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 highest latencies:

System rack7slot2.osadl.org (updated Mon Apr 27, 2026 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2380157	99	100	90,8	cyclictest	2383966	-21	kworker/u4:1+events_unbound	07:25:06	0
2380157	99	95	86,6	cyclictest	2487236	-21	kworker/u4:4+events_unbound	10:51:08	0
2380157	99	94	87,5	cyclictest	2439750	-21	kworker/u4:0+events_unbound	09:55:51	0
2380157	99	91	80,9	cyclictest	2382668	-21	kworker/u4:11+events_unbound	07:55:14	0
2380157	99	84	78,4	cyclictest	2522057	-21	kworker/u4:8+events_unbound	11:46:23	0
2380157	99	83	76,5	cyclictest	2553172	-21	kworker/u4:0+events_unbound	11:56:23	0
2380157	99	81	73,6	cyclictest	2522716	-21	kworker/u4:12+events_unbound	11:21:14	0
2380157	99	81	54,19	cyclictest	53	-21	kswapd0	11:15:12	0
2380157	99	79	69,8	cyclictest	2504962	-21	kworker/u4:10+events_unbound	11:01:08	0
2380157	99	79	64,5	cyclictest	2465652	-21	kworker/u4:12+events_unbound	10:15:57	0
2380157	99	76	53,15	cyclictest	53	-21	kswapd0	11:50:12	0
2380157	99	76	53,15	cyclictest	53	-21	kswapd0	11:50:12	0
2380157	99	74	67,5	cyclictest	2474560	-21	kworker/u4:8+events_unbound	10:46:05	0
2380157	99	73	65,6	cyclictest	2588073	-21	kworker/u4:0+events_unbound	12:36:30	0
2380157	99	71	65,4	cyclictest	2389167	-21	kworker/u4:4+events_unbound	08:20:01	0
2380157	99	70	63,5	cyclictest	2380094	-21	kworker/u4:5+events_unbound	07:45:00	0
2380157	99	66	60,4	cyclictest	2380092	-21	kworker/u4:1+events_unbound	07:10:02	0
2380157	99	66	60,4	cyclictest	2380092	-21	kworker/u4:1+events_unbound	07:10:01	0
2380158	99	64	51,10	cyclictest	2443182	-21	systemd	09:45:42	1
2380157	99	64	56,6	cyclictest	2478998	-21	kworker/u4:0+events_unbound	10:41:01	0
2380157	99	64	48,6	cyclictest	2435379	-21	kworker/u4:13+events_unbound	09:42:43	0
2380157	99	62	50,5	cyclictest	2561439	-21	kworker/u4:7+events_unbound	12:01:23	0
2380158	99	61	46,11	cyclictest	53	-21	kswapd0	11:50:11	1
2380158	99	61	46,11	cyclictest	53	-21	kswapd0	11:50:10	1
2380157	99	61	54,5	cyclictest	2474556	-21	kworker/u4:2+events_unbound	11:00:01	0
2380158	99	60	55,3	cyclictest	2522057	-21	kworker/u4:8+events_unbound	11:36:21	1
2380158	99	59	50,5	cyclictest	2481772	-21	/usr/sbin/munin	10:30:22	1
2380158	99	58	48,7	cyclictest	2586038	-21	/usr/sbin/munin	12:30:15	1
2380158	99	58	1,49	cyclictest	2516682	-21	sh	11:10:25	1
2380158	99	58	1,49	cyclictest	2516682	-21	sh	11:10:24	1
2380158	99	57	49,5	cyclictest	0	-21	swapper/1	10:35:38	1
2380157	99	57	42,13	cyclictest	2486057	-21	if_eth0	10:35:24	0
2380157	99	57	40,15	cyclictest	15	1	ktimers/0	11:32:29	0
