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 Sun Feb 22, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1963203	99	109	98,8	cyclictest	2120783	-21	kworker/u4:1+events_unbound	11:41:02	0
1963203	99	106	76,28	cyclictest	54	-21	kswapd0	12:10:12	0
1963204	99	97	79,6	cyclictest	1974604	-21	kworker/u4:7+events_unbound	07:55:19	1
1963204	99	96	87,6	cyclictest	1965681	-21	kworker/u4:9+events_unbound	08:20:21	1
1963204	99	95	74,5	cyclictest	2129478	-21	kworker/u4:3+events_unbound	11:51:04	1
1963203	99	95	87,6	cyclictest	2013641	-21	kworker/u4:5+events_unbound	09:45:37	0
1963204	99	94	86,6	cyclictest	1979648	-21	kworker/u4:6+events_unbound	08:50:26	1
1963204	99	94	85,6	cyclictest	2013637	-21	kworker/u4:0+events_unbound	10:25:47	1
1963204	99	93	87,4	cyclictest	2065357	-21	kworker/u4:7+events_unbound	10:35:48	1
1963204	99	90	82,6	cyclictest	1989842	-21	kworker/u4:5+events_unbound	09:05:29	1
1963204	99	90	76,6	cyclictest	2026753	-21	kworker/u4:9+events_unbound	10:00:43	1
1963204	99	87	73,5	cyclictest	2159568	-21	kworker/u4:2+events_unbound	12:36:13	1
1963203	99	87	72,6	cyclictest	2133860	-21	kworker/u4:1+events_unbound	11:56:06	0
1963204	99	83	76,5	cyclictest	2129482	-21	kworker/u4:11+events_unbound	12:06:08	1
1963204	99	82	72,8	cyclictest	1966963	-21	kworker/u4:10+events_unbound	07:30:14	1
1963203	99	81	73,6	cyclictest	2151399	-21	kworker/u4:12+events_unbound	12:16:10	0
1963204	99	78	70,6	cyclictest	1984703	-21	kworker/u4:8+events_unbound	08:35:24	1
1963204	99	77	69,5	cyclictest	2074114	-21	kworker/u4:0+events_unbound	10:55:00	1
1963204	99	76	68,6	cyclictest	2137609	-21	kworker/u4:9+events_unbound	12:26:13	1
1963203	99	74	62,5	cyclictest	2103955	-21	kworker/u4:8+events_unbound	11:26:00	0
1963204	99	73	65,6	cyclictest	2077854	-21	kworker/u4:11+events_unbound	10:55:53	1
1963203	99	73	66,5	cyclictest	2031123	-21	kworker/u4:3+events_unbound	10:05:01	0
1963204	99	72	66,4	cyclictest	2035417	-21	kworker/u4:5+events_unbound	10:30:47	1
1963203	99	70	61,7	cyclictest	2035417	-21	kworker/u4:5+events_unbound	11:00:53	0
1963204	99	69	62,5	cyclictest	1984707	-21	kworker/u4:17+events_unbound	08:35:02	1
1963204	99	69	61,6	cyclictest	2151398	-21	kworker/u4:10+events_unbound	12:20:00	1
1963203	99	69	62,5	cyclictest	2043554	-21	kworker/u4:11+events_unbound	10:10:15	0
1963204	99	67	59,6	cyclictest	1999059	-21	ssh	09:15:29	1
1963204	99	65	57,6	cyclictest	2035417	-21	kworker/u4:5+events_unbound	11:05:54	1
1963203	99	65	58,5	cyclictest	2163955	-21	kworker/u4:5+events_unbound	12:31:13	0
1963204	99	64	58,4	cyclictest	1964417	-21	kworker/u4:7+events_unbound	07:25:01	1
1963204	99	64	57,5	cyclictest	2099618	-21	kworker/u4:7+events_unbound	11:30:03	1
1963204	99	64	56,5	cyclictest	2013639	-21	kworker/u4:3+events_unbound	09:35:35	1
1963204	99	63	55,6	cyclictest	1989840	-21	kworker/u4:1+events_unbound	09:00:02	1
