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 May 28, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2827396	99	102	95,5	cyclictest	3027290	-21	kworker/u4:9+events_unbound	00:28:23	0
2827396	99	94	87,5	cyclictest	2854339	-21	kworker/u4:6+events_unbound	21:06:33	0
2827396	99	94	86,6	cyclictest	2891089	-21	kworker/u4:7+events_unbound	21:46:39	0
2827396	99	91	84,5	cyclictest	2844037	-21	kworker/u4:4+events_unbound	20:21:28	0
2827396	99	89	82,5	cyclictest	2869434	-21	kworker/u4:5+events_unbound	21:26:36	0
2827396	99	88	68,17	cyclictest	3005680	-21	kworker/u4:2+events_unbound	00:00:00	0
2827396	99	83	76,5	cyclictest	2837573	-21	kworker/u4:15+events_unbound	20:56:32	0
2827396	99	83	75,6	cyclictest	2813529	-21	kworker/u4:3+events_unbound	20:41:31	0
2827396	99	81	73,6	cyclictest	2860446	-21	kworker/u4:16+events_unbound	22:16:44	0
2827396	99	79	71,6	cyclictest	2837573	-21	kworker/u4:15+events_unbound	20:10:00	0
2827396	99	75	59,10	cyclictest	53	-21	kswapd0	23:45:09	0
2827396	99	73	66,5	cyclictest	2842681	-21	kworker/u4:2+events_unbound	20:26:27	0
2827396	99	72	67,4	cyclictest	3014566	-21	kworker/u4:11+events_unbound	00:22:47	0
2827396	99	72	67,4	cyclictest	3014566	-21	kworker/u4:11+events_unbound	00:22:47	0
2827396	99	72	64,5	cyclictest	2996817	-21	kworker/u4:1+events_unbound	00:10:00	0
2827396	99	71	64,5	cyclictest	2837573	-21	kworker/u4:15+events_unbound	20:16:27	0
2827396	99	71	64,5	cyclictest	2802933	-21	kworker/u4:10+events_unbound	19:51:23	0
2827396	99	71	64,5	cyclictest	2802933	-21	kworker/u4:10+events_unbound	19:51:23	0
2827397	99	70	63,5	cyclictest	2974546	-21	kworker/u4:9+events_unbound	23:40:00	1
2827397	99	70	61,7	cyclictest	3010124	-21	kworker/u4:9+events_unbound	00:02:34	1
2827396	99	70	63,5	cyclictest	2845304	-21	kworker/u4:5+events_unbound	20:46:32	0
2827397	99	69	51,13	cyclictest	0	-21	swapper/1	00:10:15	1
2827396	99	69	64,4	cyclictest	2826123	-21	kworker/u4:2+events_unbound	19:21:17	0
2827397	99	68	60,6	cyclictest	2911291	-21	/usr/sbin/munin	22:10:14	1
2827396	99	67	60,5	cyclictest	2829905	-21	kworker/u4:13+events_unbound	19:40:02	0
2827397	99	63	47,12	cyclictest	0	-21	swapper/1	22:20:14	1
2827397	99	62	54,5	cyclictest	2845304	-21	kworker/u4:5+events_unbound	20:40:01	1
2827396	99	62	46,11	cyclictest	3037022	-21	ssh	00:33:19	0
2827397	99	61	51,7	cyclictest	2858217	-21	apt-get	21:10:06	1
2827397	99	61	48,8	cyclictest	2842693	-21	modprobe	20:10:00	1
2827396	99	61	54,5	cyclictest	2845304	-21	kworker/u4:5+events_unbound	20:50:02	0
2827396	99	61	51,7	cyclictest	317	-21	systemd-journal	23:52:18	0
2827396	99	60	47,7	cyclictest	2935659	-21	kworker/u4:1+events_unbound	22:50:59	0
2827397	99	59	52,5	cyclictest	2827394	-21	cyclictest	00:28:49	1
2827397	99	58	47,8	cyclictest	0	-21	swapper/1	23:15:18	1
2827397	99	57	45,9	cyclictest	2855601	-21	systemd	20:56:31	1
2827397	99	57	19,11	cyclictest	2997107	-21	ssh	23:47:30	1
2827397	99	57	16,13	cyclictest	2941423	-21	ssh	22:44:41	1
2827397	99	57	16,13	cyclictest	2941423	-21	ssh	22:44:41	1
2827396	99	57	49,5	cyclictest	2986262	-21	/usr/sbin/munin	23:35:21	0
2827397	99	56	46,7	cyclictest	2981574	-21	/usr/sbin/munin	23:30:15	1
2827397	99	56	19,11	cyclictest	2962504	-21	ssh	23:08:15	1
2827397	99	56	17,13	cyclictest	2979035	-21	ssh	23:26:39	1
2827397	99	56	17,11	cyclictest	2958673	-21	ssh	23:04:08	1
2827397	99	56	15,16	cyclictest	2967413	-21	ssh	23:14:04	1
2827396	99	56	48,6	cyclictest	2917817	-21	kworker/u4:0+events_unbound	22:48:59	0
2827397	99	55	17,15	cyclictest	2948521	-21	ssh	22:52:01	1
2827397	99	55	17,11	cyclictest	2976521	-21	ssh	23:24:38	1
