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 Fri Jun 19, 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
2838297	99	108	98,7	cyclictest	2860152	-21	kworker/u4:22+events_unbound	20:37:12	1
2838295	99	101	94,5	cyclictest	2902558	-21	kworker/u4:6+events_unbound	21:52:25	0
2838297	99	84	77,5	cyclictest	2911513	-21	kworker/u4:2+events_unbound	22:27:30	1
2838295	99	84	75,6	cyclictest	2862711	-21	kworker/u4:23+events_unbound	20:50:00	0
2838297	99	79	71,6	cyclictest	2865249	-21	kworker/u4:1+events_unbound	21:12:18	1
2838297	99	78	68,7	cyclictest	2919804	-21	kworker/u4:14+events_unbound	22:07:27	1
2838295	99	78	71,5	cyclictest	2847383	-21	kworker/u4:0+events_unbound	19:55:01	0
2838295	99	77	5,12	cyclictest	2873890	-21	ssh	21:15:12	0
2838297	99	76	60,5	cyclictest	2985897	-21	kworker/u4:1+events_unbound	23:22:37	1
2838297	99	74	66,6	cyclictest	3029711	-21	kworker/u4:11+events_unbound	00:12:42	1
2838297	99	73	65,6	cyclictest	2963597	-21	kworker/u4:9+events_unbound	22:57:34	1
2838297	99	73	65,6	cyclictest	2963597	-21	kworker/u4:9+events_unbound	22:57:34	1
2838297	99	71	64,6	cyclictest	2954737	-21	kworker/u4:14+events_unbound	22:52:33	1
2838297	99	71	64,6	cyclictest	2954737	-21	kworker/u4:14+events_unbound	22:52:33	1
2838295	99	69	62,5	cyclictest	2920465	-21	kworker/u4:17+events_unbound	22:37:30	0
2838295	99	67	50,11	cyclictest	256	50	irq/23-42890000.ethernet	00:30:10	0
2838297	99	66	59,5	cyclictest	2889164	-21	kworker/u4:1+events_unbound	21:32:22	1
2838297	99	66	58,6	cyclictest	2884698	-21	kworker/u4:7+events_unbound	21:37:22	1
2838297	99	66	57,7	cyclictest	53	-21	kswapd0	22:45:01	1
2838297	99	63	48,5	cyclictest	2857599	-21	kworker/u4:5+events_unbound	20:55:01	1
2838297	99	62	55,5	cyclictest	2860147	-21	kworker/u4:8+events_unbound	21:22:21	1
2838297	99	62	53,7	cyclictest	2842275	-21	kworker/u4:11+events_unbound	19:37:05	1
2838295	99	62	52,7	cyclictest	3034188	-21	kworker/u4:0+events_unbound	00:37:47	0
2838297	99	61	52,7	cyclictest	2837024	-21	kworker/u4:1+events_unbound	19:17:03	1
2838295	99	61	44,13	cyclictest	53	-21	kswapd0	23:55:09	0
2838297	99	59	52,5	cyclictest	2990302	-21	kworker/u4:12+events_unbound	23:27:37	1
2838297	99	59	52,5	cyclictest	2852494	-21	kworker/u4:12+events_unbound	21:15:02	1
2838297	99	59	51,6	cyclictest	2847383	-21	kworker/u4:0+events_unbound	19:57:08	1
2838297	99	59	50,7	cyclictest	3020805	-21	kworker/u4:8+events_unbound	00:07:41	1
2838295	99	59	7,48	cyclictest	2984418	-21	ssh	23:20:33	0
2838295	99	59	43,12	cyclictest	2828220	-21	kworker/u4:15+xprtiod	19:10:11	0
2838295	99	59	42,9	cyclictest	0	-21	swapper/0	00:00:31	0
2838297	99	58	39,6	cyclictest	3046852	-21	kworker/u4:4+events_unbound	00:35:00	1
2838297	99	57	28,20	cyclictest	0	-21	swapper/1	19:10:31	1
2838295	99	57	48,7	cyclictest	317	-21	systemd-journal	00:17:42	0
2838295	99	57	43,9	cyclictest	2954737	-21	kworker/u4:14-rpciod	23:10:15	0
2838297	99	56	48,6	cyclictest	2842277	-21	kworker/u4:14+events_unbound	20:07:08	1
2838295	99	56	49,5	cyclictest	2952798	-21	latency_hist	22:45:02	0
2838297	99	55	48,5	cyclictest	2857599	-21	kworker/u4:5+events_unbound	21:02:16	1
2838295	99	55	11,31	cyclictest	0	-21	swapper/0	00:30:02	0
2838297	99	54	48,5	cyclictest	2902559	-21	kworker/u4:8+events_unbound	22:15:02	1
2838297	99	53	43,7	cyclictest	2990298	-21	kworker/u4:10+events_unbound	23:30:37	1
2838295	99	53	45,5	cyclictest	2879241	-21	proc_pri	21:20:36	0
2838295	99	53	40,9	cyclictest	2870446	-21	mailstats	21:10:39	0
2838295	99	53	30,18	cyclictest	15	1	ktimers/0	19:35:00	0
2838297	99	52	44,6	cyclictest	3011856	-21	kworker/u4:4+events_unbound	00:00:59	1
2838297	99	52	32,13	cyclictest	0	-21	swapper/1	22:30:34	1
