OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 Fri Jan 02, 2026 00:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1814343	99	116	107,7	cyclictest	1956947	-21	kworker/u4:15+events_unbound	23:48:07	0
1814343	99	110	101,7	cyclictest	1881160	-21	kworker/u4:11+events_unbound	21:52:47	0
1814343	99	102	91,9	cyclictest	54	-21	kswapd0	00:30:07	0
1814343	99	100	91,7	cyclictest	1956946	-21	kworker/u4:14+events_unbound	23:23:01	0
1814343	99	99	91,6	cyclictest	1898396	-21	kworker/u4:1+events_unbound	22:12:51	0
1814343	99	99	84,5	cyclictest	1833333	-21	kworker/u4:9+events_unbound	20:52:37	0
1814343	99	97	83,5	cyclictest	1816805	-21	kworker/u4:13+events_unbound	19:37:26	0
1814343	99	93	85,6	cyclictest	1885471	-21	kworker/u4:12+events_unbound	21:57:48	0
1814343	99	86	78,6	cyclictest	1994512	-21	kworker/u4:0+events_unbound	00:08:11	0
1814345	99	83	78,3	cyclictest	1998775	-21	kworker/u4:13+events_unbound	00:15:14	1
1814345	99	83	49,6	cyclictest	54	-21	kswapd0	22:05:38	1
1814345	99	82	74,5	cyclictest	1919235	-21	kworker/u4:15+events_unbound	22:57:57	1
1814345	99	82	74,5	cyclictest	1919235	-21	kworker/u4:15+events_unbound	22:57:56	1
1814343	99	80	73,5	cyclictest	1855815	-21	kworker/u4:2+events_unbound	21:47:46	0
1814343	99	80	73,5	cyclictest	1837183	-21	kworker/u4:0+events_unbound	20:42:36	0
1814345	99	79	71,6	cyclictest	1907064	-21	kworker/u4:1+events_unbound	22:22:52	1
1814343	99	75	68,5	cyclictest	1819353	-21	kworker/u4:16+events_unbound	19:27:23	0
1814343	99	73	67,4	cyclictest	1944159	-21	kworker/u4:5+events_unbound	23:17:00	0
1814345	99	72	64,6	cyclictest	1949041	-21	kworker/u4:9+events_unbound	23:12:58	1
1814345	99	72	54,5	cyclictest	1821866	-21	kworker/u4:8+events_unbound	19:57:27	1
1814343	99	72	66,5	cyclictest	1809484	-21	kworker/u4:12+events_unbound	19:52:26	0
1814345	99	71	63,6	cyclictest	1939921	-21	kworker/u4:2+events_unbound	23:28:02	1
1814343	99	70	67,2	cyclictest	1828276	-21	kworker/u4:17+events_unbound	20:12:31	0
1814343	99	70	63,5	cyclictest	1421832	-21	kworker/u4:5+events_unbound	19:22:22	0
1814343	99	68	62,5	cyclictest	1915560	-21	kworker/u4:14+events_unbound	22:32:55	0
1814345	99	67	59,6	cyclictest	1961199	-21	kworker/u4:16+events_unbound	23:40:13	1
1814343	99	67	58,6	cyclictest	1965450	-21	kworker/u4:19+events_unbound	23:40:01	0
1814343	99	67	37,21	cyclictest	255	50	irq/23-42890000.ethernet	00:00:15	0
1814343	99	65	58,5	cyclictest	1936253	-21	kworker/u4:0+events_unbound	23:25:03	0
1814345	99	64	55,6	cyclictest	1847066	-21	kworker/u4:5+events_unbound	21:12:41	1
1814343	99	64	57,4	cyclictest	1856281	-21	sshd	21:22:42	0
1814343	99	62	57,3	cyclictest	255	50	irq/23-42890000.ethernet	21:25:27	0
1814343	99	62	54,6	cyclictest	1786544	-21	kworker/u4:4+events_unbound	19:17:21	0
1814345	99	61	54,5	cyclictest	1942704	-21	/usr/sbin/munin	23:05:19	1
1814343	99	61	53,6	cyclictest	1953279	-21	kworker/u4:6+events_unbound	23:31:43	0
1814345	99	59	52,5	cyclictest	1953281	-21	kworker/u4:11+events_unbound	23:33:02	1
1814343	99	59	51,6	cyclictest	2003028	-21	kworker/u4:1+events_unbound	00:19:43	0
1814343	99	59	48,9	cyclictest	1942830	-21	fschecks_count	23:05:23	0
1814343	99	59	41,11	cyclictest	1902723	-21	kworker/u4:4-rpciod	22:25:01	0
1814343	99	59	36,15	cyclictest	255	50	irq/23-42890000.ethernet	20:25:10	0
1814345	99	58	50,6	cyclictest	1888781	-21	/usr/sbin/munin	22:00:38	1
1814345	99	58	49,6	cyclictest	1851424	-21	kworker/u4:4+events_unbound	21:20:02	1
