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 792 highest latencies:

System rack7slot2.osadl.org (updated Mon Jan 26, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2249168	99	120	113,5	cyclictest	2417663	-21	kworker/u4:6+events_unbound	12:06:01	0
2249170	99	109	101,5	cyclictest	2278430	-21	kworker/u4:11+events_unbound	09:05:40	1
2249170	99	99	88,9	cyclictest	2264365	-21	kworker/u4:3+events_unbound	08:35:29	1
2249168	99	96	88,6	cyclictest	2250380	-21	kworker/u4:4+events_unbound	07:20:09	0
2249170	99	92	84,6	cyclictest	2422072	-21	kworker/u4:8+events_unbound	12:00:59	1
2249170	99	89	82,5	cyclictest	2422075	-21	kworker/u4:11+events_unbound	12:11:00	1
2249170	99	81	58,17	cyclictest	2335056	-21	kworker/u4:0+xprtiod	10:15:09	1
2249168	99	81	73,6	cyclictest	2237820	-21	kworker/u4:14+events_unbound	08:05:21	0
2249170	99	80	73,5	cyclictest	2237820	-21	kworker/u4:14+events_unbound	07:55:14	1
2249168	99	80	67,9	cyclictest	54	-21	kswapd0	09:50:08	0
2249170	99	76	68,6	cyclictest	2309017	-21	kworker/u4:3+events_unbound	09:45:45	1
2249168	99	76	69,5	cyclictest	2439561	-21	kworker/u4:4+events_unbound	12:36:03	0
2249168	99	76	68,6	cyclictest	2237814	-21	kworker/u4:9+events_unbound	07:15:11	0
2249170	99	75	69,4	cyclictest	2250382	-21	kworker/u4:7+events_unbound	07:15:00	1
2249170	99	73	66,5	cyclictest	2396289	-21	kworker/u4:0+events_unbound	11:40:58	1
2249170	99	73	63,8	cyclictest	2190706	-21	kworker/u4:10+events_unbound	07:50:15	1
2249168	99	73	56,14	cyclictest	54	-21	kswapd0	10:15:07	0
2249170	99	72	64,6	cyclictest	2357239	-21	kworker/u4:13+events_unbound	10:40:49	1
2249168	99	72	52,17	cyclictest	54	-21	kswapd0	10:30:12	0
2249170	99	70	63,5	cyclictest	2261824	-21	kworker/u4:8+events_unbound	08:10:01	1
2249170	99	70	56,6	cyclictest	2264366	-21	kworker/u4:4+events_unbound	08:20:25	1
2249168	99	69	63,5	cyclictest	2237820	-21	kworker/u4:14+events_unbound	07:10:10	0
2249168	99	69	52,5	cyclictest	2261825	-21	kworker/u4:9+events_unbound	09:12:59	0
2249168	99	68	52,8	cyclictest	2385894	-21	sh	11:10:30	0
2249168	99	67	8,55	cyclictest	0	-21	swapper/0	11:30:28	0
2249170	99	66	59,5	cyclictest	2273300	-21	kworker/u4:20+events_unbound	09:00:01	1
2249170	99	66	59,5	cyclictest	2268257	-21	kworker/u4:10+events_unbound	08:45:35	1
2249168	99	65	47,15	cyclictest	54	-21	kswapd0	11:40:11	0
2249170	99	64	46,6	cyclictest	2250382	-21	kworker/u4:7+events_unbound	07:25:01	1
2249168	99	64	55,6	cyclictest	2261827	-21	kworker/u4:12+events_unbound	08:55:36	0
2249170	99	61	46,6	cyclictest	2452085	-21	kworker/u4:0+events_unbound	12:31:01	1
2249168	99	61	54,5	cyclictest	2343930	-21	kworker/u4:1+events_unbound	10:57:59	0
2249168	99	60	49,8	cyclictest	2262274	-21	sshd	08:00:17	0
2249170	99	59	53,4	cyclictest	0	-21	swapper/1	07:35:12	1
2249168	99	59	48,8	cyclictest	54	-21	kswapd0	10:15:00	0
2249168	99	59	48,8	cyclictest	54	-21	kswapd0	10:15:00	0
2249170	99	57	40,5	cyclictest	2343933	-21	kworker/u4:8+events_unbound	11:00:53	1
2249168	99	57	51,4	cyclictest	2295562	-21	kworker/u4:9+events_unbound	10:06:00	0
2249168	99	57	51,4	cyclictest	2265621	-21	kworker/u4:11+events_unbound	08:25:26	0
2249168	99	56	48,6	cyclictest	2357239	-21	kworker/u4:13+events_unbound	10:47:59	0
2249168	99	56	40,6	cyclictest	255	50	irq/23-42890000.ethernet	08:45:07	0
2249168	99	55	39,10	cyclictest	0	-21	swapper/0	10:27:20	0
2249170	99	54	45,6	cyclictest	2260567	-21	kworker/u4:2-rpciod	08:44:59	1
