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 Tue May 19, 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
2522608	99	98	36,36	cyclictest	0	-21	swapper/0	09:40:19	0
2522608	99	96	74,15	cyclictest	2687492	-21	kworker/u4:0-rpciod	12:05:06	0
2522609	99	94	66,22	cyclictest	2733071	-21	sh	12:35:14	1
2522609	99	93	84,7	cyclictest	2669743	-21	kworker/u4:3+events_unbound	11:39:14	1
2522609	99	89	81,6	cyclictest	2600052	-21	kworker/u4:10+events_unbound	10:09:06	1
2522609	99	88	81,5	cyclictest	2696368	-21	kworker/u4:4+events_unbound	11:59:16	1
2522609	99	88	80,5	cyclictest	2595579	-21	kworker/u4:7+events_unbound	09:59:05	1
2522608	99	85	46,26	cyclictest	53	-21	kswapd0	09:35:07	0
2522608	99	85	35,45	cyclictest	0	-21	swapper/0	08:55:11	0
2522608	99	84	76,5	cyclictest	2544368	-21	kworker/u4:11+events_unbound	08:50:02	0
2522609	99	82	75,5	cyclictest	2544368	-21	kworker/u4:11+events_unbound	08:48:55	1
2522609	99	80	73,5	cyclictest	2530217	-21	kworker/u4:10+events_unbound	08:18:53	1
2522608	99	79	3,24	cyclictest	2548244	-21	apt-get	08:50:09	0
2522608	99	77	50,23	cyclictest	53	-21	kswapd0	11:35:09	0
2522609	99	76	68,6	cyclictest	2608922	-21	kworker/u4:6+events_unbound	10:14:06	1
2522609	99	73	66,5	cyclictest	2674192	-21	kworker/u4:8+events_unbound	11:49:15	1
2522608	99	73	29,29	cyclictest	2554267	-21	fschecks_time	09:10:25	0
2522609	99	72	65,5	cyclictest	2709050	-21	kworker/u4:2+events_unbound	12:17:00	1
2522609	99	72	63,7	cyclictest	2573898	-21	kworker/u4:0+events_unbound	09:44:02	1
2522609	99	72	53,6	cyclictest	2709051	-21	kworker/u4:3+events_unbound	12:09:17	1
2522608	99	72	6,62	cyclictest	2598448	-21	ssh	10:00:27	0
2522608	99	72	2,6	cyclictest	2716360	-21	ld	12:15:30	0
2522608	99	68	39,27	cyclictest	2671645	-21	sshd	11:24:53	0
2522609	99	67	60,5	cyclictest	2536710	-21	kworker/u4:4+events_unbound	08:08:52	1
2522608	99	67	37,28	cyclictest	2542271	-21	fschecks_count	08:25:20	0
2522608	99	67	3,60	cyclictest	2541307	-21	ntpq	08:20:24	0
2522608	99	67	19,29	cyclictest	0	-21	swapper/0	10:40:13	0
2522609	99	66	58,6	cyclictest	2544368	-21	kworker/u4:11+events_unbound	08:55:00	1
2522609	99	66	58,6	cyclictest	2539254	-21	kworker/u4:15+events_unbound	08:33:54	1
2522609	99	66	57,7	cyclictest	2717874	-21	kworker/u4:3+events_unbound	12:24:18	1
2522609	99	66	57,6	cyclictest	2643739	-21	kworker/u4:6+events_unbound	11:10:01	1
2522608	99	66	8,52	cyclictest	2572152	-21	ssh	09:30:29	0
2522608	99	66	37,26	cyclictest	2675588	-21	systemd	11:29:13	0
2522608	99	66	36,28	cyclictest	2693567	-21	latency_hist	11:50:01	0
2522608	99	66	2,8	cyclictest	2706765	-21	sed	12:05:02	0
2522608	99	66	26,37	cyclictest	0	-21	swapper/0	11:55:01	0
2522609	99	65	58,5	cyclictest	2536711	-21	kworker/u4:5+events_unbound	08:40:01	1
2522608	99	65	57,6	cyclictest	2604494	-21	kworker/u4:4+events_unbound	10:19:06	0
2522608	99	65	35,28	cyclictest	2563830	-21	unixbench-2d	09:20:37	0
2522608	99	65	33,30	cyclictest	2534181	-21	latency_hist	07:55:00	0
2522609	99	64	54,7	cyclictest	2586651	-21	kworker/u4:3+events_unbound	10:00:43	1
2522608	99	64	3,15	cyclictest	2686088	-21	ps	11:40:43	0
2522608	99	64	2,7	cyclictest	2641115	-21	munin-run	10:50:01	0
2522608	99	64	1,5	cyclictest	2602944	-21	ntpq	10:05:32	0
2522608	99	63	3,55	cyclictest	2606446	-21	apt-get	10:10:10	0
2522608	99	63	3,55	cyclictest	2584588	-21	ssh	09:45:15	0
2522608	99	63	33,27	cyclictest	2530270	-21	sendmail	07:40:00	0
2522608	99	63	32,28	cyclictest	2729918	-21	unixbench_multi	12:30:40	0