1814345	99	56	48,6	cyclictest	1976977	-21	/usr/sbin/munin	23:45:39	1
1814345	99	56	48,6	cyclictest	1956947	-21	kworker/u4:15+events_unbound	23:50:02	1
1814345	99	55	50,3	cyclictest	1939921	-21	kworker/u4:2+events_unbound	23:20:22	1
1814345	99	55	49,4	cyclictest	1911324	-21	kworker/u4:9+events_unbound	22:28:07	1
1814345	99	55	47,6	cyclictest	2014716	-21	/usr/sbin/munin	00:30:43	1
1814345	99	55	47,6	cyclictest	1833331	-21	kworker/u4:3+events_unbound	20:22:32	1
1814345	99	55	47,5	cyclictest	1926465	-21	/usr/sbin/munin	22:45:29	1
1814345	99	55	47,5	cyclictest	1880552	-21	/usr/sbin/munin	21:50:41	1
1814343	99	55	48,5	cyclictest	1867299	-21	ssh	21:35:31	0
1814343	99	55	44,5	cyclictest	1919235	-21	kworker/u4:15+events_unbound	22:36:44	0
1814345	99	54	47,5	cyclictest	1996788	-21	/usr/sbin/munin	00:10:15	1
1814345	99	54	47,5	cyclictest	1953282	-21	kworker/u4:12+events_unbound	23:58:23	1
1814343	99	54	48,4	cyclictest	1819352	-21	kworker/u4:15+events_unbound	20:06:59	0
1814343	99	54	48,3	cyclictest	0	-21	swapper/0	22:25:13	0
1814343	99	54	36,6	cyclictest	1804599	-21	kworker/u4:9+events_unbound	19:14:58	0
1814345	99	53	47,4	cyclictest	1884055	-21	/usr/sbin/munin	21:55:22	1
1814345	99	53	46,5	cyclictest	1917585	-21	df_abs	22:35:20	1
1814345	99	53	45,5	cyclictest	1837184	-21	kworker/u4:6+events_unbound	20:37:35	1
1814343	99	53	47,5	cyclictest	1931997	-21	kworker/u4:18+events_unbound	23:00:02	0
1814343	99	53	47,4	cyclictest	1935376	-21	/usr/sbin/munin	22:55:41	0
1814343	99	53	47,4	cyclictest	1935376	-21	/usr/sbin/munin	22:55:41	0
1814343	99	53	44,7	cyclictest	2003027	-21	kworker/u4:0+events_unbound	00:20:22	0
1814343	99	53	43,7	cyclictest	1985410	-21	/usr/sbin/munin	23:55:42	0
1814343	99	53	34,7	cyclictest	1973912	-21	kworker/u4:4+events_unbound	23:44:45	0
1814345	99	52	35,12	cyclictest	0	-21	swapper/1	21:31:40	1
1814345	99	52	35,12	cyclictest	0	-21	swapper/1	21:31:39	1
1814343	99	52	44,6	cyclictest	1898396	-21	kworker/u4:1+events_unbound	22:17:02	0
1814343	99	52	43,7	cyclictest	1888174	-21	fschecks_time	22:00:21	0
1814345	99	51	40,8	cyclictest	1901540	-21	threads	22:15:39	1
1814343	99	51	44,5	cyclictest	1814272	-21	kworker/u4:7+events_unbound	20:50:01	0
1814345	99	50	43,5	cyclictest	1897025	-21	ld	22:10:31	1
1814345	99	50	42,6	cyclictest	1949039	-21	kworker/u4:8+events_unbound	00:03:11	1
1814343	99	50	42,6	cyclictest	1821865	-21	kworker/u4:6+events_unbound	19:45:44	0
1814343	99	50	39,8	cyclictest	2009332	-21	apt-get	00:25:13	0
1814345	99	49	42,5	cyclictest	1871210	-21	gltestperf	21:40:21	1
1814345	99	49	42,5	cyclictest	1838470	-21	systemd	20:42:34	1
1814345	99	49	40,7	cyclictest	1931126	-21	unixbench_multi	22:50:41	1
1814345	99	49	37,9	cyclictest	54	-21	kswapd0	00:30:01	1
1814343	99	49	41,5	cyclictest	1833286	-21	unixbench_singl	20:20:38	0
1814343	99	49	30,16	cyclictest	0	-21	swapper/0	00:35:31	0
1814345	99	48	39,5	cyclictest	1843537	-21	kworker/u4:12	21:04:59	1
1814345	99	48	37,9	cyclictest	1939921	-21	kworker/u4:2-rpciod	23:20:01	1
1814343	99	48	41,5	cyclictest	1881159	-21	kworker/u4:9+events_unbound	22:09:43	0
1814343	99	48	40,6	cyclictest	1898397	-21	kworker/u4:3+events_unbound	22:41:43	0
1814343	99	48	39,7	cyclictest	1831021	-21	aten_r7power_cu	20:15:16	0
1814343	99	48	37,7	cyclictest	0	-21	swapper/0	20:00:14	0
1814343	99	48	34,6	cyclictest	1982399	-21	kworker/u4:0+events_unbound	23:53:35	0
