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 Sat Aug 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
2677548	99	731	730,1	cyclictest	0	-21	swapper/11	22:38:39	3
2677526	99	573	18,554	cyclictest	0	-21	swapper/5	20:38:54	11
2677526	99	573	18,554	cyclictest	0	-21	swapper/5	20:38:54	11
2677566	99	529	4,521	cyclictest	0	-21	swapper/15	23:40:53	7
2677518	99	525	525,0	cyclictest	0	-21	swapper/3	23:00:53	9
2677532	99	520	518,2	cyclictest	2751035	-21	kworker/7:1+i915-unordered	20:46:54	13
2677508	99	518	0,517	cyclictest	0	-21	swapper/0	21:57:53	0
2677514	99	513	74,438	cyclictest	2831437	-21	kworker/2:2+i915-unordered	22:15:53	8
2677548	99	500	441,29	cyclictest	0	-21	swapper/11	21:35:53	3
2677562	99	492	490,2	cyclictest	2690317	-21	kworker/14:0+i915-unordered	19:25:54	6
2677537	99	492	492,0	cyclictest	2811543	-21	kworker/8:1+i915-unordered	21:57:53	14
2677562	99	491	2,489	cyclictest	0	-21	swapper/14	19:30:54	6
2677562	99	487	487,0	cyclictest	2738820	-21	kworker/14:1+i915-unordered	20:23:54	6
2677518	99	483	482,1	cyclictest	0	-21	swapper/3	19:08:54	9
2677562	99	482	452,30	cyclictest	0	-21	swapper/14	20:45:54	6
2677560	99	482	481,1	cyclictest	0	-21	swapper/13	21:25:54	5
2677526	99	481	3,58	cyclictest	0	-21	swapper/5	23:59:38	11
2677532	99	478	477,1	cyclictest	2900149	-21	kworker/7:1+i915-unordered	23:40:53	13
2677532	99	477	28,444	cyclictest	1560	-21	runrttasks	20:18:53	13
2677560	99	475	473,2	cyclictest	2742777	-21	kworker/13:2+i915-unordered	20:38:54	5
2677560	99	475	473,2	cyclictest	2742777	-21	kworker/13:2+i915-unordered	20:38:54	5
2677543	99	475	24,30	cyclictest	0	-21	swapper/10	23:37:38	2
2677526	99	475	474,1	cyclictest	2787452	-21	kworker/5:2+i915-unordered	21:25:54	11
2677543	99	474	26,29	cyclictest	0	-21	swapper/10	21:04:37	2
2677514	99	474	0,473	cyclictest	0	-21	swapper/2	21:57:53	8
2677532	99	473	28,28	cyclictest	0	-21	swapper/7	00:14:49	13
2677548	99	471	470,0	cyclictest	2859861	-21	kworker/11:2+i915-unordered	23:00:53	3
2677514	99	467	466,1	cyclictest	2944313	-21	kworker/2:2+i915-unordered	00:32:53	8
2677562	99	466	464,2	cyclictest	2686110	-21	kworker/14:1+i915-unordered	19:13:54	6
2677518	99	465	16,30	cyclictest	0	-21	swapper/3	00:20:39	9
2677518	99	464	14,447	cyclictest	0	-21	swapper/3	00:19:36	9
2677514	99	464	46,14	cyclictest	2936309	-21	kworker/2:1+i915-unordered	00:26:53	8
2677514	99	461	460,1	cyclictest	2916234	-21	kworker/2:0+i915-unordered	00:07:53	8
2677548	99	459	458,1	cyclictest	2652798	-21	kworker/11:3+i915-unordered	19:08:54	3
2677529	99	458	17,30	cyclictest	0	-21	swapper/6	22:36:53	12
2677526	99	458	11,29	cyclictest	0	-21	swapper/5	22:39:16	11
2677532	99	457	17,29	cyclictest	0	-21	swapper/7	21:42:53	13
2677514	99	457	456,1	cyclictest	1818	-21	snmpd	23:52:50	8
2677543	99	455	453,2	cyclictest	1818	-21	snmpd	21:40:50	2
2677529	99	455	6,30	cyclictest	0	-21	swapper/6	19:32:16	12
2677532	99	454	453,1	cyclictest	0	-21	swapper/7	21:13:54	13
2677560	99	453	452,0	cyclictest	2714761	-21	kworker/13:0+i915-unordered	20:20:54	5
2677541	99	453	450,3	cyclictest	0	-21	swapper/9	00:30:27	15
2677537	99	453	16,30	cyclictest	0	-21	swapper/8	22:53:14	14
2677532	99	453	8,29	cyclictest	0	-21	swapper/7	19:29:49	13
2677522	99	453	452,1	cyclictest	1818	-21	snmpd	20:47:27	10
2677543	99	452	3,30	cyclictest	0	-21	swapper/10	00:03:14	2
2677529	99	452	452,0	cyclictest	0	-21	swapper/6	21:45:50	12
