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 highest latencies:

System rack7slot2.osadl.org (updated Thu Feb 26, 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
2590074	99	160	131,10	cyclictest	2675226	-21	kworker/u4:5+events_unbound	22:26:54	0
2590074	99	106	97,6	cyclictest	2756425	-21	kworker/u4:10+events_unbound	00:18:22	0
2590074	99	94	86,6	cyclictest	2675225	-21	kworker/u4:4+events_unbound	22:16:52	0
2590074	99	94	81,6	cyclictest	2717659	-21	kworker/u4:8+events_unbound	23:22:06	0
2590074	99	90	82,6	cyclictest	2675226	-21	kworker/u4:5+events_unbound	22:36:57	0
2590074	99	90	82,6	cyclictest	2662101	-21	kworker/u4:7+events_unbound	21:56:48	0
2590074	99	88	80,6	cyclictest	2709636	-21	kworker/u4:6+events_unbound	22:57:01	0
2590074	99	88	70,6	cyclictest	2670902	-21	kworker/u4:18+events_unbound	22:11:51	0
2590074	99	85	77,6	cyclictest	2636428	-21	kworker/u4:2+events_unbound	21:41:44	0
2590074	99	79	72,5	cyclictest	2599084	-21	kworker/u4:9+events_unbound	19:56:23	0
2590074	99	78	7,64	cyclictest	0	-21	swapper/0	00:10:33	0
2590074	99	78	70,6	cyclictest	2566130	-21	kworker/u4:10+events_unbound	19:11:13	0
2590075	99	76	60,13	cyclictest	2604266	-21	systemd	20:01:21	1
2590074	99	76	70,4	cyclictest	2683998	-21	kworker/u4:9+events_unbound	23:07:03	0
2590074	99	76	68,6	cyclictest	2790097	-21	kworker/u4:7+events_unbound	00:33:42	0
2590074	99	76	67,7	cyclictest	2575211	-21	kworker/u4:0+events_unbound	19:50:01	0
2590075	99	73	3,60	cyclictest	2797141	-21	ssh	00:35:33	1
2590074	99	73	66,5	cyclictest	2593892	-21	kworker/u4:15+events_unbound	19:31:18	0
2590074	99	73	65,6	cyclictest	2610664	-21	kworker/u4:8+events_unbound	20:56:35	0
2590074	99	72	57,7	cyclictest	2760731	-21	kworker/u4:0+events_unbound	23:55:00	0
2590075	99	71	10,53	cyclictest	2673851	-21	ssh	22:10:31	1
2590074	99	71	53,5	cyclictest	2592573	-21	kworker/u4:5+events_unbound	20:05:01	0
2590074	99	66	59,5	cyclictest	2593892	-21	kworker/u4:15+events_unbound	20:11:25	0
2590074	99	64	57,5	cyclictest	2756425	-21	kworker/u4:10+events_unbound	23:57:28	0
2590075	99	63	56,5	cyclictest	2734908	-21	kworker/u4:11+events_unbound	00:08:12	1
2590075	99	63	50,8	cyclictest	0	-21	swapper/1	23:10:10	1
2590074	99	63	54,7	cyclictest	2610659	-21	kworker/u4:1+events_unbound	21:15:00	0
2590074	99	63	54,7	cyclictest	2610659	-21	kworker/u4:1+events_unbound	21:15:00	0
2590074	99	61	54,5	cyclictest	2743468	-21	kworker/u4:13+events_unbound	23:32:06	0
2590074	99	61	53,6	cyclictest	2640792	-21	kworker/u4:1+events_unbound	21:53:44	0
2590075	99	60	1,49	cyclictest	2682571	-21	sshd	22:20:40	1
2590074	99	60	54,4	cyclictest	2675225	-21	kworker/u4:4+events_unbound	22:21:53	0
2590074	99	60	42,5	cyclictest	2653969	-21	kworker/u4:5+events_unbound	22:00:02	0
2590074	99	60	39,7	cyclictest	2772955	-21	kworker/u4:9+events_unbound	00:20:15	0
2590074	99	60	39,7	cyclictest	2772955	-21	kworker/u4:9+events_unbound	00:20:15	0
2590075	99	58	9,33	cyclictest	2699754	-21	ssh	22:40:33	1
2590074	99	58	51,5	cyclictest	2610659	-21	kworker/u4:1+events_unbound	20:46:33	0
2590075	99	57	9,37	cyclictest	2665132	-21	ssh	22:00:27	1
2590075	99	57	38,11	cyclictest	0	-21	swapper/1	23:35:27	1
2590074	99	57	49,6	cyclictest	2593893	-21	kworker/u4:16+events_unbound	20:25:01	0
2590075	99	56	50,4	cyclictest	2751504	-21	kthreadd	23:41:07	1
