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 792 highest latencies:

System rack7slot2.osadl.org (updated Sat Feb 28, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1853082	99	118	104,5	cyclictest	1965698	-21	kworker/u4:7+events_unbound	10:55:59	1
1853082	99	117	109,6	cyclictest	1965698	-21	kworker/u4:7+events_unbound	10:51:00	1
1853082	99	102	93,7	cyclictest	1908537	-21	kworker/u4:3+events_unbound	10:15:55	1
1853081	99	98	87,8	cyclictest	1997662	-21	ssh	11:20:11	0
1853082	99	95	88,5	cyclictest	1854309	-21	kworker/u4:8+events_unbound	07:40:22	1
1853082	99	93	78,7	cyclictest	1860786	-21	kworker/u4:7+events_unbound	07:50:27	1
1853082	99	89	76,6	cyclictest	1851808	-21	kworker/u4:1+events_unbound	07:10:14	1
1853081	99	87	72,12	cyclictest	54	-21	kswapd0	10:50:13	0
1853081	99	84	72,9	cyclictest	2014792	-21	rm	11:40:11	0
1853081	99	84	42,37	cyclictest	1980632	-21	aten_r7power_vo	11:00:17	0
1853081	99	84	42,37	cyclictest	1980632	-21	aten_r7power_vo	11:00:16	0
1853082	99	81	74,5	cyclictest	1886842	-21	kworker/u4:5+events_unbound	09:15:48	1
1853081	99	77	38,32	cyclictest	54	-21	kswapd0	11:50:12	0
1853082	99	75	67,6	cyclictest	1855592	-21	kworker/u4:11+events_unbound	08:05:00	1
1853081	99	75	31,41	cyclictest	255	50	irq/23-42890000.ethernet	11:45:26	0
1853082	99	74	67,5	cyclictest	1873664	-21	kworker/u4:19+events_unbound	08:40:43	1
1853082	99	74	61,6	cyclictest	2059601	-21	kworker/u4:18+events_unbound	12:36:09	1
1853081	99	74	43,29	cyclictest	1906441	-21	aten_r7power_vo	09:35:16	0
1853081	99	73	67,3	cyclictest	2029868	-21	kworker/u4:1+events_unbound	12:31:10	0
1853081	99	72	3,64	cyclictest	1923796	-21	apt-get	09:55:11	0
1853082	99	71	58,5	cyclictest	1869810	-21	kworker/u4:5+events_unbound	08:30:37	1
1853081	99	71	2,7	cyclictest	1994312	-21	awk	11:15:38	0
1853081	99	69	61,5	cyclictest	1877501	-21	kworker/u4:4+events_unbound	09:20:50	0
1853081	99	68	37,29	cyclictest	1989121	-21	aten_r7power_cu	11:10:14	0
1853082	99	67	56,7	cyclictest	2053038	-21	latency_hist	12:25:02	1
1853082	99	67	48,6	cyclictest	2025533	-21	kworker/u4:11+events_unbound	11:56:01	1
1853081	99	67	62,3	cyclictest	1862082	-21	kworker/u4:10+events_unbound	08:05:34	0
1853081	99	67	62,3	cyclictest	1862082	-21	kworker/u4:10+events_unbound	08:05:33	0
1853082	99	66	50,9	cyclictest	2004334	-21	kworker/u4:9-xprtiod	11:40:12	1
1853081	99	66	58,6	cyclictest	1947988	-21	kworker/u4:2+events_unbound	10:25:55	0
1853081	99	66	2,12	cyclictest	2010333	-21	sed	11:35:02	0
1853082	99	65	50,6	cyclictest	1956841	-21	kworker/u4:9+events_unbound	10:36:00	1
1853081	99	65	61,2	cyclictest	0	-21	swapper/0	09:25:27	0
1853081	99	65	41,22	cyclictest	1936910	-21	/usr/sbin/munin	10:10:10	0
1853081	99	64	56,6	cyclictest	1908542	-21	kworker/u4:9+events_unbound	09:50:52	0
1853081	99	64	55,7	cyclictest	1908538	-21	kworker/u4:4+events_unbound	09:45:51	0
1853081	99	64	27,24	cyclictest	255	50	irq/23-42890000.ethernet	12:20:12	0
1853081	99	64	24,35	cyclictest	1971728	-21	apt-key	10:50:02	0
1853081	99	64	2,13	cyclictest	1959086	-21	ssh	10:35:18	0
1853081	99	63	3,7	cyclictest	2011334	-21	ntpq	11:35:34	0
1853081	99	63	32,29	cyclictest	1976733	-21	kernelversion	10:55:21	0
1853081	99	63	3,13	cyclictest	1884975	-21	ssh	09:10:24	0
1853081	99	63	27,32	cyclictest	0	-21	swapper/0	12:25:19	0
1853081	99	63	26,32	cyclictest	1856738	-21	sort	07:20:38	0