2677514	99	452	451,1	cyclictest	0	-21	swapper/2	20:46:54	8
2677543	99	451	0,30	cyclictest	0	-21	swapper/10	21:08:38	2
2677537	99	451	3,448	cyclictest	0	-21	swapper/8	22:19:36	14
2677529	99	451	32,416	cyclictest	2842642	-21	ntpq	22:25:14	12
2677543	99	450	0,30	cyclictest	0	-21	swapper/10	20:27:36	2
2677543	99	450	0,29	cyclictest	0	-21	swapper/10	20:42:37	2
2677537	99	450	5,29	cyclictest	0	-21	swapper/8	23:53:17	14
2677543	99	449	26,422	cyclictest	0	-21	swapper/10	20:24:39	2
2677543	99	449	0,29	cyclictest	0	-21	swapper/10	20:55:37	2
2677529	99	449	22,29	cyclictest	0	-21	swapper/6	19:14:16	12
2677526	99	449	1,29	cyclictest	0	-21	swapper/5	19:36:37	11
2677566	99	448	0,29	cyclictest	0	-21	swapper/15	21:02:40	7
2677537	99	448	2,29	cyclictest	0	-21	swapper/8	22:10:38	14
2677543	99	447	16,430	cyclictest	0	-21	swapper/10	23:49:36	2
2677543	99	447	0,28	cyclictest	0	-21	swapper/10	21:15:37	2
2677537	99	447	2,29	cyclictest	0	-21	swapper/8	00:10:40	14
2677537	99	447	0,29	cyclictest	0	-21	swapper/8	22:42:37	14
2677529	99	447	5,28	cyclictest	0	-21	swapper/6	21:26:53	12
2677566	99	446	24,421	cyclictest	0	-21	swapper/15	20:15:36	7
2677543	99	446	26,419	cyclictest	0	-21	swapper/10	22:48:38	2
2677543	99	446	25,419	cyclictest	0	-21	swapper/10	21:33:37	2
2677543	99	446	25,419	cyclictest	0	-21	swapper/10	00:33:15	2
2677514	99	446	445,1	cyclictest	0	-21	swapper/2	20:23:54	8
2677543	99	445	26,417	cyclictest	0	-21	swapper/10	23:13:37	2
2677537	99	445	3,30	cyclictest	0	-21	swapper/8	20:58:53	14
2677566	99	444	23,419	cyclictest	0	-21	swapper/15	00:14:36	7
2677566	99	444	22,421	cyclictest	0	-21	swapper/15	20:47:14	7
2677555	99	444	443,1	cyclictest	2815651	-21	kworker/12:0+i915-unordered	22:25:53	4
2677514	99	444	443,1	cyclictest	0	-21	swapper/2	21:25:54	8
2677555	99	443	440,3	cyclictest	1818	-21	snmpd	22:55:06	4
2677543	99	443	23,418	cyclictest	0	-21	swapper/10	21:56:35	2
2677532	99	443	0,29	cyclictest	0	-21	swapper/7	21:50:53	13
2677518	99	443	23,418	cyclictest	0	-21	swapper/3	21:45:17	9
2677566	99	442	23,418	cyclictest	0	-21	swapper/15	19:29:15	7
2677529	99	442	440,1	cyclictest	79	-21	ksoftirqd/6	20:23:54	12
2677518	99	442	21,420	cyclictest	0	-21	swapper/3	22:59:14	9
2677508	99	442	440,2	cyclictest	1818	-21	snmpd	22:03:26	0
2677508	99	442	23,418	cyclictest	0	-21	swapper/0	20:35:53	0
2677508	99	442	23,418	cyclictest	0	-21	swapper/0	20:35:53	0
2677566	99	441	21,417	cyclictest	0	-21	swapper/15	22:15:17	7
2677555	99	441	438,2	cyclictest	2867823	-21	kworker/12:1+pm	23:07:28	4
2677543	99	441	440,1	cyclictest	697	50	irq/159-i915	21:25:54	2
2677508	99	441	439,1	cyclictest	1818	-21	snmpd	23:30:49	0
2677566	99	440	20,419	cyclictest	0	-21	swapper/15	21:53:15	7
2677566	99	440	20,419	cyclictest	0	-21	swapper/15	19:41:16	7
2677566	99	440	20,418	cyclictest	0	-21	swapper/15	00:30:15	7
2677566	99	440	19,420	cyclictest	0	-21	swapper/15	23:39:36	7
2677541	99	440	439,1	cyclictest	2891938	-21	kworker/9:1+pm	23:28:04	15
2677541	99	440	439,1	cyclictest	2891938	-21	kworker/9:1+pm	23:28:04	15
2677526	99	440	21,418	cyclictest	0	-21	swapper/5	19:21:16	11
2677514	99	440	54,385	cyclictest	2900017	-21	kworker/2:1+i915-unordered	23:41:53	8
2677510	99	440	437,3	cyclictest	2886650	-21	kworker/u64:2+events_unbound	23:38:53	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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