OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack7slot2.osadl.org (updated Wed Jul 22, 2026 00:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2759011	99	119	102,6	cyclictest	2899411	-21	kworker/u4:1+events_unbound	23:17:25	1
2759011	99	115	96,6	cyclictest	2868243	-21	kworker/u4:10+events_unbound	22:37:17	1
2759011	99	113	96,6	cyclictest	2913024	-21	kworker/u4:2+events_unbound	23:27:27	1
2759008	99	103	93,7	cyclictest	2841769	-21	kworker/u4:1+events_unbound	22:17:15	0
2759008	99	102	95,5	cyclictest	2801661	-21	kworker/u4:4+events_unbound	21:52:08	0
2759008	99	101	94,5	cyclictest	2962341	-21	kworker/u4:9+events_unbound	00:22:34	0
2759008	99	101	94,5	cyclictest	2962341	-21	kworker/u4:9+events_unbound	00:22:33	0
2759011	99	97	90,5	cyclictest	2957781	-21	kworker/u4:6+events_unbound	00:27:35	1
2759008	99	97	90,5	cyclictest	2767917	-21	kworker/u4:10+events_unbound	20:16:51	0
2759008	99	94	87,5	cyclictest	2760238	-21	kworker/u4:3+events_unbound	19:16:40	0
2759008	99	93	86,5	cyclictest	2788455	-21	kworker/u4:2+events_unbound	21:42:06	0
2759011	99	92	85,5	cyclictest	2828199	-21	kworker/u4:5+events_unbound	21:57:09	1
2759011	99	89	82,5	cyclictest	2767917	-21	kworker/u4:10+events_unbound	19:46:44	1
2759011	99	88	80,6	cyclictest	2785889	-21	kworker/u4:8+events_unbound	21:07:04	1
2759011	99	88	80,6	cyclictest	2783258	-21	kworker/u4:0+events_unbound	20:46:58	1
2759008	99	88	80,6	cyclictest	2810047	-21	kworker/u4:13+events_unbound	21:32:07	0
2759008	99	88	80,6	cyclictest	2767917	-21	kworker/u4:10+events_unbound	19:41:45	0
2759008	99	88	37,29	cyclictest	256	50	irq/23-42890000.ethernet	19:10:00	0
2759011	99	85	68,7	cyclictest	2863679	-21	kworker/u4:0+events_unbound	22:32:15	1
2759011	99	84	68,6	cyclictest	2775571	-21	kworker/u4:3+events_unbound	20:51:59	1
2759011	99	84	64,7	cyclictest	2935087	-21	kworker/u4:12+events_unbound	23:52:28	1
2759011	99	83	76,5	cyclictest	2783259	-21	kworker/u4:1+events_unbound	21:02:02	1
2759011	99	82	58,5	cyclictest	2953257	-21	kworker/u4:7+events_unbound	00:20:00	1
2759008	99	82	74,6	cyclictest	2935082	-21	kworker/u4:3+events_unbound	23:57:29	0
2759008	99	81	73,6	cyclictest	2766619	-21	kworker/u4:6+events_unbound	20:01:48	0
2759008	99	80	68,5	cyclictest	2780693	-21	kworker/u4:17+events_unbound	20:57:00	0
2759008	99	79	71,6	cyclictest	2791862	-21	kworker/u4:14+events_unbound	21:12:03	0
2759008	99	77	70,5	cyclictest	2767927	-21	kworker/u4:11+events_unbound	20:31:54	0
2759008	99	76	68,6	cyclictest	2767917	-21	kworker/u4:10+events_unbound	19:56:47	0
2759011	99	75	61,6	cyclictest	2766616	-21	kworker/u4:2+events_unbound	19:36:44	1
2759008	99	75	67,6	cyclictest	2957781	-21	kworker/u4:6+events_unbound	00:17:34	0
2759008	99	75	52,17	cyclictest	2815227	-21	kworker/u4:8+events_unbound	21:55:02	0
2759008	99	73	68,3	cyclictest	2789729	-21	kworker/u4:13+events_unbound	21:17:04	0
2759008	99	73	65,6	cyclictest	2908481	-21	kworker/u4:4+events_unbound	23:22:26	0
2759008	99	72	64,6	cyclictest	2764082	-21	kworker/u4:15+events_unbound	19:31:43	0
2759011	99	69	61,6	cyclictest	2778152	-21	kworker/u4:12+events_unbound	20:41:59	1
2759008	99	69	55,6	cyclictest	2872824	-21	kworker/u4:3+events_unbound	22:47:18	0
2759008	99	69	55,6	cyclictest	2850757	-21	kworker/u4:13+events_unbound	22:25:01	0
2759011	99	67	59,6	cyclictest	2778152	-21	kworker/u4:12+events_unbound	20:36:57	1
2759011	99	66	58,6	cyclictest	2762811	-21	kworker/u4:13+events_unbound	19:21:41	1
2759008	99	66	58,6	cyclictest	2863681	-21	kworker/u4:2+events_unbound	23:07:24	0
2759008	99	63	55,6	cyclictest	2767917	-21	kworker/u4:10+events_unbound	19:51:46	0
2759011	99	62	42,5	cyclictest	2850104	-21	kworker/u4:12+events_unbound	22:20:47	1
2759011	99	60	44,12	cyclictest	27	1	ktimers/1	00:07:01	1
2759008	99	60	38,18	cyclictest	2919678	-21	apt-get	23:35:14	0
2759008	99	59	51,6	cyclictest	2766615	-21	kworker/u4:1+events_unbound	20:06:49	0