2522608	99	63	2,13	cyclictest	2537507	-21	ntpq	08:05:27	0
2522608	99	62	2,5	cyclictest	2546505	-21	ntpq	08:40:31	0
2522608	99	62	2,56	cyclictest	2526607	-21	apt-get	07:25:13	0
2522608	99	62	2,41	cyclictest	37	-21	kcompactd0	10:39:26	0
2522609	99	61	55,4	cyclictest	2586651	-21	kworker/u4:3+events_unbound	09:50:00	1
2522609	99	61	54,5	cyclictest	2537980	-21	kworker/u4:6+events_unbound	09:03:57	1
2522608	99	61	44,10	cyclictest	2641760	-21	fschecks_count	10:50:20	0
2522608	99	61	3,53	cyclictest	2538183	-21	apt-get	08:10:13	0
2522608	99	61	32,27	cyclictest	2734208	-21	timerandwakeup	12:35:41	0
2522608	99	61	28,30	cyclictest	2553193	-21	mailstats	09:05:39	0
2522609	99	60	52,6	cyclictest	2586651	-21	kworker/u4:3+events_unbound	11:00:00	1
2522609	99	60	52,6	cyclictest	2586651	-21	kworker/u4:3+events_unbound	11:00:00	1
2522609	99	60	45,4	cyclictest	2530215	-21	kworker/u4:2+events_unbound	07:50:01	1
2522609	99	60	43,7	cyclictest	2604492	-21	kworker/u4:1+events_unbound	10:22:00	1
2522608	99	60	3,53	cyclictest	2545134	-21	ntpq	08:35:25	0
2522608	99	60	3,52	cyclictest	2615855	-21	ssh	10:20:24	0
2522608	99	60	34,22	cyclictest	0	-21	swapper/0	09:50:30	0
2522608	99	60	29,29	cyclictest	2559439	-21	ssh	09:15:40	0
2522608	99	60	27,29	cyclictest	0	-21	swapper/0	07:15:20	0
2522608	99	60	26,31	cyclictest	2725558	-21	unixbench_multi	12:25:38	0
2522608	99	60	2,14	cyclictest	2534921	-21	ntpq	07:55:30	0
2522608	99	60	2,13	cyclictest	2532327	-21	ntpq	07:45:33	0
2522608	99	60	2,11	cyclictest	2677155	-21	ssh	11:30:29	0
2522608	99	59	3,15	cyclictest	2720004	-21	apt-get	12:20:12	0
2522608	99	59	30,25	cyclictest	0	-21	swapper/0	07:10:36	0
2522608	99	59	23,33	cyclictest	2551190	-21	aten_r7power_cu	09:00:17	0
2522608	99	59	1,56	cyclictest	2620344	-21	ntpq	10:25:30	0
2522609	99	58	53,3	cyclictest	2613336	-21	kworker/u4:14-rpciod	10:31:51	1
2522609	99	58	49,7	cyclictest	0	-21	swapper/1	10:40:26	1
2522608	99	58	4,51	cyclictest	2646736	-21	ps	10:55:38	0
2522608	99	58	4,51	cyclictest	2646736	-21	ps	10:55:38	0
2522608	99	58	2,7	cyclictest	2698188	-21	apt-get	11:55:15	0
2522608	99	58	27,29	cyclictest	2535811	-21	cpu	08:00:17	0
2522608	99	58	25,30	cyclictest	0	-21	swapper/0	11:15:22	0
2522609	99	57	39,5	cyclictest	2541828	-21	kworker/u4:17+events_unbound	08:23:53	1
2522608	99	57	4,47	cyclictest	2540008	-21	ntpq	08:15:26	0
2522608	99	57	3,50	cyclictest	2651120	-21	ps	11:00:38	0
2522608	99	57	3,49	cyclictest	2530997	-21	ntpq	07:40:23	0
2522608	99	57	3,13	cyclictest	2659766	-21	ntpq	11:10:36	0
2522608	99	57	2,51	cyclictest	2528449	-21	ntpq	07:30:25	0
2522608	99	57	22,30	cyclictest	0	-21	swapper/0	11:10:01	0
2522608	99	57	20,34	cyclictest	2593898	-21	awk	09:55:23	0
2522608	99	57	1,14	cyclictest	2624780	-21	ntpq	10:30:32	0
2522609	99	56	51,4	cyclictest	2717874	-21	kworker/u4:3+events_unbound	12:25:02	1
2522609	99	56	50,4	cyclictest	2564998	-21	kworker/u4:0+events_unbound	09:23:58	1
2522608	99	56	3,49	cyclictest	2543927	-21	ntpq	08:30:29	0
2522608	99	56	1,9	cyclictest	2566996	-21	apt-get	09:25:12	0
2522608	99	56	10,42	cyclictest	2678622	-21	kworker/u4:1-rpciod	12:10:05	0
2522608	99	55	48,5	cyclictest	2520094	-21	kworker/u4:1+events_unbound	07:10:01	0
2522608	99	55	2,6	cyclictest	2525334	-21	apt-get	07:20:13	0
2522608	99	55	2,6	cyclictest	2525334	-21	apt-get	07:20:13	0
2522609	99	54	47,5	cyclictest	2628658	-21	/usr/sbin/munin	10:35:21	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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