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 Sun Feb 01, 2026 12:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2245589	99	113	105,6	cyclictest	2345150	-21	kworker/u4:1+events_unbound	10:39:29	0
2245589	99	110	102,6	cyclictest	2345151	-21	kworker/u4:2+events_unbound	11:09:34	0
2245589	99	100	92,6	cyclictest	2192243	-21	kworker/u4:10+events_unbound	07:43:59	0
2245591	99	99	91,6	cyclictest	2309427	-21	kworker/u4:9+events_unbound	09:54:15	1
2245589	99	96	89,5	cyclictest	2375310	-21	kworker/u4:0+events_unbound	11:04:31	0
2245591	99	93	85,6	cyclictest	2296603	-21	kworker/u4:11+events_unbound	09:34:12	1
2245589	99	93	84,7	cyclictest	2340708	-21	kworker/u4:7+events_unbound	10:29:26	0
2245589	99	91	84,5	cyclictest	2264766	-21	kworker/u4:5+events_unbound	08:49:06	0
2245591	99	90	81,7	cyclictest	2392754	-21	kworker/u4:5+events_unbound	11:39:41	1
2245589	99	85	78,5	cyclictest	2245587	-21	cyclictest	11:40:09	0
2245589	99	85	78,5	cyclictest	2245587	-21	cyclictest	11:40:09	0
2245589	99	85	72,10	cyclictest	54	-21	kswapd0	10:30:09	0
2245591	99	81	73,6	cyclictest	2345151	-21	kworker/u4:2+events_unbound	11:14:35	1
2245589	99	78	63,11	cyclictest	2433571	-21	latency_hist	12:10:01	0
2245589	99	76	71,3	cyclictest	2266025	-21	kworker/u4:15+events_unbound	08:29:05	0
2245589	99	76	69,5	cyclictest	2192243	-21	kworker/u4:10+events_unbound	07:28:57	0
2245589	99	75	67,6	cyclictest	2323485	-21	kworker/u4:5+events_unbound	10:09:22	0
2245589	99	74	55,16	cyclictest	2449082	-21	kworker/u4:11+events_unbound	12:29:50	0
2245589	99	74	55,16	cyclictest	2449082	-21	kworker/u4:11+events_unbound	12:29:50	0
2245589	99	73	65,6	cyclictest	2256996	-21	kworker/u4:2+events_unbound	08:24:05	0
2245589	99	73	65,6	cyclictest	2256996	-21	kworker/u4:2+events_unbound	08:24:05	0
2245591	99	72	65,5	cyclictest	2246797	-21	kworker/u4:8+events_unbound	07:13:54	1
2245591	99	70	62,6	cyclictest	2223030	-21	kworker/u4:2+events_unbound	07:23:58	1
2245589	99	68	61,5	cyclictest	2266022	-21	kworker/u4:10+events_unbound	08:39:06	0
2245589	99	68	61,5	cyclictest	2266022	-21	kworker/u4:10+events_unbound	08:39:05	0
2245589	99	68	30,32	cyclictest	0	-21	swapper/0	09:55:27	0
2245589	99	67	60,5	cyclictest	2253118	-21	kworker/u4:7+events_unbound	08:19:04	0
2245589	99	67	59,6	cyclictest	2192243	-21	kworker/u4:10+events_unbound	08:09:02	0
2245591	99	66	60,4	cyclictest	2331728	-21	kworker/u4:15+events_unbound	10:14:23	1
2245589	99	66	56,7	cyclictest	2436025	-21	kworker/u4:5+xprtiod	12:15:11	0
2245589	99	64	6,54	cyclictest	0	-21	swapper/0	10:40:23	0
2245591	99	63	54,7	cyclictest	2352350	-21	systemd-tmpfile	10:35:23	1
2245591	99	63	54,6	cyclictest	2263485	-21	kworker/u4:4+events_unbound	08:59:07	1
2245589	99	59	52,5	cyclictest	2266023	-21	kworker/u4:12+events_unbound	09:04:08	0
2245591	99	58	52,4	cyclictest	2345155	-21	kworker/u4:6+events_unbound	10:49:31	1
2245591	99	57	48,6	cyclictest	2308386	-21	sshd	09:45:22	1
2245591	99	57	47,8	cyclictest	2441883	-21	systemd	12:19:48	1
2245589	99	57	47,7	cyclictest	2334746	-21	/usr/sbin/munin	10:15:24	0
2245589	99	57	38,14	cyclictest	2400072	-21	ps	11:30:36	0
2245591	99	56	49,5	cyclictest	2348952	-21	kworker/u4:9+events_unbound	10:35:00	1
2245591	99	56	49,5	cyclictest	2323482	-21	kworker/u4:1+events_unbound	10:04:21	1
2245591	99	56	48,6	cyclictest	2269899	-21	kworker/u4:18+events_unbound	09:24:10	1
2245589	99	56	48,6	cyclictest	2345155	-21	kworker/u4:6+events_unbound	10:56:59	0
2245591	99	55	48,5	cyclictest	2388338	-21	kworker/u4:4+events_unbound	12:34:51	1
2245589	99	55	36,16	cyclictest	0	-21	swapper/0	09:50:26	0
2245591	99	54	48,4	cyclictest	2336204	-21	kworker/u4:3+events_unbound	10:17:59	1
2245591	99	54	47,5	cyclictest	2414668	-21	kworker/u4:8+events_unbound	11:49:43	1
2245591	99	54	44,6	cyclictest	0	-21	swapper/1	11:55:19	1
