OSADL QA Farm on Real-time of Mainline Linux

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

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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 highest latencies:

System rack7slot2.osadl.org (updated Thu Sep 17, 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
2956457	99	90	81,7	cyclictest	3092714	-21	kworker/u4:3+events_unbound	23:10:31	1
2956456	99	81	56,17	cyclictest	3028279	-21	ssh	21:55:12	0
2956456	99	80	58,16	cyclictest	2987362	-21	diskmemload	00:25:09	0
2956457	99	78	70,5	cyclictest	2974460	-21	kworker/u4:5+events_unbound	20:45:01	1
2956456	99	78	36,13	cyclictest	2992183	-21	apt-get	21:15:16	0
2956457	99	77	30,6	cyclictest	0	-21	swapper/1	00:10:12	1
2956456	99	76	36,13	cyclictest	2970839	-21	apt-get	20:05:11	0
2956456	99	76	34,15	cyclictest	3068981	-21	ntpq	22:40:29	0
2956457	99	75	37,34	cyclictest	0	-21	swapper/1	22:02:36	1
2956456	99	74	33,17	cyclictest	3152353	-21	apt-get	00:15:11	0
2956457	99	73	45,26	cyclictest	3060021	-21	ntpq	22:30:25	1
2956457	99	73	42,28	cyclictest	3144576	-21	mailstats	00:05:42	1
2956457	99	73	39,5	cyclictest	3130772	-21	if_eth0	23:50:23	1
2956457	99	73	31,5	cyclictest	0	-21	swapper/1	22:45:31	1
2956457	99	73	31,5	cyclictest	0	-21	swapper/1	22:45:31	1
2956456	99	73	31,16	cyclictest	2978501	-21	apt-get	20:35:12	0
2956457	99	72	32,7	cyclictest	0	-21	swapper/1	23:40:28	1
2956457	99	71	5,24	cyclictest	3126557	-21	ntpq	23:45:31	1
2956457	99	70	64,4	cyclictest	2975758	-21	kworker/u4:16+events_unbound	21:00:02	1
2956457	99	70	62,6	cyclictest	3024957	-21	ls	21:50:39	1
2956457	99	70	36,5	cyclictest	3166206	-21	gltestperf	00:30:22	1
2956457	99	70	36,5	cyclictest	3166206	-21	gltestperf	00:30:22	1
2956457	99	70	34,6	cyclictest	0	-21	swapper/1	23:55:29	1
2956457	99	70	30,9	cyclictest	0	-21	swapper/1	19:20:23	1
2956456	99	70	57,7	cyclictest	0	-21	swapper/0	20:15:01	0
2956456	99	70	33,9	cyclictest	2969567	-21	apt-get	20:00:12	0
2956457	99	69	40,27	cyclictest	3042348	-21	ldconfig	22:10:28	1
2956457	99	69	30,7	cyclictest	0	-21	swapper/1	21:15:30	1
2956457	99	68	60,6	cyclictest	3028293	-21	sshd	21:55:13	1
2956457	99	68	32,7	cyclictest	0	-21	swapper/1	00:35:32	1
2956456	99	68	26,17	cyclictest	3050165	-21	modprobe	22:20:00	0
2956457	99	67	34,6	cyclictest	2971839	-21	unixbench_multi	20:05:37	1
2956457	99	67	32,6	cyclictest	0	-21	swapper/1	22:55:28	1
2956456	99	67	25,11	cyclictest	3131084	-21	ntpq	23:50:35	0
2956457	99	66	31,6	cyclictest	3070219	-21	kworker/u4:8-rpciod	22:50:39	1
2956456	99	66	43,19	cyclictest	2956606	-21	apt-get	19:10:11	0
2956456	99	65	32,19	cyclictest	3085888	-21	ssh	23:00:08	0
2956457	99	64	4,23	cyclictest	3020793	-21	ssh	21:45:46	1
2956457	99	64	30,7	cyclictest	0	-21	swapper/1	21:20:33	1
2956456	99	64	36,10	cyclictest	2988577	-21	ntpq	21:10:38	0
2956456	99	64	25,21	cyclictest	3095483	-21	ssh	23:10:27	0
2956456	99	64	24,19	cyclictest	3002497	-21	unixbench_multi	21:25:39	0
2956457	99	63	7,23	cyclictest	3046945	-21	ssh	22:15:38	1
2956457	99	63	55,6	cyclictest	2986059	-21	kworker/u4:8+events_unbound	21:05:02	1
