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 Sun Apr 05, 2026 00:43:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
143548	99	706	307,397	cyclictest	0	-21	swapper/13	22:59:09	5
143529	99	531	39,491	cyclictest	0	-21	swapper/9	20:47:27	15
143515	99	509	11,497	cyclictest	0	-21	swapper/5	20:35:27	11
143499	99	494	493,1	cyclictest	0	-21	swapper/1	23:42:26	1
143544	99	486	486,0	cyclictest	325581	-21	kworker/12:2+i915-unordered	22:57:26	4
143519	99	482	482,0	cyclictest	192375	-21	kworker/6:2+i915-unordered	20:05:27	12
143519	99	482	482,0	cyclictest	192375	-21	kworker/6:2+i915-unordered	20:05:27	12
143519	99	481	481,0	cyclictest	321354	-21	kworker/6:1+i915-unordered	23:10:26	12
143510	99	476	21,453	cyclictest	0	-21	swapper/4	19:45:27	10
143510	99	473	19,453	cyclictest	0	-21	swapper/4	20:05:27	10
143510	99	473	19,453	cyclictest	0	-21	swapper/4	20:05:27	10
143515	99	468	466,1	cyclictest	70	-21	ksoftirqd/5	21:45:26	11
143519	99	467	410,29	cyclictest	0	-21	swapper/6	21:27:26	12
143510	99	467	2,27	cyclictest	0	-21	swapper/4	19:21:27	10
143534	99	463	6,59	cyclictest	0	-21	swapper/10	20:12:49	2
143521	99	462	460,2	cyclictest	357695	-21	kworker/7:2+i915-unordered	23:35:26	13
143510	99	462	8,453	cyclictest	0	-21	swapper/4	20:35:27	10
143534	99	456	7,29	cyclictest	0	-21	swapper/10	20:33:10	2
143534	99	453	3,30	cyclictest	0	-21	swapper/10	21:44:09	2
143548	99	452	451,1	cyclictest	179129	-21	kworker/13:2+i915-unordered	20:35:27	5
143534	99	451	22,30	cyclictest	0	-21	swapper/10	20:34:50	2
143502	99	451	450,1	cyclictest	0	-21	swapper/2	19:55:27	8
143499	99	451	28,29	cyclictest	34	-21	ksoftirqd/1	21:55:26	1
143556	99	450	25,29	cyclictest	0	-21	swapper/15	00:10:47	7
143525	99	447	22,30	cyclictest	0	-21	swapper/8	22:11:08	14
143519	99	447	445,1	cyclictest	707	50	usb-storage	20:15:50	12
143529	99	446	445,1	cyclictest	0	-21	swapper/9	19:11:27	15
143525	99	446	23,29	cyclictest	0	-21	swapper/8	21:10:09	14
143552	99	445	444,1	cyclictest	177305	-21	kworker/14:2+i915-unordered	20:03:27	6
143552	99	445	444,1	cyclictest	177305	-21	kworker/14:2+i915-unordered	20:03:27	6
143552	99	445	443,2	cyclictest	232933	-21	kworker/14:1+i915-unordered	21:11:27	6
143544	99	445	444,1	cyclictest	697	50	irq/159-i915	19:45:27	4
143525	99	445	444,1	cyclictest	172422	-21	kworker/8:2+i915-unordered	19:45:27	14
143502	99	445	24,29	cyclictest	0	-21	swapper/2	19:47:27	8
143529	99	444	21,29	cyclictest	0	-21	swapper/9	22:34:22	15
143519	99	444	444,0	cyclictest	0	-21	swapper/6	23:47:48	12
143510	99	443	22,420	cyclictest	0	-21	swapper/4	20:30:48	10
143552	99	442	25,417	cyclictest	0	-21	swapper/14	23:30:26	6
143519	99	442	441,0	cyclictest	0	-21	swapper/6	22:30:10	12
143556	99	441	17,30	cyclictest	0	-21	swapper/15	23:20:49	7
143510	99	441	0,439	cyclictest	0	-21	swapper/4	19:25:27	10
143556	99	440	16,29	cyclictest	0	-21	swapper/15	19:47:09	7
143556	99	440	16,28	cyclictest	0	-21	swapper/15	23:18:47	7
143519	99	440	15,29	cyclictest	0	-21	swapper/6	23:00:26	12
143502	99	440	440,0	cyclictest	0	-21	swapper/2	19:21:27	8
143529	99	439	18,28	cyclictest	0	-21	swapper/9	00:21:26	15
143525	99	439	18,29	cyclictest	0	-21	swapper/8	23:43:10	14
143496	99	439	437,1	cyclictest	0	-21	swapper/0	19:45:27	0
143502	99	438	43,394	cyclictest	0	-21	swapper/2	23:57:26	8
