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 Mar 03, 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
587118	99	545	0,45	cyclictest	0	-21	swapper/12	22:45:14	4
587076	99	532	7,27	cyclictest	0	-21	swapper/2	20:05:15	8
587118	99	526	26,499	cyclictest	0	-21	swapper/12	19:57:15	4
587105	99	520	21,498	cyclictest	0	-21	swapper/10	21:26:15	2
587110	99	506	23,28	cyclictest	0	-21	swapper/11	21:10:15	3
587110	99	506	23,28	cyclictest	0	-21	swapper/11	21:10:15	3
587110	99	495	493,2	cyclictest	805021	-21	kworker/11:2+i915-unordered	00:05:14	3
587110	99	495	493,2	cyclictest	805021	-21	kworker/11:2+i915-unordered	00:05:14	3
587121	99	494	492,2	cyclictest	599948	-21	kworker/13:1+i915-unordered	19:41:15	5
587076	99	493	24,468	cyclictest	0	-21	swapper/2	20:03:15	8
587110	99	492	490,2	cyclictest	664103	-21	kworker/11:2+i915-unordered	20:57:15	3
587105	99	491	491,0	cyclictest	704289	-21	kworker/10:2+i915-unordered	21:36:15	2
587118	99	486	18,467	cyclictest	0	-21	swapper/12	19:30:15	4
587105	99	486	486,0	cyclictest	736531	-21	kworker/10:1+i915-unordered	22:28:14	2
587110	99	485	28,456	cyclictest	0	-21	swapper/11	22:48:14	3
587110	99	482	4,477	cyclictest	0	-21	swapper/11	00:36:14	3
587087	99	482	481,1	cyclictest	0	-21	swapper/5	19:41:15	11
587110	99	477	477,0	cyclictest	0	-21	swapper/11	20:05:15	3
587110	99	476	476,0	cyclictest	0	-21	swapper/11	19:30:15	3
587110	99	468	28,439	cyclictest	0	-21	swapper/11	20:20:15	3
587125	99	465	463,2	cyclictest	648189	-21	kworker/14:2+i915-unordered	20:28:15	6
587121	99	464	463,1	cyclictest	644215	-21	kworker/13:2+i915-unordered	20:20:15	5
587083	99	462	461,1	cyclictest	756736	-21	kworker/4:1+i915-unordered	22:45:14	10
587087	99	461	460,1	cyclictest	800962	-21	kworker/5:1+i915-unordered	23:36:14	11
587087	99	455	454,1	cyclictest	744833	-21	kworker/5:1+i915-unordered	22:48:14	11
587081	99	454	395,59	cyclictest	0	-21	swapper/3	19:11:58	9
587076	99	454	25,30	cyclictest	0	-21	swapper/2	21:36:38	8
587076	99	450	25,29	cyclictest	0	-21	swapper/2	20:56:38	8
587110	99	449	8,439	cyclictest	0	-21	swapper/11	23:36:14	3
587081	99	449	449,0	cyclictest	697	50	irq/159-i915	22:28:14	9
587105	99	447	447,0	cyclictest	628831	-21	kworker/10:1+i915-unordered	20:05:15	2
587121	99	444	442,2	cyclictest	0	-21	swapper/13	23:36:14	5
587076	99	444	444,0	cyclictest	0	-21	swapper/2	21:43:15	8
587076	99	444	442,1	cyclictest	768692	-21	kworker/2:2+i915-unordered	23:01:14	8
587081	99	443	442,1	cyclictest	697	50	irq/159-i915	19:21:15	9
587083	99	442	441,1	cyclictest	619899	-21	kworker/4:1+i915-unordered	19:57:15	10
587081	99	442	441,1	cyclictest	697	50	irq/159-i915	21:10:15	9
587081	99	442	441,1	cyclictest	697	50	irq/159-i915	21:10:15	9
587095	99	441	20,29	cyclictest	0	-21	swapper/7	20:38:14	13
587081	99	440	439,1	cyclictest	697	50	irq/159-i915	22:45:14	9
587083	99	439	19,30	cyclictest	0	-21	swapper/4	21:18:14	10
587121	99	438	435,2	cyclictest	0	-21	swapper/13	22:48:14	5
587081	99	438	437,1	cyclictest	697	50	irq/159-i915	21:26:15	9
587076	99	437	10,30	cyclictest	0	-21	swapper/2	23:54:36	8
587081	99	435	15,30	cyclictest	0	-21	swapper/3	21:38:14	9
587102	99	434	18,30	cyclictest	0	-21	swapper/9	19:58:15	15
587076	99	434	7,30	cyclictest	0	-21	swapper/2	23:19:36	8