2838295	99	52	43,7	cyclictest	317	-21	systemd-journal	22:07:27	0
2838295	99	52	36,14	cyclictest	2927557	-21	ntp_states	22:15:34	0
2838295	99	52	10,13	cyclictest	2987929	-21	apt-get	23:25:11	0
2838295	99	51	45,4	cyclictest	2935635	-21	aten_r7power_vo	22:25:17	0
2838295	99	51	44,5	cyclictest	2900959	-21	/usr/sbin/munin	21:45:23	0
2838297	99	50	43,5	cyclictest	2954737	-21	kworker/u4:14+events_unbound	23:07:36	1
2838297	99	50	43,5	cyclictest	2950980	-21	kworker/u4:12+events_unbound	23:02:36	1
2838297	99	50	43,5	cyclictest	2950980	-21	kworker/u4:12+events_unbound	23:02:36	1
2838297	99	50	41,6	cyclictest	2928172	-21	ssh	22:16:09	1
2838295	99	50	9,13	cyclictest	2857800	-21	apt-get	20:25:11	0
2838295	99	50	43,5	cyclictest	2861737	-21	/usr/sbin/munin	20:40:14	0
2838295	99	50	41,7	cyclictest	2907035	-21	kworker/u4:0-rpciod	21:55:40	0
2838295	99	50	23,7	cyclictest	0	-21	swapper/0	23:15:18	0
2838297	99	49	42,5	cyclictest	3006532	-21	timerandwakeup	23:45:41	1
2838297	99	49	38,7	cyclictest	0	-21	swapper/1	00:15:38	1
2838297	99	49	36,9	cyclictest	0	-21	swapper/1	23:50:30	1
2838295	99	49	5,27	cyclictest	2892393	-21	ssh	21:35:35	0
2838295	99	49	42,5	cyclictest	2935181	-21	latency_hist	22:25:01	0
2838295	99	49	41,6	cyclictest	2997323	-21	/usr/sbin/munin	23:35:24	0
2838295	99	49	41,5	cyclictest	0	-21	swapper/0	23:50:40	0
2838295	99	49	41,5	cyclictest	0	-21	swapper/0	21:40:39	0
2838295	99	49	23,5	cyclictest	15	1	ktimers/0	23:40:28	0
2838295	99	49	19,6	cyclictest	2992581	-21	ssh	23:30:19	0
2838297	99	48	5,39	cyclictest	2896864	-21	sh	21:40:40	1
2838297	99	48	41,5	cyclictest	3036307	-21	cut	00:20:18	1
2838297	99	48	41,5	cyclictest	2935136	-21	sh	22:24:58	1
2838297	99	48	41,5	cyclictest	2902556	-21	kworker/u4:4+events_unbound	21:59:00	1
2838297	99	48	40,6	cyclictest	2860152	-21	kworker/u4:22+events_unbound	20:45:02	1
2838297	99	48	38,6	cyclictest	0	-21	swapper/1	00:00:01	1
2838295	99	48	41,5	cyclictest	2888258	-21	timerandwakeup	21:30:40	0
2838295	99	48	40,6	cyclictest	2922383	-21	aten_r7power_cu	22:10:16	0
2838295	99	48	32,14	cyclictest	2856352	-21	munin-run	20:20:00	0
2838295	99	48	28,17	cyclictest	0	-21	swapper/0	22:55:22	0
2838295	99	48	28,17	cyclictest	0	-21	swapper/0	22:55:22	0
2838297	99	47	41,4	cyclictest	2904780	-21	aten_r7power_en	21:50:13	1
2838297	99	47	41,4	cyclictest	2869205	-21	latency_hist	21:10:02	1
2838297	99	47	40,5	cyclictest	2839614	-21	kworker/u4:7+events_unbound	19:35:01	1
2838297	99	47	37,7	cyclictest	2975128	-21	fschecks_count	23:10:20	1
2838295	99	47	40,5	cyclictest	2838292	-21	cyclictest	23:05:19	0
2838295	99	47	37,6	cyclictest	0	-21	swapper/0	22:00:12	0
2838295	99	47	24,20	cyclictest	0	-21	swapper/0	20:55:22	0
2838297	99	46	41,4	cyclictest	2999166	-21	kworker/u4:4+events_unbound	23:42:38	1
2838297	99	46	40,4	cyclictest	2902560	-21	kworker/u4:11+events_unbound	21:47:25	1
2838297	99	46	39,5	cyclictest	2838292	-21	cyclictest	00:25:32	1
2838297	99	46	38,5	cyclictest	2945539	-21	/usr/sbin/munin	22:35:42	1
2838297	99	46	37,7	cyclictest	2847384	-21	kworker/u4:1+events_unbound	20:20:01	1
2838295	99	46	39,6	cyclictest	2786389	-21	kworker/u4:9+events_unbound	19:22:00	0
2838295	99	46	39,5	cyclictest	2847050	-21	sendmail_mailqu	19:40:40	0
2838295	99	46	36,8	cyclictest	2839882	-21	acpi	19:15:12	0
2838297	99	45	37,6	cyclictest	3051889	-21	systemd	00:37:45	1
2838297	99	45	37,6	cyclictest	2844818	-21	kworker/u4:18+events_unbound	20:25:00	1
2838297	99	45	10,27	cyclictest	2883581	-21	ssh	21:25:34	1
2838295	99	45	38,5	cyclictest	2958520	-21	unixbench_multi	22:50:40	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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