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 07, 2026 00:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2538317	99	105	97,6	cyclictest	2599093	-21	kworker/u4:1+events_unbound	21:46:00	0
2538317	99	97	89,6	cyclictest	2567950	-21	kworker/u4:3+events_unbound	21:15:55	0
2538317	99	93	86,5	cyclictest	2661082	-21	kworker/u4:1+events_unbound	23:01:12	0
2538317	99	93	86,5	cyclictest	2545932	-21	kworker/u4:17+events_unbound	19:45:36	0
2538317	99	92	84,6	cyclictest	2564107	-21	kworker/u4:15+events_unbound	21:20:56	0
2538317	99	90	82,6	cyclictest	2621125	-21	kworker/u4:10+events_unbound	22:41:09	0
2538317	99	90	82,6	cyclictest	2564107	-21	kworker/u4:15+events_unbound	21:40:59	0
2538317	99	88	81,5	cyclictest	2616590	-21	kworker/u4:5+events_unbound	22:16:05	0
2538317	99	85	79,4	cyclictest	2722736	-21	kworker/u4:13+events_unbound	00:18:38	0
2538317	99	84	76,6	cyclictest	2599094	-21	kworker/u4:4+events_unbound	21:51:01	0
2538318	99	83	28,30	cyclictest	0	-21	swapper/1	21:20:24	1
2538317	99	80	73,5	cyclictest	2625661	-21	kworker/u4:12+events_unbound	22:21:06	0
2538317	99	79	68,8	cyclictest	2594537	-21	kworker/u4:10+events_unbound	21:40:01	0
2538317	99	78	65,11	cyclictest	2670124	-21	kworker/u4:8+events_unbound	23:06:13	0
2538318	99	77	29,28	cyclictest	0	-21	swapper/1	22:40:33	1
2538317	99	77	69,6	cyclictest	2727190	-21	kworker/u4:0+events_unbound	00:08:28	0
2538317	99	75	68,5	cyclictest	2740686	-21	kworker/u4:1+events_unbound	00:29:57	0
2538317	99	75	64,5	cyclictest	2722736	-21	kworker/u4:13+events_unbound	00:15:00	0
2538318	99	74	48,17	cyclictest	0	-21	swapper/1	23:45:11	1
2538317	99	74	67,5	cyclictest	2682943	-21	kworker/u4:12+events_unbound	23:31:19	0
2538318	99	73	26,26	cyclictest	0	-21	swapper/1	23:15:39	1
2538318	99	72	39,31	cyclictest	2722002	-21	awk	00:00:42	1
2538318	99	72	25,32	cyclictest	2550746	-21	proc_pri	19:55:38	1
2538318	99	71	37,31	cyclictest	2628135	-21	gltestperf	22:15:22	1
2538318	99	71	23,30	cyclictest	0	-21	swapper/1	21:56:36	1
2538317	99	71	49,10	cyclictest	2707442	-21	ssh	23:45:11	0
2538317	99	70	62,6	cyclictest	2656580	-21	kworker/u4:8+events_unbound	22:51:10	0
2538318	99	69	2,14	cyclictest	2639850	-21	ssh	22:28:41	1
2538318	99	69	2,13	cyclictest	2622899	-21	ssh	22:09:56	1
2538317	99	69	62,5	cyclictest	2555064	-21	kworker/u4:10+events_unbound	20:20:02	0
2538318	99	67	44,20	cyclictest	315	-21	systemd-journal	23:06:13	1
2538318	99	67	3,59	cyclictest	2712519	-21	ssh	23:50:24	1
2538318	99	67	3,56	cyclictest	2606115	-21	ntpq	21:50:26	1
2538318	99	67	35,30	cyclictest	2689505	-21	sed	23:25:01	1
2538318	99	67	1,15	cyclictest	2635402	-21	ssh	22:23:38	1
2538318	99	66	45,19	cyclictest	2538315	-21	cyclictest	22:35:01	1
2538318	99	66	37,27	cyclictest	2720470	-21	latency_hist	00:00:01	1
2538318	99	66	35,29	cyclictest	2734591	-21	awk	00:15:23	1
2538318	99	66	34,29	cyclictest	0	-21	swapper/1	19:15:15	1
2538318	99	66	20,43	cyclictest	0	-21	swapper/1	21:25:22	1
2538318	99	65	18,27	cyclictest	0	-21	swapper/1	21:40:01	1
2538317	99	65	57,6	cyclictest	2745156	-21	kworker/u4:4+events_unbound	00:33:43	0
2538318	99	64	27,33	cyclictest	0	-21	swapper/1	22:45:29	1
2538318	99	64	2,4	cyclictest	2698562	-21	ssh	23:35:11	1
2538317	99	64	57,5	cyclictest	2555064	-21	kworker/u4:10+events_unbound	20:30:45	0
2538318	99	62	29,30	cyclictest	0	-21	swapper/1	22:55:17	1
2538318	99	62	29,30	cyclictest	0	-21	swapper/1	22:55:17	1
2538318	99	61	53,6	cyclictest	2542122	-21	kworker/u4:15+events_unbound	19:25:01	1
