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 Wed Jun 24, 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
2090905	99	137	109,22	cyclictest	53	-21	kswapd0	10:40:07	0
2090906	99	105	98,5	cyclictest	2208143	-21	kworker/u4:4+events_unbound	11:13:28	1
2090906	99	103	85,7	cyclictest	2078015	-21	kworker/u4:9+events_unbound	07:10:00	1
2090905	99	101	93,6	cyclictest	2270025	-21	kworker/u4:13+events_unbound	11:58:42	0
2090906	99	99	92,5	cyclictest	2282777	-21	kworker/u4:12+events_unbound	12:13:45	1
2090906	99	97	90,5	cyclictest	2243265	-21	kworker/u4:16+events_unbound	11:28:35	1
2090905	99	95	88,5	cyclictest	19	1	rcuc/0	11:48:40	0
2090906	99	93	84,7	cyclictest	2261107	-21	kworker/u4:4+events_unbound	11:53:41	1
2090906	99	91	83,6	cyclictest	2168428	-21	kworker/u4:10+events_unbound	10:08:14	1
2090905	99	91	72,16	cyclictest	2270021	-21	kworker/u4:9+events_unbound	12:20:00	0
2090906	99	87	79,5	cyclictest	1868711	-21	kworker/u4:1+events_unbound	07:32:45	1
2090906	99	86	79,5	cyclictest	2102432	-21	kworker/u4:18+events_unbound	08:43:01	1
2090906	99	85	79,4	cyclictest	2099893	-21	kworker/u4:15+events_unbound	08:05:01	1
2090906	99	83	75,6	cyclictest	2108891	-21	kworker/u4:1+events_unbound	08:32:56	1
2090906	99	81	73,6	cyclictest	2078015	-21	kworker/u4:9+events_unbound	07:52:48	1
2090905	99	81	74,5	cyclictest	2256643	-21	kworker/u4:7+events_unbound	11:43:38	0
2090906	99	80	72,6	cyclictest	2124950	-21	kworker/u4:3+events_unbound	09:13:05	1
2090905	99	80	73,5	cyclictest	2278949	-21	kworker/u4:5+events_unbound	12:08:44	0
2090905	99	80	68,8	cyclictest	2122302	-21	find	09:10:12	0
2090905	99	80	53,9	cyclictest	2124949	-21	kworker/u4:1+events_unbound	09:20:02	0
2090906	99	78	71,5	cyclictest	2217095	-21	kworker/u4:11+events_unbound	11:20:00	1
2090905	99	78	67,9	cyclictest	2212635	-21	kworker/u4:7+events_unbound	10:55:01	0
2090906	99	77	70,5	cyclictest	2239448	-21	kworker/u4:15+events_unbound	11:33:36	1
2090906	99	77	69,6	cyclictest	2217092	-21	kworker/u4:8+events_unbound	10:58:25	1
2090905	99	77	71,3	cyclictest	2155636	-21	kworker/u4:19+events_unbound	09:48:13	0
2090906	99	76	68,6	cyclictest	2270020	-21	kworker/u4:7+events_unbound	12:00:03	1
2090906	99	75	61,6	cyclictest	2098593	-21	kworker/u4:6+events_unbound	07:57:49	1
2090906	99	75	61,6	cyclictest	2098593	-21	kworker/u4:6+events_unbound	07:57:49	1
2090906	99	74	67,5	cyclictest	2142194	-21	kworker/u4:0+events_unbound	09:38:11	1
2090905	99	73	66,5	cyclictest	2305153	-21	kworker/u4:10+events_unbound	12:38:48	0
2090906	99	69	54,5	cyclictest	2079285	-21	kworker/u4:12+events_unbound	09:08:05	1
2090906	99	67	58,6	cyclictest	2119598	-21	apt-get	09:00:12	1
2090906	99	67	55,8	cyclictest	53	-21	kswapd0	11:45:01	1
2090906	99	66	58,6	cyclictest	2190849	-21	kworker/u4:0+events_unbound	10:40:03	1
2090906	99	65	58,5	cyclictest	2119285	-21	kworker/u4:5+events_unbound	08:58:03	1
2090906	99	64	57,5	cyclictest	1868711	-21	kworker/u4:1+events_unbound	07:35:02	1
2090905	99	63	55,6	cyclictest	2142194	-21	kworker/u4:0+events_unbound	09:33:10	0
2090905	99	63	47,10	cyclictest	2242170	-21	gcc	11:25:34	0
2090906	99	62	53,5	cyclictest	0	-21	swapper/1	11:55:26	1
2090905	99	62	54,6	cyclictest	2208143	-21	kworker/u4:4+events_unbound	11:03:25	0
2090906	99	61	54,5	cyclictest	2098598	-21	kworker/u4:10+events_unbound	07:42:48	1
2090906	99	59	52,5	cyclictest	2177394	-21	kworker/u4:3+events_unbound	10:17:02	1
2090906	99	59	47,7	cyclictest	2172917	-21	kworker/u4:4+events_unbound	10:10:03	1
2090906	99	59	43,9	cyclictest	0	-21	swapper/1	12:35:25	1
2090905	99	59	51,5	cyclictest	2190849	-21	kworker/u4:0+events_unbound	10:40:01	0
2090905	99	59	44,7	cyclictest	0	-21	swapper/0	08:50:01	0
2090906	99	58	44,11	cyclictest	2260091	-21	unixbench_multi	11:45:39	1
2090906	99	57	7,44	cyclictest	2193729	-21	ssh	10:30:34	1
2090906	99	57	7,44	cyclictest	2193729	-21	ssh	10:30:34	1
