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 Tue Jan 20, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1751038	99	112	103,7	cyclictest	1771200	-21	kworker/u4:14+events_unbound	21:27:57	0
1751038	99	106	95,8	cyclictest	1840026	-21	kworker/u4:8+events_unbound	23:03:19	0
1751041	99	93	86,5	cyclictest	1809923	-21	kworker/u4:0+events_unbound	21:58:02	1
1751041	99	93	80,5	cyclictest	1769939	-21	kworker/u4:11+events_unbound	20:32:43	1
1751041	99	88	80,6	cyclictest	1887558	-21	kworker/u4:7+events_unbound	23:38:31	1
1751038	99	87	78,6	cyclictest	1801153	-21	kworker/u4:0+events_unbound	21:32:57	0
1751041	99	85	77,5	cyclictest	1764886	-21	kworker/u4:1+events_unbound	20:02:33	1
1751041	99	83	75,6	cyclictest	1959704	-21	kworker/u4:8+events_unbound	00:38:42	1
1751041	99	83	75,6	cyclictest	1778846	-21	kworker/u4:2+events_unbound	20:57:47	1
1751041	99	83	67,6	cyclictest	1946845	-21	kworker/u4:15+events_unbound	00:23:39	1
1751041	99	82	74,6	cyclictest	1766139	-21	kworker/u4:7+events_unbound	20:12:37	1
1751038	99	82	74,6	cyclictest	1771200	-21	kworker/u4:14+events_unbound	20:52:46	0
1751038	99	81	66,6	cyclictest	1930291	-21	kworker/u4:10+events_unbound	00:03:34	0
1751041	99	79	72,5	cyclictest	1759836	-21	kworker/u4:8+events_unbound	19:57:32	1
1751038	99	76	63,11	cyclictest	1848835	-21	kworker/u4:10+events_unbound	22:28:10	0
1751041	99	73	65,5	cyclictest	1759836	-21	kworker/u4:8+events_unbound	21:10:02	1
1751041	99	72	57,6	cyclictest	1752243	-21	kworker/u4:3+events_unbound	19:22:26	1
1751038	99	72	65,5	cyclictest	1792402	-21	kworker/u4:0+events_unbound	21:22:53	0
1751038	99	72	64,6	cyclictest	1759836	-21	kworker/u4:8+events_unbound	19:50:01	0
1751038	99	72	60,6	cyclictest	1831231	-21	kworker/u4:13+events_unbound	22:08:04	0
1751038	99	72	60,6	cyclictest	1831231	-21	kworker/u4:13+events_unbound	22:08:04	0
1751041	99	70	49,13	cyclictest	1831231	-21	kworker/u4:13+events_unbound	22:08:01	1
1751041	99	70	49,13	cyclictest	1831231	-21	kworker/u4:13+events_unbound	22:08:00	1
1751041	99	67	60,5	cyclictest	1769939	-21	kworker/u4:11+events_unbound	20:42:43	1
1751041	99	67	59,6	cyclictest	1784203	-21	kworker/u4:6+events_unbound	21:17:53	1
1751041	99	67	45,5	cyclictest	1796781	-21	kworker/u4:11+events_unbound	21:28:42	1
1751038	99	67	58,7	cyclictest	388	-21	dbus-daemon	22:03:03	0
1751038	99	67	57,7	cyclictest	54	-21	kswapd0	22:25:00	0
1751041	99	66	58,6	cyclictest	1766138	-21	kworker/u4:6+events_unbound	20:17:38	1
1751041	99	65	57,6	cyclictest	1756055	-21	kworker/u4:6+events_unbound	19:52:32	1
1751041	99	65	48,8	cyclictest	1840023	-21	kworker/u4:3+events_unbound	22:17:00	1
1751041	99	64	46,6	cyclictest	1856962	-21	kworker/u4:12+events_unbound	22:40:01	1
1751038	99	64	51,4	cyclictest	1955400	-21	kworker/u4:2+events_unbound	00:33:42	0
1751041	99	63	55,6	cyclictest	1769944	-21	kworker/u4:13+events_unbound	21:02:49	1
1751041	99	63	47,7	cyclictest	1814324	-21	kworker/u4:1+events_unbound	21:55:01	1
1751041	99	62	54,6	cyclictest	1753498	-21	kworker/u4:7+events_unbound	19:17:26	1
1751041	99	62	44,6	cyclictest	1925945	-21	kworker/u4:2+events_unbound	00:10:04	1
1751041	99	62	41,7	cyclictest	1862007	-21	kworker/u4:2+events_unbound	23:18:13	1
1751041	99	62	39,7	cyclictest	1938860	-21	kworker/u4:6+events_unbound	00:16:43	1
1751041	99	61	54,4	cyclictest	0	-21	swapper/1	23:55:12	1
1751038	99	61	54,5	cyclictest	1917353	-21	kworker/u4:4+events_unbound	23:47:44	0
1751038	99	61	54,5	cyclictest	1848831	-21	kworker/u4:3+events_unbound	22:35:23	0
1751038	99	61	53,6	cyclictest	1930291	-21	kworker/u4:10+events_unbound	00:10:00	0
1751038	99	60	53,5	cyclictest	1853223	-21	kworker/u4:11+events_unbound	22:53:16	0
1751038	99	60	52,6	cyclictest	1840021	-21	kworker/u4:0+events_unbound	22:18:07	0
1751041	99	59	50,6	cyclictest	1917358	-21	kworker/u4:10+events_unbound	23:48:32	1
1751038	99	59	51,6	cyclictest	1835608	-21	kworker/u4:1+events_unbound	22:58:17	0
