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 Mon Jan 05, 2026 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1829643	99	121	114,5	cyclictest	1844757	-21	kworker/u4:9+events_unbound	20:17:01	0
1829643	99	112	104,6	cyclictest	1925370	-21	kworker/u4:5+events_unbound	22:37:23	0
1829643	99	110	86,16	cyclictest	1864480	-21	ssh	21:15:09	0
1829643	99	110	102,6	cyclictest	1916902	-21	kworker/u4:4+events_unbound	22:17:20	0
1829643	99	109	102,5	cyclictest	1843501	-21	kworker/u4:5+events_unbound	20:12:01	0
1829643	99	104	97,5	cyclictest	1874930	-21	kworker/u4:1+events_unbound	21:27:11	0
1829643	99	101	75,16	cyclictest	54	-21	kswapd0	23:05:10	0
1829643	99	95	88,5	cyclictest	1837160	-21	kworker/u4:1+events_unbound	19:37:00	0
1829643	99	95	87,6	cyclictest	1858735	-21	kworker/u4:5+events_unbound	21:07:07	0
1829643	99	89	72,8	cyclictest	54	-21	kswapd0	23:25:10	0
1829643	99	88	81,5	cyclictest	1843502	-21	kworker/u4:6+events_unbound	20:27:04	0
1829645	99	81	66,9	cyclictest	1858724	-21	kworker/u4:4-rpciod	21:10:13	1
1829643	99	79	70,7	cyclictest	54	-21	kswapd0	22:10:00	0
1829643	99	79	70,7	cyclictest	54	-21	kswapd0	22:09:59	0
1829643	99	77	70,5	cyclictest	1817159	-21	kworker/u4:3+events_unbound	19:31:58	0
1829645	99	70	23,44	cyclictest	0	-21	swapper/1	21:40:16	1
1829645	99	68	63,3	cyclictest	1916903	-21	kworker/u4:6+events_unbound	22:32:21	1
1829645	99	68	35,30	cyclictest	1915793	-21	switchtime	22:15:38	1
1829643	99	67	56,8	cyclictest	1894375	-21	uname	21:50:23	0
1829645	99	66	36,27	cyclictest	0	-21	swapper/1	22:40:43	1
1829645	99	66	3,58	cyclictest	1890342	-21	ssh	21:45:28	1
1829645	99	66	2,59	cyclictest	1893809	-21	ssh	21:50:14	1
1829643	99	66	59,5	cyclictest	2000731	-21	kworker/u4:6+events_unbound	00:31:59	0
1829645	99	65	1,60	cyclictest	1978262	-21	ssh	23:30:27	1
1829643	99	65	57,6	cyclictest	1883456	-21	kworker/u4:4+events_unbound	21:45:43	0
1829643	99	65	51,9	cyclictest	2023240	-21	wc	00:25:02	0
1829645	99	64	3,57	cyclictest	2010932	-21	ssh	00:10:12	1
1829645	99	64	33,28	cyclictest	1990482	-21	fschecks_count	23:45:24	1
1829645	99	64	29,31	cyclictest	0	-21	swapper/1	00:05:36	1
1829643	99	64	56,6	cyclictest	1992271	-21	kworker/u4:9+events_unbound	00:19:43	0
1829645	99	63	41,20	cyclictest	2027345	-21	latency_hist	00:30:00	1
1829645	99	63	3,49	cyclictest	1940534	-21	ntpq	22:45:30	1
1829645	99	63	32,29	cyclictest	0	-21	swapper/1	23:00:13	1
1829645	99	63	27,32	cyclictest	0	-21	swapper/1	23:10:31	1
1829645	99	62	31,28	cyclictest	0	-21	swapper/1	22:20:22	1
1829645	99	62	26,32	cyclictest	1986361	-21	head	23:40:22	1
1829645	99	62	2,54	cyclictest	1897882	-21	apt-get	21:55:16	1
1829643	99	62	37,20	cyclictest	54	-21	kswapd0	00:35:09	0
1829645	99	61	35,23	cyclictest	0	-21	swapper/1	00:30:34	1
1829645	99	61	27,27	cyclictest	0	-21	swapper/1	23:55:32	1
1829645	99	61	2,54	cyclictest	1966416	-21	ssh	23:15:55	1
1829643	99	61	30,23	cyclictest	255	50	irq/23-42890000.ethernet	20:45:08	0
1829645	99	60	3,53	cyclictest	2015968	-21	ssh	00:15:39	1
1829645	99	60	30,27	cyclictest	2006519	-21	ls	00:05:01	1
1829645	99	60	2,55	cyclictest	0	-21	swapper/1	20:40:14	1
1829645	99	60	15,24	cyclictest	1860025	-21	diskmemload	23:06:54	1
1829645	99	60	13,28	cyclictest	0	-21	swapper/1	23:51:17	1
1829643	99	60	52,6	cyclictest	1883456	-21	kworker/u4:4+events_unbound	21:37:14	0
1829645	99	59	48,8	cyclictest	1923237	-21	/usr/sbin/munin	22:25:18	1