1814343	99	48	24,5	cyclictest	17	1	rcu_preempt	21:40:25	0
1814345	99	47	40,5	cyclictest	1853942	-21	df_abs	21:20:16	1
1814345	99	47	39,6	cyclictest	1996458	-21	cron	00:10:00	1
1814345	99	47	39,5	cyclictest	1821864	-21	kworker/u4:4+events_unbound	20:17:32	1
1814345	99	47	38,6	cyclictest	1834521	-21	timerwakeupswit	20:25:43	1
1814343	99	47	40,5	cyclictest	1859571	-21	kworker/u4:3+events_unbound	21:31:44	0
1814343	99	47	40,5	cyclictest	1859571	-21	kworker/u4:3+events_unbound	21:31:43	0
1814343	99	47	40,5	cyclictest	1820315	-21	cat	19:30:35	0
1814343	99	47	37,7	cyclictest	1814430	-21	latency_hist	19:10:02	0
1814343	99	47	35,9	cyclictest	1814342	-21	cyclictest	21:17:00	0
1814343	99	47	35,5	cyclictest	1821866	-21	kworker/u4:8+events_unbound	19:58:01	0
1814345	99	46	39,5	cyclictest	1967910	-21	fschecks_time	23:35:20	1
1814345	99	46	38,6	cyclictest	1829506	-21	unixbench_singl	20:05:37	1
1814345	99	46	38,5	cyclictest	1820276	-21	sendmail_mailqu	19:30:34	1
1814345	99	46	37,7	cyclictest	1914321	-21	timerwakeupswit	22:30:44	1
1814345	99	46	36,8	cyclictest	1866659	-21	aten_r7power_en	21:35:18	1
1814343	99	46	38,6	cyclictest	1821866	-21	kworker/u4:8+events_unbound	21:11:44	0
1814343	99	46	37,7	cyclictest	1842500	-21	aten_r7power_cu	21:00:19	0
1814345	99	45	37,5	cyclictest	1825324	-21	sendmail_mailqu	19:50:36	1
1814345	99	45	37,5	cyclictest	0	-21	swapper/1	00:20:31	1
1814345	99	45	35,6	cyclictest	1858007	-21	dpkg	21:25:12	1
1814343	99	45	36,5	cyclictest	1830785	-21	kworker/u4:5-rpciod	20:30:42	0
1814343	99	45	35,5	cyclictest	0	-21	swapper/0	22:50:59	0
1814343	99	45	23,19	cyclictest	1830785	-21	kworker/u4:5-rpciod	21:05:17	0
1814345	99	44	37,5	cyclictest	1921882	-21	fschecks_count	22:40:19	1
1814345	99	44	37,5	cyclictest	1875367	-21	uniq	21:45:20	1
1814345	99	44	37,5	cyclictest	1844628	-21	grep	21:05:38	1
1814345	99	44	33,8	cyclictest	2021482	-21	cron	00:40:01	1
1814345	99	44	33,7	cyclictest	0	-21	swapper/1	20:55:37	1
1814343	99	44	38,4	cyclictest	1946705	-21	aten_r7power_cu	23:10:16	0
1814343	99	44	23,6	cyclictest	1907065	-21	kworker/u4:5+rpciod	22:45:21	0
1814345	99	43	36,5	cyclictest	1814889	-21	gltestperf	19:10:21	1
1814345	99	43	35,6	cyclictest	1833333	-21	kworker/u4:9+events_unbound	20:32:34	1
1814345	99	43	33,7	cyclictest	0	-21	swapper/1	23:00:27	1
1814343	99	43	35,6	cyclictest	1990289	-21	kworker/u4:4+events_unbound	00:15:00	0
1814343	99	43	35,6	cyclictest	1822210	-21	aten_r7power_vo	19:40:15	0
1814345	99	42	36,4	cyclictest	1817283	-21	fschecks_count	19:20:18	1
1814345	99	42	35,4	cyclictest	0	-21	swapper/1	19:40:34	1
1814343	99	42	35,5	cyclictest	1833331	-21	kworker/u4:3+events_unbound	20:35:03	0
1814343	99	42	34,6	cyclictest	1841277	-21	aten_r7power_po	20:55:17	0
1814345	99	41	34,5	cyclictest	1839026	-21	gltestperf	20:45:21	1
1814345	99	41	34,5	cyclictest	1818326	-21	cut	19:25:14	1
1814345	99	41	33,6	cyclictest	1830785	-21	kworker/u4:5+events_unbound	20:15:01	1
1814345	99	41	32,6	cyclictest	0	-21	swapper/1	19:40:01	1
1814345	99	40	33,5	cyclictest	1827248	-21	aten2__	20:00:20	1
1814345	99	40	31,7	cyclictest	1815793	-21	aten_r7power_cu	19:15:15	1
1814345	99	37	27,7	cyclictest	0	-21	swapper/1	19:45:22	1
1814345	99	33	24,7	cyclictest	0	-21	swapper/1	19:10:01	1
1814345	99	33	22,9	cyclictest	0	-21	swapper/1	20:50:35	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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