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 Fri Feb 27, 2026 00:43:46)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
968024	99	525	98,422	cyclictest	1222362	-21	kworker/11:1+i915-unordered	00:27:22	3
968024	99	515	87,422	cyclictest	1174101	-21	kworker/11:2+i915-unordered	23:26:22	3
968024	99	514	90,423	cyclictest	1162087	-21	kworker/11:1+i915-unordered	23:36:22	3
968024	99	512	63,448	cyclictest	1132486	-21	kworker/11:0+i915-unordered	22:56:22	3
968024	99	505	81,420	cyclictest	1069519	-21	kworker/11:1+i915-unordered	21:21:22	3
968024	99	494	492,2	cyclictest	976560	-21	kworker/11:0+i915-unordered	19:20:22	3
968024	99	493	492,1	cyclictest	1198979	-21	kworker/11:0+i915-unordered	00:38:22	3
968024	99	491	490,1	cyclictest	1132486	-21	kworker/11:0+i915-unordered	22:51:22	3
968024	99	491	490,1	cyclictest	1000968	-21	kworker/11:1+i915-unordered	19:52:22	3
968024	99	491	490,1	cyclictest	1000968	-21	kworker/11:1+i915-unordered	19:52:22	3
968024	99	490	30,459	cyclictest	0	-21	swapper/11	20:16:22	3
968024	99	489	488,1	cyclictest	1162087	-21	kworker/11:1+i915-unordered	23:23:22	3
968024	99	488	487,1	cyclictest	976560	-21	kworker/11:0+i915-unordered	19:43:22	3
968024	99	488	487,1	cyclictest	1198979	-21	kworker/11:0+i915-unordered	00:23:22	3
968024	99	488	487,1	cyclictest	1125889	-21	kworker/11:2+i915-unordered	22:28:22	3
968003	99	488	487,1	cyclictest	1081453	-21	kworker/6:2+i915-unordered	22:01:22	12
968024	99	487	486,1	cyclictest	870399	-21	kworker/11:1+i915-unordered	19:18:22	3
967999	99	483	14,468	cyclictest	0	-21	swapper/5	22:53:22	11
968036	99	482	480,2	cyclictest	1182181	-21	kworker/14:2+i915-unordered	23:43:22	6
968024	99	476	475,1	cyclictest	870399	-21	kworker/11:1+i915-unordered	19:11:22	3
967984	99	473	472,0	cyclictest	1003391	-21	kworker/1:2+i915-unordered	20:16:22	1
968036	99	469	469,0	cyclictest	0	-21	swapper/14	22:01:22	6
968028	99	469	21,58	cyclictest	0	-21	swapper/12	23:47:22	4
968003	99	469	467,1	cyclictest	0	-21	swapper/6	23:43:22	12
968024	99	465	8,455	cyclictest	0	-21	swapper/11	19:27:22	3
968024	99	462	10,451	cyclictest	0	-21	swapper/11	21:50:22	3
968033	99	460	460,0	cyclictest	1142079	-21	kworker/13:0+i915-unordered	22:53:22	5
968024	99	460	19,440	cyclictest	0	-21	swapper/11	20:22:22	3
967980	99	456	0,451	cyclictest	0	-21	swapper/0	20:06:22	0
968024	99	452	10,439	cyclictest	0	-21	swapper/11	23:43:22	3
968013	99	452	24,426	cyclictest	0	-21	swapper/9	23:43:07	15
968024	99	448	9,438	cyclictest	0	-21	swapper/11	23:18:22	3
968024	99	448	9,437	cyclictest	0	-21	swapper/11	20:26:22	3
968033	99	447	18,29	cyclictest	0	-21	swapper/13	19:19:44	5
968024	99	446	6,439	cyclictest	0	-21	swapper/11	19:56:22	3
968010	99	446	0,30	cyclictest	0	-21	swapper/8	00:36:06	14
967995	99	446	1,30	cyclictest	0	-21	swapper/4	23:53:22	10
967980	99	446	17,30	cyclictest	0	-21	swapper/0	22:07:43	0
968033	99	445	18,29	cyclictest	0	-21	swapper/13	23:59:46	5
967991	99	445	444,1	cyclictest	697	50	irq/159-i915	19:40:22	9
968033	99	444	18,29	cyclictest	0	-21	swapper/13	23:24:44	5
967984	99	444	444,0	cyclictest	0	-21	swapper/1	23:18:22	1
967984	99	444	444,0	cyclictest	0	-21	swapper/1	21:50:22	1
967991	99	436	436,0	cyclictest	697	50	irq/159-i915	20:13:22	9
968033	99	434	10,29	cyclictest	0	-21	swapper/13	22:08:04	5
967991	99	431	430,1	cyclictest	697	50	irq/159-i915	00:27:22	9