2759011	99	58	44,6	cyclictest	2757736	-21	kworker/u4:7+events_unbound	19:30:00	1
2759008	99	58	50,6	cyclictest	2746179	-21	kworker/u4:12+events_unbound	19:26:42	0
2759011	99	57	50,5	cyclictest	2828199	-21	kworker/u4:5+events_unbound	22:10:01	1
2759008	99	57	50,5	cyclictest	2810047	-21	kworker/u4:13+events_unbound	21:35:01	0
2759008	99	57	40,15	cyclictest	2857275	-21	df_abs	22:25:18	0
2759011	99	56	48,6	cyclictest	2903931	-21	kworker/u4:9+events_unbound	23:20:02	1
2759008	99	56	39,5	cyclictest	2881915	-21	kworker/u4:7+events_unbound	23:11:45	0
2759008	99	56	35,6	cyclictest	2863681	-21	kworker/u4:2+events_unbound	22:33:47	0
2759011	99	55	47,6	cyclictest	0	-21	swapper/1	21:45:38	1
2759011	99	54	47,5	cyclictest	2767193	-21	fschecks_time	19:40:19	1
2759011	99	54	47,5	cyclictest	2759007	-21	cyclictest	21:17:03	1
2759008	99	54	46,6	cyclictest	2903931	-21	kworker/u4:9+events_unbound	23:25:04	0
2759008	99	54	40,6	cyclictest	2814555	-21	kworker/u4:0+events_unbound	21:47:40	0
2759011	99	53	46,5	cyclictest	2973502	-21	/usr/sbin/munin	00:35:20	1
2759011	99	53	46,5	cyclictest	2840595	-21	who	22:05:45	1
2759011	99	53	46,5	cyclictest	2776853	-21	kworker/u4:0+events_unbound	20:21:51	1
2759008	99	53	45,5	cyclictest	2859165	-21	kworker/u4:5-rpciod	22:50:18	0
2759008	99	53	35,7	cyclictest	2859165	-21	kworker/u4:5+events_unbound	22:37:34	0
2759011	99	52	43,7	cyclictest	2761499	-21	systemd	19:16:38	1
2759008	99	52	43,6	cyclictest	2929050	-21	gltestperf	23:45:21	0
2759011	99	51	43,6	cyclictest	2913024	-21	kworker/u4:2+events_unbound	23:31:46	1
2759011	99	51	43,5	cyclictest	0	-21	swapper/1	21:35:23	1
2759011	99	51	42,7	cyclictest	2786976	-21	timerwakeupswit	20:55:41	1
2759008	99	51	43,6	cyclictest	2951997	-21	diskmemload	00:10:38	0
2759008	99	51	43,6	cyclictest	2948710	-21	kworker/u4:2+events_unbound	00:35:00	0
2759008	99	51	43,6	cyclictest	2903928	-21	kworker/u4:5+events_unbound	23:43:45	0
2759008	99	51	43,5	cyclictest	2962340	-21	kworker/u4:8+events_unbound	00:28:39	0
2759008	99	51	38,7	cyclictest	2944168	-21	kworker/u4:15+events_unbound	00:04:45	0
2759011	99	50	43,5	cyclictest	2937764	-21	df_abs	23:55:18	1
2759011	99	50	42,5	cyclictest	2776508	-21	sendmail_mailqu	20:15:37	1
2759011	99	50	41,7	cyclictest	2788455	-21	kworker/u4:2+events_unbound	21:52:05	1
2759011	99	50	41,6	cyclictest	0	-21	swapper/1	23:00:25	1
2759011	99	50	2,17	cyclictest	2875765	-21	ssh	22:45:32	1
2759008	99	50	43,5	cyclictest	2844792	-21	threads	22:10:41	0
2759011	99	49	42,5	cyclictest	2923808	-21	munin-run	23:40:00	1
2759011	99	49	42,5	cyclictest	2888041	-21	cat	23:00:00	1
2759011	99	49	38,8	cyclictest	0	-21	swapper/1	22:15:30	1
2759011	99	49	38,6	cyclictest	2789729	-21	kworker/u4:13+events_unbound	21:14:52	1
2759008	99	49	41,6	cyclictest	2807755	-21	sort	21:30:01	0
2759008	99	49	41,6	cyclictest	2807755	-21	sort	21:30:01	0
2759008	99	49	32,6	cyclictest	2913025	-21	kworker/u4:6+events_unbound	23:33:09	0
2759011	99	48	40,6	cyclictest	2944490	-21	systemd	00:02:30	1
2759011	99	48	40,6	cyclictest	2868244	-21	kworker/u4:11+events_unbound	22:41:17	1
2759011	99	48	40,6	cyclictest	2773030	-21	kworker/u4:5+events_unbound	20:08:46	1
2759011	99	48	39,7	cyclictest	2968786	-21	aten2__	00:30:15	1
2759008	99	48	43,4	cyclictest	2872824	-21	kworker/u4:3+events_unbound	22:42:23	0
2759008	99	48	39,7	cyclictest	2788965	-21	fschecks_time	21:05:23	0
2759008	99	48	39,6	cyclictest	2778774	-21	gltestperf	20:25:22	0
2759008	99	48	35,5	cyclictest	2801661	-21	kworker/u4:4+events_unbound	22:00:04	0
2759008	99	48	27,4	cyclictest	2944167	-21	kworker/u4:14+events_unbound	00:09:46	0
2759011	99	47	40,4	cyclictest	0	-21	swapper/1	00:20:30	1
2759011	99	47	40,4	cyclictest	0	-21	swapper/1	00:20:29	1
2759011	99	47	39,6	cyclictest	2861321	-21	latency_hist	22:30:02	1
2759011	99	47	39,6	cyclictest	2764082	-21	kworker/u4:15+events_unbound	20:11:50	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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