2538318	99	61	51,8	cyclictest	2534604	-21	kworker/u4:4+events_unbound	20:00:40	1
2538318	99	61	29,30	cyclictest	0	-21	swapper/1	21:15:54	1
2538318	99	61	26,32	cyclictest	2596912	-21	grep	21:40:20	1
2538317	99	61	48,7	cyclictest	2534604	-21	kworker/u4:4+events_unbound	19:20:01	0
2538318	99	60	32,25	cyclictest	2548513	-21	cron	19:50:00	1
2538317	99	60	53,5	cyclictest	2564108	-21	kworker/u4:16+events_unbound	20:50:50	0
2538318	99	59	6,47	cyclictest	2738387	-21	apt-get	00:20:15	1
2538318	99	59	4,50	cyclictest	2559699	-21	ntpq	20:30:27	1
2538318	99	59	38,18	cyclictest	2587521	-21	apt	21:30:13	1
2538318	99	59	27,30	cyclictest	2752087	-21	if_eth0	00:35:19	1
2538318	99	59	2,17	cyclictest	2733665	-21	ssh	00:15:00	1
2538317	99	59	52,5	cyclictest	2555064	-21	kworker/u4:10+events_unbound	20:35:45	0
2538317	99	59	51,6	cyclictest	2755848	-21	latency_hist	00:40:02	0
2538318	99	58	9,45	cyclictest	2747184	-21	diskmemload	00:30:11	1
2538318	99	58	37,18	cyclictest	2662990	-21	latency_hist	22:55:02	1
2538318	99	58	3,18	cyclictest	2703697	-21	ntpq	23:40:25	1
2538318	99	58	29,26	cyclictest	0	-21	swapper/1	22:10:21	1
2538318	99	58	26,28	cyclictest	0	-21	swapper/1	21:10:17	1
2538318	99	58	25,30	cyclictest	2547196	-21	unixbench_singl	19:40:38	1
2538318	99	58	25,29	cyclictest	0	-21	swapper/1	23:10:51	1
2538318	99	57	3,10	cyclictest	2694900	-21	ssh	23:30:29	1
2538318	99	57	28,26	cyclictest	2599095	-21	kworker/u4:5-rpciod	21:45:27	1
2538318	99	57	27,26	cyclictest	0	-21	swapper/1	22:35:29	1
2538318	99	57	24,31	cyclictest	0	-21	swapper/1	00:25:16	1
2538318	99	57	2,14	cyclictest	2614353	-21	apt-get	22:00:13	1
2538318	99	57	1,5	cyclictest	2668515	-21	ssh	23:00:34	1
2538317	99	57	46,9	cyclictest	2698926	-21	fschecks_count	23:35:19	0
2538318	99	56	34,19	cyclictest	2553104	-21	gltestperf	20:05:24	1
2538318	99	56	1,11	cyclictest	2562311	-21	ntpq	20:40:28	1
2538317	99	56	49,5	cyclictest	2534603	-21	kworker/u4:3+events_unbound	20:10:42	0
2538317	99	56	48,6	cyclictest	315	-21	systemd-journal	20:01:08	0
2538317	99	56	48,6	cyclictest	2534603	-21	kworker/u4:3+events_unbound	19:40:34	0
2538318	99	55	4,5	cyclictest	2558437	-21	ntpq	20:25:29	1
2538318	99	55	3,47	cyclictest	2725931	-21	ssh	00:05:32	1
2538318	99	55	2,14	cyclictest	2564531	-21	diskstats	20:50:19	1
2538318	99	55	2,14	cyclictest	2544213	-21	ntpq	19:30:31	1
2538318	99	55	2,13	cyclictest	2692131	-21	ssh	23:27:18	1
2538317	99	55	48,5	cyclictest	15	1	ktimers/0	00:22:08	0
2538317	99	55	46,6	cyclictest	2541663	-21	sshd	19:20:27	0
2538317	99	55	37,7	cyclictest	2585442	-21	kworker/u4:3+events_unbound	21:30:42	0
2538318	99	54	2,13	cyclictest	2563646	-21	ntpq	20:45:37	1
2538318	99	54	2,13	cyclictest	2560934	-21	ntpq	20:35:27	1
2538318	99	54	2,11	cyclictest	2539004	-21	ntpq	19:10:21	1
2538318	99	54	1,12	cyclictest	2566176	-21	ntpq	20:55:28	1
2538317	99	54	46,6	cyclictest	2714390	-21	kworker/u4:2+events_unbound	00:05:00	0
2538317	99	54	32,20	cyclictest	2716457	-21	aten_r7power_vo	23:55:17	0
2538318	99	53	4,45	cyclictest	2548760	-21	/usr/sbin/munin	19:50:09	1
2538318	99	53	23,27	cyclictest	0	-21	swapper/1	21:05:23	1
2538318	99	53	1,13	cyclictest	2554600	-21	ntpq	20:10:28	1
2538318	99	53	1,13	cyclictest	2545416	-21	ntpq	19:35:25	1
2538317	99	53	46,5	cyclictest	2661086	-21	kworker/u4:9+events_unbound	22:55:59	0
2538317	99	53	46,5	cyclictest	2661086	-21	kworker/u4:9+events_unbound	22:55:58	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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