2380158	99	56	46,7	cyclictest	2569454	-21	/usr/sbin/munin	12:10:37	1
2380158	99	56	4,39	cyclictest	2468850	-21	sh	10:15:34	1
2380157	99	56	49,5	cyclictest	2385327	-21	kworker/u4:15+events_unbound	07:35:09	0
2380157	99	56	49,5	cyclictest	2385327	-21	kworker/u4:15+events_unbound	07:35:08	0
2380157	99	56	39,6	cyclictest	2461269	-21	kworker/u4:8+events_unbound	10:07:00	0
2380158	99	55	49,4	cyclictest	2418264	-21	kworker/u4:15+events_unbound	09:20:38	1
2380158	99	55	47,6	cyclictest	2543420	-21	timerwakeupswit	11:40:40	1
2380157	99	55	48,5	cyclictest	2536054	-21	kworker/u4:0+events_unbound	11:40:19	0
2380157	99	55	46,7	cyclictest	2531630	-21	kworker/u4:4+events_unbound	11:27:59	0
2380157	99	54	47,5	cyclictest	2474556	-21	kworker/u4:2+events_unbound	10:24:01	0
2380157	99	54	47,5	cyclictest	2474556	-21	kworker/u4:2+events_unbound	10:24:01	0
2380157	99	54	47,5	cyclictest	2425379	-21	/usr/sbin/munin	09:25:38	0
2380157	99	54	46,5	cyclictest	0	-21	swapper/0	12:20:31	0
2380158	99	53	20,20	cyclictest	0	-21	swapper/1	12:08:12	1
2380157	99	53	46,4	cyclictest	2380344	-21	aten2__	07:10:16	0
2380157	99	53	45,6	cyclictest	2404500	-21	kworker/u4:4+events_unbound	09:30:02	0
2380157	99	53	45,5	cyclictest	2396814	-21	kworker/u4:2+events_unbound	08:35:00	0
2380158	99	52	42,7	cyclictest	0	-21	swapper/1	10:25:19	1
2380158	99	52	40,10	cyclictest	2433794	-21	/usr/sbin/munin	09:35:24	1
2380158	99	52	17,12	cyclictest	0	-21	swapper/1	09:50:26	1
2380157	99	52	41,8	cyclictest	2408334	-21	modprobe	09:00:01	0
2380157	99	52	24,7	cyclictest	2570961	-21	kworker/u4:2+events_unbound	12:15:38	0
2380158	99	51	43,6	cyclictest	2492329	-21	kworker/u4:12+events_unbound	10:50:00	1
2380158	99	51	42,6	cyclictest	2391707	-21	kworker/u4:14+events_unbound	08:35:28	1
2380158	99	51	17,17	cyclictest	0	-21	swapper/1	11:25:27	1
2380157	99	51	8,37	cyclictest	2538648	-21	ntpq	11:35:31	0
2380157	99	51	44,5	cyclictest	2375000	-21	kworker/u4:2+events_unbound	07:20:05	0
2380157	99	51	44,5	cyclictest	15	1	ktimers/0	09:47:10	0
2380157	99	51	43,6	cyclictest	2553175	-21	kworker/u4:4+events_unbound	12:07:00	0
2380157	99	51	41,7	cyclictest	2394659	-21	df_abs	08:05:16	0
2380157	99	51	37,5	cyclictest	2570961	-21	kworker/u4:2+events_unbound	12:27:59	0
2380157	99	51	37,5	cyclictest	2570961	-21	kworker/u4:2+events_unbound	12:27:58	0
2380158	99	50	41,5	cyclictest	2534083	-21	irqstats	11:30:22	1
2380158	99	50	40,7	cyclictest	0	-21	swapper/1	10:50:35	1
2380158	99	50	39,9	cyclictest	2408309	-21	kworker/u4:1+events_unbound	09:10:36	1
2380158	99	50	16,10	cyclictest	0	-21	swapper/1	09:30:24	1