587091	99	433	432,1	cyclictest	0	-21	swapper/6	20:28:15	12
587073	99	433	6,30	cyclictest	0	-21	swapper/1	21:43:00	1
587118	99	432	432,0	cyclictest	0	-21	swapper/12	23:55:58	4
587095	99	432	13,30	cyclictest	0	-21	swapper/7	19:21:15	13
587073	99	431	9,30	cyclictest	0	-21	swapper/1	22:19:00	1
587073	99	431	4,30	cyclictest	0	-21	swapper/1	21:07:37	1
587073	99	431	4,30	cyclictest	0	-21	swapper/1	21:07:37	1
587081	99	430	429,1	cyclictest	697	50	irq/159-i915	00:05:14	9
587081	99	430	429,1	cyclictest	697	50	irq/159-i915	00:05:14	9
587073	99	430	6,29	cyclictest	0	-21	swapper/1	20:34:59	1
587073	99	430	4,29	cyclictest	0	-21	swapper/1	20:01:00	1
587095	99	429	8,30	cyclictest	0	-21	swapper/7	22:32:14	13
587076	99	429	1,29	cyclictest	0	-21	swapper/2	22:39:37	8
587073	99	429	6,29	cyclictest	0	-21	swapper/1	23:33:59	1
587073	99	429	5,29	cyclictest	0	-21	swapper/1	20:20:59	1
587100	99	428	427,1	cyclictest	0	-21	swapper/8	21:44:37	14
587076	99	428	0,30	cyclictest	0	-21	swapper/2	00:31:58	8
587128	99	427	424,2	cyclictest	841094	-21	kworker/u64:1+events_unbound	00:23:37	7
587100	99	427	425,1	cyclictest	0	-21	swapper/8	23:57:36	14
587083	99	427	5,29	cyclictest	0	-21	swapper/4	23:53:14	10
587081	99	427	426,1	cyclictest	697	50	irq/159-i915	20:57:15	9
587076	99	427	0,30	cyclictest	0	-21	swapper/2	21:06:38	8
587076	99	427	0,30	cyclictest	0	-21	swapper/2	21:06:38	8
587076	99	426	0,30	cyclictest	0	-21	swapper/2	21:29:59	8
587076	99	426	0,30	cyclictest	0	-21	swapper/2	20:31:36	8
587073	99	426	423,3	cyclictest	1801	-21	snmpd	22:36:10	1
587125	99	425	423,1	cyclictest	680157	-21	kworker/u64:1+events_unbound	21:25:37	6
587110	99	425	26,398	cyclictest	0	-21	swapper/11	23:52:37	3
587073	99	425	27,397	cyclictest	0	-21	swapper/1	00:13:37	1
587121	99	424	422,1	cyclictest	0	-21	swapper/13	00:32:14	5
587118	99	424	5,418	cyclictest	0	-21	swapper/12	21:04:38	4
587118	99	424	5,418	cyclictest	0	-21	swapper/12	21:04:38	4
587110	99	424	25,398	cyclictest	0	-21	swapper/11	22:18:00	3
587081	99	424	423,1	cyclictest	697	50	irq/159-i915	19:41:15	9
587073	99	424	5,28	cyclictest	0	-21	swapper/1	19:36:15	1
587073	99	424	26,397	cyclictest	0	-21	swapper/1	19:27:37	1
587102	99	423	1,30	cyclictest	0	-21	swapper/9	19:17:15	15
587100	99	423	423,0	cyclictest	0	-21	swapper/8	19:41:37	14
587087	99	423	422,1	cyclictest	0	-21	swapper/5	20:20:15	11
587076	99	423	24,398	cyclictest	0	-21	swapper/2	19:28:59	8
587076	99	423	24,397	cyclictest	0	-21	swapper/2	21:24:00	8
587076	99	423	0,30	cyclictest	0	-21	swapper/2	21:56:38	8
587110	99	422	421,0	cyclictest	0	-21	swapper/11	20:03:15	3
587095	99	422	3,30	cyclictest	0	-21	swapper/7	00:21:14	13
587095	99	422	24,397	cyclictest	86	1	rcuc/7	19:29:10	13
587091	99	422	422,0	cyclictest	0	-21	swapper/6	21:25:37	12
587083	99	422	0,30	cyclictest	0	-21	swapper/4	19:42:15	10
587076	99	422	24,396	cyclictest	0	-21	swapper/2	19:41:00	8
587076	99	422	23,398	cyclictest	0	-21	swapper/2	22:16:38	8
587076	99	422	23,397	cyclictest	0	-21	swapper/2	22:12:38	8
587076	99	422	22,399	cyclictest	0	-21	swapper/2	22:22:36	8
587076	99	422	22,399	cyclictest	0	-21	swapper/2	19:32:37	8
587076	99	422	21,397	cyclictest	0	-21	swapper/2	20:45:37	8
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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