968010	99	429	427,1	cyclictest	1169941	-21	kworker/8:1+i915-unordered	23:19:44	14
968013	99	428	0,29	cyclictest	0	-21	swapper/9	23:25:07	15
967991	99	427	426,1	cyclictest	697	50	irq/159-i915	19:13:22	9
968033	99	426	0,27	cyclictest	0	-21	swapper/13	22:58:08	5
967984	99	426	0,0	cyclictest	0	-21	swapper/1	21:05:22	1
968028	99	425	422,2	cyclictest	1153826	-21	kworker/u64:7+events_unbound	00:24:45	4
968013	99	425	26,396	cyclictest	0	-21	swapper/9	19:29:45	15
968013	99	425	24,400	cyclictest	0	-21	swapper/9	22:46:46	15
968033	99	424	0,26	cyclictest	0	-21	swapper/13	23:54:04	5
968013	99	424	25,397	cyclictest	0	-21	swapper/9	20:35:06	15
968013	99	424	1,29	cyclictest	0	-21	swapper/9	00:24:44	15
967995	99	424	8,414	cyclictest	0	-21	swapper/4	22:21:44	10
967995	99	424	26,397	cyclictest	0	-21	swapper/4	21:55:45	10
967989	99	424	421,3	cyclictest	1061368	-21	kworker/u64:8+events_unbound	21:32:22	8
968028	99	423	421,2	cyclictest	1801	-21	snmpd	20:43:55	4
968013	99	423	25,396	cyclictest	0	-21	swapper/9	19:49:46	15
968013	99	423	25,396	cyclictest	0	-21	swapper/9	19:49:46	15
968013	99	423	24,396	cyclictest	0	-21	swapper/9	22:15:45	15
968013	99	423	23,398	cyclictest	0	-21	swapper/9	21:11:44	15
968013	99	423	23,398	cyclictest	0	-21	swapper/9	20:11:44	15
968013	99	423	23,398	cyclictest	0	-21	swapper/9	20:07:45	15
968013	99	423	23,397	cyclictest	0	-21	swapper/9	23:22:44	15
968013	99	423	23,397	cyclictest	0	-21	swapper/9	20:02:45	15
968013	99	423	22,397	cyclictest	0	-21	swapper/9	21:51:44	15
967995	99	423	26,395	cyclictest	0	-21	swapper/4	19:31:44	10
967995	99	423	25,397	cyclictest	0	-21	swapper/4	23:45:46	10
967995	99	423	25,397	cyclictest	0	-21	swapper/4	19:51:45	10
967995	99	423	25,397	cyclictest	0	-21	swapper/4	19:51:45	10
967995	99	423	24,398	cyclictest	0	-21	swapper/4	21:47:06	10
967995	99	423	24,398	cyclictest	0	-21	swapper/4	19:17:44	10
968024	99	422	5,0	cyclictest	0	-21	swapper/11	21:02:06	3
968018	99	422	421,1	cyclictest	0	-21	swapper/10	21:32:22	2
968013	99	422	24,396	cyclictest	0	-21	swapper/9	22:43:45	15
968013	99	422	24,396	cyclictest	0	-21	swapper/9	22:43:45	15
968013	99	422	23,397	cyclictest	0	-21	swapper/9	22:13:43	15
968013	99	422	23,397	cyclictest	0	-21	swapper/9	00:01:44	15
968010	99	422	0,30	cyclictest	0	-21	swapper/8	21:24:06	14
968010	99	422	0,30	cyclictest	0	-21	swapper/8	19:59:08	14
968010	99	422	0,29	cyclictest	0	-21	swapper/8	19:27:09	14
967995	99	422	25,396	cyclictest	0	-21	swapper/4	21:01:45	10
967995	99	422	25,396	cyclictest	0	-21	swapper/4	19:43:06	10
967995	99	422	25,396	cyclictest	0	-21	swapper/4	00:11:43	10
967995	99	422	23,398	cyclictest	0	-21	swapper/4	23:55:43	10
968028	99	421	419,2	cyclictest	0	-21	swapper/12	22:20:22	4
968024	99	421	23,397	cyclictest	0	-21	swapper/11	21:24:44	3
968013	99	421	24,394	cyclictest	0	-21	swapper/9	21:57:04	15
968013	99	421	22,397	cyclictest	0	-21	swapper/9	19:12:46	15
968013	99	421	22,396	cyclictest	0	-21	swapper/9	20:16:44	15
968013	99	421	21,397	cyclictest	0	-21	swapper/9	23:57:06	15
968010	99	421	421,0	cyclictest	0	-21	swapper/8	21:32:06	14
967995	99	421	25,395	cyclictest	0	-21	swapper/4	21:05:06	10
967995	99	421	25,395	cyclictest	0	-21	swapper/4	00:37:06	10
967995	99	421	24,396	cyclictest	0	-21	swapper/4	21:30:44	10
967995	99	421	22,399	cyclictest	0	-21	swapper/4	20:51:08	10
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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