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 100 highest latencies:

System rack7slot2.osadl.org (updated Thu Jan 15, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3909413	99	95	88,5	cyclictest	3930910	-21	kworker/u4:14+events_unbound	08:55:37	1
3909413	99	95	85,6	cyclictest	4068243	-21	kworker/u4:5+events_unbound	11:50:58	1
3909413	99	95	84,8	cyclictest	3913172	-21	kworker/u4:15+events_unbound	08:00:23	1
3909413	99	94	82,9	cyclictest	3916937	-21	kworker/u4:3+events_unbound	08:45:34	1
3909413	99	92	82,8	cyclictest	3928405	-21	kworker/u4:9+events_unbound	08:35:32	1
3909413	99	90	79,8	cyclictest	3905664	-21	kworker/u4:1+events_unbound	07:35:11	1
3909413	99	89	68,5	cyclictest	3986315	-21	kworker/u4:12+events_unbound	10:10:44	1
3909413	99	87	79,6	cyclictest	4025505	-21	kworker/u4:3+events_unbound	10:50:50	1
3909413	99	87	64,5	cyclictest	3981942	-21	kworker/u4:5+events_unbound	10:00:44	1
3909413	99	86	77,7	cyclictest	3920728	-21	kworker/u4:10+events_unbound	09:45:42	1
3909413	99	82	74,5	cyclictest	3913172	-21	kworker/u4:15+events_unbound	07:25:10	1
3909413	99	81	72,6	cyclictest	3916937	-21	kworker/u4:3+events_unbound	08:10:27	1
3909409	99	80	59,16	cyclictest	54	-21	kswapd0	11:55:10	0
3909409	99	79	69,7	cyclictest	3910624	-21	kworker/u4:5+events_unbound	08:15:28	0
3909413	99	78	71,5	cyclictest	4021111	-21	kworker/u4:9+events_unbound	11:05:53	1
3909413	99	77	69,5	cyclictest	4068243	-21	kworker/u4:5+events_unbound	11:55:59	1
3909409	99	75	42,30	cyclictest	3933310	-21	xargs	08:40:44	0
3909409	99	74	67,5	cyclictest	4104172	-21	kworker/u4:7	12:20:00	0
3909409	99	74	42,29	cyclictest	3997329	-21	sort	10:15:18	0
3909413	99	73	64,7	cyclictest	3918218	-21	kworker/u4:6+events_unbound	07:50:00	1
3909409	99	73	4,33	cyclictest	54	-21	kswapd0	10:50:08	0
3909409	99	72	38,5	cyclictest	3922996	-21	cat	08:00:35	0
3909409	99	71	37,31	cyclictest	3995177	-21	kworker/u4:6-rpciod	10:20:17	0
3909413	99	70	63,5	cyclictest	4055362	-21	kworker/u4:7+events_unbound	12:16:02	1
3909413	99	70	61,6	cyclictest	4055362	-21	kworker/u4:7+events_unbound	11:25:01	1
3909409	99	70	30,14	cyclictest	4111101	-21	kworker/u4:9-xprtiod	12:35:26	0
3909409	99	69	34,9	cyclictest	3975770	-21	gltestperf	09:50:22	0
3909413	99	68	61,5	cyclictest	4029284	-21	kworker/u4:14+events_unbound	11:00:52	1
3909413	99	68	58,7	cyclictest	3908069	-21	kworker/u4:0+events_unbound	07:30:11	1
3909409	99	68	33,7	cyclictest	0	-21	swapper/0	12:05:18	0
3909409	99	67	58,7	cyclictest	4046680	-21	kworker/u4:11+events_unbound	11:20:53	0
3909409	99	67	34,7	cyclictest	4023318	-21	aten_r7power_vo	10:45:16	0
3909409	99	65	35,4	cyclictest	3937388	-21	kworker/u4:5-rpciod	09:20:21	0
3909409	99	65	35,4	cyclictest	3937388	-21	kworker/u4:5-rpciod	09:20:21	0
3909409	99	64	33,6	cyclictest	3984818	-21	ntp_kernel_pll_	10:00:32	0
3909413	99	63	54,6	cyclictest	3905664	-21	kworker/u4:1+events_unbound	08:05:27	1
3909413	99	62	47,5	cyclictest	4076909	-21	kworker/u4:12+events_unbound	12:10:01	1
3909413	99	61	54,5	cyclictest	3899361	-21	kworker/u4:7+events_unbound	07:15:00	1
3909409	99	61	53,6	cyclictest	4044827	-21	aten_r7power_vo	11:10:18	0
3909413	99	60	2,40	cyclictest	4070995	-21	ntpq	11:40:28	1
3909409	99	60	42,15	cyclictest	4015349	-21	open_inodes	10:35:37	0
3909413	99	59	50,5	cyclictest	3928403	-21	kworker/u4:4+events_unbound	08:25:01	1
3909413	99	59	39,12	cyclictest	3948729	-21	modprobe	09:20:01	1
3909413	99	57	49,5	cyclictest	4076909	-21	kworker/u4:12+events_unbound	11:50:01	1
3909413	99	57	44,5	cyclictest	3977529	-21	kworker/u4:3+events_unbound	10:05:20	1
3909409	99	57	49,6	cyclictest	4062020	-21	df	11:30:20	0
3909409	99	57	46,7	cyclictest	37	-21	kcompactd0	12:27:44	0
3909413	99	56	49,5	cyclictest	3909408	-21	cyclictest	12:26:05	1
