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 Jan 22, 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
658940	99	544	13,530	cyclictest	0	-21	swapper/7	19:49:45	13
658970	99	527	525,2	cyclictest	736801	-21	kworker/14:2+i915-unordered	21:20:45	6
658942	99	519	518,1	cyclictest	409735	-21	kworker/8:3+i915-unordered	19:09:45	14
658963	99	488	458,30	cyclictest	0	-21	swapper/12	23:22:45	4
658974	99	486	483,2	cyclictest	786899	-21	kworker/15:0+i915-unordered	21:45:45	7
658946	99	483	26,59	cyclictest	0	-21	swapper/9	22:30:07	15
658931	99	482	480,1	cyclictest	676762	-21	kworker/5:1+i915-unordered	19:36:45	11
658931	99	482	480,1	cyclictest	676762	-21	kworker/5:1+i915-unordered	19:36:45	11
658967	99	480	23,59	cyclictest	0	-21	swapper/13	20:46:28	5
658967	99	480	23,58	cyclictest	0	-21	swapper/13	20:24:30	5
658963	99	473	471,2	cyclictest	0	-21	swapper/12	20:27:45	4
658953	99	472	471,0	cyclictest	901181	-21	kworker/10:2+i915-unordered	00:07:45	2
658958	99	467	10,58	cyclictest	0	-21	swapper/11	00:33:07	3
658923	99	454	453,1	cyclictest	697	50	irq/159-i915	21:45:45	9
658935	99	453	26,30	cyclictest	0	-21	swapper/6	00:18:08	12
658935	99	453	25,29	cyclictest	0	-21	swapper/6	23:55:28	12
658935	99	452	24,30	cyclictest	0	-21	swapper/6	23:01:29	12
658958	99	451	3,59	cyclictest	0	-21	swapper/11	21:39:45	3
658967	99	450	24,30	cyclictest	0	-21	swapper/13	23:33:07	5
658967	99	450	24,30	cyclictest	0	-21	swapper/13	19:27:28	5
658958	99	450	22,30	cyclictest	0	-21	swapper/11	00:34:08	3
658940	99	450	24,30	cyclictest	0	-21	swapper/7	22:39:45	13
658940	99	450	23,30	cyclictest	0	-21	swapper/7	22:02:45	13
658935	99	450	23,30	cyclictest	0	-21	swapper/6	19:42:08	12
658935	99	450	23,30	cyclictest	0	-21	swapper/6	19:42:08	12
658935	99	449	23,30	cyclictest	0	-21	swapper/6	19:30:28	12
658940	99	448	24,30	cyclictest	0	-21	swapper/7	23:05:45	13
658935	99	448	22,29	cyclictest	0	-21	swapper/6	22:45:32	12
658967	99	447	20,29	cyclictest	0	-21	swapper/13	19:22:31	5
658935	99	446	20,29	cyclictest	0	-21	swapper/6	19:49:29	12
658926	99	446	445,1	cyclictest	871578	-21	kworker/4:1+i915-unordered	23:22:45	10
658974	99	445	444,1	cyclictest	685257	-21	kworker/15:0+i915-unordered	19:45:45	7
658967	99	445	26,29	cyclictest	0	-21	swapper/13	19:17:45	5
658926	99	445	443,1	cyclictest	727541	-21	kworker/4:1+i915-unordered	20:27:45	10
658946	99	443	18,30	cyclictest	0	-21	swapper/9	00:30:06	15
658926	99	442	442,0	cyclictest	0	-21	swapper/4	00:25:45	10
658923	99	442	441,1	cyclictest	697	50	irq/159-i915	19:09:45	9
658974	99	441	0,437	cyclictest	0	-21	swapper/15	23:30:19	7
658958	99	440	10,30	cyclictest	0	-21	swapper/11	20:50:28	3
658958	99	439	13,29	cyclictest	0	-21	swapper/11	19:35:31	3
658958	99	439	13,29	cyclictest	0	-21	swapper/11	19:35:31	3
658958	99	439	12,30	cyclictest	0	-21	swapper/11	23:58:31	3
658958	99	439	11,30	cyclictest	0	-21	swapper/11	23:26:29	3
658940	99	438	14,423	cyclictest	0	-21	swapper/7	21:13:40	13
658926	99	438	437,1	cyclictest	0	-21	swapper/4	22:06:45	10
658958	99	437	16,30	cyclictest	0	-21	swapper/11	22:17:29	3
658958	99	437	16,30	cyclictest	0	-21	swapper/11	22:17:29	3
658940	99	436	10,30	cyclictest	0	-21	swapper/7	22:27:45	13
658940	99	436	10,30	cyclictest	0	-21	swapper/7	22:27:45	13
658940	99	433	6,29	cyclictest	0	-21	swapper/7	22:49:45	13
