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 Wed Apr 29, 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
283158	99	516	514,2	cyclictest	497373	-21	kworker/5:1+i915-unordered	23:40:42	11
283158	99	510	4,505	cyclictest	70	-21	ksoftirqd/5	20:59:43	11
283176	99	492	491,1	cyclictest	457156	-21	kworker/10:2+i915-unordered	22:47:43	2
283189	99	491	490,1	cyclictest	436912	-21	kworker/12:2+i915-unordered	22:24:43	4
283147	99	491	490,1	cyclictest	0	-21	swapper/2	22:47:43	8
283147	99	481	479,2	cyclictest	497442	-21	kworker/2:2+i915-unordered	23:34:43	8
283147	99	481	451,30	cyclictest	0	-21	swapper/2	22:36:43	8
283196	99	464	18,29	cyclictest	0	-21	swapper/14	19:47:27	6
283199	99	463	16,30	cyclictest	0	-21	swapper/15	20:34:04	7
283196	99	460	13,29	cyclictest	0	-21	swapper/14	23:43:04	6
283156	99	459	457,2	cyclictest	324409	-21	kworker/4:0+i915-unordered	20:07:43	10
283152	99	459	16,29	cyclictest	0	-21	swapper/3	22:14:42	9
283196	99	458	11,30	cyclictest	0	-21	swapper/14	21:36:29	6
283196	99	457	7,30	cyclictest	0	-21	swapper/14	20:55:05	6
283196	99	457	12,30	cyclictest	0	-21	swapper/14	19:54:27	6
283176	99	456	454,2	cyclictest	413146	-21	kworker/10:0+i915-unordered	22:36:43	2
283156	99	456	455,1	cyclictest	0	-21	swapper/4	22:24:43	10
283147	99	456	456,0	cyclictest	0	-21	swapper/2	22:02:43	8
283176	99	455	6,30	cyclictest	0	-21	swapper/10	21:48:38	2
283196	99	452	5,30	cyclictest	0	-21	swapper/14	22:30:05	6
283171	99	452	451,1	cyclictest	697	50	irq/159-i915	22:24:43	14
283176	99	451	420,31	cyclictest	0	-21	swapper/10	23:34:43	2
283158	99	451	451,0	cyclictest	0	-21	swapper/5	00:01:42	11
283158	99	451	451,0	cyclictest	0	-21	swapper/5	00:01:42	11
283144	99	451	0,450	cyclictest	0	-21	swapper/1	20:29:28	1
283171	99	450	449,1	cyclictest	525554	-21	kworker/8:0+i915-unordered	00:16:42	14
283199	99	449	22,30	cyclictest	0	-21	swapper/15	00:16:26	7
283199	99	448	22,30	cyclictest	0	-21	swapper/15	19:24:28	7
283193	99	448	8,29	cyclictest	0	-21	swapper/13	22:04:43	5
283166	99	448	445,3	cyclictest	1818	-21	snmpd	23:30:55	13
283158	99	448	3,29	cyclictest	0	-21	swapper/5	21:05:43	11
283140	99	448	447,1	cyclictest	0	-21	swapper/0	22:24:43	0
283193	99	447	21,30	cyclictest	0	-21	swapper/13	21:52:26	5
283144	99	446	443,2	cyclictest	316107	-21	kworker/u64:6+events_unbound	20:07:04	1
283199	99	445	19,29	cyclictest	0	-21	swapper/15	00:00:27	7
283199	99	445	19,29	cyclictest	0	-21	swapper/15	00:00:27	7
283196	99	445	20,29	cyclictest	0	-21	swapper/14	19:21:04	6
283176	99	445	0,0	cyclictest	469089	-21	kworker/10:1+i915-unordered	23:04:43	2
283199	99	444	18,29	cyclictest	0	-21	swapper/15	23:51:27	7
283196	99	444	17,30	cyclictest	0	-21	swapper/14	21:20:03	6
283193	99	444	17,29	cyclictest	0	-21	swapper/13	23:36:26	5
283193	99	443	17,29	cyclictest	0	-21	swapper/13	19:18:25	5
283173	99	443	21,421	cyclictest	0	-21	swapper/9	21:41:25	15
283152	99	443	443,0	cyclictest	0	-21	swapper/3	22:59:05	9
283199	99	442	22,418	cyclictest	0	-21	swapper/15	21:14:27	7
283199	99	442	22,418	cyclictest	0	-21	swapper/15	21:14:27	7
283173	99	442	22,419	cyclictest	0	-21	swapper/9	23:24:04	15
283173	99	442	19,422	cyclictest	0	-21	swapper/9	19:49:06	15
283152	99	442	442,0	cyclictest	0	-21	swapper/3	23:19:43	9
283193	99	441	441,0	cyclictest	356611	-21	kworker/13:1+i915-unordered	20:59:43	5