3909413	99	55	46,6	cyclictest	3998947	-21	kworker/u4:7+events_unbound	10:27:00	1
3909413	99	55	40,6	cyclictest	4016656	-21	kworker/u4:6+events_unbound	11:00:00	1
3909409	99	55	46,7	cyclictest	4010962	-21	/usr/sbin/munin	10:30:33	0
3909409	99	55	45,7	cyclictest	3945350	-21	/usr/sbin/munin	09:15:27	0
3909413	99	54	47,5	cyclictest	3926648	-21	ld	08:15:26	1
3909413	99	54	46,5	cyclictest	3929239	-21	sshd	08:25:29	1
3909413	99	54	45,6	cyclictest	3937387	-21	kworker/u4:3+events_unbound	09:11:00	1
3909413	99	54	10,39	cyclictest	4105208	-21	ssh	12:20:27	1
3909409	99	54	5,46	cyclictest	3962964	-21	ssh	09:35:27	0
3909409	99	54	27,24	cyclictest	0	-21	swapper/0	08:05:10	0
3909413	99	53	46,5	cyclictest	3942502	-21	kworker/u4:6+events_unbound	09:34:59	1
3909409	99	53	32,19	cyclictest	3909408	-21	cyclictest	08:30:30	0
3909413	99	52	45,5	cyclictest	4113122	-21	basename	12:30:16	1
3909413	99	52	44,6	cyclictest	4021110	-21	kworker/u4:8+events_unbound	11:15:00	1
3909409	99	52	44,6	cyclictest	4055362	-21	kworker/u4:7+events_unbound	11:35:56	0
3909413	99	51	44,5	cyclictest	4076909	-21	kworker/u4:12+events_unbound	12:11:02	1
3909413	99	51	44,5	cyclictest	3994535	-21	kworker/u4:5+events_unbound	10:15:03	1
3909413	99	51	44,5	cyclictest	3920728	-21	kworker/u4:10+events_unbound	09:22:43	1
3909413	99	51	44,5	cyclictest	3920728	-21	kworker/u4:10+events_unbound	09:22:42	1
3909413	99	51	43,6	cyclictest	3981946	-21	kworker/u4:8+events_unbound	09:59:44	1
3909409	99	51	44,5	cyclictest	4021111	-21	kworker/u4:9+events_unbound	11:05:02	0
3909409	99	51	44,4	cyclictest	0	-21	swapper/0	10:40:37	0
3909409	99	51	41,7	cyclictest	3918341	-21	latency_hist	07:45:00	0
3909409	99	51	33,5	cyclictest	4070659	-21	fschecks_time	11:40:18	0
3909409	99	51	32,17	cyclictest	3936160	-21	latency_hist	08:55:01	0
3909413	99	50	40,7	cyclictest	0	-21	swapper/1	07:50:17	1
3909409	99	49	42,5	cyclictest	4036773	-21	ld	11:00:26	0
3909409	99	49	41,4	cyclictest	0	-21	swapper/0	10:55:48	0
3909413	99	48	42,5	cyclictest	3950822	-21	kworker/u4:4+events_unbound	09:29:01	1
3909413	99	48	41,5	cyclictest	4106751	-21	kworker/u4:5+events_unbound	12:36:58	1
3909413	99	48	38,7	cyclictest	4058653	-21	unixbench-2d	11:25:37	1
3909413	99	48	36,9	cyclictest	4014771	-21	fschecks_count	10:35:21	1
3909413	99	48	10,32	cyclictest	4049689	-21	ntpq	11:15:30	1
3909409	99	48	42,4	cyclictest	4087772	-21	gltestperf	12:00:20	0
3909409	99	48	39,6	cyclictest	3971306	-21	fschecks_count	09:45:19	0
3909409	99	48	30,14	cyclictest	0	-21	swapper/0	11:55:01	0
3909413	99	47	40,5	cyclictest	4025505	-21	kworker/u4:3+events_unbound	10:49:43	1
3909409	99	47	40,5	cyclictest	3983763	-21	idleruntime-cro	10:00:01	0
3909409	99	47	39,5	cyclictest	0	-21	swapper/0	08:35:31	0
3909409	99	47	33,11	cyclictest	4053045	-21	sh	11:20:02	0
3909409	99	47	27,5	cyclictest	0	-21	swapper/0	09:10:32	0
3909409	99	47	27,17	cyclictest	3993750	-21	timerandwakeup	10:10:37	0
3909413	99	46	38,6	cyclictest	3962612	-21	fschecks_time	09:35:17	1
3909413	99	46	37,6	cyclictest	4021110	-21	kworker/u4:8+events_unbound	11:33:44	1
3909413	99	46	36,7	cyclictest	3910915	-21	aten_r7power_po	07:15:16	1
3909409	99	46	39,5	cyclictest	3988539	-21	df_abs	10:05:17	0
3909409	99	46	38,6	cyclictest	3933890	-21	aten_r7power_en	08:45:20	0
3909409	99	46	38,6	cyclictest	3916195	-21	fschecks_time	07:35:17	0
3909409	99	46	38,4	cyclictest	3954325	-21	open_files	09:25:33	0
3909409	99	46	33,11	cyclictest	3970690	-21	ssh	09:45:00	0
3909413	99	45	36,7	cyclictest	3935153	-21	aten_r7power_en	08:50:14	1
3909413	99	45	36,6	cyclictest	4055362	-21	kworker/u4:7-rpciod	11:40:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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