143552	99	437	21,415	cyclictest	0	-21	swapper/14	23:13:26	6
143529	99	437	436,1	cyclictest	361886	-21	kworker/9:0+i915-unordered	23:42:26	15
143534	99	435	10,30	cyclictest	0	-21	swapper/10	22:02:49	2
143521	99	435	434,1	cyclictest	0	-21	swapper/7	00:38:26	13
143506	99	435	432,2	cyclictest	216611	-21	kworker/3:1+i915-unordered	20:57:27	9
143556	99	434	17,415	cyclictest	0	-21	swapper/15	20:37:10	7
143525	99	434	431,3	cyclictest	1818	-21	snmpd	23:01:22	14
143515	99	434	434,0	cyclictest	0	-21	swapper/5	00:26:48	11
143502	99	434	434,0	cyclictest	0	-21	swapper/2	22:21:26	8
143502	99	434	12,29	cyclictest	0	-21	swapper/2	20:16:26	8
143502	99	433	9,423	cyclictest	43	-21	ksoftirqd/2	22:33:26	8
143499	99	433	13,419	cyclictest	0	-21	swapper/1	21:19:49	1
143534	99	432	9,30	cyclictest	0	-21	swapper/10	20:02:10	2
143534	99	432	9,30	cyclictest	0	-21	swapper/10	20:02:10	2
143534	99	432	7,30	cyclictest	0	-21	swapper/10	22:37:47	2
143534	99	432	5,30	cyclictest	0	-21	swapper/10	21:24:11	2
143534	99	432	402,30	cyclictest	0	-21	swapper/10	23:23:26	2
143499	99	432	15,416	cyclictest	0	-21	swapper/1	00:38:47	1
143534	99	431	5,29	cyclictest	0	-21	swapper/10	00:24:11	2
143534	99	431	4,30	cyclictest	0	-21	swapper/10	22:29:08	2
143529	99	429	17,411	cyclictest	0	-21	swapper/9	23:21:26	15
143519	99	429	4,28	cyclictest	0	-21	swapper/6	21:29:47	12
143502	99	429	4,424	cyclictest	0	-21	swapper/2	21:58:26	8
143499	99	428	12,415	cyclictest	0	-21	swapper/1	23:35:08	1
143519	99	427	424,3	cyclictest	1818	-21	snmpd	00:23:21	12
143515	99	427	0,426	cyclictest	0	-21	swapper/5	19:42:13	11
143499	99	427	10,416	cyclictest	0	-21	swapper/1	00:08:10	1
143519	99	426	6,419	cyclictest	0	-21	swapper/6	21:13:13	12
143556	99	425	0,423	cyclictest	0	-21	swapper/15	23:37:26	7
143525	99	425	0,31	cyclictest	0	-21	swapper/8	23:29:10	14
143515	99	425	3,421	cyclictest	0	-21	swapper/5	00:04:50	11
143539	99	424	0,27	cyclictest	0	-21	swapper/11	21:38:10	3
143539	99	424	0,27	cyclictest	0	-21	swapper/11	20:00:12	3
143539	99	424	0,27	cyclictest	0	-21	swapper/11	20:00:12	3
143539	99	424	0,26	cyclictest	0	-21	swapper/11	20:20:09	3
143539	99	424	0,26	cyclictest	0	-21	swapper/11	19:32:13	3
143519	99	424	0,26	cyclictest	0	-21	swapper/6	21:48:49	12
143510	99	424	26,397	cyclictest	0	-21	swapper/4	00:13:47	10
143510	99	424	25,398	cyclictest	0	-21	swapper/4	23:09:48	10
143548	99	423	0,29	cyclictest	0	-21	swapper/13	21:43:26	5
143544	99	423	420,2	cyclictest	196520	-21	kworker/u64:4+events_unbound	20:55:49	4
143525	99	423	0,29	cyclictest	0	-21	swapper/8	20:34:11	14
143519	99	423	420,2	cyclictest	272027	-21	kworker/u64:7+events_unbound	22:19:09	12
143515	99	423	25,397	cyclictest	0	-21	swapper/5	23:46:49	11
143510	99	423	25,397	cyclictest	0	-21	swapper/4	22:15:47	10
143510	99	423	24,398	cyclictest	0	-21	swapper/4	21:08:47	10
143499	99	423	22,400	cyclictest	0	-21	swapper/1	22:39:48	1
143499	99	423	22,400	cyclictest	0	-21	swapper/1	22:39:48	1
143544	99	422	421,1	cyclictest	697	50	irq/159-i915	19:55:27	4
143539	99	422	421,1	cyclictest	697	50	irq/159-i915	20:57:27	3
143539	99	422	25,396	cyclictest	0	-21	swapper/11	21:03:09	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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