2245589	99	54	47,5	cyclictest	2418431	-21	kworker/u4:18+events_unbound	11:52:01	0
2245589	99	54	47,5	cyclictest	2253118	-21	kworker/u4:7+events_unbound	08:01:01	0
2245589	99	53	46,5	cyclictest	2401508	-21	kworker/u4:15+events_unbound	11:48:00	0
2245589	99	53	43,8	cyclictest	2425222	-21	ssh	12:00:15	0
2245591	99	52	44,6	cyclictest	2264767	-21	kworker/u4:6+events_unbound	09:09:09	1
2245591	99	52	44,5	cyclictest	2387316	-21	timerwakeupswit	11:15:40	1
2245589	99	52	44,6	cyclictest	2392752	-21	kworker/u4:2+events_unbound	11:59:59	0
2245589	99	52	44,6	cyclictest	0	-21	swapper/0	11:15:28	0
2245589	99	52	3,26	cyclictest	2277447	-21	ssh	09:10:22	0
2245589	99	52	24,18	cyclictest	54	-21	kswapd0	12:10:11	0
2245591	99	51	45,4	cyclictest	2281660	-21	/usr/sbin/munin	09:15:23	1
2245591	99	51	39,10	cyclictest	2257031	-21	kworker/u4:2	07:55:01	1
2245591	99	51	21,14	cyclictest	2444101	-21	kworker/u4:10+events_unbound	12:39:54	1
2245589	99	51	43,6	cyclictest	2442341	-21	/usr/sbin/munin	12:20:12	0
2245591	99	50	44,4	cyclictest	2392752	-21	kworker/u4:2+events_unbound	11:40:03	1
2245591	99	50	44,4	cyclictest	2392752	-21	kworker/u4:2+events_unbound	11:40:02	1
2245591	99	50	44,4	cyclictest	2259542	-21	systemd	08:04:01	1
2245591	99	50	43,5	cyclictest	2375310	-21	kworker/u4:0+events_unbound	11:05:14	1
2245591	99	50	43,5	cyclictest	2255713	-21	dpkg	07:50:01	1
2245591	99	50	42,6	cyclictest	2292100	-21	kworker/u4:8+events_unbound	10:09:00	1
2245589	99	50	42,6	cyclictest	2192243	-21	kworker/u4:10+events_unbound	07:45:02	0
2245589	99	50	40,7	cyclictest	2308490	-21	ntpq	09:45:28	0
2245589	99	50	30,16	cyclictest	0	-21	swapper/0	11:15:01	0
2245591	99	49	42,5	cyclictest	2269133	-21	sshd	08:40:22	1
2245591	99	49	40,7	cyclictest	2443316	-21	ssh	12:20:38	1
2245591	99	49	40,7	cyclictest	2263919	-21	df_abs	08:20:15	1
2245591	99	49	40,7	cyclictest	2263919	-21	df_abs	08:20:15	1
2245589	99	49	8,22	cyclictest	2304191	-21	ssh	09:40:32	0
2245589	99	49	43,4	cyclictest	2283740	-21	kworker/u4:2+events_unbound	09:24:59	0
2245589	99	49	42,5	cyclictest	2345150	-21	kworker/u4:1+events_unbound	10:45:01	0
2245589	99	49	42,5	cyclictest	2282499	-21	sed	09:15:42	0
2245589	99	49	42,5	cyclictest	2249346	-21	kworker/u4:1+events_unbound	07:23:01	0
2245589	99	49	30,16	cyclictest	0	-21	swapper/0	10:55:01	0
2245591	99	48	43,3	cyclictest	2388338	-21	kworker/u4:4+events_unbound	12:15:00	1
2245591	99	48	42,4	cyclictest	2277901	-21	timerandwakeup	09:10:37	1
2245591	99	48	41,5	cyclictest	2394273	-21	systemd	11:24:35	1
2245591	99	48	41,5	cyclictest	2364815	-21	aten_r7power_po	10:50:17	1
2245591	99	48	41,5	cyclictest	2274404	-21	fschecks_time	09:00:20	1
2245591	99	48	37,6	cyclictest	2017898	-21	kworker/u4:9+events_unbound	08:14:02	1
2245591	99	48	37,6	cyclictest	2017898	-21	kworker/u4:9+events_unbound	08:14:02	1
2245589	99	48	40,5	cyclictest	2272536	-21	idleruntime-cro	08:55:00	0
2245589	99	48	39,7	cyclictest	2275471	-21	aten_r7power_en	09:05:21	0
2245589	99	48	38,7	cyclictest	2267315	-21	apt-get	08:35:01	0
2245591	99	47	39,5	cyclictest	2290847	-21	diskmemload	09:25:31	1
2245591	99	47	39,5	cyclictest	0	-21	swapper/1	11:30:13	1
2245591	99	47	28,6	cyclictest	2388338	-21	kworker/u4:4+events_unbound	12:05:00	1
2245591	99	47	27,14	cyclictest	0	-21	swapper/1	11:00:29	1
2245589	99	47	40,5	cyclictest	2269899	-21	kworker/u4:18+events_unbound	09:37:04	0
2245589	99	47	40,5	cyclictest	2253118	-21	kworker/u4:7+events_unbound	08:00:00	0
2245589	99	47	39,6	cyclictest	2266022	-21	kworker/u4:10+events_unbound	08:58:43	0
2245589	99	47	28,16	cyclictest	0	-21	swapper/0	09:25:23	0
2245591	99	46	39,4	cyclictest	0	-21	swapper/1	08:05:28	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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