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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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 Fri Jan 30, 2026 00:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2939997	99	88	80,6	cyclictest	3007541	-21	kworker/u4:3+events_unbound	22:08:06	1
2939997	99	83	30,7	cyclictest	0	-21	swapper/1	22:30:14	1
2939996	99	81	14,42	cyclictest	3083241	-21	ntpq	23:20:25	0
2939996	99	81	14,42	cyclictest	3083241	-21	ntpq	23:20:25	0
2939996	99	80	33,26	cyclictest	2961802	-21	aten_r7power_po	20:35:17	0
2939997	99	79	5,20	cyclictest	3049010	-21	ssh	22:40:30	1
2939996	99	78	61,14	cyclictest	2966551	-21	kworker/u4:11+events_unbound	21:17:57	0
2939997	99	77	43,31	cyclictest	3138136	-21	modprobe	00:25:00	1
2939996	99	77	31,28	cyclictest	0	-21	swapper/0	00:25:20	0
2939997	99	76	34,39	cyclictest	3100129	-21	fschecks_count	23:40:19	1
2939997	99	75	9,23	cyclictest	3074366	-21	fschecks_time	23:10:19	1
2939996	99	75	3,68	cyclictest	2939994	-21	cyclictest	19:10:00	0
2939996	99	75	21,29	cyclictest	0	-21	swapper/0	20:55:30	0
2939997	99	73	34,34	cyclictest	0	-21	swapper/1	22:20:23	1
2939996	99	73	3,67	cyclictest	3048890	-21	ntpq	22:40:26	0
2939997	99	72	64,6	cyclictest	3127430	-21	kworker/u4:11+events_unbound	00:13:28	1
2939997	99	72	35,34	cyclictest	0	-21	swapper/1	21:45:30	1
2939997	99	71	37,31	cyclictest	3108173	-21	latency_hist	23:50:01	1
2939997	99	70	35,33	cyclictest	3147755	-21	ntp_offset	00:35:30	1
2939997	99	70	31,8	cyclictest	2984959	-21	xargs	21:25:46	1
2939997	99	70	31,5	cyclictest	0	-21	swapper/1	21:35:20	1
2939996	99	70	43,21	cyclictest	54	-21	kswapd0	23:55:12	0
2939996	99	70	38,29	cyclictest	3023000	-21	kernelversion	22:10:27	0
2939996	99	70	37,29	cyclictest	2965595	-21	aten_r7power_po	20:50:16	0
2939996	99	70	2,45	cyclictest	3006186	-21	/usr/sbin/munin	21:50:36	0
2939997	99	69	29,8	cyclictest	0	-21	swapper/1	19:30:38	1
2939996	99	69	35,31	cyclictest	0	-21	swapper/0	19:30:17	0
2939996	99	69	3,41	cyclictest	0	-21	swapper/0	00:35:17	0
2939996	99	69	2,41	cyclictest	3011336	-21	ssh	21:56:30	0
2939996	99	69	1,43	cyclictest	3089613	-21	ssh	23:27:59	0
2939997	99	68	60,6	cyclictest	2972461	-21	kworker/u4:4+events_unbound	21:22:58	1
2939997	99	68	30,5	cyclictest	0	-21	swapper/1	20:35:25	1
2939997	99	68	28,8	cyclictest	3028759	-21	kworker/u4:3-rpciod	22:50:41	1
2939997	99	68	28,7	cyclictest	0	-21	swapper/1	23:50:38	1
2939997	99	68	27,6	cyclictest	0	-21	swapper/1	20:50:15	1
2939996	99	68	35,31	cyclictest	3013991	-21	aten_r7power_vo	22:00:16	0
2939996	99	68	35,30	cyclictest	3129994	-21	ssh	00:15:16	0
2939997	99	67	6,13	cyclictest	3066146	-21	ntpq	23:00:31	1
2939997	99	67	34,29	cyclictest	0	-21	swapper/1	19:45:01	1
2939997	99	67	33,4	cyclictest	3022521	-21	aten_r7power_cu	22:10:20	1
2939997	99	67	33,32	cyclictest	3143265	-21	kernelversion	00:30:23	1
2939997	99	67	32,5	cyclictest	0	-21	swapper/1	19:25:35	1
2939997	99	67	25,10	cyclictest	3014516	-21	ntpq	22:00:28	1
2939996	99	67	1,43	cyclictest	3079048	-21	ntpq	23:15:30	0
2939997	99	66	34,30	cyclictest	3138799	-21	fschecks_time	00:25:19	1
2939997	99	66	31,6	cyclictest	0	-21	swapper/1	21:55:31	1
2939996	99	66	2,57	cyclictest	2962985	-21	apt-get	20:40:11	0
