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 792 highest latencies:

System rack7slot2.osadl.org (updated Mon Sep 14, 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
3237711	99	116	95,7	cyclictest	3423888	-21	kworker/u4:15+events_unbound	00:13:40	0
3237711	99	114	104,8	cyclictest	3343531	-21	kworker/u4:6+events_unbound	22:47:45	0
3237711	99	102	89,9	cyclictest	53	-21	kswapd0	22:20:11	0
3237711	99	97	92,4	cyclictest	3280183	-21	kworker/u4:5-rpciod	21:26:50	0
3237711	99	97	89,6	cyclictest	3414827	-21	kworker/u4:6+events_unbound	23:57:53	0
3237711	99	92	86,4	cyclictest	19	1	rcuc/0	19:52:06	0
3237712	99	91	82,7	cyclictest	3307615	-21	kworker/u4:10+events_unbound	21:52:30	1
3237711	99	84	76,6	cyclictest	3383788	-21	kworker/u4:6+events_unbound	23:17:49	0
3237711	99	82	74,6	cyclictest	3365675	-21	kworker/u4:12+events_unbound	22:57:47	0
3237711	99	81	73,6	cyclictest	3392855	-21	kworker/u4:13+events_unbound	23:27:53	0
3237711	99	80	71,7	cyclictest	3423885	-21	kworker/u4:8+events_unbound	00:28:37	0
3237712	99	72	38,31	cyclictest	3360108	-21	grep	22:50:38	1
3237712	99	71	34,6	cyclictest	0	-21	swapper/1	19:20:30	1
3237712	99	71	30,7	cyclictest	0	-21	swapper/1	23:30:22	1
3237711	99	71	54,6	cyclictest	3348143	-21	kworker/u4:2+events_unbound	22:37:42	0
3237712	99	70	40,27	cyclictest	3351095	-21	ssh	22:40:38	1
3237712	99	70	33,8	cyclictest	3368296	-21	ssh	23:00:18	1
3237711	99	70	62,3	cyclictest	3450319	-21	kworker/u4:10+events_unbound	00:33:52	0
3237711	99	70	48,16	cyclictest	3321351	-21	ssh	22:07:47	0
3237712	99	68	2,32	cyclictest	37	-21	kcompactd0	21:30:16	1
3237712	99	67	57,7	cyclictest	3382381	-21	sh	23:15:42	1
3237712	99	67	33,7	cyclictest	3378250	-21	unixbench_multi	23:10:45	1
3237712	99	67	28,7	cyclictest	0	-21	swapper/1	23:55:24	1
3237711	99	67	49,6	cyclictest	53	-21	kswapd0	00:35:08	0
3237712	99	66	33,6	cyclictest	3261035	-21	sh	20:40:00	1
3237712	99	66	32,6	cyclictest	0	-21	swapper/1	22:55:40	1
3237712	99	65	35,4	cyclictest	3388329	-21	kworker/u4:9-rpciod	23:25:40	1
3237712	99	65	3,22	cyclictest	3358232	-21	sh	22:49:05	1
3237711	99	65	58,5	cyclictest	3343533	-21	kworker/u4:8+events_unbound	23:07:49	0
3237711	99	65	58,5	cyclictest	3343533	-21	kworker/u4:8+events_unbound	23:07:49	0
3237711	99	65	57,6	cyclictest	3249342	-21	kworker/u4:14+events_unbound	20:17:12	0
3237712	99	64	56,6	cyclictest	53	-21	kswapd0	22:00:00	1
3237711	99	64	55,6	cyclictest	3348144	-21	kworker/u4:3-events_power_efficient	22:51:17	0
3237711	99	64	47,13	cyclictest	3408627	-21	if_eth0	23:45:21	0
3237711	99	63	40,16	cyclictest	3237708	-21	cyclictest	23:10:06	0
3237712	99	62	30,6	cyclictest	0	-21	swapper/1	21:25:44	1
3237711	99	61	53,6	cyclictest	0	-21	swapper/0	00:00:21	0
3237711	99	61	53,6	cyclictest	0	-21	swapper/0	00:00:20	0
3237711	99	61	53,5	cyclictest	0	-21	swapper/0	21:30:22	0
3237711	99	61	47,5	cyclictest	3289317	-21	kworker/u4:9+events_unbound	21:47:29	0
3237711	99	60	43,10	cyclictest	3316765	-21	kworker/u4:16-rpciod	22:10:58	0
3237712	99	59	51,6	cyclictest	3440239	-21	mailstats	00:20:36	1
3237711	99	58	44,6	cyclictest	3414831	-21	kworker/u4:11+events_unbound	23:53:45	0
3237711	99	57	43,10	cyclictest	0	-21	swapper/0	19:40:15	0
3237711	99	57	34,20	cyclictest	3238102	-21	fschecks_count	19:10:21	0