1751038	99	58	51,5	cyclictest	1796782	-21	kworker/u4:12+events_unbound	21:37:56	0
1751038	99	58	49,7	cyclictest	1814324	-21	kworker/u4:1+events_unbound	21:53:01	0
1751038	99	58	48,7	cyclictest	1856962	-21	kworker/u4:12+events_unbound	23:08:01	0
1751041	99	57	46,7	cyclictest	37	-21	kcompactd0	21:47:12	1
1751041	99	57	44,5	cyclictest	1866399	-21	kworker/u4:14+events_unbound	22:52:00	1
1751038	99	57	32,4	cyclictest	1783574	-21	kworker/u4:1+events_unbound	21:16:59	0
1751041	99	56	49,5	cyclictest	1844462	-21	kworker/u4:7+events_unbound	22:26:59	1
1751041	99	56	49,5	cyclictest	1753520	-21	kworker/u4:8+events_unbound	19:32:28	1
1751038	99	56	46,7	cyclictest	54	-21	kswapd0	22:00:02	0
1751041	99	55	48,5	cyclictest	1055	-21	sshd	22:33:11	1
1751038	99	55	49,5	cyclictest	1844462	-21	kworker/u4:7+events_unbound	22:42:00	0
1751038	99	55	24,26	cyclictest	255	50	irq/23-42890000.ethernet	23:55:10	0
1751041	99	54	47,5	cyclictest	1747366	-21	kworker/u4:10+events_unbound	19:25:03	1
1751041	99	54	41,10	cyclictest	1751036	-21	cyclictest	20:47:33	1
1751038	99	54	50,2	cyclictest	0	-21	swapper/0	00:15:28	0
1751038	99	54	46,6	cyclictest	1913071	-21	kworker/u4:14+events_unbound	23:43:31	0
1751038	99	54	46,6	cyclictest	1835608	-21	kworker/u4:1+events_unbound	23:13:22	0
1751038	99	54	46,6	cyclictest	1834449	-21	ntpq	22:10:35	0
1751038	99	53	46,5	cyclictest	1920507	-21	ssh	23:50:36	0
1751038	99	53	45,5	cyclictest	1890065	-21	gltestperf	23:15:20	0
1751041	99	52	43,6	cyclictest	1799095	-21	/usr/sbin/munin	21:30:16	1
1751041	99	52	41,9	cyclictest	471	-21	weston	23:02:58	1
1751041	99	52	41,6	cyclictest	1955399	-21	kworker/u4:0+events_unbound	00:33:34	1
1751041	99	52	38,12	cyclictest	0	-21	swapper/1	21:10:26	1
1751041	99	52	38,12	cyclictest	0	-21	swapper/1	21:10:26	1
1751038	99	52	45,5	cyclictest	1934571	-21	kworker/u4:3+events_unbound	00:29:00	0
1751038	99	52	36,5	cyclictest	1930290	-21	kworker/u4:9+events_unbound	00:15:00	0
1751038	99	52	30,20	cyclictest	1775111	-21	munin-plugin-st	20:45:01	0
1751038	99	51	44,5	cyclictest	1752213	-21	unixbench_singl	19:10:38	0
1751038	99	51	42,7	cyclictest	1762815	-21	fschecks_count	19:55:18	0
1751038	99	51	41,7	cyclictest	1909350	-21	kworker/u4:10+events_unbound	23:40:00	0
1751041	99	50	44,4	cyclictest	1814324	-21	kworker/u4:1+events_unbound	22:04:00	1
1751041	99	50	40,5	cyclictest	1848835	-21	kworker/u4:10+events_unbound	22:40:58	1
1751038	99	50	42,6	cyclictest	1864998	-21	diskmemload	22:45:42	0
1751038	99	50	35,6	cyclictest	1742657	-21	kworker/u4:2+events_unbound	19:10:00	0
1751041	99	49	4,30	cyclictest	1899004	-21	ssh	23:25:28	1
1751041	99	49	41,6	cyclictest	1931057	-21	sd-accept	00:03:33	1
1751041	99	49	41,5	cyclictest	1831231	-21	kworker/u4:13+events_unbound	22:11:00	1
1751041	99	49	38,9	cyclictest	1932693	-21	gltestperf	00:05:22	1
1751041	99	49	34,10	cyclictest	1751150	-21	ls	19:10:02	1
1751038	99	49	41,6	cyclictest	1808176	-21	gltestperf	21:40:20	0
1751041	99	48	5,35	cyclictest	1773260	-21	sshd	20:35:29	1
1751041	99	48	40,6	cyclictest	1872597	-21	/usr/sbin/munin	22:55:16	1
1751041	99	48	38,8	cyclictest	1794486	-21	latency_hist	21:25:01	1
1751041	99	48	36,9	cyclictest	1758184	-21	ps	19:35:33	1
1751038	99	48	41,5	cyclictest	1934571	-21	kworker/u4:3+events_unbound	00:21:59	0
1751038	99	48	40,5	cyclictest	1780747	-21	sed	21:05:20	0
1751038	99	48	26,20	cyclictest	1757767	-21	fschecks_count	19:35:20	0
1751041	99	47	9,32	cyclictest	1068	-21	snmpd	00:27:32	1
1751041	99	47	39,5	cyclictest	1796782	-21	kworker/u4:12+events_unbound	21:44:58	1
1751041	99	47	38,6	cyclictest	1759068	-21	fschecks_count	19:40:20	1
1751041	99	47	21,20	cyclictest	0	-21	swapper/1	23:50:34	1
1751038	99	47	40,5	cyclictest	1772454	-21	kworker/u4:15+events_unbound	21:11:59	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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