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 Fri Nov 21, 2025 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1890986	99	129	120,6	cyclictest	1903802	-21	kworker/u4:4+events_unbound	07:59:08	1
1890986	99	124	111,5	cyclictest	1894805	-21	kworker/u4:13+events_unbound	08:59:19	1
1890986	99	120	113,5	cyclictest	2017194	-21	kworker/u4:9+events_unbound	11:30:23	1
1890986	99	119	112,5	cyclictest	1993680	-21	kworker/u4:14+events_unbound	11:25:22	1
1890986	99	119	111,6	cyclictest	1890902	-21	kworker/u4:0+events_unbound	09:14:49	1
1890986	99	115	108,5	cyclictest	1890902	-21	kworker/u4:0+events_unbound	08:44:42	1
1890986	99	114	107,5	cyclictest	2006670	-21	kworker/u4:11+events_unbound	11:14:57	1
1890986	99	111	99,5	cyclictest	1890903	-21	kworker/u4:1+events_unbound	07:18:58	1
1890986	99	110	103,5	cyclictest	1902524	-21	kworker/u4:3+events_unbound	10:29:49	1
1890986	99	106	99,5	cyclictest	1972898	-21	kworker/u4:6+events_unbound	11:04:55	1
1890986	99	104	97,5	cyclictest	1896094	-21	kworker/u4:5+events_unbound	07:39:21	1
1890986	99	104	97,5	cyclictest	1890902	-21	kworker/u4:0+events_unbound	09:34:32	1
1890986	99	104	95,7	cyclictest	1910450	-21	kworker/u4:20+events_unbound	09:04:47	1
1890986	99	103	96,5	cyclictest	1965953	-21	kworker/u4:13+events_unbound	10:20:08	1
1890986	99	101	94,5	cyclictest	1894810	-21	kworker/u4:14+events_unbound	07:34:20	1
1890986	99	101	94,5	cyclictest	1894810	-21	kworker/u4:14+events_unbound	07:34:20	1
1890986	99	100	93,5	cyclictest	1958800	-21	kworker/u4:1+events_unbound	10:30:09	1
1890986	99	99	92,5	cyclictest	1993680	-21	kworker/u4:14+events_unbound	11:09:57	1
1890986	99	99	92,5	cyclictest	1993680	-21	kworker/u4:14+events_unbound	11:09:57	1
1890986	99	98	91,5	cyclictest	1910450	-21	kworker/u4:20+events_unbound	08:24:36	1
1890986	99	98	91,5	cyclictest	1892207	-21	kworker/u4:7+events_unbound	07:13:58	1
1890986	99	98	91,5	cyclictest	1892207	-21	kworker/u4:7+events_unbound	07:13:57	1
1890986	99	94	87,5	cyclictest	2061927	-21	kworker/u4:1+events_unbound	12:30:07	1
1890986	99	94	80,6	cyclictest	1892207	-21	kworker/u4:7+events_unbound	08:04:08	1
1890985	99	94	84,8	cyclictest	53	-21	kswapd0	10:35:09	0
1890986	99	90	83,5	cyclictest	1893503	-21	kworker/u4:12+events_unbound	08:39:37	1
1890986	99	87	75,8	cyclictest	53	-21	kswapd0	11:20:21	1
1890986	99	86	79,5	cyclictest	1893503	-21	kworker/u4:12+events_unbound	08:54:18	1
1890986	99	86	78,6	cyclictest	2027839	-21	kworker/u4:2+events_unbound	11:50:27	1
1890986	99	85	78,5	cyclictest	1902524	-21	kworker/u4:3+events_unbound	08:09:10	1
1890985	99	83	77,4	cyclictest	1941226	-21	kworker/u4:6+events_unbound	09:39:32	0
1890986	99	82	71,7	cyclictest	2022946	-21	ssh	11:35:30	1
1890986	99	82	71,7	cyclictest	2022946	-21	ssh	11:35:29	1
1890985	99	82	73,6	cyclictest	1931253	-21	kworker/u4:8+events_unbound	09:24:24	0
1890986	99	81	74,5	cyclictest	1906569	-21	kworker/u4:16+events_unbound	08:49:42	1
1890985	99	81	73,5	cyclictest	1951565	-21	kworker/u4:16+events_unbound	09:54:37	0
1890986	99	80	73,5	cyclictest	1890904	-21	kworker/u4:2+events_unbound	07:29:02	1
1890986	99	80	71,7	cyclictest	1903807	-21	kworker/u4:9+events_unbound	08:14:27	1
1890985	99	76	72,3	cyclictest	1944779	-21	kworker/u4:11+events_unbound	09:44:33	0
1890986	99	75	68,5	cyclictest	1965952	-21	kworker/u4:12+events_unbound	10:39:51	1
1890986	99	75	68,5	cyclictest	1965952	-21	kworker/u4:12+events_unbound	10:39:51	1
1890985	99	75	66,6	cyclictest	1894810	-21	kworker/u4:14+events_unbound	07:29:18	0
1890986	99	74	66,6	cyclictest	2042741	-21	kworker/u4:10+events_unbound	12:05:05	1
1890986	99	74	66,6	cyclictest	2042741	-21	kworker/u4:10+events_unbound	12:05:05	1
1890985	99	74	69,3	cyclictest	1958800	-21	kworker/u4:1+events_unbound	10:10:04	0
1890985	99	74	65,7	cyclictest	1893488	-21	kworker/u4:11+events_unbound	07:49:24	0
1890986	99	73	66,5	cyclictest	1898655	-21	kworker/u4:15+events_unbound	08:19:13	1
