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 Feb 26, 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
3279178	99	103	94,7	cyclictest	3449128	-21	kworker/u4:2+events_unbound	11:55:54	1
3279178	99	100	91,7	cyclictest	3347025	-21	kworker/u4:2+events_unbound	09:55:33	1
3279178	99	93	85,6	cyclictest	3436273	-21	kworker/u4:6+events_unbound	12:20:58	1
3279178	99	89	77,10	cyclictest	3280398	-21	kworker/u4:5+events_unbound	09:45:30	1
3279177	99	88	31,45	cyclictest	3435254	-21	ssh	11:35:37	0
3279177	99	85	77,6	cyclictest	3384863	-21	kworker/u4:12+events_unbound	10:38:44	0
3279178	99	84	68,8	cyclictest	3280399	-21	kworker/u4:6+events_unbound	07:49:59	1
3279177	99	78	4,45	cyclictest	3425789	-21	apt-get	11:25:11	0
3279177	99	78	24,29	cyclictest	0	-21	swapper/0	12:15:00	0
3279178	99	77	70,5	cyclictest	3293194	-21	kworker/u4:18+events_unbound	08:40:15	1
3279177	99	76	37,22	cyclictest	3361906	-21	df_abs	10:10:17	0
3279177	99	76	35,38	cyclictest	0	-21	swapper/0	12:35:38	0
3279177	99	75	23,29	cyclictest	0	-21	swapper/0	10:30:38	0
3279177	99	74	59,10	cyclictest	3401180	-21	sh	10:55:46	0
3279178	99	73	67,4	cyclictest	0	-21	swapper/1	11:50:27	1
3279178	99	73	64,6	cyclictest	3286792	-21	kworker/u4:22+events_unbound	07:40:01	1
3279177	99	73	29,26	cyclictest	0	-21	swapper/0	08:20:30	0
3279178	99	72	65,5	cyclictest	0	-21	swapper/1	12:16:39	1
3279178	99	72	64,6	cyclictest	3440596	-21	kworker/u4:9+events_unbound	11:45:54	1
3279178	99	72	53,6	cyclictest	3265431	-21	kworker/u4:12+events_unbound	07:10:00	1
3279177	99	72	22,28	cyclictest	0	-21	swapper/0	12:25:24	0
3279177	99	71	20,28	cyclictest	0	-21	swapper/0	09:45:26	0
3279177	99	70	38,30	cyclictest	3430411	-21	fschecks_time	11:30:18	0
3279177	99	70	38,30	cyclictest	3370325	-21	aten_r7power_en	10:20:15	0
3279177	99	70	3,25	cyclictest	3396685	-21	sshd	10:50:31	0
3279177	99	70	2,63	cyclictest	3328312	-21	ssh	09:30:30	0
3279178	99	68	55,9	cyclictest	37	-21	kcompactd0	10:04:24	1
3279177	99	68	26,39	cyclictest	255	50	irq/23-42890000.ethernet	12:00:30	0
3279177	99	68	19,27	cyclictest	0	-21	swapper/0	11:55:32	0
3279178	99	67	50,5	cyclictest	3410909	-21	kworker/u4:1+events_unbound	11:30:00	1
3279177	99	67	33,31	cyclictest	3296171	-21	fschecks_count	08:15:19	0
3279177	99	67	31,26	cyclictest	0	-21	swapper/0	09:20:29	0
3279178	99	66	57,6	cyclictest	0	-21	swapper/1	09:40:29	1
3279177	99	66	2,8	cyclictest	3311147	-21	ps	09:10:37	0
3279177	99	66	2,11	cyclictest	3284958	-21	/usr/sbin/munin	07:30:23	0
3279178	99	65	56,7	cyclictest	3282987	-21	systemd	07:24:52	1
3279178	99	65	53,5	cyclictest	3290628	-21	kworker/u4:13+events_unbound	08:00:00	1
3279177	99	65	4,55	cyclictest	3292121	-21	apt-get	08:00:12	0
3279177	99	65	36,26	cyclictest	3290943	-21	aten_r7power_vo	07:55:16	0
3279177	99	65	30,31	cyclictest	0	-21	swapper/0	09:15:26	0
3279177	99	65	12,45	cyclictest	3309904	-21	diskmemload	10:45:25	0
3279177	99	64	2,21	cyclictest	3333084	-21	ssh	09:35:39	0
3279177	99	64	2,17	cyclictest	3405106	-21	ssh	11:00:29	0
3279177	99	64	21,27	cyclictest	247	50	irq/20-imx-lcdifv3-crtc.0	08:10:01	0
3279177	99	63	37,23	cyclictest	0	-21	swapper/0	10:05:38	0
3279177	99	63	33,28	cyclictest	3408853	-21	aten_r7power_vo	11:05:17	0
3279177	99	63	33,28	cyclictest	3306528	-21	fschecks_time	08:55:21	0
3279177	99	63	3,14	cyclictest	3421551	-21	apt-get	11:20:10	0
3279177	99	63	31,30	cyclictest	3366331	-21	fschecks_time	10:15:20	0
3279177	99	63	2,58	cyclictest	3289557	-21	apt-get	07:50:15	0
