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 Dec 14, 2025 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2057062	99	209	169,28	cyclictest	53	-21	kswapd0	09:50:06	0
2057063	99	109	76,31	cyclictest	53	-21	kswapd0	10:25:12	1
2057062	99	107	82,22	cyclictest	53	-21	kswapd0	10:05:12	0
2057063	99	103	91,9	cyclictest	53	-21	kswapd0	10:30:12	1
2057062	99	99	88,7	cyclictest	2199138	-21	kworker/u4:10+events_unbound	11:30:24	0
2057062	99	98	86,9	cyclictest	53	-21	kswapd0	12:30:31	0
2057062	99	97	90,5	cyclictest	2066059	-21	kworker/u4:1+events_unbound	07:45:11	0
2057062	99	96	74,6	cyclictest	2155342	-21	kworker/u4:11+events_unbound	11:00:19	0
2057062	99	95	87,6	cyclictest	2112152	-21	kworker/u4:3+events_unbound	09:40:05	0
2057063	99	93	85,6	cyclictest	2199138	-21	kworker/u4:10+events_unbound	11:25:21	1
2057062	99	93	84,7	cyclictest	53	-21	kswapd0	12:00:13	0
2057062	99	92	86,4	cyclictest	2229193	-21	kworker/u4:2+events_unbound	12:10:31	0
2057062	99	90	79,8	cyclictest	2216048	-21	kworker/u4:12+events_unbound	11:50:26	0
2057062	99	89	77,8	cyclictest	53	-21	kswapd0	10:20:13	0
2057062	99	88	79,6	cyclictest	2159808	-21	kworker/u4:13+events_unbound	10:40:15	0
2057062	99	86	74,10	cyclictest	53	-21	kswapd0	11:15:05	0
2057063	99	85	78,5	cyclictest	2250365	-21	kworker/u4:8+events_unbound	12:20:15	1
2057062	99	85	73,9	cyclictest	53	-21	kswapd0	10:45:18	0
2057063	99	82	57,23	cyclictest	53	-21	kswapd0	10:20:00	1
2057062	99	81	69,10	cyclictest	2066058	-21	kworker/u4:0+events_unbound	08:04:42	0
2057062	99	80	67,10	cyclictest	2245987	-21	kworker/u4:0+events_unbound	12:25:34	0
2057062	99	78	72,4	cyclictest	2087851	-21	kworker/u4:2+events_unbound	09:25:14	0
2057063	99	75	40,33	cyclictest	2166175	-21	aten_r7power_en	10:40:14	1
2057062	99	74	66,6	cyclictest	2107745	-21	kworker/u4:1+events_unbound	09:35:13	0
2057063	99	73	67,3	cyclictest	2094548	-21	kworker/u4:0+events_unbound	09:20:12	1
2057063	99	72	35,8	cyclictest	0	-21	swapper/1	11:25:00	1
2057063	99	71	59,8	cyclictest	53	-21	kswapd0	10:35:16	1
2057062	99	71	63,6	cyclictest	2085287	-21	kworker/u4:12+events_unbound	09:04:56	0
2057062	99	71	62,7	cyclictest	2137723	-21	kworker/u4:8+events_unbound	10:10:12	0
2057062	99	70	54,10	cyclictest	53	-21	kswapd0	10:15:16	0
2057063	99	69	2,31	cyclictest	2122839	-21	ssh	09:50:06	1
2057062	99	69	62,5	cyclictest	2058285	-21	kworker/u4:9+events_unbound	08:24:48	0
2057062	99	69	60,7	cyclictest	2112152	-21	kworker/u4:3+events_unbound	09:45:14	0
2057063	99	68	34,9	cyclictest	2068528	-21	timerwakeupswit	07:50:37	1
2057063	99	67	59,6	cyclictest	53	-21	kswapd0	11:10:19	1
2057063	99	67	59,6	cyclictest	53	-21	kswapd0	11:10:19	1
2057063	99	67	59,6	cyclictest	2087853	-21	kworker/u4:9+events_unbound	09:19:59	1
2057063	99	67	34,5	cyclictest	2185861	-21	kworker/u4:2-rpciod	11:15:20	1
2057063	99	66	50,6	cyclictest	2233541	-21	kworker/u4:5+events_unbound	12:05:31	1
2057062	99	65	56,6	cyclictest	2185861	-21	kworker/u4:2+events_unbound	11:20:20	0
2057062	99	65	46,6	cyclictest	2078908	-21	kworker/u4:6+events_unbound	09:30:04	0
2057062	99	64	57,5	cyclictest	2055791	-21	kworker/u4:0+events_unbound	07:29:38	0
2057062	99	64	50,7	cyclictest	2092514	-21	apt-get	09:15:12	0
2057062	99	63	57,5	cyclictest	2058284	-21	kworker/u4:8+events_unbound	07:20:01	0
2057062	99	63	55,6	cyclictest	2150225	-21	kworker/u4:5+events_unbound	10:35:16	0
2057062	99	63	55,6	cyclictest	2082749	-21	kworker/u4:18+events_unbound	08:54:54	0
2057063	99	62	54,5	cyclictest	2181365	-21	kworker/u4:0+events_unbound	11:05:20	1
2057063	99	62	54,5	cyclictest	2181365	-21	kworker/u4:0+events_unbound	11:05:19	1