2827396	99	55	49,5	cyclictest	2882787	-21	kworker/u4:0+events_unbound	21:41:00	0
2827396	99	55	48,5	cyclictest	2887277	-21	kworker/u4:4+events_unbound	22:35:03	0
2827396	99	55	48,5	cyclictest	2847881	-21	kworker/u4:11+events_unbound	21:11:35	0
2827396	99	55	47,6	cyclictest	2996817	-21	kworker/u4:1+events_unbound	00:01:59	0
2827396	99	55	47,6	cyclictest	2957338	-21	kworker/u4:5+events_unbound	23:15:59	0
2827396	99	55	42,11	cyclictest	256	50	irq/23-42890000.ethernet	21:20:31	0
2827397	99	54	42,9	cyclictest	2868401	-21	switchtime	21:20:36	1
2827397	99	54	41,8	cyclictest	2885025	-21	grep	21:40:15	1
2827397	99	54	16,14	cyclictest	2901065	-21	ssh	21:58:17	1
2827397	99	54	16,10	cyclictest	2991829	-21	ssh	23:41:04	1
2827397	99	54	16,10	cyclictest	2865418	-21	ssh	21:17:29	1
2827397	99	54	15,14	cyclictest	3020805	-21	ssh	00:15:09	1
2827397	99	54	15,14	cyclictest	3020805	-21	ssh	00:15:09	1
2827397	99	54	15,14	cyclictest	2903233	-21	ntpq	22:00:28	1
2827397	99	54	15,14	cyclictest	2892502	-21	ssh	21:48:38	1
2827397	99	54	14,14	cyclictest	2945210	-21	ssh	22:48:43	1
2827397	99	54	14,13	cyclictest	3037129	-21	ssh	00:33:29	1
2827397	99	54	13,16	cyclictest	2917836	-21	ssh	22:17:03	1
2827397	99	54	13,13	cyclictest	2876856	-21	ntpq	21:30:29	1
2827397	99	54	12,15	cyclictest	3014761	-21	ssh	00:07:44	1
2827396	99	54	44,6	cyclictest	2913375	-21	kthreadd	22:11:56	0
2827396	99	54	41,8	cyclictest	2858215	-21	diskmemload	23:25:08	0
2827396	99	54	41,11	cyclictest	2952845	-21	kworker/u4:8+events_unbound	23:00:01	0
2827397	99	53	15,14	cyclictest	2928242	-21	ssh	22:29:35	1
2827397	99	53	14,14	cyclictest	2908785	-21	ssh	22:06:36	1
2827396	99	53	45,6	cyclictest	2957339	-21	kworker/u4:7+events_unbound	23:08:00	0
2827396	99	53	45,6	cyclictest	2917820	-21	kworker/u4:3+events_unbound	22:43:45	0
2827396	99	53	45,6	cyclictest	2917820	-21	kworker/u4:3+events_unbound	22:43:45	0
2827396	99	53	43,7	cyclictest	2952844	-21	kworker/u4:6+rpciod	23:00:21	0
2827396	99	53	42,9	cyclictest	2869429	-21	kworker/u4:0+events_unbound	21:31:59	0
2827397	99	52	44,5	cyclictest	2992373	-21	kworker/u4:7-rpciod	00:20:11	1
2827397	99	52	44,5	cyclictest	2992373	-21	kworker/u4:7-rpciod	00:20:11	1
2827397	99	52	18,11	cyclictest	3000312	-21	ssh	23:50:40	1
2827397	99	52	14,13	cyclictest	2881849	-21	ssh	21:35:43	1
2827397	99	52	14,11	cyclictest	2930638	-21	ssh	22:31:26	1
2827397	99	52	13,15	cyclictest	2895573	-21	ssh	21:51:34	1
2827397	99	52	13,12	cyclictest	3004794	-21	ssh	23:55:50	1
2827397	99	52	12,17	cyclictest	3039737	-21	ssh	00:35:42	1
2827397	99	52	12,14	cyclictest	2954038	-21	ssh	22:58:47	1
2827397	99	52	11,17	cyclictest	2847393	-21	ntpq	20:25:25	1
2827396	99	52	45,5	cyclictest	2854339	-21	kworker/u4:6+events_unbound	22:00:00	0
2827396	99	52	40,10	cyclictest	3021235	-21	fschecks_time	00:15:21	0
2827396	99	52	40,10	cyclictest	3021235	-21	fschecks_time	00:15:21	0
2827396	99	52	36,10	cyclictest	0	-21	swapper/0	23:40:34	0
2827396	99	52	32,17	cyclictest	2921206	-21	timerwakeupswit	22:20:38	0
2827397	99	51	41,6	cyclictest	2933234	-21	aten2__	22:35:15	1
2827396	99	51	45,5	cyclictest	2992372	-21	kworker/u4:4+events_unbound	00:35:03	0
2827396	99	51	44,5	cyclictest	2836305	-21	kworker/u4:14+events_unbound	20:00:03	0
2827397	99	50	41,6	cyclictest	2858259	-21	latency_hist	21:10:01	1
2827397	99	50	12,15	cyclictest	2873705	-21	ssh	21:26:41	1
2827396	99	50	42,6	cyclictest	2881090	-21	/usr/sbin/munin	21:35:24	0
2827397	99	49	40,6	cyclictest	2848973	-21	timerwakeupswit	20:30:38	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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