2590074	99	56	49,5	cyclictest	2593893	-21	kworker/u4:16+events_unbound	20:26:29	0
2590074	99	56	47,6	cyclictest	2651587	-21	aten_r7power_po	21:45:14	0
2590074	99	56	46,8	cyclictest	2734908	-21	kworker/u4:11+events_unbound	23:27:05	0
2590074	99	56	46,8	cyclictest	2599074	-21	systemd	19:41:18	0
2590074	99	56	45,5	cyclictest	2726912	-21	kworker/u4:10+events_unbound	23:17:01	0
2590074	99	56	38,7	cyclictest	2717659	-21	kworker/u4:8+events_unbound	23:05:00	0
2590074	99	56	36,11	cyclictest	0	-21	swapper/0	22:50:17	0
2590075	99	54	5,37	cyclictest	2707585	-21	apt-get	22:50:15	1
2590074	99	54	47,5	cyclictest	2683998	-21	kworker/u4:9+events_unbound	22:43:00	0
2590074	99	54	47,5	cyclictest	2632074	-21	kworker/u4:11+events_unbound	21:22:59	0
2590074	99	54	46,6	cyclictest	2746609	-21	mailstats	23:35:36	0
2590074	99	54	46,6	cyclictest	2722587	-21	kworker/u4:2+events_unbound	23:10:43	0
2590074	99	54	43,9	cyclictest	2760731	-21	kworker/u4:0+events_unbound	00:09:59	0
2590074	99	54	38,5	cyclictest	2752123	-21	kworker/u4:5+events_unbound	23:42:59	0
2590075	99	53	42,8	cyclictest	2767914	-21	xargs	00:00:40	1
2590075	99	52	5,41	cyclictest	2626371	-21	sh	21:15:31	1
2590074	99	52	45,5	cyclictest	2592577	-21	kworker/u4:10+events_unbound	20:51:34	0
2590074	99	52	44,5	cyclictest	2767285	-21	gltestperf	00:00:21	0
2590074	99	52	44,5	cyclictest	2590073	-21	cyclictest	00:25:36	0
2590074	99	52	39,6	cyclictest	2688370	-21	kworker/u4:3+events_unbound	22:31:59	0
2590075	99	51	43,6	cyclictest	2754419	-21	entropy	23:45:18	1
2590075	99	51	43,6	cyclictest	2638930	-21	fschecks_time	21:30:19	1
2590075	99	51	42,7	cyclictest	2775374	-21	aten_r7power_po	00:10:14	1
2590075	99	51	37,9	cyclictest	2601729	-21	modprobe	19:55:01	1
2590074	99	51	27,17	cyclictest	2590051	-21	munin-run	19:10:00	0
2590075	99	50	45,4	cyclictest	2593887	-21	kworker/u4:8+events_unbound	19:26:17	1
2590074	99	50	43,5	cyclictest	2601637	-21	unixbench_multi	19:50:43	0
2590074	99	50	32,16	cyclictest	2590073	-21	cyclictest	22:05:48	0
2590074	99	50	31,17	cyclictest	2591750	-21	fschecks_count	19:15:18	0
2590075	99	49	9,14	cyclictest	2719009	-21	ssh	23:03:27	1
2590075	99	49	39,6	cyclictest	0	-21	swapper/1	21:20:27	1
2590075	99	49	34,11	cyclictest	37	-21	kcompactd0	23:55:39	1
2590074	99	49	42,5	cyclictest	2626182	-21	/usr/sbin/munin	21:15:25	0
2590074	99	49	32,8	cyclictest	2636430	-21	kworker/u4:4+events_unbound	21:29:01	0
2590075	99	48	9,15	cyclictest	2792039	-21	ssh	00:30:05	1
2590075	99	48	41,4	cyclictest	2712237	-21	gltestperf	22:55:24	1
2590075	99	48	39,7	cyclictest	2695551	-21	/usr/sbin/munin	22:35:36	1
2590075	99	48	39,6	cyclictest	2681353	-21	sendmail	22:20:00	1
2590075	99	48	16,19	cyclictest	0	-21	swapper/1	21:35:33	1
2590075	99	48	10,14	cyclictest	2692765	-21	ssh	22:32:33	1
2590074	99	48	41,5	cyclictest	2601710	-21	kworker/u4:18+events_unbound	20:16:26	0
2590074	99	48	32,14	cyclictest	2640793	-21	kworker/u4:6+events_unbound	21:32:31	0
2590075	99	47	40,5	cyclictest	2649572	-21	kworker/u4:12+events_unbound	21:51:47	1
2590075	99	47	40,5	cyclictest	2634487	-21	sed	21:25:18	1
2590075	99	47	38,6	cyclictest	2590073	-21	cyclictest	23:15:40	1
2590075	99	47	30,13	cyclictest	0	-21	swapper/1	23:50:20	1
2590075	99	47	18,10	cyclictest	0	-21	swapper/1	23:25:31	1
2590075	99	47	10,10	cyclictest	2649738	-21	ssh	21:42:42	1