1853081	99	63	21,38	cyclictest	1882227	-21	ntp_offset	09:00:28	0
1853081	99	63	2,12	cyclictest	1985553	-21	ntpq	11:05:30	0
1853081	99	63	2,12	cyclictest	1860813	-21	idleruntime-cro	07:39:59	0
1853082	99	62	46,7	cyclictest	1908538	-21	kworker/u4:4+events_unbound	10:12:59	1
1853081	99	62	5,5	cyclictest	1880320	-21	apt-get	08:55:12	0
1853081	99	62	34,26	cyclictest	2040790	-21	fschecks_count	12:10:16	0
1853081	99	62	2,5	cyclictest	1879619	-21	ntpq	08:50:27	0
1853081	99	62	2,10	cyclictest	1954420	-21	apt-get	10:30:11	0
1853081	99	62	1,13	cyclictest	2065717	-21	ssh	12:40:00	0
1853082	99	61	53,6	cyclictest	1878855	-21	kworker/u4:5+events_unbound	08:50:46	1
1853081	99	61	3,16	cyclictest	1870581	-21	ntpq	08:15:28	0
1853081	99	61	3,11	cyclictest	1945711	-21	apt-get	10:20:10	0
1853081	99	61	27,30	cyclictest	0	-21	swapper/0	10:15:35	0
1853081	99	61	2,6	cyclictest	1963212	-21	apt-get	10:40:17	0
1853081	99	61	26,32	cyclictest	0	-21	swapper/0	12:05:17	0
1853081	99	61	22,36	cyclictest	255	50	irq/23-42890000.ethernet	10:00:23	0
1853082	99	60	47,5	cyclictest	1867186	-21	kworker/u4:8+events_unbound	08:55:45	1
1853082	99	60	44,6	cyclictest	2055316	-21	kworker/u4:16+events_unbound	12:26:59	1
1853081	99	60	3,7	cyclictest	1889499	-21	ssh	09:15:31	0
1853081	99	60	36,21	cyclictest	0	-21	swapper/0	11:25:32	0
1853081	99	60	28,28	cyclictest	0	-21	swapper/0	09:30:19	0
1853081	99	60	2,11	cyclictest	2027791	-21	basename	11:55:15	0
1853082	99	59	51,6	cyclictest	1874934	-21	kworker/u4:21+events_unbound	08:45:45	1
1853081	99	59	3,8	cyclictest	1877124	-21	grep	08:40:33	0
1853081	99	59	3,10	cyclictest	1872583	-21	apt-get	08:25:13	0
1853081	99	59	24,31	cyclictest	0	-21	swapper/0	12:15:29	0
1853081	99	59	2,15	cyclictest	1866886	-21	/usr/sbin/munin	08:00:37	0
1853082	99	58	50,6	cyclictest	1917464	-21	kworker/u4:2+events_unbound	10:00:00	1
1853082	99	58	50,6	cyclictest	1874934	-21	kworker/u4:21+events_unbound	09:00:44	1
1853082	99	58	50,5	cyclictest	1928623	-21	/usr/sbin/munin	10:00:19	1
1853081	99	58	5,48	cyclictest	1933224	-21	ssh	10:05:24	0
1853081	99	58	3,9	cyclictest	1883495	-21	ntpq	09:05:28	0
1853081	99	58	3,5	cyclictest	1862868	-21	ntpq	07:45:27	0
1853081	99	58	31,24	cyclictest	0	-21	swapper/0	09:40:28	0
1853081	99	58	31,24	cyclictest	0	-21	swapper/0	09:40:28	0
1853081	99	58	27,27	cyclictest	1854308	-21	kworker/u4:6+rpciod	07:15:36	0
1853081	99	58	2,11	cyclictest	1868710	-21	munin-node	08:10:09	0
1853081	99	58	1,8	cyclictest	1863543	-21	apt-get	07:50:11	0
1853081	99	57	2,8	cyclictest	1853827	-21	ntpq	07:10:26	0
1853081	99	57	28,26	cyclictest	0	-21	swapper/0	07:40:19	0
1853081	99	57	27,25	cyclictest	0	-21	swapper/0	07:30:16	0
1853081	99	57	26,28	cyclictest	0	-21	swapper/0	08:20:19	0
1853081	99	57	2,15	cyclictest	1875695	-21	ntpq	08:35:25	0
1853081	99	57	2,14	cyclictest	2035948	-21	ssh	12:05:01	0
1853081	99	57	2,14	cyclictest	2035948	-21	ssh	12:05:00	0
1853081	99	57	2,10	cyclictest	1857082	-21	apt-get	07:25:12	0
1853081	99	57	14,40	cyclictest	1874185	-21	fschecks_time	08:30:16	0
1853082	99	56	49,5	cyclictest	1999447	-21	kworker/u4:2+events_unbound	11:23:01	1
1853082	99	56	42,5	cyclictest	1969480	-21	kworker/u4:13+events_unbound	10:46:59	1
1853082	99	56	2,42	cyclictest	2024127	-21	ssh	11:50:32	1
1853081	99	56	4,6	cyclictest	1865448	-21	ntpq	07:55:30	0
1853081	99	56	25,28	cyclictest	0	-21	swapper/0	08:45:25	0
