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 Mar 03, 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
1787897	99	126	104,8	cyclictest	1915715	-21	kworker/u4:1+events_unbound	11:45:19	0
1787897	99	121	113,5	cyclictest	1885968	-21	kworker/u4:4+events_unbound	11:10:10	0
1787897	99	109	99,7	cyclictest	54	-21	kswapd0	11:05:09	0
1787897	99	108	80,21	cyclictest	54	-21	kswapd0	12:10:09	0
1787897	99	108	57,42	cyclictest	1905196	-21	sh	10:50:15	0
1787897	99	99	90,6	cyclictest	1821625	-21	kworker/u4:0+events_unbound	09:14:45	0
1787897	99	98	85,5	cyclictest	1838512	-21	kworker/u4:2+events_unbound	09:49:52	0
1787897	99	89	80,7	cyclictest	1860389	-21	kworker/u4:8+events_unbound	10:24:58	0
1787897	99	89	78,5	cyclictest	1814931	-21	kworker/u4:1+events_unbound	08:59:42	0
1787897	99	87	79,6	cyclictest	1834188	-21	kworker/u4:15+events_unbound	09:34:49	0
1787897	99	87	79,5	cyclictest	1983610	-21	kworker/u4:7+events_unbound	12:35:31	0
1787898	99	82	68,10	cyclictest	0	-21	swapper/1	12:10:10	1
1787897	99	82	74,6	cyclictest	1807197	-21	kworker/u4:7+events_unbound	09:19:45	0
1787897	99	82	65,5	cyclictest	1834187	-21	kworker/u4:13+events_unbound	09:54:52	0
1787897	99	82	65,5	cyclictest	1834187	-21	kworker/u4:13+events_unbound	09:54:52	0
1787898	99	77	63,10	cyclictest	0	-21	swapper/1	11:25:12	1
1787897	99	76	69,5	cyclictest	1937334	-21	kworker/u4:4+events_unbound	11:40:18	0
1787897	99	75	67,5	cyclictest	1828512	-21	gcc	09:20:28	0
1787897	99	74	66,5	cyclictest	1784181	-21	kworker/u4:1+events_unbound	07:35:01	0
1787897	99	73	65,6	cyclictest	1864148	-21	kworker/u4:11+events_unbound	10:09:55	0
1787898	99	71	57,12	cyclictest	54	-21	kswapd0	11:35:17	1
1787897	99	71	63,6	cyclictest	1967045	-21	kworker/u4:0+events_unbound	12:17:00	0
1787897	99	70	63,5	cyclictest	1924343	-21	kworker/u4:5+events_unbound	11:20:12	0
1787897	99	69	62,5	cyclictest	1789115	-21	kworker/u4:8+events_unbound	08:44:41	0
1787897	99	69	51,6	cyclictest	1907157	-21	kworker/u4:16+events_unbound	10:55:06	0
1787898	99	66	62,3	cyclictest	27	1	ktimers/1	09:31:55	1
1787897	99	66	59,5	cyclictest	1868509	-21	kworker/u4:12+events_unbound	10:17:00	0
1787897	99	66	59,5	cyclictest	1561147	-21	kworker/u4:9+events_unbound	07:44:26	0
1787898	99	63	52,9	cyclictest	54	-21	kswapd0	11:35:00	1
1787898	99	62	55,5	cyclictest	1808466	-21	kworker/u4:10+events_unbound	08:35:01	1
1787897	99	62	55,5	cyclictest	1789115	-21	kworker/u4:8+events_unbound	07:19:23	0
1787897	99	62	55,5	cyclictest	1789114	-21	kworker/u4:7+events_unbound	08:09:32	0
1787897	99	62	53,7	cyclictest	1907156	-21	kworker/u4:15+events_unbound	11:01:43	0
1787898	99	61	52,6	cyclictest	1897149	-21	kernelversion	10:40:21	1
1787897	99	61	54,5	cyclictest	1789119	-21	kworker/u4:10+events_unbound	07:14:22	0
1787897	99	61	53,6	cyclictest	1817498	-21	kworker/u4:14+events_unbound	09:09:44	0
1787897	99	61	50,9	cyclictest	54	-21	kswapd0	12:25:06	0
1787898	99	60	5,38	cyclictest	1867352	-21	ssh	10:05:35	1
1787898	99	60	53,5	cyclictest	1789114	-21	kworker/u4:7+events_unbound	08:05:01	1
1787897	99	59	42,15	cyclictest	1924340	-21	kworker/u4:0+events_unbound	11:20:00	0
1787897	99	57	50,5	cyclictest	1962711	-21	kworker/u4:1+events_unbound	12:21:59	0
1787897	99	57	50,5	cyclictest	1803346	-21	kworker/u4:3+events_unbound	08:49:41	0
1787897	99	57	37,7	cyclictest	1967045	-21	kworker/u4:0+events_unbound	12:02:59	0
1787898	99	56	6,40	cyclictest	1849258	-21	ssh	09:45:13	1
1787898	99	56	47,7	cyclictest	54	-21	kswapd0	10:50:01	1
1787897	99	56	49,5	cyclictest	1860389	-21	kworker/u4:8+events_unbound	10:14:59	0
1787897	99	56	49,5	cyclictest	1784182	-21	kworker/u4:2+events_unbound	07:55:44	0