2090906	99	57	50,5	cyclictest	2093392	-21	kworker/u4:0+events_unbound	08:12:53	1
2090906	99	57	49,5	cyclictest	2291718	-21	kworker/u4:2+events_unbound	12:26:00	1
2090905	99	57	48,7	cyclictest	2090904	-21	cyclictest	12:02:15	0
2090905	99	57	42,6	cyclictest	2078015	-21	kworker/u4:9+events_unbound	07:40:00	0
2090906	99	56	47,7	cyclictest	2199159	-21	kworker/u4:13+events_unbound	10:37:00	1
2090906	99	56	45,7	cyclictest	2155636	-21	kworker/u4:19+events_unbound	09:51:07	1
2090906	99	56	45,7	cyclictest	2155636	-21	kworker/u4:19+events_unbound	09:51:07	1
2090906	99	56	45,5	cyclictest	2155635	-21	kworker/u4:18+events_unbound	09:55:02	1
2090906	99	56	45,5	cyclictest	2155635	-21	kworker/u4:18+events_unbound	09:55:02	1
2090906	99	56	38,6	cyclictest	2128748	-21	kworker/u4:10+events_unbound	09:19:45	1
2090906	99	55	48,5	cyclictest	2146626	-21	kworker/u4:1+events_unbound	09:43:00	1
2090906	99	55	44,7	cyclictest	2189645	-21	timerwakeupswit	10:25:39	1
2090905	99	55	47,6	cyclictest	2116661	-21	kworker/u4:2+events_unbound	08:53:02	0
2090905	99	55	46,6	cyclictest	37	-21	kcompactd0	10:30:54	0
2090905	99	55	46,6	cyclictest	37	-21	kcompactd0	10:30:54	0
2090905	99	55	44,8	cyclictest	2263288	-21	aten_r7power_en	11:50:13	0
2090905	99	55	44,4	cyclictest	2146626	-21	kworker/u4:1+events_unbound	09:43:12	0
2090905	99	55	36,16	cyclictest	2093447	-21	sh	07:20:00	0
2090905	99	55	35,6	cyclictest	2291718	-21	kworker/u4:2+events_unbound	12:23:45	0
2090906	99	54	7,9	cyclictest	17	1	rcu_preempt	12:15:34	1
2090906	99	54	47,5	cyclictest	2108891	-21	kworker/u4:1+events_unbound	08:17:00	1
2090906	99	54	46,6	cyclictest	2120678	-21	kworker/u4:6+events_unbound	09:29:45	1
2090906	99	54	42,8	cyclictest	2118039	-21	modprobe	08:55:01	1
2090906	99	54	40,8	cyclictest	0	-21	swapper/1	12:20:25	1
2090906	99	54	38,6	cyclictest	2119285	-21	kworker/u4:5+events_unbound	09:21:00	1
2090905	99	54	46,6	cyclictest	2079285	-21	kworker/u4:12+events_unbound	08:00:00	0
2090905	99	54	46,6	cyclictest	2079285	-21	kworker/u4:12+events_unbound	08:00:00	0
2090905	99	54	39,13	cyclictest	2229437	-21	uptime	11:10:40	0
2090906	99	53	46,5	cyclictest	2270021	-21	kworker/u4:9+events_unbound	12:06:59	1
2090906	99	53	44,6	cyclictest	2208144	-21	kworker/u4:6+events_unbound	10:50:15	1
2090906	99	53	43,6	cyclictest	2230507	-21	kworker/u4:1+events_unbound	11:39:00	1
2090906	99	53	41,6	cyclictest	2208143	-21	kworker/u4:4+events_unbound	11:03:45	1
2090905	99	53	46,5	cyclictest	2155635	-21	kworker/u4:18+events_unbound	09:53:12	0
2090905	99	53	46,5	cyclictest	2155635	-21	kworker/u4:18+events_unbound	09:53:12	0
2090905	99	53	45,6	cyclictest	2180574	-21	/usr/sbin/munin	10:15:36	0
2090905	99	53	44,6	cyclictest	2136718	-21	unixbench-2d	09:25:37	0
2090906	99	52	45,5	cyclictest	2208142	-21	kworker/u4:2+events_unbound	10:48:22	1
2090906	99	52	45,5	cyclictest	2101161	-21	kworker/u4:16+events_unbound	08:26:01	1
2090906	99	52	35,7	cyclictest	2270021	-21	kworker/u4:9+events_unbound	12:30:39	1
2090905	99	52	5,34	cyclictest	2207030	-21	ssh	10:45:36	0
2090905	99	52	41,7	cyclictest	2163457	-21	ssh	09:55:54	0
2090905	99	52	41,7	cyclictest	2163457	-21	ssh	09:55:53	0
2090905	99	51	42,6	cyclictest	0	-21	swapper/0	10:25:11	0
2090905	99	51	40,6	cyclictest	0	-21	swapper/0	10:06:42	0
2090906	99	50	43,5	cyclictest	2240061	-21	sshd	11:23:33	1
2090906	99	50	35,6	cyclictest	2095967	-21	kworker/u4:13+events_unbound	07:47:02	1
2090905	99	50	42,6	cyclictest	2226047	-21	kworker/u4:7+events_unbound	11:08:27	0
2090905	99	50	40,7	cyclictest	2111382	-21	timerwakeupswit	08:25:41	0
2090905	99	49	43,4	cyclictest	15	1	ktimers/0	09:01:45	0
2090905	99	49	43,4	cyclictest	0	-21	swapper/0	11:15:30	0
2090905	99	49	41,6	cyclictest	2144592	-21	/usr/sbin/munin	09:35:21	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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