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 Tue Apr 21, 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
555963	99	699	301,397	cyclictest	0	-21	swapper/7	21:30:20	13
555954	99	681	679,2	cyclictest	0	-21	swapper/5	22:21:41	11
555974	99	531	30,500	cyclictest	0	-21	swapper/10	00:04:57	2
555935	99	508	25,42	cyclictest	0	-21	swapper/0	19:30:57	0
555992	99	506	504,2	cyclictest	552805	-21	kworker/14:3+i915-unordered	19:09:57	6
555974	99	500	499,0	cyclictest	584662	-21	kworker/10:0+i915-unordered	19:42:57	2
555958	99	499	469,30	cyclictest	0	-21	swapper/6	19:09:57	12
555988	99	482	481,1	cyclictest	613064	-21	kworker/13:2+i915-unordered	20:21:57	5
555988	99	475	445,30	cyclictest	0	-21	swapper/13	00:05:57	5
555988	99	474	472,2	cyclictest	649991	-21	kworker/13:1+i915-unordered	21:10:57	5
555954	99	469	24,30	cyclictest	0	-21	swapper/5	21:17:19	11
555954	99	467	22,29	cyclictest	0	-21	swapper/5	20:57:18	11
555954	99	467	22,29	cyclictest	0	-21	swapper/5	20:57:18	11
555954	99	464	18,30	cyclictest	0	-21	swapper/5	19:38:20	11
555996	99	463	434,29	cyclictest	0	-21	swapper/15	20:50:57	7
555996	99	463	434,29	cyclictest	0	-21	swapper/15	20:50:57	7
555986	99	461	460,1	cyclictest	713464	-21	kworker/12:1+i915-unordered	22:32:57	4
555996	99	459	458,1	cyclictest	673429	-21	kworker/15:1+i915-unordered	22:00:57	7
555944	99	459	457,1	cyclictest	765848	-21	kworker/2:1+i915-unordered	00:04:57	8
555954	99	457	10,30	cyclictest	0	-21	swapper/5	20:18:43	11
555950	99	455	425,30	cyclictest	0	-21	swapper/4	22:32:57	10
555996	99	452	451,1	cyclictest	0	-21	swapper/15	23:36:57	7
555996	99	452	451,1	cyclictest	0	-21	swapper/15	23:36:57	7
555946	99	452	448,3	cyclictest	1818	-21	snmpd	21:34:10	9
555974	99	451	25,425	cyclictest	115	-21	ksoftirqd/10	23:45:57	2
555974	99	451	25,425	cyclictest	115	-21	ksoftirqd/10	23:45:57	2
555996	99	449	419,30	cyclictest	0	-21	swapper/15	20:24:57	7
555954	99	448	26,29	cyclictest	0	-21	swapper/5	22:28:19	11
555954	99	448	25,29	cyclictest	0	-21	swapper/5	23:38:42	11
555954	99	448	25,29	cyclictest	0	-21	swapper/5	23:38:42	11
555981	99	447	445,1	cyclictest	0	-21	swapper/11	21:34:10	3
555954	99	447	22,29	cyclictest	0	-21	swapper/5	23:25:19	11
555939	99	447	0,29	cyclictest	0	-21	swapper/1	22:19:20	1
555963	99	446	445,1	cyclictest	640961	-21	kworker/7:1+i915-unordered	20:50:57	13
555963	99	446	445,1	cyclictest	640961	-21	kworker/7:1+i915-unordered	20:50:57	13
555954	99	446	23,29	cyclictest	0	-21	swapper/5	21:25:20	11
555954	99	446	23,29	cyclictest	0	-21	swapper/5	00:30:18	11
555954	99	446	22,29	cyclictest	0	-21	swapper/5	21:11:19	11
555954	99	445	22,30	cyclictest	0	-21	swapper/5	00:17:20	11
555965	99	444	3,3	cyclictest	0	-21	swapper/8	21:23:10	14
555939	99	444	24,419	cyclictest	0	-21	swapper/1	22:05:20	1
555981	99	443	0,0	cyclictest	0	-21	swapper/11	22:53:52	3
555939	99	443	24,418	cyclictest	0	-21	swapper/1	23:15:18	1
555996	99	442	440,1	cyclictest	673429	-21	kworker/15:1+i915-unordered	22:47:57	7
555963	99	442	22,419	cyclictest	0	-21	swapper/7	22:47:57	13
555939	99	441	19,421	cyclictest	0	-21	swapper/1	20:01:39	1
555963	99	440	410,30	cyclictest	0	-21	swapper/7	22:00:57	13
555954	99	440	16,30	cyclictest	0	-21	swapper/5	23:20:18	11
555954	99	440	14,30	cyclictest	0	-21	swapper/5	21:00:18	11
555954	99	440	14,30	cyclictest	0	-21	swapper/5	21:00:18	11