2249170	99	54	33,7	cyclictest	2312857	-21	kworker/u4:6+events_unbound	09:50:45	1
2249168	99	54	48,4	cyclictest	2419876	-21	aten2__	11:50:16	0
2249168	99	54	47,5	cyclictest	2357236	-21	kworker/u4:0+events_unbound	10:37:43	0
2249168	99	54	41,9	cyclictest	54	-21	kswapd0	12:15:00	0
2249168	99	54	41,11	cyclictest	0	-21	swapper/0	09:30:14	0
2249168	99	54	33,18	cyclictest	2422073	-21	kworker/u4:9+rpciod	12:02:21	0
2249170	99	53	49,2	cyclictest	2417662	-21	kworker/u4:4+events_unbound	11:51:44	1
2249170	99	53	46,5	cyclictest	2264364	-21	kworker/u4:1+events_unbound	08:50:36	1
2249170	99	53	45,6	cyclictest	2250382	-21	kworker/u4:7+events_unbound	07:25:10	1
2249170	99	53	38,12	cyclictest	0	-21	swapper/1	12:15:11	1
2249170	99	53	35,7	cyclictest	2261824	-21	kworker/u4:8+events_unbound	08:30:28	1
2249168	99	53	47,4	cyclictest	2383043	-21	kworker/u4:7+events_unbound	11:07:42	0
2249168	99	53	45,6	cyclictest	2293709	-21	fschecks_count	09:25:20	0
2249168	99	53	41,9	cyclictest	0	-21	swapper/0	09:15:25	0
2249168	99	53	34,7	cyclictest	2264365	-21	kworker/u4:3+events_unbound	08:35:52	0
2249168	99	52	29,15	cyclictest	15	1	ktimers/0	11:20:10	0
2249170	99	51	44,6	cyclictest	2269026	-21	sshd	08:25:24	1
2249168	99	51	44,5	cyclictest	2416120	-21	/usr/sbin/munin	11:45:22	0
2249168	99	51	41,8	cyclictest	388	-21	dbus-daemon	12:26:00	0
2249168	99	51	41,7	cyclictest	2273314	-21	cron	08:45:00	0
2249168	99	51	37,11	cyclictest	2441761	-21	fschecks_time	12:15:20	0
2249170	99	50	43,5	cyclictest	2249102	-21	kworker/u4:3+events_unbound	07:50:01	1
2249170	99	50	43,5	cyclictest	2249102	-21	kworker/u4:3+events_unbound	07:50:00	1
2249170	99	50	42,6	cyclictest	2391834	-21	kworker/u4:13+events_unbound	11:30:37	1
2249170	99	50	40,7	cyclictest	2282007	-21	kworker/u4:2+events_unbound	09:20:44	1
2249168	99	50	43,6	cyclictest	2268258	-21	kworker/u4:13+events_unbound	08:50:03	0
2249168	99	50	27,7	cyclictest	2302264	-21	aten_r7power_cu	09:35:16	0
2249170	99	49	42,5	cyclictest	2399040	-21	/usr/sbin/munin	11:25:34	1
2249170	99	49	41,6	cyclictest	2378611	-21	kworker/u4:5+events_unbound	11:50:00	1
2249170	99	49	41,6	cyclictest	2269512	-21	kworker/u4:18+events_unbound	09:16:59	1
2249168	99	49	42,5	cyclictest	2424383	-21	/usr/sbin/munin	11:55:17	0
2249168	99	49	41,6	cyclictest	314	-21	systemd-journal	10:50:49	0
2249168	99	49	41,6	cyclictest	314	-21	systemd-journal	10:50:48	0
2249168	99	49	41,6	cyclictest	2454841	-21	sed	12:30:21	0
2249168	99	49	41,6	cyclictest	2249166	-21	cyclictest	11:39:56	0
2249168	99	49	40,7	cyclictest	2374221	-21	kworker/u4:9-rpciod	11:00:41	0
2249170	99	48	7,32	cyclictest	2298701	-21	ssh	09:30:37	1
2249170	99	48	38,6	cyclictest	0	-21	swapper/1	10:30:18	1
2249168	99	48	41,5	cyclictest	2447706	-21	kworker/u4:7+events_unbound	12:22:00	0
2249168	99	48	41,5	cyclictest	2250382	-21	kworker/u4:7+events_unbound	09:05:42	0
2249168	99	48	26,19	cyclictest	15	1	ktimers/0	10:40:27	0
2249168	99	48	19,23	cyclictest	0	-21	swapper/0	07:25:08	0
2249170	99	47	6,28	cyclictest	2294053	-21	ssh	09:25:28	1
2249170	99	47	41,4	cyclictest	2424359	-21	df_abs	11:55:17	1
2249170	99	47	40,6	cyclictest	54	-21	kswapd0	11:35:33	1
2249170	99	47	40,5	cyclictest	2325230	-21	switchtime	10:00:36	1
2249170	99	47	40,5	cyclictest	2281225	-21	unixbench_multi	09:10:38	1
2249170	99	47	39,6	cyclictest	2306804	-21	aten_r7power_vo	09:40:17	1