2380157	99	50	42,5	cyclictest	2463776	-21	aten_r7power_vo	10:10:16	0
2380158	99	49	9,14	cyclictest	2582296	-21	ntpq	12:25:28	1
2380158	99	49	9,14	cyclictest	2582296	-21	ntpq	12:25:28	1
2380158	99	49	44,3	cyclictest	2403198	-21	kworker/u4:12+events_unbound	09:00:01	1
2380158	99	49	41,6	cyclictest	2472646	-21	/usr/sbin/munin	10:20:17	1
2380158	99	49	41,6	cyclictest	2472646	-21	/usr/sbin/munin	10:20:16	1
2380158	99	49	37,6	cyclictest	0	-21	swapper/1	10:00:37	1
2380158	99	49	21,9	cyclictest	2556162	-21	sh	11:55:34	1
2380157	99	49	42,5	cyclictest	2411549	-21	fschecks_count	09:10:20	0
2380157	99	49	31,16	cyclictest	2419784	-21	sh	09:20:01	0
2380158	99	48	39,7	cyclictest	2396814	-21	kworker/u4:2+events_unbound	09:00:35	1
2380158	99	48	25,20	cyclictest	0	-21	swapper/1	11:00:11	1
2380157	99	48	39,6	cyclictest	2396099	-21	gltestperf	08:10:19	0
2380157	99	48	31,5	cyclictest	2588074	-21	kworker/u4:1+events_unbound	12:33:42	0
2380157	99	48	29,4	cyclictest	2382691	-21	modprobe	07:20:01	0
2380157	99	48	25,20	cyclictest	0	-21	swapper/0	09:55:01	0
2380158	99	47	9,11	cyclictest	2392534	-21	ntpq	07:55:34	1
2380158	99	47	8,16	cyclictest	2461484	-21	ssh	10:07:02	1
2380158	99	47	7,16	cyclictest	2506701	-21	ssh	10:59:32	1
2380158	99	47	41,4	cyclictest	2577996	-21	ntp_offset	12:20:30	1
2380158	99	47	41,4	cyclictest	2573410	-21	kernelversion	12:15:22	1
2380158	99	47	41,4	cyclictest	2451461	-21	proc_pri	09:55:35	1
2380158	99	47	40,5	cyclictest	2550721	-21	latency_hist	11:50:02	1
2380158	99	47	39,6	cyclictest	2560237	-21	grep	12:00:21	1
2380158	99	47	39,5	cyclictest	2394867	-21	gltestperf	08:05:19	1
2380157	99	47	40,5	cyclictest	2461907	-21	kworker/u4:11+events_unbound	10:27:40	0
2380157	99	47	38,7	cyclictest	2570961	-21	kworker/u4:2+events_unbound	12:15:01	0
2380157	99	47	38,6	cyclictest	2390467	-21	latency_hist	07:50:00	0
2380157	99	47	29,6	cyclictest	2487236	-21	kworker/u4:4+events_unbound	11:10:40	0
2380157	99	47	29,6	cyclictest	2487236	-21	kworker/u4:4+events_unbound	11:10:39	0
2380158	99	46	39,5	cyclictest	2397998	-21	unixbench_multi	08:15:38	1
2380158	99	46	38,6	cyclictest	2490142	-21	sed	10:40:19	1
2380158	99	46	37,6	cyclictest	0	-21	swapper/1	09:15:35	1
2380158	99	46	37,6	cyclictest	0	-21	swapper/1	08:25:26	1
2380157	99	46	37,7	cyclictest	2403969	-21	sd-accept	08:40:26	0
2380157	99	46	34,9	cyclictest	0	-21	swapper/0	09:35:16	0
2380157	99	46	32,8	cyclictest	2391721	-21	kworker/u4:13	07:55:00	0
2380157	99	46	32,8	cyclictest	2391721	-21	kworker/u4:13	07:55:00	0
2380158	99	45	8,11	cyclictest	2437686	-21	ssh	09:40:18	1
2380158	99	45	5,15	cyclictest	2525543	-21	ntpq	11:20:29	1