2057063	99	62	53,6	cyclictest	2107745	-21	kworker/u4:1+events_unbound	09:45:02	1
2057063	99	62	49,10	cyclictest	0	-21	swapper/1	10:00:30	1
2057063	99	61	50,8	cyclictest	53	-21	kswapd0	09:40:14	1
2057063	99	61	47,9	cyclictest	2224822	-21	kworker/u4:6-rpciod	12:36:34	1
2057062	99	61	50,8	cyclictest	2176920	-21	kworker/u4:4+events_unbound	10:55:15	0
2057062	99	60	45,7	cyclictest	2199138	-21	kworker/u4:10+events_unbound	11:25:36	0
2057063	99	59	51,6	cyclictest	2180075	-21	gcc	10:55:36	1
2057063	99	59	48,9	cyclictest	53	-21	kswapd0	07:15:09	1
2057062	99	58	30,16	cyclictest	2217987	-21	modprobe	11:40:00	0
2057063	99	57	51,3	cyclictest	2229193	-21	kworker/u4:2+events_unbound	12:15:32	1
2057062	99	57	50,5	cyclictest	2155341	-21	kworker/u4:10+events_unbound	10:30:03	0
2057062	99	57	47,8	cyclictest	53	-21	kswapd0	11:40:34	0
2057063	99	56	48,6	cyclictest	53	-21	kswapd0	11:45:33	1
2057063	99	55	48,5	cyclictest	2142039	-21	kworker/u4:4+events_unbound	10:20:13	1
2057063	99	55	48,5	cyclictest	2058285	-21	kworker/u4:9+events_unbound	08:35:00	1
2057063	99	55	47,5	cyclictest	2257093	-21	/usr/sbin/munin	12:25:17	1
2057062	99	55	48,5	cyclictest	2056992	-21	kworker/u4:4+events_unbound	07:14:32	0
2057062	99	55	46,6	cyclictest	0	-21	swapper/0	12:15:13	0
2057063	99	54	46,6	cyclictest	53	-21	kswapd0	10:50:16	1
2057063	99	54	45,7	cyclictest	2199138	-21	kworker/u4:10+events_unbound	11:40:46	1
2057063	99	53	46,5	cyclictest	2064315	-21	ntp_offset	07:35:31	1
2057062	99	53	34,17	cyclictest	2193173	-21	ldconfig	11:10:34	0
2057062	99	53	34,17	cyclictest	2193173	-21	ldconfig	11:10:33	0
2057063	99	52	44,5	cyclictest	2082749	-21	kworker/u4:18+events_unbound	08:50:01	1
2057062	99	52	45,5	cyclictest	2266283	-21	ntpq	12:35:35	0
2057062	99	52	44,6	cyclictest	2058285	-21	kworker/u4:9+events_unbound	08:35:03	0
2057062	99	52	42,8	cyclictest	2164240	-21	kworker/u4:14+events_unbound	10:50:38	0
2057062	99	52	42,7	cyclictest	2058282	-21	kworker/u4:6-rpciod	08:15:16	0
2057063	99	51	41,8	cyclictest	2183889	-21	diskmemload	11:00:17	1
2057062	99	51	44,5	cyclictest	2127900	-21	ld	09:55:30	0
2057062	99	51	44,5	cyclictest	2058285	-21	kworker/u4:9+events_unbound	07:34:38	0
2057062	99	51	27,20	cyclictest	2153396	-21	head	10:25:20	0
2057063	99	50	40,7	cyclictest	2233539	-21	kworker/u4:3-xprtiod	12:00:12	1
2057062	99	50	9,35	cyclictest	2188662	-21	ssh	11:05:25	0
2057062	99	50	9,35	cyclictest	2188662	-21	ssh	11:05:25	0
2057062	99	50	4,41	cyclictest	0	-21	swapper/0	08:30:34	0
2057062	99	50	32,16	cyclictest	2064801	-21	apt	07:40:00	0
2057063	99	49	40,7	cyclictest	0	-21	swapper/1	09:55:37	1
2057062	99	49	42,5	cyclictest	2222988	-21	sort	11:45:19	0
2057062	99	49	42,5	cyclictest	2216047	-21	kworker/u4:9+events_unbound	12:21:59	0
2057062	99	49	37,9	cyclictest	2065379	-21	gltestperf	07:40:20	0
2057063	99	48	41,5	cyclictest	2141458	-21	ssh	10:11:01	1
2057063	99	48	36,10	cyclictest	2105257	-21	sshd	09:30:01	1
2057062	99	48	41,5	cyclictest	2131533	-21	aten_r7power_po	10:00:17	0
2057062	99	48	38,7	cyclictest	2073872	-21	latency_hist	08:15:01	0
2057063	99	47	42,2	cyclictest	2078908	-21	kworker/u4:6+events_unbound	09:30:35	1
2057063	99	47	40,5	cyclictest	2080744	-21	fschecks_time	08:40:20	1
2057063	99	47	39,6	cyclictest	2069226	-21	fschecks_time	07:55:18	1
2057063	99	47	38,7	cyclictest	2261314	-21	aten_r7power_po	12:30:15	1
2057063	99	47	38,6	cyclictest	53	-21	kswapd0	09:35:15	1
2057063	99	47	36,9	cyclictest	2231389	-21	aten_r7power_vo	11:55:15	1
2057062	99	47	37,6	cyclictest	0	-21	swapper/0	11:55:36	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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