2249168	99	47	40,5	cyclictest	2339508	-21	kworker/u4:9+events_unbound	10:20:59	0
2249168	99	47	40,5	cyclictest	2315181	-21	munin-run	09:50:01	0
2249168	99	47	39,6	cyclictest	2256857	-21	latency_hist	07:40:00	0
2249168	99	47	39,5	cyclictest	2237820	-21	kworker/u4:14+events_unbound	07:42:59	0
2249168	99	47	35,10	cyclictest	2307948	-21	sh	09:40:38	0
2249168	99	47	34,9	cyclictest	2273300	-21	kworker/u4:20-xprtiod	09:00:34	0
2249168	99	47	26,17	cyclictest	0	-21	swapper/0	10:00:16	0
2249170	99	46	38,6	cyclictest	2450195	-21	aten_r7power_vo	12:25:19	1
2249170	99	46	37,7	cyclictest	2278466	-21	grep	09:05:00	1
2249170	99	46	23,9	cyclictest	2374221	-21	kworker/u4:9+events_unbound	11:05:28	1
2249168	99	46	40,4	cyclictest	2390715	-21	unixbench_singl	11:15:39	0
2249168	99	46	40,4	cyclictest	2250382	-21	kworker/u4:7+events_unbound	07:50:37	0
2249168	99	46	39,5	cyclictest	2398620	-21	gltestperf	11:25:20	0
2249168	99	46	39,5	cyclictest	2258358	-21	aten_r7power_po	07:45:18	0
2249168	99	46	39,5	cyclictest	2258358	-21	aten_r7power_po	07:45:18	0
2249168	99	46	37,7	cyclictest	2321135	-21	kthreadd	09:55:38	0
2249170	99	45	38,5	cyclictest	2432999	-21	ssh	12:05:17	1
2249170	99	45	37,6	cyclictest	2346137	-21	aten2__	10:25:20	1
2249168	99	45	38,5	cyclictest	2240354	-21	kworker/u4:1+events_unbound	07:30:03	0
2249170	99	44	38,4	cyclictest	2390723	-21	unixbench_singl	11:15:39	1
2249170	99	44	37,5	cyclictest	2302834	-21	ntp_kernel_err	09:35:24	1
2249170	99	44	37,5	cyclictest	2249166	-21	cyclictest	11:12:13	1
2249170	99	44	36,6	cyclictest	2317990	-21	kworker/u4:13+events_unbound	10:05:46	1
2249170	99	44	36,6	cyclictest	2255524	-21	kworker/u4:5+events_unbound	08:10:22	1
2249170	99	44	36,6	cyclictest	0	-21	swapper/1	08:15:23	1
2249168	99	44	9,32	cyclictest	0	-21	swapper/0	08:15:08	0
2249168	99	44	37,5	cyclictest	2261824	-21	kworker/u4:8+events_unbound	08:30:04	0
2249168	99	44	35,7	cyclictest	2264580	-21	aten2__	08:10:17	0
2249168	99	44	32,5	cyclictest	2260566	-21	kworker/u4:1+events_unbound	07:55:03	0
2249170	99	43	37,4	cyclictest	2342849	-21	unixbench-2d	10:20:40	1
2249170	99	43	36,5	cyclictest	2459288	-21	netstat	12:35:23	1
2249170	99	43	36,5	cyclictest	2449727	-21	awk	12:25:01	1
2249170	99	43	34,7	cyclictest	2373197	-21	timerandwakeup	10:55:37	1
2249170	99	42	36,4	cyclictest	2319848	-21	aten2__	09:55:14	1
2249170	99	42	36,4	cyclictest	0	-21	swapper/1	10:45:48	1
2249170	99	42	34,6	cyclictest	2393854	-21	acpi	11:20:14	1
2249170	99	42	34,6	cyclictest	0	-21	swapper/1	07:40:32	1
2249170	99	42	33,7	cyclictest	2368714	-21	open_files	10:50:41	1
2249170	99	42	33,7	cyclictest	2368714	-21	open_files	10:50:41	1
2249170	99	42	32,7	cyclictest	0	-21	swapper/1	10:10:26	1
2249170	99	42	32,7	cyclictest	0	-21	swapper/1	10:10:26	1
2249168	99	42	36,5	cyclictest	2266976	-21	kworker/u4:0+events_unbound	08:24:58	0
2249168	99	42	35,5	cyclictest	2275896	-21	kworker/u4:6+events_unbound	09:20:02	0
2249170	99	41	34,5	cyclictest	2358824	-21	apt	10:40:01	1
2249170	99	40	32,6	cyclictest	2250926	-21	fschecks_time	07:15:19	1
2249170	99	39	30,7	cyclictest	0	-21	swapper/1	08:00:16	1
2249170	99	36	28,6	cyclictest	2249102	-21	kworker/u4:3+events_unbound	07:30:13	1
2249168	99	32	20,8	cyclictest	15	1	ktimers/0	07:10:01	0
2249170	99	24	16,5	cyclictest	0	-21	swapper/1	07:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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