1890986	99	69	63,4	cyclictest	1944779	-21	kworker/u4:11+events_unbound	10:05:03	1
1890986	99	68	59,6	cyclictest	2024128	-21	kworker/u4:4+events_unbound	11:45:00	1
1890986	99	67	56,8	cyclictest	1903802	-21	kworker/u4:4+events_unbound	09:49:57	1
1890985	99	67	62,3	cyclictest	2027837	-21	kworker/u4:0+events_unbound	12:15:07	0
1890986	99	66	60,4	cyclictest	1972409	-21	kworker/u4:2+events_unbound	10:44:53	1
1890986	99	66	59,5	cyclictest	1911731	-21	kworker/u4:21+events_unbound	08:30:01	1
1890985	99	66	59,5	cyclictest	1972409	-21	kworker/u4:2+events_unbound	10:54:54	0
1890985	99	66	59,5	cyclictest	1893503	-21	kworker/u4:12+events_unbound	09:19:24	0
1890985	99	66	57,6	cyclictest	1962445	-21	kworker/u4:7+events_unbound	10:09:44	0
1890985	99	66	57,6	cyclictest	1909142	-21	kworker/u4:18+events_unbound	08:29:14	0
1890986	99	65	5,56	cyclictest	1957632	-21	ssh	10:00:28	1
1890985	99	65	57,6	cyclictest	1906569	-21	kworker/u4:16+events_unbound	09:14:22	0
1890985	99	65	55,7	cyclictest	1969535	-21	kworker/u4:0+events_unbound	10:19:47	0
1890986	99	62	55,5	cyclictest	1941226	-21	kworker/u4:6+events_unbound	09:39:54	1
1890986	99	61	53,6	cyclictest	1941224	-21	kworker/u4:5+events_unbound	09:55:03	1
1890985	99	61	52,6	cyclictest	2068018	-21	ssh	12:35:08	0
1890985	99	61	27,15	cyclictest	14	-21	ksoftirqd/0	11:50:21	0
1890985	99	60	52,5	cyclictest	1976555	-21	sh	10:27:32	0
1890986	99	58	52,5	cyclictest	1958800	-21	kworker/u4:1+events_unbound	10:50:03	1
1890986	99	57	50,5	cyclictest	2038692	-21	kworker/u4:2+events_unbound	12:25:34	1
1890985	99	57	5,27	cyclictest	1971545	-21	ntpq	10:20:28	0
1890985	99	57	46,7	cyclictest	1890982	-21	cyclictest	10:49:23	0
1890986	99	56	45,7	cyclictest	0	-21	swapper/1	12:00:14	1
1890985	99	56	51,3	cyclictest	1890904	-21	kworker/u4:2+events_unbound	07:24:18	0
1890985	99	56	48,6	cyclictest	2042741	-21	kworker/u4:10+events_unbound	12:05:01	0
1890985	99	56	16,13	cyclictest	1982287	-21	ntpq	10:35:35	0
1890985	99	56	16,13	cyclictest	1982287	-21	ntpq	10:35:35	0
1890985	99	56	13,16	cyclictest	1892957	-21	ntpq	07:15:23	0
1890986	99	55	45,8	cyclictest	1944779	-21	kworker/u4:11+events_unbound	09:44:56	1
1890986	99	55	44,7	cyclictest	1896094	-21	kworker/u4:5+events_unbound	07:50:03	1
1890985	99	55	48,4	cyclictest	1902524	-21	kworker/u4:3+events_unbound	08:09:27	0
1890985	99	55	36,17	cyclictest	1949586	-21	munin-plugin-st	09:50:00	0
1890985	99	54	47,4	cyclictest	0	-21	swapper/0	12:30:28	0
1890985	99	54	42,9	cyclictest	53	-21	kswapd0	11:15:18	0
1890985	99	54	34,17	cyclictest	1913481	-21	fschecks_count	08:35:19	0
1890986	99	53	46,5	cyclictest	2024129	-21	kworker/u4:5+events_unbound	12:20:02	1
1890986	99	53	46,5	cyclictest	1890902	-21	kworker/u4:0+events_unbound	07:45:03	1
1890986	99	53	45,6	cyclictest	1933664	-21	/usr/sbin/munin	09:25:39	1
1890986	99	53	41,10	cyclictest	2034748	-21	kworker/u4:1+events_unbound	11:55:28	1
1890985	99	53	44,7	cyclictest	2015959	-21	gltestperf	11:25:21	0
1890985	99	53	44,6	cyclictest	2060668	-21	ssh	12:25:33	0
1890985	99	53	44,6	cyclictest	1985486	-21	ssh	10:40:28	0
1890986	99	52	45,5	cyclictest	0	-21	swapper/1	10:15:12	1
1890986	99	52	44,6	cyclictest	2008745	-21	fschecks_time	11:15:19	1
1890985	99	52	42,7	cyclictest	1957868	-21	mailstats	10:00:36	0
1890985	99	52	29,20	cyclictest	2029497	-21	/usr/sbin/munin	11:45:22	0
1890985	99	52	19,10	cyclictest	1898708	-21	sendmail	07:40:00	0
1890985	99	52	18,11	cyclictest	0	-21	swapper/0	07:34:18	0
1890985	99	52	18,11	cyclictest	0	-21	swapper/0	07:34:18	0
1890985	99	52	16,7	cyclictest	1911940	-21	apt-get	08:30:13	0
1890986	99	51	44,5	cyclictest	1894819	-21	systemd	07:23:59	1
1890985	99	51	7,20	cyclictest	2048083	-21	acpi	12:10:12	0
1890985	99	51	43,5	cyclictest	2037590	-21	/usr/sbin/munin	11:55:37	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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