2939996	99	66	1,45	cyclictest	3027454	-21	ld	22:15:30	0
2939997	99	65	56,7	cyclictest	2943843	-21	kworker/u4:4+events_unbound	20:02:38	1
2939997	99	65	56,7	cyclictest	2943843	-21	kworker/u4:4+events_unbound	20:02:38	1
2939997	99	65	4,25	cyclictest	3079032	-21	ssh	23:15:31	1
2939997	99	65	33,29	cyclictest	2960245	-21	kworker/u4:0+rpciod	20:30:37	1
2939997	99	65	30,6	cyclictest	0	-21	swapper/1	21:15:29	1
2939996	99	65	3,57	cyclictest	3104074	-21	apt-get	23:45:12	0
2939996	99	65	33,29	cyclictest	2969373	-21	aten_r7power_po	21:05:18	0
2939996	99	65	29,34	cyclictest	0	-21	swapper/0	22:55:18	0
2939996	99	65	1,38	cyclictest	3110552	-21	kworker/u4:4+rpciod	00:12:33	0
2939997	99	64	29,9	cyclictest	37	-21	kcompactd0	23:07:30	1
2939997	99	64	29,6	cyclictest	3089321	-21	kworker/u4:14-rpciod	23:55:33	1
2939997	99	64	28,6	cyclictest	0	-21	swapper/1	22:25:31	1
2939996	99	64	31,30	cyclictest	2939994	-21	cyclictest	00:30:25	0
2939996	99	64	28,34	cyclictest	2960281	-21	kworker/u4:0	20:29:59	0
2939996	99	64	10,31	cyclictest	0	-21	swapper/0	21:30:25	0
2939997	99	63	58,3	cyclictest	3123700	-21	kworker/u4:1+events_unbound	00:08:25	1
2939997	99	63	30,6	cyclictest	2957623	-21	unixbench_multi	20:15:39	1
2939997	99	63	29,5	cyclictest	3086567	-21	cron	23:25:01	1
2939997	99	63	29,5	cyclictest	3086567	-21	cron	23:25:00	1
2939997	99	63	28,6	cyclictest	0	-21	swapper/1	20:40:26	1
2939996	99	63	3,56	cyclictest	3018072	-21	apt-get	22:05:11	0
2939996	99	63	33,27	cyclictest	2952948	-21	aten_r7power_en	20:00:17	0
2939996	99	63	33,27	cyclictest	2952948	-21	aten_r7power_en	20:00:16	0
2939996	99	63	2,57	cyclictest	3122222	-21	ps	00:05:37	0
2939996	99	63	2,54	cyclictest	2964238	-21	apt-get	20:45:12	0
2939996	99	63	2,41	cyclictest	3000607	-21	apt-get	21:45:03	0
2939996	99	63	1,42	cyclictest	2949850	-21	run-parts	19:45:34	0
2939996	99	63	11,29	cyclictest	0	-21	swapper/0	20:15:29	0
2939997	99	62	57,3	cyclictest	2953933	-21	kworker/u4:6+events_unbound	20:22:43	1
2939997	99	62	30,5	cyclictest	0	-21	swapper/1	22:35:22	1
2939996	99	62	2,57	cyclictest	2955966	-21	ntpq	20:10:28	0
2939996	99	62	2,55	cyclictest	2958498	-21	ntpq	20:20:27	0
2939996	99	62	2,41	cyclictest	2971561	-21	ssh	21:10:36	0
2939996	99	62	2,38	cyclictest	3031783	-21	ntpq	22:20:29	0
2939996	99	62	1,42	cyclictest	3069644	-21	apt-get	23:05:15	0
2939996	99	62	1,40	cyclictest	0	-21	swapper/0	19:40:01	0
2939996	99	62	1,40	cyclictest	0	-21	swapper/0	19:40:00	0
2939997	99	61	25,8	cyclictest	2952814	-21	ls	20:00:02	1
2939996	99	61	3,54	cyclictest	3135054	-21	ps	00:20:35	0
2939996	99	61	30,28	cyclictest	3106174	-21	kworker/u4:6-rpciod	00:00:38	0
2939996	99	61	30,28	cyclictest	3106174	-21	kworker/u4:6-rpciod	00:00:38	0
2939996	99	61	30,28	cyclictest	0	-21	swapper/0	19:10:14	0
2939996	99	61	2,42	cyclictest	3040281	-21	ntpq	22:30:28	0
2939997	99	60	50,7	cyclictest	2998780	-21	kworker/u4:17+events_unbound	21:43:01	1
2939997	99	60	50,7	cyclictest	2998780	-21	kworker/u4:17+events_unbound	21:43:00	1
2939997	99	60	27,7	cyclictest	2967278	-21	netstat	20:55:22	1
2939996	99	60	53,5	cyclictest	2980376	-21	/usr/sbin/munin	21:20:41	0
2939996	99	60	3,54	cyclictest	3066086	-21	ntpq	23:00:27	0
2939996	99	60	32,26	cyclictest	2994414	-21	kworker/u4:16-rpciod	21:40:34	0