3237711	99	57	14,27	cyclictest	0	-21	swapper/0	22:15:29	0
3237712	99	56	47,7	cyclictest	3316765	-21	kworker/u4:16+events_unbound	22:27:40	1
3237712	99	56	43,9	cyclictest	0	-21	swapper/1	21:35:38	1
3237711	99	56	43,5	cyclictest	3242791	-21	kworker/u4:11+events_unbound	19:30:01	0
3237711	99	56	37,17	cyclictest	3259869	-21	latency_hist	20:35:01	0
3237711	99	55	45,8	cyclictest	3311533	-21	kworker/u4:11+events_unbound	22:02:32	0
3237712	99	54	44,6	cyclictest	3242811	-21	kworker/u4:7	19:30:01	1
3237711	99	54	47,5	cyclictest	3348142	-21	kworker/u4:0+events_unbound	23:42:57	0
3237711	99	54	46,6	cyclictest	3379269	-21	kworker/u4:5+events_unbound	23:22:52	0
3237711	99	54	37,15	cyclictest	3443413	-21	grep	00:25:01	0
3237711	99	54	31,17	cyclictest	3400024	-21	ntpq	23:35:33	0
3237712	99	53	43,7	cyclictest	3408451	-21	fschecks_count	23:45:19	1
3237711	99	53	22,25	cyclictest	256	50	irq/23-42890000.ethernet	20:35:11	0
3237712	99	52	45,5	cyclictest	3267077	-21	sendmail_mailqu	21:00:36	1
3237712	99	52	45,5	cyclictest	3239880	-21	sendmail_mailqu	19:15:35	1
3237712	99	52	39,8	cyclictest	3338961	-21	kworker/u4:5-rpciod	22:32:16	1
3237711	99	52	45,5	cyclictest	3238943	-21	kworker/u4:8+events_unbound	19:50:00	0
3237711	99	52	40,8	cyclictest	3263583	-21	cron	20:50:00	0
3237712	99	51	44,5	cyclictest	3320661	-21	kworker/u4:17-rpciod	22:10:18	1
3237712	99	51	43,5	cyclictest	3303059	-21	kworker/u4:1+events_unbound	22:20:13	1
3237712	99	51	41,8	cyclictest	3279512	-21	/usr/sbin/munin	21:20:44	1
3237712	99	51	1,41	cyclictest	3421798	-21	diskstats	00:00:24	1
3237712	99	51	1,41	cyclictest	3421798	-21	diskstats	00:00:23	1
3237711	99	51	40,8	cyclictest	3249332	-21	kworker/u4:13+events_unbound	20:28:46	0
3237712	99	50	45,3	cyclictest	3450315	-21	kworker/u4:3+events_unbound	00:38:55	1
3237711	99	50	42,6	cyclictest	3242791	-21	kworker/u4:11+events_unbound	20:42:17	0
3237711	99	50	42,6	cyclictest	3242791	-21	kworker/u4:11+events_unbound	20:42:17	0
3237711	99	50	4,16	cyclictest	3240240	-21	modprobe	19:20:00	0
3237712	99	49	39,7	cyclictest	3423888	-21	kworker/u4:15-rpciod	00:05:39	1
3237711	99	49	42,5	cyclictest	3253267	-21	kworker/u4:18+events_unbound	20:57:20	0
3237711	99	49	3,34	cyclictest	3273599	-21	ssh	21:15:16	0
3237711	99	49	31,16	cyclictest	3351381	-21	timerwakeupswit	22:40:42	0
3237711	99	49	29,13	cyclictest	0	-21	swapper/0	20:05:10	0
3237712	99	48	42,4	cyclictest	3388329	-21	kworker/u4:9+events_unbound	23:23:45	1
3237712	99	48	42,4	cyclictest	3348303	-21	sshd	22:37:41	1
3237712	99	48	42,4	cyclictest	3274018	-21	gltestperf	21:15:23	1
3237711	99	48	40,6	cyclictest	3242790	-21	kworker/u4:6+events_unbound	20:20:44	0
3237711	99	48	40,5	cyclictest	3296382	-21	df_abs	21:40:17	0
3237711	99	48	38,8	cyclictest	3305200	-21	aten2__	21:50:17	0
3237711	99	48	32,7	cyclictest	3298472	-21	kworker/u4:12+events_unbound	22:25:45	0
3237712	99	47	40,5	cyclictest	3262337	-21	munin-plugin-st	20:45:00	1
3237712	99	47	40,5	cyclictest	3262337	-21	munin-plugin-st	20:45:00	1
3237712	99	47	39,6	cyclictest	400	-21	systemd-logind	21:12:22	1
3237712	99	47	39,6	cyclictest	3331825	-21	sendmail	22:20:00	1
3237712	99	47	2,36	cyclictest	3431129	-21	ntpq	00:10:33	1
3237711	99	47	39,6	cyclictest	3250601	-21	kworker/u4:15+events_unbound	21:13:45	0