2956457	99	63	29,6	cyclictest	0	-21	swapper/1	20:10:37	1
2956457	99	63	28,7	cyclictest	3128088	-21	kworker/u4:3-rpciod	00:15:33	1
2956456	99	63	56,3	cyclictest	3106263	-21	kworker/u4:11+events_unbound	23:30:36	0
2956456	99	63	26,10	cyclictest	3091747	-21	ssh	23:05:43	0
2956456	99	63	23,15	cyclictest	3067927	-21	munin-run	22:40:01	0
2956456	99	63	22,9	cyclictest	3021731	-21	ssh	21:47:14	0
2956456	99	63	21,22	cyclictest	3027988	-21	awk	21:55:00	0
2956456	99	63	18,23	cyclictest	3059069	-21	wc	22:30:01	0
2956457	99	62	5,20	cyclictest	3039479	-21	ssh	22:07:12	1
2956456	99	62	39,17	cyclictest	3072942	-21	ssh	22:45:18	0
2956456	99	62	39,17	cyclictest	3072942	-21	ssh	22:45:18	0
2956456	99	62	26,11	cyclictest	3166628	-21	ntpq	00:30:38	0
2956456	99	62	26,11	cyclictest	3166628	-21	ntpq	00:30:38	0
2956456	99	62	26,10	cyclictest	3151022	-21	ssh	00:13:24	0
2956456	99	62	25,14	cyclictest	3013669	-21	ssh	21:38:43	0
2956456	99	62	25,11	cyclictest	2976595	-21	ntp_states	20:25:30	0
2956456	99	62	25,10	cyclictest	3108118	-21	ssh	23:25:13	0
2956456	99	62	23,12	cyclictest	3007227	-21	ssh	21:30:47	0
2956456	99	62	18,21	cyclictest	2965111	-21	find	19:40:35	0
2956456	99	61	27,11	cyclictest	3033563	-21	ntpq	22:00:32	0
2956456	99	61	26,18	cyclictest	0	-21	swapper/0	19:45:43	0
2956456	99	61	26,18	cyclictest	0	-21	swapper/0	19:45:43	0
2956456	99	61	26,11	cyclictest	0	-21	swapper/0	22:50:25	0
2956456	99	61	25,13	cyclictest	3100185	-21	ntpq	23:15:39	0
2956456	99	61	24,11	cyclictest	3136433	-21	ssh	23:56:25	0
2956457	99	60	39,18	cyclictest	0	-21	swapper/1	21:30:13	1
2956457	99	60	1,54	cyclictest	3104377	-21	ssh	23:20:25	1
2956456	99	60	39,16	cyclictest	3118323	-21	ssh	23:35:43	0
2956456	99	60	36,7	cyclictest	3051465	-21	ssh	22:20:38	0
2956456	99	60	29,20	cyclictest	2985255	-21	fschecks_count	21:00:18	0
2956456	99	60	24,10	cyclictest	3000275	-21	ssh	21:23:58	0
2956456	99	59	48,8	cyclictest	53	-21	kswapd0	21:45:01	0
2956456	99	59	27,7	cyclictest	3060104	-21	ntpq	22:30:29	0
2956456	99	59	26,7	cyclictest	2979801	-21	apt-get	20:40:11	0
2956456	99	59	24,12	cyclictest	3104373	-21	ntpq	23:20:25	0
2956456	99	59	24,12	cyclictest	3082273	-21	ntpq	22:55:31	0
2956456	99	59	23,12	cyclictest	3043073	-21	ssh	22:10:51	0
2956456	99	58	43,12	cyclictest	2960456	-21	apt-get	19:25:09	0
2956456	99	58	42,12	cyclictest	2968898	-21	ntpq	19:55:30	0
2956456	99	58	33,8	cyclictest	2967571	-21	ntpq	19:50:29	0
2956456	99	58	33,6	cyclictest	3122300	-21	ntpq	23:40:37	0
2956456	99	58	25,11	cyclictest	3037918	-21	ntpq	22:05:29	0
2956456	99	58	23,9	cyclictest	2973941	-21	ntpq	20:15:29	0
2956456	99	57	43,9	cyclictest	2961725	-21	apt-get	19:30:12	0
2956456	99	57	41,12	cyclictest	3125820	-21	apt-get	23:45:13	0
2956456	99	57	41,12	cyclictest	2963667	-21	ntpq	19:35:33	0
2956456	99	57	40,13	cyclictest	2974687	-21	apt-get	20:20:12	0
2956456	99	57	40,12	cyclictest	2977824	-21	ntpq	20:30:30	0
2956456	99	57	38,14	cyclictest	3144390	-21	ssh	00:05:38	0
2956456	99	57	21,12	cyclictest	3156827	-21	apt-get	00:20:15	0
2956456	99	56	39,13	cyclictest	2986260	-21	apt-get	21:05:13	0