555939	99	440	21,418	cyclictest	0	-21	swapper/1	20:57:41	1
555939	99	440	21,418	cyclictest	0	-21	swapper/1	20:57:41	1
555992	99	439	438,1	cyclictest	0	-21	swapper/14	21:10:57	6
555939	99	439	18,420	cyclictest	0	-21	swapper/1	22:51:42	1
555954	99	437	12,28	cyclictest	0	-21	swapper/5	21:38:42	11
555939	99	437	18,418	cyclictest	0	-21	swapper/1	19:39:43	1
555954	99	436	434,2	cyclictest	785884	-21	kworker/5:2+i915-unordered	00:05:57	11
555963	99	435	433,2	cyclictest	769870	-21	kworker/7:0+i915-unordered	23:36:57	13
555963	99	435	433,2	cyclictest	769870	-21	kworker/7:0+i915-unordered	23:36:57	13
555954	99	435	21,413	cyclictest	0	-21	swapper/5	20:07:57	11
555954	99	435	13,421	cyclictest	0	-21	swapper/5	21:29:19	11
555996	99	434	433,1	cyclictest	489871	-21	kworker/15:5+i915-unordered	19:36:57	7
555963	99	434	432,2	cyclictest	605035	-21	kworker/7:1+i915-unordered	20:24:57	13
555958	99	433	432,1	cyclictest	697	50	irq/159-i915	21:10:57	12
555944	99	433	21,412	cyclictest	0	-21	swapper/2	19:51:57	8
555992	99	432	430,2	cyclictest	0	-21	swapper/14	23:22:57	6
555944	99	432	428,3	cyclictest	621207	-21	kworker/2:0+pm	20:54:09	8
555944	99	432	428,3	cyclictest	621207	-21	kworker/2:0+pm	20:54:09	8
555988	99	431	400,31	cyclictest	0	-21	swapper/13	19:30:57	5
555986	99	431	400,30	cyclictest	0	-21	swapper/12	00:34:57	4
555939	99	431	5,29	cyclictest	0	-21	swapper/1	00:31:20	1
555939	99	430	5,29	cyclictest	0	-21	swapper/1	22:16:18	1
555992	99	429	427,1	cyclictest	0	-21	swapper/14	00:05:57	6
555992	99	429	426,2	cyclictest	600780	-21	kworker/14:1+i915-unordered	20:04:57	6
555988	99	429	14,414	cyclictest	0	-21	swapper/13	20:12:57	5
555963	99	429	18,410	cyclictest	0	-21	swapper/7	23:10:57	13
555935	99	429	13,416	cyclictest	0	-21	swapper/0	20:14:20	0
555944	99	428	428,0	cyclictest	0	-21	swapper/2	19:42:57	8
555986	99	427	422,3	cyclictest	1818	-21	snmpd	00:10:09	4
555988	99	426	12,413	cyclictest	0	-21	swapper/13	20:17:57	5
555968	99	426	425,1	cyclictest	1818	-21	snmpd	19:49:53	15
555965	99	426	425,1	cyclictest	697	50	irq/159-i915	19:34:57	14
555965	99	426	0,425	cyclictest	0	-21	swapper/8	22:55:57	14
555950	99	426	425,1	cyclictest	803427	-21	kworker/4:1+i915-unordered	00:34:57	10
555939	99	426	13,0	cyclictest	0	-21	swapper/1	21:51:57	1
555974	99	425	422,2	cyclictest	693346	-21	kworker/10:1+i915-unordered	22:05:57	2
555958	99	425	424,1	cyclictest	697	50	irq/159-i915	23:22:57	12
555944	99	425	7,28	cyclictest	0	-21	swapper/2	00:31:57	8
555974	99	423	28,394	cyclictest	0	-21	swapper/10	00:37:57	2
555958	99	423	421,1	cyclictest	697	50	irq/159-i915	00:04:57	12
555958	99	422	421,1	cyclictest	697	50	irq/159-i915	20:04:57	12
555939	99	422	25,395	cyclictest	0	-21	swapper/1	22:01:42	1
555939	99	422	24,397	cyclictest	0	-21	swapper/1	21:36:18	1
555996	99	421	417,3	cyclictest	189056	-21	gnome-shell	21:26:57	7
555988	99	421	25,395	cyclictest	0	-21	swapper/13	20:58:53	5
555988	99	421	25,395	cyclictest	0	-21	swapper/13	20:58:53	5
555965	99	421	420,1	cyclictest	697	50	irq/159-i915	19:30:57	14
555939	99	421	23,397	cyclictest	0	-21	swapper/1	00:24:43	1
555939	99	421	0,28	cyclictest	0	-21	swapper/1	23:35:20	1
555939	99	421	0,28	cyclictest	0	-21	swapper/1	23:35:20	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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