3237711	99	47	34,6	cyclictest	3365675	-21	kworker/u4:12+events_unbound	23:01:45	0
3237712	99	46	39,5	cyclictest	3319628	-21	uname	22:05:39	1
3237712	99	46	39,5	cyclictest	3249342	-21	kworker/u4:14+events_unbound	20:07:07	1
3237712	99	46	38,5	cyclictest	3259426	-21	timerandwakeup	20:30:38	1
3237712	99	46	38,5	cyclictest	3255070	-21	fschecks_time	20:15:21	1
3237712	99	46	35,8	cyclictest	3435397	-21	/usr/sbin/munin	00:15:24	1
3237711	99	46	4,29	cyclictest	3437117	-21	ssh	00:17:13	0
3237711	99	46	39,5	cyclictest	3240866	-21	gltestperf	19:20:21	0
3237711	99	46	36,8	cyclictest	3278698	-21	if_eth0	21:20:24	0
3237711	99	46	36,6	cyclictest	0	-21	swapper/0	23:30:29	0
3237711	99	46	35,7	cyclictest	3267085	-21	mailstats	21:00:36	0
3237712	99	45	37,7	cyclictest	3449174	-21	mailstats	00:30:39	1
3237712	99	45	37,6	cyclictest	3289316	-21	kworker/u4:7+events_unbound	21:42:28	1
3237712	99	45	35,7	cyclictest	3252096	-21	latency_hist	20:05:01	1
3237712	99	45	35,7	cyclictest	3250449	-21	timerwakeupswit	19:55:37	1
3237712	99	45	24,19	cyclictest	53	-21	kswapd0	23:35:18	1
3237711	99	45	35,7	cyclictest	3251173	-21	fschecks_time	20:00:21	0
3237711	99	45	33,10	cyclictest	0	-21	swapper/0	21:35:16	0
3237711	99	45	20,15	cyclictest	3225015	-21	kworker/u4:7-rpciod	19:10:00	0
3237712	99	44	37,5	cyclictest	3413844	-21	unixbench_singl	23:50:39	1
3237712	99	44	35,6	cyclictest	3444904	-21	unixbench_multi	00:25:38	1
3237712	99	44	34,7	cyclictest	3300895	-21	df_abs	21:45:17	1
3237711	99	44	37,5	cyclictest	3341508	-21	fschecks_count	22:30:24	0
3237711	99	44	36,5	cyclictest	3427105	-21	timerwakeupswit	00:05:40	0
3237711	99	44	35,7	cyclictest	3250518	-21	unixbench_multi	19:55:37	0
3237711	99	44	35,7	cyclictest	3243250	-21	fschecks_count	19:30:20	0
3237711	99	44	23,19	cyclictest	0	-21	swapper/0	20:50:17	0
3237712	99	43	36,5	cyclictest	3315181	-21	/usr/sbin/munin	22:00:41	1
3237712	99	43	36,5	cyclictest	3265063	-21	aten2__	20:55:15	1
3237712	99	43	36,4	cyclictest	3268675	-21	systemd	21:07:21	1
3237712	99	43	34,6	cyclictest	3250601	-21	kworker/u4:15+events_unbound	20:52:19	1
3237711	99	43	34,7	cyclictest	3253725	-21	fschecks_count	20:10:19	0
3237712	99	42	37,4	cyclictest	3245385	-21	basename	19:40:00	1
3237712	99	42	36,4	cyclictest	3376662	-21	ssh	23:10:02	1
3237712	99	42	36,4	cyclictest	3376662	-21	ssh	23:10:01	1
3237712	99	42	34,6	cyclictest	3249332	-21	kworker/u4:13+events_unbound	20:47:17	1
3237711	99	42	33,7	cyclictest	3309864	-21	cpu	21:55:17	0
3237711	99	42	33,6	cyclictest	3267841	-21	fschecks_count	21:05:18	0
3237712	99	41	35,4	cyclictest	0	-21	swapper/1	19:10:42	1
3237712	99	41	34,5	cyclictest	3247165	-21	fschecks_count	19:45:22	1
3237712	99	41	32,6	cyclictest	0	-21	swapper/1	20:10:26	1
3237712	99	41	32,6	cyclictest	0	-21	swapper/1	19:50:20	1
3237711	99	41	29,8	cyclictest	0	-21	swapper/0	19:35:44	0
3237712	99	40	33,5	cyclictest	3245900	-21	fschecks_count	19:40:33	1
3237712	99	40	31,6	cyclictest	0	-21	swapper/1	23:40:12	1
3237712	99	40	29,9	cyclictest	3258231	-21	timerwakeupswit	20:25:38	1
3237712	99	39	32,5	cyclictest	1069	-21	lldpd	20:20:38	1
3237712	99	38	30,6	cyclictest	3243981	-21	unixbench_multi	19:30:39	1
3237712	99	32	24,5	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