2939996	99	60	32,26	cyclictest	2994414	-21	kworker/u4:16-rpciod	21:40:33	0
2939996	99	60	30,26	cyclictest	0	-21	swapper/0	23:30:26	0
2939996	99	60	16,42	cyclictest	255	50	irq/23-42890000.ethernet	23:10:13	0
2939997	99	59	51,6	cyclictest	3089319	-21	kworker/u4:5+events_unbound	23:33:21	1
2939996	99	59	6,48	cyclictest	3099765	-21	apt-get	23:40:12	0
2939996	99	59	28,28	cyclictest	0	-21	swapper/0	21:25:38	0
2939996	99	59	26,30	cyclictest	0	-21	swapper/0	21:00:34	0
2939996	99	59	23,32	cyclictest	2939923	-21	kworker/u4:0-rpciod	19:55:01	0
2939996	99	59	1,41	cyclictest	3053303	-21	ntpq	22:45:32	0
2939996	99	59	1,40	cyclictest	3057670	-21	ssh	22:50:37	0
2939996	99	59	1,38	cyclictest	0	-21	swapper/0	23:35:29	0
2939996	99	59	1,37	cyclictest	3109216	-21	ssh	23:50:32	0
2939996	99	58	3,49	cyclictest	2952236	-21	ntpq	19:55:31	0
2939996	99	58	2,51	cyclictest	3035992	-21	ntpq	22:25:28	0
2939996	99	58	2,48	cyclictest	2947832	-21	apt-get	19:40:11	0
2939996	99	58	17,38	cyclictest	0	-21	swapper/0	22:40:00	0
2939996	99	57	3,50	cyclictest	2944672	-21	ntpq	19:25:30	0
2939996	99	57	1,36	cyclictest	2961038	-21	ntpq	20:30:28	0
2939997	99	56	28,6	cyclictest	0	-21	swapper/1	21:30:30	1
2939996	99	56	2,50	cyclictest	2954697	-21	ntpq	20:05:25	0
2939996	99	56	10,43	cyclictest	2993291	-21	ssh	21:35:42	0
2939996	99	55	1,51	cyclictest	2943334	-21	ntpq	19:20:33	0
2939996	99	55	1,51	cyclictest	2943334	-21	ntpq	19:20:33	0
2939996	99	54	1,50	cyclictest	2941964	-21	ntpq	19:15:27	0
2939997	99	53	44,5	cyclictest	0	-21	swapper/1	23:25:12	1
2939997	99	53	41,8	cyclictest	3052485	-21	dpkg	22:45:13	1
2939997	99	52	43,6	cyclictest	3098428	-21	sshd	23:38:20	1
2939997	99	52	38,11	cyclictest	3130220	-21	fschecks_count	00:15:20	1
2939997	99	51	40,7	cyclictest	3009211	-21	modprobe	21:55:00	1
2939997	99	50	40,7	cyclictest	2966551	-21	kworker/u4:11+events_unbound	21:05:00	1
2939997	99	49	40,6	cyclictest	2951070	-21	sendmail_mailqu	19:50:32	1
2939997	99	48	39,7	cyclictest	3027171	-21	gltestperf	22:15:22	1
2939997	99	47	39,5	cyclictest	3120022	-21	sshd	00:03:25	1
2939997	99	47	39,5	cyclictest	3120022	-21	sshd	00:03:25	1
2939997	99	47	38,6	cyclictest	2965313	-21	modprobe	20:49:59	1
2939997	99	47	28,14	cyclictest	0	-21	swapper/1	22:55:26	1
2939997	99	46	38,5	cyclictest	2955786	-21	gltestperf	20:10:22	1
2939997	99	45	36,7	cyclictest	2943029	-21	fschecks_count	19:20:27	1
2939997	99	45	36,7	cyclictest	2943029	-21	fschecks_count	19:20:27	1
2939997	99	45	36,7	cyclictest	1055	-21	sshd	21:12:55	1
2939997	99	45	35,7	cyclictest	2942677	-21	latency_hist	19:20:03	1
2939997	99	41	33,5	cyclictest	2943843	-21	kworker/u4:4-rpciod	19:35:19	1
2939997	99	41	33,5	cyclictest	2943843	-21	kworker/u4:4-rpciod	19:35:19	1
2939997	99	41	32,6	cyclictest	2953934	-21	kworker/u4:9+events_unbound	20:07:38	1
2939997	99	41	32,5	cyclictest	0	-21	swapper/1	19:10:23	1
2939997	99	39	31,5	cyclictest	0	-21	swapper/1	20:30:01	1
2939997	99	39	29,7	cyclictest	2969629	-21	fschecks_time	21:05:20	1
2939997	99	39	29,7	cyclictest	2949467	-21	gltestperf	19:45:19	1
2939997	99	34	24,7	cyclictest	0	-21	swapper/1	19:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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