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 Aug 20, 2026 00:43:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2485350	99	518	10,507	cyclictest	0	-21	swapper/2	20:52:11	8
2485393	99	510	480,30	cyclictest	0	-21	swapper/12	23:38:10	4
2485359	99	509	508,1	cyclictest	2707081	-21	kworker/4:0+i915-unordered	23:38:10	10
2485384	99	500	499,1	cyclictest	2554396	-21	kworker/10:2+i915-unordered	20:52:11	2
2485384	99	494	492,2	cyclictest	0	-21	swapper/10	19:51:11	2
2485346	99	493	2,490	cyclictest	0	-21	swapper/1	21:04:11	1
2485346	99	477	13,463	cyclictest	0	-21	swapper/1	00:14:10	1
2485342	99	476	12,463	cyclictest	0	-21	swapper/0	19:51:11	0
2485354	99	475	0,57	cyclictest	0	-21	swapper/3	23:46:56	9
2485346	99	475	474,1	cyclictest	0	-21	swapper/1	19:53:11	1
2485384	99	472	22,30	cyclictest	0	-21	swapper/10	21:06:32	2
2485401	99	468	20,30	cyclictest	0	-21	swapper/14	22:52:54	6
2485378	99	468	21,29	cyclictest	0	-21	swapper/9	20:40:06	15
2485401	99	464	23,29	cyclictest	0	-21	swapper/14	20:10:06	6
2485346	99	458	456,1	cyclictest	0	-21	swapper/1	20:01:11	1
2485396	99	455	453,2	cyclictest	1818	-21	snmpd	22:07:08	5
2485363	99	452	451,1	cyclictest	0	-21	swapper/5	00:14:10	11
2485401	99	451	4,29	cyclictest	0	-21	swapper/14	19:10:56	6
2485401	99	451	4,29	cyclictest	0	-21	swapper/14	19:10:56	6
2485346	99	451	450,1	cyclictest	0	-21	swapper/1	21:18:11	1
2485370	99	450	448,2	cyclictest	2646755	-21	kworker/7:0+i915-unordered	22:37:11	13
2485346	99	450	446,3	cyclictest	0	-21	swapper/1	23:01:07	1
2485354	99	449	0,30	cyclictest	0	-21	swapper/3	23:59:32	9
2485354	99	449	0,29	cyclictest	0	-21	swapper/3	22:35:55	9
2485354	99	448	0,30	cyclictest	0	-21	swapper/3	21:34:32	9
2485354	99	448	0,29	cyclictest	0	-21	swapper/3	21:39:54	9
2485378	99	446	0,30	cyclictest	0	-21	swapper/9	20:20:06	15
2485346	99	446	445,1	cyclictest	0	-21	swapper/1	00:24:10	1
2485378	99	444	444,0	cyclictest	2570516	-21	kworker/9:0+i915-unordered	21:04:11	15
2485365	99	443	442,1	cyclictest	0	-21	swapper/6	22:28:11	12
2485363	99	442	412,30	cyclictest	0	-21	swapper/5	21:18:11	11
2485401	99	441	440,1	cyclictest	2650888	-21	kworker/14:0+i915-unordered	22:28:11	6
2485396	99	441	440,1	cyclictest	2727155	-21	kworker/13:0+i915-unordered	00:14:10	5
2485384	99	441	22,417	cyclictest	0	-21	swapper/10	20:28:33	2
2485384	99	441	21,0	cyclictest	0	-21	swapper/10	19:31:32	2
2485378	99	439	438,1	cyclictest	2514305	-21	kworker/9:5+i915-unordered	20:01:11	15
2485378	99	438	22,414	cyclictest	0	-21	swapper/9	00:25:06	15
2485405	99	437	23,413	cyclictest	0	-21	swapper/15	00:33:10	7
2485405	99	437	23,413	cyclictest	0	-21	swapper/15	00:33:10	7
2485401	99	437	436,1	cyclictest	2630791	-21	kworker/14:0+pm	22:07:08	6
2485378	99	437	432,2	cyclictest	2570516	-21	kworker/9:0+pm	21:06:43	15
2485378	99	437	23,413	cyclictest	0	-21	swapper/9	20:32:11	15
2485363	99	437	407,30	cyclictest	0	-21	swapper/5	00:24:10	11
2485346	99	437	437,0	cyclictest	0	-21	swapper/1	21:49:11	1
2485378	99	436	24,411	cyclictest	0	-21	swapper/9	22:18:10	15
2485378	99	436	21,414	cyclictest	0	-21	swapper/9	23:19:10	15
2485373	99	436	433,2	cyclictest	2530290	-21	kworker/8:0+pm	19:59:08	14
2485378	99	435	22,412	cyclictest	0	-21	swapper/9	22:08:10	15
2485388	99	434	432,1	cyclictest	1818	-21	snmpd	23:43:44	3
2485396	99	433	431,2	cyclictest	2590691	-21	kworker/13:2+i915-unordered	21:18:11	5
2485365	99	431	430,1	cyclictest	2643902	-21	kworker/6:1+i915-unordered	22:34:11	12