1853082	99	55	36,7	cyclictest	1908539	-21	kworker/u4:5+events_unbound	09:47:03	1
1853082	99	54	47,5	cyclictest	1898389	-21	ssh	09:25:38	1
1853082	99	54	46,6	cyclictest	2034239	-21	kworker/u4:7+events_unbound	12:03:58	1
1853082	99	54	46,6	cyclictest	2034239	-21	kworker/u4:7+events_unbound	12:03:58	1
1853082	99	54	46,6	cyclictest	1858161	-21	kworker/u4:16+events_unbound	07:55:27	1
1853082	99	53	46,5	cyclictest	1999447	-21	kworker/u4:2+events_unbound	11:46:14	1
1853082	99	53	46,5	cyclictest	1943519	-21	kworker/u4:8+events_unbound	11:13:01	1
1853082	99	53	45,6	cyclictest	1978213	-21	kworker/u4:15+events_unbound	11:09:00	1
1853082	99	53	39,5	cyclictest	2034241	-21	kworker/u4:9+events_unbound	12:06:05	1
1853082	99	53	33,7	cyclictest	1873665	-21	kworker/u4:20+events_unbound	08:38:54	1
1853082	99	52	45,5	cyclictest	2061572	-21	latency_hist	12:35:01	1
1853082	99	52	45,5	cyclictest	1886841	-21	kworker/u4:1+events_unbound	09:23:44	1
1853082	99	51	44,5	cyclictest	1919731	-21	/usr/sbin/munin	09:50:20	1
1853082	99	51	44,5	cyclictest	1883996	-21	diskmemload	10:25:53	1
1853082	99	51	42,7	cyclictest	388	-21	dbus-daemon	10:40:55	1
1853082	99	51	42,7	cyclictest	2007754	-21	systemd	11:31:02	1
1853082	99	51	35,5	cyclictest	1956840	-21	kworker/u4:7+events_unbound	10:34:38	1
1853082	99	49	43,4	cyclictest	1908537	-21	kworker/u4:3+events_unbound	10:08:59	1
1853082	99	49	43,4	cyclictest	1903313	-21	systemd	09:30:49	1
1853082	99	49	42,5	cyclictest	1943519	-21	kworker/u4:8+events_unbound	11:26:59	1
1853082	99	49	42,5	cyclictest	1911650	-21	sendmail_mailqu	09:40:36	1
1853082	99	49	42,5	cyclictest	1911650	-21	sendmail_mailqu	09:40:35	1
1853082	99	47	41,4	cyclictest	0	-21	swapper/1	08:15:34	1
1853082	99	47	39,6	cyclictest	1854308	-21	kworker/u4:6+events_unbound	07:39:03	1
1853082	99	47	38,5	cyclictest	2014559	-21	latency_hist	11:40:02	1
1853082	99	47	36,9	cyclictest	1997472	-21	latency_hist	11:20:01	1
1853082	99	46	37,4	cyclictest	1904076	-21	kworker/u4:7+events_unbound	09:35:42	1
1853082	99	46	33,12	cyclictest	27	1	ktimers/1	09:10:31	1
1853082	99	46	32,11	cyclictest	0	-21	swapper/1	08:05:31	1
1853082	99	46	32,11	cyclictest	0	-21	swapper/1	08:05:31	1
1853082	99	45	39,5	cyclictest	1797615	-21	kworker/u4:7+events_unbound	07:20:02	1
1853082	99	45	28,6	cyclictest	1947988	-21	kworker/u4:2+events_unbound	10:22:20	1
1853082	99	45	27,6	cyclictest	1973896	-21	kworker/u4:10+events_unbound	11:02:39	1
1853082	99	45	27,6	cyclictest	1973896	-21	kworker/u4:10+events_unbound	11:02:39	1
1853081	99	45	2,40	cyclictest	1853091	-21	grep	07:10:00	0
1853082	99	44	37,4	cyclictest	2034238	-21	kworker/u4:6-rpciod	12:15:25	1
1853082	99	44	36,6	cyclictest	2041160	-21	ntp_kernel_pll_	12:10:23	1
1853082	99	44	36,6	cyclictest	1882693	-21	kworker/u4:3+events_unbound	09:05:13	1
1853082	99	43	35,6	cyclictest	1854700	-21	df_abs	07:15:16	1
1853082	99	42	35,5	cyclictest	1858170	-21	cron	07:30:00	1
1853082	99	42	28,5	cyclictest	1860786	-21	kworker/u4:7+events_unbound	07:48:42	1
1853082	99	41	34,5	cyclictest	1872384	-21	kworker/u4:2+events_unbound	08:22:45	1
1853082	99	41	34,5	cyclictest	1859102	-21	sendmail_mailqu	07:30:35	1
1853082	99	41	33,6	cyclictest	27	1	ktimers/1	08:25:31	1
1853082	99	41	33,6	cyclictest	0	-21	swapper/1	08:10:42	1
1853082	99	35	26,7	cyclictest	0	-21	swapper/1	07:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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