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 Fri Feb 27, 2026 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3976407	99	104	96,6	cyclictest	3982836	-21	kworker/u4:16+events_unbound	21:02:20	0
3976408	99	97	2,45	cyclictest	4099204	-21	ssh	22:55:29	1
3976407	99	86	55,25	cyclictest	54	-21	kswapd0	22:40:09	0
3976408	99	83	75,6	cyclictest	4049277	-21	kworker/u4:5+events_unbound	22:12:30	1
3976407	99	83	78,3	cyclictest	15	1	ktimers/0	20:47:32	0
3976408	99	78	70,6	cyclictest	4117850	-21	kworker/u4:0+events_unbound	23:37:41	1
3976408	99	76	70,4	cyclictest	4156496	-21	kworker/u4:10+events_unbound	00:27:45	1
3976408	99	73	65,5	cyclictest	4143992	-21	kworker/u4:16+events_unbound	23:47:43	1
3976408	99	72	64,6	cyclictest	4000997	-21	kworker/u4:26+events_unbound	21:12:21	1
3976408	99	71	64,5	cyclictest	4019171	-21	kworker/u4:2+events_unbound	21:32:23	1
3976408	99	70	63,5	cyclictest	4130892	-21	kworker/u4:5+events_unbound	23:42:41	1
3976408	99	70	63,5	cyclictest	4130892	-21	kworker/u4:5+events_unbound	23:42:41	1
3976407	99	68	60,6	cyclictest	4120317	-21	fschecks_count	23:20:18	0
3976408	99	65	44,7	cyclictest	4160883	-21	kworker/u4:3+events_unbound	00:37:47	1
3976408	99	64	58,4	cyclictest	3743422	-21	kworker/u4:0+events_unbound	19:20:00	1
3976408	99	64	56,6	cyclictest	4117851	-21	kworker/u4:1+events_unbound	23:17:36	1
3976408	99	61	52,7	cyclictest	4074774	-21	kworker/u4:4+events_unbound	22:27:31	1
3976408	99	60	52,6	cyclictest	4002269	-21	kworker/u4:2+events_unbound	20:52:19	1
3976407	99	60	51,5	cyclictest	0	-21	swapper/0	21:15:30	0
3976407	99	60	32,18	cyclictest	255	50	irq/23-42890000.ethernet	00:30:09	0
3976408	99	59	44,8	cyclictest	0	-21	swapper/1	23:05:38	1
3976408	99	57	46,8	cyclictest	4079132	-21	kworker/u4:6+events_unbound	22:35:01	1
3976408	99	57	44,11	cyclictest	4109134	-21	kworker/u4:4+events_unbound	23:10:12	1
3976407	99	57	48,6	cyclictest	4025102	-21	latency_hist	21:30:02	0
3976407	99	57	48,6	cyclictest	4004675	-21	unixbench-2d	20:55:36	0
3976407	99	56	26,19	cyclictest	4116275	-21	kernelversion	23:15:23	0
3976407	99	56	14,5	cyclictest	15	1	ktimers/0	22:55:32	0
3976407	99	55	50,3	cyclictest	255	50	irq/23-42890000.ethernet	23:05:24	0
3976407	99	55	41,10	cyclictest	3978953	-21	apt-get	19:20:08	0
3976407	99	55	35,9	cyclictest	0	-21	swapper/0	20:35:12	0
3976408	99	54	47,5	cyclictest	3981573	-21	kworker/u4:7+events_unbound	20:32:18	1
3976408	99	54	46,6	cyclictest	4047511	-21	diskmemload	21:55:27	1
3976408	99	54	46,6	cyclictest	3994508	-21	kworker/u4:19+events_unbound	21:07:20	1
3976408	99	54	46,6	cyclictest	3981575	-21	kworker/u4:15+events_unbound	20:02:15	1
3976408	99	54	44,7	cyclictest	3981573	-21	kworker/u4:7+events_unbound	20:07:16	1
3976408	99	54	42,7	cyclictest	3976406	-21	cyclictest	00:03:21	1
3976408	99	54	40,11	cyclictest	4174412	-21	sh	00:23:05	1
3976407	99	54	33,19	cyclictest	4154045	-21	cron	00:00:01	0
3976408	99	53	45,6	cyclictest	3981573	-21	kworker/u4:7+events_unbound	20:17:17	1
3976408	99	53	45,5	cyclictest	3985413	-21	kworker/u4:8+events_unbound	19:57:15	1
3976408	99	53	44,6	cyclictest	3998344	-21	kworker/u4:22+events_unbound	20:47:18	1
3976408	99	53	43,8	cyclictest	3983230	-21	df_abs	19:35:16	1