283152	99	441	21,419	cyclictest	0	-21	swapper/3	00:14:04	9
283196	99	440	15,29	cyclictest	0	-21	swapper/14	19:18:04	6
283193	99	440	22,418	cyclictest	0	-21	swapper/13	00:15:04	5
283173	99	440	439,0	cyclictest	0	-21	swapper/9	22:04:04	15
283171	99	440	437,2	cyclictest	423707	-21	kworker/u64:9+events_unbound	22:10:04	14
283196	99	439	18,418	cyclictest	0	-21	swapper/14	23:46:26	6
283196	99	439	15,28	cyclictest	0	-21	swapper/14	21:52:05	6
283152	99	439	16,422	cyclictest	0	-21	swapper/3	21:31:03	9
283199	99	438	436,2	cyclictest	344665	-21	kworker/15:0+i915-unordered	20:29:43	7
283199	99	438	16,30	cyclictest	0	-21	swapper/15	22:22:25	7
283199	99	438	13,29	cyclictest	0	-21	swapper/15	23:37:26	7
283173	99	438	18,419	cyclictest	0	-21	swapper/9	23:14:05	15
283171	99	438	438,0	cyclictest	697	50	irq/159-i915	20:59:43	14
283171	99	438	437,1	cyclictest	0	-21	swapper/8	20:56:28	14
283147	99	438	25,413	cyclictest	0	-21	swapper/2	00:10:42	8
283199	99	437	19,0	cyclictest	0	-21	swapper/15	22:15:26	7
283196	99	437	16,418	cyclictest	0	-21	swapper/14	21:08:27	6
283173	99	437	17,419	cyclictest	0	-21	swapper/9	22:12:26	15
283147	99	437	436,1	cyclictest	465409	-21	kworker/2:1+i915-unordered	22:56:43	8
283147	99	437	24,413	cyclictest	0	-21	swapper/2	23:20:42	8
283144	99	437	27,409	cyclictest	0	-21	swapper/1	22:46:42	1
283144	99	437	25,412	cyclictest	0	-21	swapper/1	23:35:42	1
283199	99	436	14,29	cyclictest	0	-21	swapper/15	22:08:05	7
283196	99	436	18,416	cyclictest	0	-21	swapper/14	23:58:27	6
283196	99	436	18,416	cyclictest	0	-21	swapper/14	23:58:27	6
283196	99	436	17,417	cyclictest	0	-21	swapper/14	23:02:26	6
283181	99	436	14,421	cyclictest	0	-21	swapper/11	20:22:27	3
283152	99	436	435,1	cyclictest	0	-21	swapper/3	19:49:43	9
283152	99	436	18,417	cyclictest	0	-21	swapper/3	20:42:27	9
283144	99	436	25,411	cyclictest	0	-21	swapper/1	22:35:42	1
283140	99	436	433,2	cyclictest	371666	-21	kworker/u64:1+events_unbound	20:56:28	0
283199	99	435	19,414	cyclictest	0	-21	swapper/15	20:26:43	7
283196	99	435	21,413	cyclictest	0	-21	swapper/14	21:11:43	6
283196	99	435	21,413	cyclictest	0	-21	swapper/14	21:11:43	6
283181	99	435	15,419	cyclictest	0	-21	swapper/11	19:41:27	3
283176	99	435	22,413	cyclictest	0	-21	swapper/10	21:50:43	2
283152	99	435	16,418	cyclictest	0	-21	swapper/3	21:27:05	9
283152	99	435	15,419	cyclictest	0	-21	swapper/3	22:46:26	9
283152	99	435	14,421	cyclictest	0	-21	swapper/3	19:58:06	9
283147	99	435	17,417	cyclictest	0	-21	swapper/2	20:32:43	8
283140	99	435	435,0	cyclictest	0	-21	swapper/0	20:59:43	0
283189	99	434	434,0	cyclictest	0	-21	swapper/12	20:58:54	4
283173	99	434	11,422	cyclictest	0	-21	swapper/9	21:15:05	15
283173	99	434	11,422	cyclictest	0	-21	swapper/9	21:15:05	15
283152	99	434	13,420	cyclictest	0	-21	swapper/3	22:22:05	9
283140	99	434	434,0	cyclictest	0	-21	swapper/0	22:10:04	0
283196	99	433	14,417	cyclictest	0	-21	swapper/14	22:28:03	6
283181	99	433	430,2	cyclictest	316107	-21	kworker/u64:6+events_unbound	21:18:06	3
283181	99	433	430,2	cyclictest	316107	-21	kworker/u64:6+events_unbound	21:18:06	3
283173	99	433	12,420	cyclictest	0	-21	swapper/9	20:24:28	15
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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