462923	99	438	16,421	cyclictest	0	-21	swapper/10	23:03:40	2
462899	99	438	437,1	cyclictest	0	-21	swapper/4	00:17:56	10
462891	99	438	24,413	cyclictest	0	-21	swapper/2	23:35:56	8
462899	99	437	434,2	cyclictest	567415	-21	kworker/4:2+i915-unordered	21:08:56	10
462896	99	437	21,415	cyclictest	0	-21	swapper/3	23:54:56	9
462888	99	437	16,420	cyclictest	0	-21	swapper/1	00:06:19	1
462941	99	436	435,1	cyclictest	697	50	irq/159-i915	21:04:56	6
462933	99	436	435,1	cyclictest	721981	-21	kworker/u64:9+events_unbound	00:18:56	4
462891	99	436	16,416	cyclictest	726562	2	sleep2	00:07:20	8
462904	99	435	20,414	cyclictest	0	-21	swapper/5	20:48:56	11
462899	99	434	433,1	cyclictest	683891	-21	kworker/4:0+i915-unordered	23:20:56	10
462891	99	434	20,413	cyclictest	0	-21	swapper/2	00:24:56	8
462941	99	433	17,415	cyclictest	0	-21	swapper/14	22:54:56	6
462941	99	433	17,415	cyclictest	0	-21	swapper/14	22:54:56	6
462908	99	433	20,412	cyclictest	0	-21	swapper/6	19:34:56	12
462938	99	432	19,412	cyclictest	0	-21	swapper/13	00:19:56	5
462899	99	432	431,1	cyclictest	0	-21	swapper/4	21:13:56	10
462896	99	432	15,416	cyclictest	0	-21	swapper/3	20:31:52	9
462888	99	432	17,414	cyclictest	0	-21	swapper/1	20:04:56	1
462888	99	432	17,414	cyclictest	0	-21	swapper/1	20:04:56	1
462885	99	432	12,418	cyclictest	0	-21	swapper/0	23:18:40	0
462941	99	431	431,0	cyclictest	697	50	irq/159-i915	20:40:56	6
462938	99	431	17,413	cyclictest	0	-21	swapper/13	21:02:56	5
462929	99	431	18,412	cyclictest	0	-21	swapper/11	23:49:56	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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