3279177	99	63	2,4	cyclictest	3442748	-21	apt-get	11:45:16	0
3279177	99	63	2,22	cyclictest	3387936	-21	ssh	10:40:21	0
3279177	99	63	1,5	cyclictest	3375305	-21	ntpq	10:25:30	0
3279177	99	62	5,22	cyclictest	54	-21	kswapd0	11:15:12	0
3279177	99	62	3,15	cyclictest	3323819	-21	ntpq	09:25:24	0
3279177	99	62	2,5	cyclictest	3468639	-21	ntpq	12:15:25	0
3279177	99	62	21,38	cyclictest	3301968	-21	sed	08:35:39	0
3279177	99	61	3,6	cyclictest	3348850	-21	apt-get	09:55:12	0
3279177	99	61	3,55	cyclictest	3308178	-21	ntpq	09:00:32	0
3279177	99	61	31,26	cyclictest	0	-21	swapper/0	11:50:25	0
3279177	99	60	4,52	cyclictest	3302333	-21	apt-get	08:40:12	0
3279177	99	60	3,53	cyclictest	3353786	-21	ntpq	10:00:26	0
3279177	99	60	3,14	cyclictest	3299077	-21	ntpq	08:25:25	0
3279177	99	60	3,14	cyclictest	3299077	-21	ntpq	08:25:25	0
3279177	99	60	3,10	cyclictest	3439443	-21	ssh	11:40:35	0
3279177	99	60	14,44	cyclictest	3410909	-21	kworker/u4:1+rpciod	11:10:20	0
3279177	99	60	14,44	cyclictest	3410909	-21	kworker/u4:1+rpciod	11:10:20	0
3279177	99	60	1,15	cyclictest	3282461	-21	ntpq	07:20:22	0
3279178	99	59	49,7	cyclictest	3359430	-21	kworker/u4:16+events_unbound	10:22:44	1
3279178	99	59	44,5	cyclictest	3359430	-21	kworker/u4:16+events_unbound	10:10:00	1
3279177	99	59	2,14	cyclictest	37	-21	kcompactd0	09:44:42	0
3279177	99	59	2,12	cyclictest	3345342	-21	ntpq	09:50:29	0
3279177	99	59	12,44	cyclictest	3287961	-21	grep	07:40:37	0
3279177	99	59	1,13	cyclictest	3286316	-21	ntpq	07:35:28	0
3279178	99	58	48,7	cyclictest	314	-21	systemd-journal	10:45:39	1
3279177	99	58	3,13	cyclictest	3288286	-21	apt-get	07:45:11	0
3279177	99	58	27,27	cyclictest	0	-21	swapper/0	07:10:38	0
3279177	99	58	26,29	cyclictest	0	-21	swapper/0	12:30:15	0
3279177	99	58	1,16	cyclictest	3472929	-21	ntpq	12:20:28	0
3279178	99	57	51,4	cyclictest	3266729	-21	kworker/u4:11+events_unbound	08:10:01	1
3279178	99	57	50,5	cyclictest	3436273	-21	kworker/u4:6+events_unbound	12:03:44	1
3279178	99	57	49,6	cyclictest	3436270	-21	kworker/u4:1+events_unbound	11:40:53	1
3279178	99	57	47,7	cyclictest	3393577	-21	kworker/u4:9+events_unbound	10:55:44	1
3279178	99	57	47,7	cyclictest	3310629	-21	sshd	09:10:20	1
3279177	99	57	2,7	cyclictest	3309427	-21	ntpq	09:05:29	0
3279177	99	57	2,7	cyclictest	3283177	-21	apt-get	07:25:13	0
3279177	99	57	27,27	cyclictest	54	-21	kswapd0	12:05:33	0
3279177	99	57	22,32	cyclictest	3305027	-21	aten_r7power_en	08:50:21	0
3279178	99	56	49,5	cyclictest	3478403	-21	kworker/u4:8+events_unbound	12:27:00	1
3279177	99	56	2,48	cyclictest	3300327	-21	ntpq	08:30:25	0
3279177	99	56	1,4	cyclictest	3304247	-21	ntpq	08:45:30	0
3279178	99	55	48,5	cyclictest	3286792	-21	kworker/u4:22+events_unbound	08:20:00	1
3279178	99	55	47,6	cyclictest	3419640	-21	kworker/u4:11+events_unbound	11:33:00	1
3279178	99	55	43,10	cyclictest	3415279	-21	kworker/u4:9-xprtiod	11:15:43	1
3279178	99	55	42,5	cyclictest	3419640	-21	kworker/u4:11+events_unbound	11:20:48	1
3279177	99	55	23,29	cyclictest	0	-21	swapper/0	08:10:18	0
3279177	99	55	1,15	cyclictest	3281697	-21	sshd	07:19:58	0
3279178	99	54	47,5	cyclictest	3436276	-21	kworker/u4:8+events_unbound	11:37:44	1
3279178	99	53	48,4	cyclictest	3281684	-21	kworker/u4:15+events_unbound	08:40:01	1
3279178	99	53	48,4	cyclictest	3280398	-21	kworker/u4:5+events_unbound	07:20:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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