3976408	99	53	43,6	cyclictest	4145743	-21	dpkg	23:50:11	1
3976408	99	53	37,4	cyclictest	4053032	-21	kworker/u4:6+events_unbound	22:07:29	1
3976407	99	53	45,5	cyclictest	4063776	-21	cat	22:15:01	0
3976407	99	53	44,6	cyclictest	54	-21	kswapd0	22:40:00	0
3976408	99	52	44,6	cyclictest	4031725	-21	kworker/u4:13+events_unbound	22:02:28	1
3976408	99	52	43,7	cyclictest	4160886	-21	kworker/u4:6+events_unbound	00:07:45	1
3976407	99	52	45,5	cyclictest	4138176	-21	/usr/sbin/munin	23:40:38	0
3976407	99	52	45,5	cyclictest	4138176	-21	/usr/sbin/munin	23:40:37	0
3976407	99	52	43,7	cyclictest	4092225	-21	kworker/u4:9+events_unbound	22:52:33	0
3976407	99	52	43,7	cyclictest	4000997	-21	kworker/u4:26-rpciod	21:10:16	0
3976407	99	52	41,7	cyclictest	4003556	-21	cron	20:55:01	0
3976407	99	52	41,5	cyclictest	3967628	-21	kworker/u4:3+events_unbound	19:39:44	0
3976408	99	51	5,32	cyclictest	4163649	-21	ssh	00:10:25	1
3976408	99	51	45,4	cyclictest	4165252	-21	kworker/u4:4+events_unbound	00:32:00	1
3976408	99	51	42,7	cyclictest	4087996	-21	ssh	22:42:30	1
3976408	99	51	42,7	cyclictest	3977630	-21	kworker/u4:12+events_unbound	19:27:14	1
3976407	99	51	6,15	cyclictest	0	-21	swapper/0	20:00:11	0
3976407	99	51	46,4	cyclictest	4117855	-21	kworker/u4:5+events_unbound	23:25:59	0
3976407	99	51	44,5	cyclictest	3967628	-21	kworker/u4:3+events_unbound	19:25:05	0
3976407	99	51	43,6	cyclictest	4178163	-21	ssh	00:27:11	0
3976407	99	51	42,7	cyclictest	410	-21	systemd-logind	22:17:30	0
3976408	99	50	43,4	cyclictest	4013388	-21	unixbench_singl	21:15:42	1
3976408	99	50	42,5	cyclictest	3999476	-21	timerandwakeup	20:35:41	1
3976408	99	50	41,6	cyclictest	0	-21	swapper/1	21:20:39	1
3976408	99	50	39,8	cyclictest	4121047	-21	switchtime	23:20:37	1
3976408	99	50	37,10	cyclictest	4007419	-21	diskmemload	21:35:15	1
3976407	99	50	40,8	cyclictest	4133178	-21	fschecks_count	23:35:19	0
3976407	99	50	40,6	cyclictest	0	-21	swapper/0	22:45:31	0
3976407	99	50	36,9	cyclictest	4020585	-21	modprobe	21:25:01	0
3976408	99	49	41,5	cyclictest	4081924	-21	ntpq	22:35:27	1
3976407	99	49	43,4	cyclictest	0	-21	swapper/0	21:37:25	0
3976407	99	49	43,3	cyclictest	0	-21	swapper/0	22:20:19	0
3976407	99	49	40,6	cyclictest	4184777	-21	/usr/sbin/munin	00:35:17	0
3976407	99	49	39,8	cyclictest	388	-21	dbus-daemon	21:47:24	0
3976408	99	48	39,5	cyclictest	0	-21	swapper/1	22:15:40	1
3976407	99	48	40,6	cyclictest	4113502	-21	kworker/u4:8+events_unbound	23:12:36	0
3976407	99	48	40,6	cyclictest	4035520	-21	kworker/u4:14+events_unbound	21:42:59	0
3976407	99	48	40,5	cyclictest	4025522	-21	/usr/sbin/munin	21:30:19	0
3976407	99	48	40,5	cyclictest	37	-21	kcompactd0	22:25:21	0
3976407	99	48	37,7	cyclictest	4167340	-21	ssh	00:15:18	0
3976407	99	48	29,17	cyclictest	0	-21	swapper/0	22:30:32	0
3976407	99	48	28,18	cyclictest	4050837	-21	sendmail	22:00:01	0
3976408	99	47	40,5	cyclictest	3714088	-21	kworker/u4:10+events_unbound	19:15:01	1
3976408	99	47	38,7	cyclictest	4126577	-21	kworker/u4:10+events_unbound	23:35:01	1
3976408	99	47	37,8	cyclictest	3997067	-21	systemd	20:27:17	1
3976408	99	47	18,22	cyclictest	0	-21	swapper/1	21:40:34	1
3976407	99	47	39,5	cyclictest	4158841	-21	aten_r7power_vo	00:05:16	0
3976407	99	47	38,7	cyclictest	4057842	-21	sshd	22:07:28	0