658923	99	432	431,1	cyclictest	697	50	irq/159-i915	23:47:45	9
658974	99	431	430,1	cyclictest	685257	-21	kworker/15:0+i915-unordered	19:49:45	7
658942	99	430	9,29	cyclictest	0	-21	swapper/8	00:34:31	14
658940	99	430	4,424	cyclictest	0	-21	swapper/7	20:58:07	13
658940	99	430	0,29	cyclictest	0	-21	swapper/7	19:31:28	13
658919	99	430	0,3	cyclictest	0	-21	swapper/2	19:21:17	8
658942	99	429	5,30	cyclictest	0	-21	swapper/8	22:42:28	14
658940	99	427	3,29	cyclictest	0	-21	swapper/7	19:48:08	13
658940	99	427	1,29	cyclictest	0	-21	swapper/7	21:35:45	13
658931	99	425	423,1	cyclictest	867371	-21	kworker/5:0+events	23:29:08	11
658974	99	424	423,1	cyclictest	1802	-21	snmpd	22:21:56	7
658974	99	424	423,1	cyclictest	1802	-21	snmpd	22:21:56	7
658940	99	423	25,397	cyclictest	0	-21	swapper/7	23:18:31	13
658940	99	423	25,397	cyclictest	0	-21	swapper/7	21:49:29	13
658958	99	422	6,415	cyclictest	710460	-21	kworker/11:1+i915-unordered	20:14:45	3
658953	99	422	26,395	cyclictest	0	-21	swapper/10	19:10:45	2
658953	99	422	25,396	cyclictest	0	-21	swapper/10	23:12:45	2
658940	99	422	24,397	cyclictest	0	-21	swapper/7	22:07:30	13
658923	99	422	421,1	cyclictest	697	50	irq/159-i915	20:45:45	9
658912	99	422	25,396	cyclictest	0	-21	swapper/0	22:05:45	0
658963	99	421	23,397	cyclictest	0	-21	swapper/12	19:20:45	4
658923	99	420	420,0	cyclictest	0	-21	swapper/3	00:23:20	9
658916	99	420	24,394	cyclictest	0	-21	swapper/1	22:19:45	1
658916	99	420	24,394	cyclictest	0	-21	swapper/1	22:19:45	1
658970	99	419	23,395	cyclictest	0	-21	swapper/14	00:35:45	6
658970	99	419	22,395	cyclictest	0	-21	swapper/14	23:37:45	6
658970	99	419	22,395	cyclictest	0	-21	swapper/14	21:40:45	6
658926	99	419	415,4	cyclictest	1802	-21	snmpd	22:16:41	10
658926	99	419	415,4	cyclictest	1802	-21	snmpd	22:16:41	10
658923	99	419	419,0	cyclictest	697	50	irq/159-i915	00:07:45	9
658912	99	419	417,1	cyclictest	718948	-21	kworker/0:5+events	21:03:30	0
658931	99	418	414,3	cyclictest	782651	-21	kworker/5:1+pm	22:16:41	11
658931	99	418	414,3	cyclictest	782651	-21	kworker/5:1+pm	22:16:41	11
658919	99	418	418,0	cyclictest	0	-21	swapper/2	00:07:45	8
658953	99	417	416,1	cyclictest	0	-21	swapper/10	21:31:19	2
658931	99	416	414,1	cyclictest	782651	-21	kworker/5:1+i915-unordered	22:30:45	11
658931	99	416	17,396	cyclictest	0	-21	swapper/5	00:03:40	11
658923	99	416	415,1	cyclictest	697	50	irq/159-i915	21:20:45	9
658963	99	415	414,1	cyclictest	875709	-21	kworker/12:0+pm	23:29:43	4
658940	99	414	16,395	cyclictest	0	-21	swapper/7	20:19:08	13
658931	99	414	20,394	cyclictest	0	-21	swapper/5	21:23:40	11
658958	99	413	413,0	cyclictest	858900	-21	kworker/11:2+i915-unordered	23:15:45	3
658946	99	413	19,394	cyclictest	0	-21	swapper/9	19:24:09	15
658940	99	413	14,395	cyclictest	0	-21	swapper/7	00:28:40	13
658923	99	413	413,0	cyclictest	697	50	irq/159-i915	00:25:45	9
658963	99	411	14,396	cyclictest	0	-21	swapper/12	00:27:45	4
658926	99	411	18,392	cyclictest	0	-21	swapper/4	00:22:45	10
658963	99	410	15,394	cyclictest	0	-21	swapper/12	22:01:45	4
658963	99	410	14,395	cyclictest	0	-21	swapper/12	22:57:45	4
658953	99	410	14,394	cyclictest	0	-21	swapper/10	20:04:45	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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