1787897	99	56	48,6	cyclictest	1842890	-21	kworker/u4:3+events_unbound	09:41:42	0
1787897	99	56	37,17	cyclictest	1861777	-21	systemd	09:59:53	0
1787898	99	55	47,6	cyclictest	1983612	-21	kworker/u4:9+events_unbound	12:25:29	1
1787898	99	55	46,7	cyclictest	1888353	-21	rm	10:30:21	1
1787898	99	55	46,7	cyclictest	1834187	-21	kworker/u4:13+events_unbound	10:04:54	1
1787898	99	55	45,7	cyclictest	1847257	-21	kworker/u4:6-rpciod	09:55:01	1
1787898	99	55	45,7	cyclictest	1847257	-21	kworker/u4:6-rpciod	09:55:00	1
1787898	99	55	17,11	cyclictest	1905214	-21	ssh	10:50:18	1
1787897	99	55	49,4	cyclictest	1897493	-21	proc_pri	10:40:36	0
1787898	99	54	18,11	cyclictest	1820925	-21	ssh	09:11:27	1
1787897	99	54	47,5	cyclictest	1957760	-21	kworker/u4:5+events_unbound	12:05:25	0
1787897	99	54	47,5	cyclictest	1924342	-21	kworker/u4:3+events_unbound	11:32:46	0
1787897	99	54	45,7	cyclictest	1811020	-21	systemd	08:39:39	0
1787897	99	54	36,9	cyclictest	1904931	-21	cat	10:50:01	0
1787898	99	53	15,16	cyclictest	1996173	-21	ssh	12:36:51	1
1787898	99	53	15,14	cyclictest	1834515	-21	ssh	09:27:26	1
1787898	99	53	15,10	cyclictest	1968062	-21	ssh	12:04:04	1
1787898	99	53	13,15	cyclictest	1896013	-21	ssh	10:39:40	1
1787898	99	53	13,14	cyclictest	1959562	-21	ssh	11:54:06	1
1787897	99	53	47,5	cyclictest	1937335	-21	kworker/u4:5+events_unbound	11:35:20	0
1787897	99	53	47,4	cyclictest	1834187	-21	kworker/u4:13+events_unbound	09:37:00	0
1787897	99	53	36,8	cyclictest	1889700	-21	kworker/u4:6+events_unbound	10:31:44	0
1787898	99	52	45,5	cyclictest	1967046	-21	kworker/u4:4-rpciod	12:15:26	1
1787898	99	52	17,11	cyclictest	1990906	-21	ssh	12:30:41	1
1787898	99	52	16,9	cyclictest	1875049	-21	apt-get	10:15:13	1
1787898	99	52	16,10	cyclictest	1817016	-21	ntpq	09:00:29	1
1787898	99	52	15,10	cyclictest	1848656	-21	ssh	09:44:33	1
1787898	99	52	14,13	cyclictest	1873819	-21	ssh	10:13:29	1
1787898	99	52	14,12	cyclictest	1859954	-21	ssh	09:56:54	1
1787898	99	52	12,16	cyclictest	1971693	-21	ssh	12:08:02	1
1787897	99	52	45,5	cyclictest	1885968	-21	kworker/u4:4+events_unbound	10:27:43	0
1787898	99	51	9,29	cyclictest	1952585	-21	ssh	11:45:24	1
1787898	99	51	42,6	cyclictest	1926743	-21	fschecks_time	11:15:18	1
1787898	99	51	41,8	cyclictest	0	-21	swapper/1	09:20:28	1
1787898	99	51	39,8	cyclictest	1841847	-21	grep	09:35:38	1
1787898	99	51	19,10	cyclictest	0	-21	swapper/1	07:35:01	1
1787898	99	51	14,10	cyclictest	1933027	-21	ssh	11:22:29	1
1787898	99	51	14,10	cyclictest	1885674	-21	ssh	10:26:46	1
1787898	99	51	13,13	cyclictest	1949353	-21	ssh	11:41:20	1
1787898	99	51	12,14	cyclictest	1924838	-21	ssh	11:13:00	1
1787897	99	51	44,5	cyclictest	1795588	-21	kworker/u4:5+events_unbound	08:24:36	0
1787897	99	51	43,6	cyclictest	1949713	-21	kworker/u4:6+events_unbound	11:58:59	0
1787897	99	51	42,6	cyclictest	1987854	-21	kworker/u4:8+events_unbound	12:30:42	0
1787898	99	50	42,5	cyclictest	1824310	-21	rm	09:15:35	1
1787898	99	50	41,6	cyclictest	1985633	-21	awk	12:25:01	1
1787898	99	50	15,10	cyclictest	1910847	-21	ssh	10:55:58	1
1787898	99	50	14,10	cyclictest	1921731	-21	ssh	11:09:57	1
1787898	99	50	13,10	cyclictest	1963935	-21	ssh	11:59:18	1
1787897	99	50	43,5	cyclictest	1932996	-21	kworker/u4:10+events_unbound	11:27:00	0
1787897	99	50	43,5	cyclictest	1795589	-21	kworker/u4:6+events_unbound	07:39:25	0
1787898	99	49	33,11	cyclictest	1797684	-21	ntpq	07:45:28	1
1787898	99	49	12,12	cyclictest	1796394	-21	ntpq	07:40:26	1
1787898	99	48	9,14	cyclictest	1811460	-21	diskstats	08:40:16	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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