2485405	99	430	18,412	cyclictest	0	-21	swapper/15	22:31:10	7
2485378	99	430	17,413	cyclictest	0	-21	swapper/9	23:51:10	15
2485346	99	430	15,414	cyclictest	0	-21	swapper/1	20:59:11	1
2485342	99	430	16,413	cyclictest	0	-21	swapper/0	00:06:56	0
2485354	99	429	13,415	cyclictest	0	-21	swapper/3	20:41:11	9
2485346	99	429	14,414	cyclictest	0	-21	swapper/1	23:54:10	1
2485346	99	428	13,414	cyclictest	0	-21	swapper/1	21:12:11	1
2485346	99	428	12,415	cyclictest	0	-21	swapper/1	22:14:10	1
2485396	99	427	426,1	cyclictest	2735452	-21	kworker/13:1+i915-unordered	00:24:10	5
2485378	99	427	426,1	cyclictest	697	50	irq/159-i915	00:14:10	15
2485370	99	427	12,414	cyclictest	0	-21	swapper/7	19:13:11	13
2485370	99	427	12,414	cyclictest	0	-21	swapper/7	19:13:11	13
2485350	99	427	9,417	cyclictest	0	-21	swapper/2	20:49:11	8
2485378	99	426	6,419	cyclictest	0	-21	swapper/9	21:59:54	15
2485378	99	426	6,419	cyclictest	0	-21	swapper/9	21:59:54	15
2485370	99	426	15,410	cyclictest	0	-21	swapper/7	19:47:11	13
2485401	99	425	8,416	cyclictest	0	-21	swapper/14	19:16:11	6
2485401	99	425	8,416	cyclictest	0	-21	swapper/14	19:16:11	6
2485378	99	425	425,0	cyclictest	2514305	-21	kworker/9:5+i915-unordered	19:53:11	15
2485388	99	424	4,419	cyclictest	0	-21	swapper/11	22:53:32	3
2485350	99	424	422,2	cyclictest	0	-21	swapper/2	19:41:22	8
2485346	99	424	423,1	cyclictest	0	-21	swapper/1	00:03:10	1
2485388	99	423	421,1	cyclictest	2562373	-21	kworker/11:2+i915-unordered	20:39:11	3
2485388	99	423	418,2	cyclictest	2566574	-21	kworker/11:0+events	20:56:33	3
2485354	99	423	422,1	cyclictest	0	-21	swapper/3	19:21:46	9
2485354	99	423	422,1	cyclictest	0	-21	swapper/3	19:21:46	9
2485393	99	422	419,3	cyclictest	2598627	-21	kworker/12:0+events	21:28:54	4
2485393	99	422	419,2	cyclictest	2731222	-21	kworker/12:2+events	00:23:33	4
2485393	99	422	419,2	cyclictest	2534262	-21	kworker/12:1+events	20:20:55	4
2485393	99	422	1,420	cyclictest	0	-21	swapper/12	23:58:33	4
2485393	99	422	0,421	cyclictest	0	-21	swapper/12	22:55:56	4
2485388	99	422	419,2	cyclictest	2586519	-21	kworker/11:2+events	21:19:34	3
2485388	99	422	418,3	cyclictest	2610576	-21	kworker/11:2+events	21:39:54	3
2485388	99	422	418,2	cyclictest	2550484	-21	kworker/11:1+events	20:44:55	3
2485370	99	422	9,412	cyclictest	0	-21	swapper/7	23:03:10	13
2485363	99	422	9,413	cyclictest	0	-21	swapper/5	20:21:11	11
2485393	99	421	419,2	cyclictest	2618724	-21	kworker/12:0+events	22:24:53	4
2485393	99	421	419,2	cyclictest	2534262	-21	kworker/12:1+events	20:09:56	4
2485393	99	421	418,3	cyclictest	2743268	-21	kworker/12:0+events	00:30:56	4
2485393	99	421	418,3	cyclictest	2743268	-21	kworker/12:0+events	00:30:56	4
2485393	99	421	418,2	cyclictest	2691030	-21	kworker/12:0+pm	23:43:44	4
2485393	99	421	418,2	cyclictest	2647003	-21	kworker/12:1+events	23:16:56	4
2485393	99	421	418,2	cyclictest	2568494	-21	kworker/12:2+events	21:18:55	4
2485393	99	421	0,420	cyclictest	0	-21	swapper/12	23:13:32	4
2485393	99	421	0,420	cyclictest	0	-21	swapper/12	22:27:33	4
2485393	99	421	0,420	cyclictest	0	-21	swapper/12	21:11:33	4
2485388	99	421	418,2	cyclictest	2735582	-21	kworker/11:1+events	00:18:34	3
2485388	99	421	418,2	cyclictest	2658785	-21	kworker/11:1+events	23:34:33	3
2485388	99	421	418,2	cyclictest	2658785	-21	kworker/11:1+events	23:11:53	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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