3976408	99	46	39,5	cyclictest	3995472	-21	sendmail_mailqu	20:20:37	1
3976408	99	46	39,5	cyclictest	3995472	-21	sendmail_mailqu	20:20:37	1
3976408	99	46	38,6	cyclictest	4038327	-21	wget	21:45:16	1
3976408	99	46	38,5	cyclictest	4090619	-21	sshd	22:45:31	1
3976408	99	46	35,7	cyclictest	0	-21	swapper/1	00:15:26	1
3976407	99	46	40,4	cyclictest	4163934	-21	proc_pri	00:10:39	0
3976407	99	46	39,5	cyclictest	4007457	-21	sort	21:10:02	0
3976407	99	46	39,5	cyclictest	3978964	-21	sendmail	19:20:00	0
3976407	99	46	38,6	cyclictest	3981573	-21	kworker/u4:7+events_unbound	20:27:00	0
3976407	99	46	38,5	cyclictest	4172879	-21	diskmemload	00:20:40	0
3976407	99	46	37,7	cyclictest	3976632	-21	aten_r7power_en	19:10:15	0
3976408	99	45	38,5	cyclictest	4125218	-21	proc_pri	23:25:37	1
3976408	99	45	38,5	cyclictest	4102890	-21	cut	23:00:16	1
3976408	99	45	37,6	cyclictest	4006190	-21	latency_hist	21:05:01	1
3976408	99	45	36,7	cyclictest	3985815	-21	df_abs	19:45:17	1
3976407	99	45	8,8	cyclictest	15	1	ktimers/0	21:54:30	0
3976407	99	45	39,4	cyclictest	4142706	-21	diskmemload	23:45:40	0
3976407	99	45	38,5	cyclictest	3998484	-21	latency_hist	20:35:02	0
3976407	99	45	37,6	cyclictest	4128902	-21	fschecks_count	23:30:19	0
3976407	99	45	36,7	cyclictest	3976467	-21	latency_hist	19:10:01	0
3976407	99	45	36,6	cyclictest	3992215	-21	aten_r7power_en	20:10:16	0
3976408	99	44	37,5	cyclictest	3714088	-21	kworker/u4:10+events_unbound	19:42:15	1
3976408	99	44	35,5	cyclictest	4002268	-21	kworker/u4:1-writeback	21:25:39	1
3976408	99	44	34,7	cyclictest	0	-21	swapper/1	22:20:29	1
3976407	99	44	37,5	cyclictest	4155475	-21	threads	00:00:40	0
3976407	99	44	37,5	cyclictest	3977626	-21	kworker/u4:1+events_unbound	19:33:44	0
3976407	99	44	36,6	cyclictest	3993501	-21	aten_r7power_en	20:15:15	0
3976407	99	44	36,5	cyclictest	3989246	-21	sed	19:55:39	0
3976407	99	44	34,7	cyclictest	3991009	-21	aten_r7power_vo	20:05:15	0
3976407	99	44	24,17	cyclictest	0	-21	swapper/0	23:00:29	0
3976408	99	43	35,6	cyclictest	3979303	-21	aten_r7power_en	19:20:20	1
3976408	99	43	34,7	cyclictest	3993221	-21	systemd	20:12:17	1
3976408	99	43	11,18	cyclictest	4150886	-21	ssh	23:55:34	1
3976407	99	43	36,5	cyclictest	3714087	-21	kworker/u4:9+events_unbound	20:21:02	0
3976407	99	43	36,5	cyclictest	3714087	-21	kworker/u4:9+events_unbound	20:21:01	0
3976408	99	42	36,4	cyclictest	4094883	-21	ntpq	22:50:28	1
3976408	99	42	34,6	cyclictest	4004000	-21	fschecks_count	20:55:19	1
3976408	99	41	35,4	cyclictest	4001030	-21	ls	20:45:01	1
3976408	99	41	32,6	cyclictest	0	-21	swapper/1	21:50:12	1
3976407	99	41	7,31	cyclictest	4145773	-21	ssh	23:50:14	0
3976407	99	41	33,6	cyclictest	0	-21	swapper/0	22:00:41	0
3976407	99	41	31,7	cyclictest	4000941	-21	unixbench_singl	20:40:35	0
3976407	99	41	21,17	cyclictest	3985433	-21	kworker/u4:7	19:45:00	0
3976407	99	40	30,7	cyclictest	3986711	-21	apt-get	19:50:09	0
3976408	99	38	28,7	cyclictest	3981795	-21	aten2__	19:30:13	1
3976407	99	38	29,6	cyclictest	3985731	-21	aten_r7power_vo	19:45:17	0
3976408	99	37	28,6	cyclictest	0	-21	swapper/1	19:55:01	1
3976408	99	33	24,6	cyclictest	0	-21	swapper/1	19:10:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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