2590074	99	47	40,5	cyclictest	2688367	-21	kworker/u4:0+events_unbound	22:45:01	0
2590074	99	47	40,5	cyclictest	2612907	-21	cat	20:35:36	0
2590074	99	47	40,5	cyclictest	2592577	-21	kworker/u4:10+events_unbound	21:01:36	0
2590074	99	47	40,5	cyclictest	2592577	-21	kworker/u4:10+events_unbound	21:01:36	0
2590074	99	47	38,7	cyclictest	2640793	-21	kworker/u4:6+events_unbound	21:39:41	0
2590074	99	47	38,6	cyclictest	2754684	-21	/usr/sbin/munin	23:45:21	0
2590074	99	47	27,17	cyclictest	0	-21	swapper/0	21:05:15	0
2590075	99	46	39,5	cyclictest	2741880	-21	gltestperf	23:30:22	1
2590075	99	46	39,5	cyclictest	2598387	-21	grep	19:40:19	1
2590075	99	46	38,5	cyclictest	2675226	-21	kworker/u4:5-rpciod	23:20:24	1
2590075	99	46	36,7	cyclictest	0	-21	swapper/1	00:20:31	1
2590075	99	46	36,7	cyclictest	0	-21	swapper/1	00:20:31	1
2590075	99	46	11,11	cyclictest	2722978	-21	ssh	23:08:01	1
2590075	99	46	10,11	cyclictest	2779439	-21	ssh	00:15:09	1
2590074	99	46	37,7	cyclictest	2596776	-21	aten_r7power_en	19:35:15	0
2590075	99	45	9,19	cyclictest	0	-21	swapper/1	22:45:35	1
2590075	99	45	37,6	cyclictest	2608128	-21	idleruntime-cro	20:20:01	1
2590075	99	45	37,5	cyclictest	2596999	-21	fschecks_count	19:35:19	1
2590075	99	45	35,6	cyclictest	0	-21	swapper/1	21:55:20	1
2590075	99	44	37,4	cyclictest	2652539	-21	timerandwakeup	21:45:35	1
2590075	99	44	34,8	cyclictest	2593749	-21	unixbench-2d	19:20:37	1
2590075	99	44	34,7	cyclictest	2615786	-21	cron	20:50:00	1
2590075	99	44	34,7	cyclictest	0	-21	swapper/1	20:05:24	1
2590074	99	44	34,5	cyclictest	0	-21	swapper/0	00:39:25	0
2590075	99	43	37,4	cyclictest	2669712	-21	mailstats	22:05:36	1
2590075	99	43	37,4	cyclictest	2621648	-21	gltestperf	21:10:20	1
2590075	99	43	37,4	cyclictest	2621648	-21	gltestperf	21:10:20	1
2590075	99	43	36,5	cyclictest	2686304	-21	/usr/sbin/munin	22:25:19	1
2590075	99	43	36,5	cyclictest	2611938	-21	kworker/u4:13+events_unbound	20:35:01	1
2590075	99	43	35,5	cyclictest	2592231	-21	sendmail_mailqu	19:15:34	1
2590075	99	43	34,6	cyclictest	0	-21	swapper/1	00:25:26	1
2590074	99	43	37,4	cyclictest	2595304	-21	wc	19:30:01	0
2590075	99	42	9,10	cyclictest	2620416	-21	ntpq	21:05:28	1
2590074	99	42	35,5	cyclictest	2613497	-21	aten_r7power_en	20:40:15	0
2590074	99	42	31,5	cyclictest	2593886	-21	kworker/u4:7+events_unbound	20:08:01	0
2590075	99	41	7,10	cyclictest	2606335	-21	ntpq	20:10:28	1
2590075	99	41	31,5	cyclictest	0	-21	swapper/1	19:50:02	1
2590075	99	41	28,10	cyclictest	0	-21	swapper/1	19:30:40	1
2590074	99	41	33,5	cyclictest	2592577	-21	kworker/u4:10-rpciod	19:20:36	0
2590075	99	40	33,5	cyclictest	0	-21	swapper/1	19:55:21	1
2590075	99	40	32,6	cyclictest	0	-21	swapper/1	20:40:01	1
2590075	99	40	31,7	cyclictest	2610664	-21	kworker/u4:8-rpciod	20:55:17	1
2590075	99	40	30,7	cyclictest	0	-21	swapper/1	19:15:01	1
2590075	99	40	20,17	cyclictest	2608941	-21	ntpq	20:20:30	1
2590074	99	40	32,5	cyclictest	0	-21	swapper/0	20:30:38	0
2590075	99	39	28,8	cyclictest	0	-21	swapper/1	21:00:36	1
2590075	99	39	28,8	cyclictest	0	-21	swapper/1	21:00:36	1
2590075	99	39	26,9	cyclictest	0	-21	swapper/1	20:50:23	1
2590075	99	39	24,11	cyclictest	2614005	-21	ntpq	20:40:27	1
2590075	99	37	26,9	cyclictest	0	-21	swapper/1	20:25:17	1
2590075	99	35	25,6	cyclictest	0	-21	swapper/1	19:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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