1829645	99	59	41,15	cyclictest	1973419	-21	sh	23:25:17	1
1829645	99	59	2,53	cyclictest	1868730	-21	ssh	21:20:14	1
1829645	99	59	2,52	cyclictest	2032563	-21	ssh	00:35:38	1
1829645	99	59	24,33	cyclictest	1829640	-21	cyclictest	23:20:09	1
1829645	99	58	49,6	cyclictest	1831777	-21	sendmail_mailqu	19:15:36	1
1829645	99	58	31,25	cyclictest	1931998	-21	kernelversion	22:35:24	1
1829645	99	58	28,27	cyclictest	0	-21	swapper/1	23:40:00	1
1829645	99	58	25,27	cyclictest	0	-21	swapper/1	20:15:30	1
1829645	99	58	2,50	cyclictest	1911246	-21	ssh	22:10:28	1
1829645	99	58	23,32	cyclictest	0	-21	swapper/1	00:20:26	1
1829645	99	58	1,53	cyclictest	1877068	-21	ssh	21:30:12	1
1829645	99	58	1,52	cyclictest	1834140	-21	grep	19:25:28	1
1829645	99	58	1,51	cyclictest	1865440	-21	ps	21:15:42	1
1829645	99	58	13,30	cyclictest	1860025	-21	diskmemload	22:56:15	1
1829645	99	57	9,25	cyclictest	1945938	-21	ssh	22:51:49	1
1829645	99	57	4,49	cyclictest	1837950	-21	ntpq	19:40:28	1
1829645	99	57	2,51	cyclictest	1872883	-21	apt-get	21:25:13	1
1829645	99	57	2,51	cyclictest	1850003	-21	apt-get	20:30:16	1
1829645	99	57	18,36	cyclictest	1903361	-21	sed	22:00:39	1
1829645	99	57	1,52	cyclictest	1836708	-21	ntpq	19:35:30	1
1829645	99	56	48,5	cyclictest	0	-21	swapper/1	20:45:10	1
1829645	99	56	2,50	cyclictest	1907650	-21	ssh	22:05:40	1
1829645	99	56	2,50	cyclictest	1907650	-21	ssh	22:05:40	1
1829645	99	56	2,50	cyclictest	1845545	-21	ntpq	20:10:31	1
1829645	99	56	21,31	cyclictest	0	-21	swapper/1	21:35:32	1
1829645	99	56	1,52	cyclictest	1851818	-21	ntpq	20:35:26	1
1829645	99	56	1,51	cyclictest	1858275	-21	ntpq	21:00:31	1
1829645	99	55	4,44	cyclictest	1848099	-21	awk	20:20:30	1
1829645	99	55	23,29	cyclictest	1840839	-21	unixbench-2d	19:50:42	1
1829645	99	55	1,51	cyclictest	1859558	-21	ntpq	21:05:36	1
1829645	99	55	1,31	cyclictest	1068	-21	snmpd	19:21:45	1
1829645	99	54	3,47	cyclictest	1830394	-21	ntpq	19:10:28	1
1829645	99	54	1,2	cyclictest	0	-21	swapper/1	20:00:13	1
1829643	99	54	46,6	cyclictest	2025491	-21	kworker/u4:11+events_unbound	00:29:00	0
1829643	99	54	45,7	cyclictest	388	-21	dbus-daemon	22:47:24	0
1829643	99	54	31,20	cyclictest	1969249	-21	aten2__	23:20:17	0
1829645	99	53	2,47	cyclictest	1849300	-21	ntpq	20:25:26	1
1829645	99	53	2,46	cyclictest	0	-21	swapper/1	19:45:09	1
1829645	99	53	1,49	cyclictest	1844304	-21	ntpq	20:05:29	1
1829643	99	53	46,5	cyclictest	1981835	-21	/usr/sbin/munin	23:35:21	0
1829643	99	53	46,5	cyclictest	1908364	-21	kworker/u4:1+events_unbound	22:22:59	0
1829643	99	53	46,5	cyclictest	1434426	-21	kworker/u4:12+events_unbound	19:15:44	0
1829643	99	53	45,6	cyclictest	1996493	-21	kworker/u4:1+events_unbound	23:54:59	0
1829645	99	52	38,8	cyclictest	0	-21	swapper/1	19:55:29	1
1829645	99	52	1,48	cyclictest	1857030	-21	ntpq	20:55:32	1
1829645	99	52	1,11	cyclictest	1855692	-21	ld	20:50:26	1
1829643	99	52	46,5	cyclictest	1925370	-21	kworker/u4:5+events_unbound	22:59:59	0
1829643	99	52	44,6	cyclictest	1975905	-21	kworker/u4:12+events_unbound	23:45:59	0
1829643	99	52	44,6	cyclictest	1921134	-21	kworker/u4:0+events_unbound	22:44:00	0
1829643	99	52	44,6	cyclictest	1869607	-21	/usr/sbin/munin	21:20:36	0
1829643	99	52	25,22	cyclictest	1925373	-21	kworker/u4:10+rpciod	22:30:28	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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