2956456	99	56	28,10	cyclictest	2959752	-21	ntpq	19:20:26	0
2956456	99	56	23,11	cyclictest	2983442	-21	apt-get	20:55:04	0
2956456	99	55	42,8	cyclictest	2958538	-21	ntpq	19:15:36	0
2956456	99	55	40,12	cyclictest	2981071	-21	apt-get	20:45:12	0
2956456	99	55	21,12	cyclictest	1073	-21	snmpd	00:04:33	0
2956457	99	54	46,6	cyclictest	2974462	-21	kworker/u4:14+events_unbound	20:39:58	1
2956457	99	54	41,10	cyclictest	3101748	-21	kworker/u4:2+events_unbound	23:25:36	1
2956456	99	54	34,16	cyclictest	2982876	-21	ntpq	20:50:24	0
2956456	99	54	23,10	cyclictest	3170142	-21	apt-get	00:35:13	0
2956457	99	53	45,5	cyclictest	2956377	-21	kworker/u4:4+events_unbound	19:19:46	1
2956457	99	53	42,8	cyclictest	2982188	-21	idleruntime-cro	20:50:01	1
2956457	99	52	44,5	cyclictest	0	-21	swapper/1	22:40:21	1
2956457	99	52	43,7	cyclictest	2977039	-21	systemd	20:29:55	1
2956457	99	52	32,5	cyclictest	2975757	-21	kworker/u4:15+events_unbound	20:55:01	1
2956457	99	51	44,5	cyclictest	3065046	-21	unixbench-2d	22:35:44	1
2956457	99	51	44,5	cyclictest	2952730	-21	kworker/u4:10+events_unbound	19:59:51	1
2956457	99	51	29,14	cyclictest	3090056	-21	modprobe	23:05:01	1
2956457	99	50	42,6	cyclictest	3092715	-21	kworker/u4:6+events_unbound	23:15:33	1
2956457	99	50	41,7	cyclictest	2978082	-21	timerandwakeup	20:30:38	1
2956457	99	49	42,5	cyclictest	2970000	-21	cut	20:00:22	1
2956457	99	48	41,5	cyclictest	3157855	-21	mailstats	00:20:38	1
2956457	99	48	3,37	cyclictest	2963064	-21	basename	19:35:13	1
2956457	99	47	40,5	cyclictest	3015044	-21	aten_r7power_vo	21:40:18	1
2956457	99	47	38,6	cyclictest	3116679	-21	munin-run	23:35:00	1
2956457	99	46	38,6	cyclictest	2984437	-21	sendmail_mailqu	20:55:41	1
2956457	99	46	38,5	cyclictest	3059175	-21	sh	22:30:01	1
2956457	99	46	37,7	cyclictest	3010758	-21	gltestperf	21:35:20	1
2956457	99	46	36,7	cyclictest	3094514	-21	sh	23:10:01	1
2956457	99	46	35,7	cyclictest	0	-21	swapper/1	23:35:25	1
2956457	99	46	29,11	cyclictest	0	-21	swapper/1	21:25:29	1
2956457	99	45	35,7	cyclictest	2973588	-21	df_abs	20:15:19	1
2956457	99	45	30,11	cyclictest	3162373	-21	ls	00:25:42	1
2956457	99	44	35,6	cyclictest	2966627	-21	timerwakeupswit	19:45:43	1
2956457	99	44	35,6	cyclictest	2966627	-21	timerwakeupswit	19:45:43	1
2956457	99	44	34,6	cyclictest	0	-21	swapper/1	22:20:26	1
2956457	99	44	33,7	cyclictest	2975758	-21	kworker/u4:16+events_unbound	21:10:04	1
2956457	99	43	36,5	cyclictest	2961537	-21	systemd	19:29:46	1
2956457	99	43	34,7	cyclictest	2975577	-21	timerwakeupswit	20:20:37	1
2956457	99	43	34,5	cyclictest	0	-21	swapper/1	19:30:20	1
2956456	99	43	30,10	cyclictest	2956465	-21	latency_hist	19:10:00	0
2956457	99	42	34,6	cyclictest	3141566	-21	kworker/u4:8+events_unbound	00:03:35	1
2956457	99	42	33,6	cyclictest	2960254	-21	kworker/u4:3+events_unbound	19:44:50	1
2956457	99	41	30,7	cyclictest	0	-21	swapper/1	19:10:29	1
2956457	99	39	31,5	cyclictest	0	-21	swapper/1	19:50:37	1
2956457	99	39	29,7	cyclictest	2956565	-21	latency_hist	19:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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