2380158	99	45	5,14	cyclictest	2428027	-21	ssh	09:29:16	1
2380158	99	45	38,5	cyclictest	2410094	-21	fschecks_time	09:05:20	1
2380158	99	45	36,6	cyclictest	0	-21	swapper/1	10:10:24	1
2380158	99	45	34,7	cyclictest	0	-21	swapper/1	12:35:29	1
2380157	99	45	37,6	cyclictest	2385735	-21	df_abs	07:30:15	0
2380157	99	45	36,5	cyclictest	2419791	-21	apt-get	09:20:10	0
2380158	99	44	6,14	cyclictest	2513989	-21	ssh	11:07:14	1
2380158	99	44	38,4	cyclictest	0	-21	swapper/1	11:15:42	1
2380158	99	44	36,6	cyclictest	2395763	-21	cut	08:10:15	1
2380158	99	44	35,5	cyclictest	2385324	-21	kworker/u4:10-rpciod	07:35:16	1
2380158	99	44	35,5	cyclictest	2385324	-21	kworker/u4:10-rpciod	07:35:15	1
2380158	99	44	34,8	cyclictest	2385348	-21	kworker/u4:14	07:29:59	1
2380157	99	44	36,6	cyclictest	2400591	-21	unixbench_multi	08:25:39	0
2380157	99	44	35,5	cyclictest	0	-21	swapper/0	10:30:27	0
2380157	99	44	2,33	cyclictest	2455642	-21	ntpq	10:00:27	0
2380158	99	43	35,5	cyclictest	2405440	-21	sendmail_mailqu	08:45:37	1
2380157	99	43	37,4	cyclictest	2512204	-21	gltestperf	11:05:23	0
2380158	99	42	34,5	cyclictest	2405990	-21	aten2__	08:50:17	1
2380158	99	42	34,5	cyclictest	2380094	-21	kworker/u4:5-rpciod	07:45:37	1
2380158	99	42	33,5	cyclictest	2369831	-21	kworker/u4:16-rpciod	07:20:02	1
2380158	99	42	32,6	cyclictest	0	-21	swapper/1	08:45:01	1
2380157	99	42	36,4	cyclictest	2402330	-21	df_abs	08:35:16	0
2380157	99	42	35,5	cyclictest	1062	-21	lldpd	09:06:11	0
2380157	99	42	34,5	cyclictest	2408798	-21	fschecks_count	09:00:19	0
2380157	99	42	34,5	cyclictest	2380094	-21	kworker/u4:5-rpciod	08:05:02	0
2380157	99	42	30,10	cyclictest	2407063	-21	kworker/u4:11	08:55:00	0
2380158	99	41	33,6	cyclictest	2391508	-21	timerandwakeup	07:50:37	1
2380158	99	41	33,6	cyclictest	2391508	-21	timerandwakeup	07:50:36	1
2380158	99	40	35,3	cyclictest	2400661	-21	kworker/u4:8+events_unbound	08:30:27	1
2380158	99	40	32,5	cyclictest	0	-21	swapper/1	07:20:16	1
2380158	99	40	30,8	cyclictest	2388510	-21	head	07:40:20	1
2380158	99	40	23,14	cyclictest	2380315	-21	apt-get	07:10:12	1
2380158	99	39	28,9	cyclictest	0	-21	swapper/1	07:30:33	1
2380157	99	39	30,6	cyclictest	2398347	-21	aten_r7power_cu	08:20:16	0
2380158	99	38	29,6	cyclictest	0	-21	swapper/1	08:00:18	1
2380158	99	38	27,8	cyclictest	0	-21	swapper/1	08:25:01	1
2380157	99	37	29,5	cyclictest	2405008	-21	fschecks_time	08:45:19	0
2380158	99	32	24,5	cyclictest	0	-21	swapper/1	07:10:02	1
2380158	99	32	24,5	cyclictest	0	-21	swapper/1	07:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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