1963204	99	62	54,6	cyclictest	1949673	-21	kworker/u4:4+events_unbound	08:05:20	1
1963203	99	62	51,8	cyclictest	2067644	-21	fschecks_time	10:35:20	0
1963204	99	61	45,5	cyclictest	2103954	-21	kworker/u4:5+events_unbound	11:35:02	1
1963204	99	60	52,6	cyclictest	1960726	-21	kworker/u4:0+events_unbound	07:15:11	1
1963203	99	60	53,5	cyclictest	255	50	irq/23-42890000.ethernet	09:30:17	0
1963203	99	59	51,6	cyclictest	2095250	-21	kworker/u4:4+events_unbound	11:09:44	0
1963204	99	58	51,5	cyclictest	1989842	-21	kworker/u4:5+events_unbound	09:20:31	1
1963204	99	58	49,6	cyclictest	1963199	-21	cyclictest	12:11:52	1
1963204	99	57	50,5	cyclictest	2013641	-21	kworker/u4:5+events_unbound	09:45:59	1
1963204	99	57	49,6	cyclictest	2166234	-21	aten_r7power_cu	12:30:16	1
1963203	99	57	40,6	cyclictest	1970727	-21	kworker/u4:12+events_unbound	07:41:03	0
1963204	99	56	44,7	cyclictest	2158198	-21	sh	12:20:26	1
1963203	99	56	50,4	cyclictest	1965681	-21	kworker/u4:9+events_unbound	09:10:02	0
1963204	99	55	48,5	cyclictest	2090899	-21	kworker/u4:3+events_unbound	11:02:59	1
1963204	99	55	48,5	cyclictest	1964417	-21	kworker/u4:7+events_unbound	07:25:13	1
1963204	99	55	47,5	cyclictest	2052275	-21	kworker/u4:3+events_unbound	10:20:01	1
1963204	99	55	46,6	cyclictest	1995009	-21	mailstats	09:10:43	1
1963204	99	55	39,12	cyclictest	2033518	-21	if_eth0	09:55:23	1
1963203	99	55	47,6	cyclictest	2034793	-21	kworker/u4:4+events_unbound	10:15:44	0
1963203	99	55	45,8	cyclictest	314	-21	systemd-journal	08:55:26	0
1963204	99	54	5,25	cyclictest	2071607	-21	ssh	10:40:14	1
1963204	99	54	46,6	cyclictest	2039169	-21	kworker/u4:10+events_unbound	10:09:44	1
1963204	99	54	46,5	cyclictest	1963199	-21	cyclictest	11:47:48	1
1963203	99	54	32,5	cyclictest	2045638	-21	latency_hist	10:10:01	0
1963204	99	53	46,5	cyclictest	2013637	-21	kworker/u4:0+events_unbound	10:23:00	1
1963204	99	53	46,5	cyclictest	2013637	-21	kworker/u4:0+events_unbound	10:23:00	1
1963203	99	53	47,4	cyclictest	1963199	-21	cyclictest	10:51:20	0
1963203	99	53	35,16	cyclictest	2103307	-21	ssh	11:16:19	0
1963204	99	52	45,5	cyclictest	2095252	-21	kworker/u4:9+events_unbound	11:12:01	1
1963204	99	52	44,6	cyclictest	1989841	-21	kworker/u4:4+events_unbound	09:25:03	1
1963204	99	52	43,7	cyclictest	410	-21	systemd-logind	10:45:49	1
1963204	99	52	42,8	cyclictest	1979022	-21	systemd	08:10:19	1
1963204	99	52	41,7	cyclictest	2136281	-21	grep	11:55:18	1
1963203	99	52	45,5	cyclictest	2071975	-21	tune2fs	10:40:20	0
1963203	99	52	40,8	cyclictest	1975878	-21	kworker/u4:9	08:00:00	0
1963203	99	52	31,15	cyclictest	2127676	-21	fschecks_count	11:45:20	0
1963203	99	51	44,5	cyclictest	1966992	-21	idleruntime-cro	07:25:00	0
1963203	99	51	43,5	cyclictest	2118907	-21	/usr/sbin/munin	11:35:16	0
1963203	99	51	36,10	cyclictest	0	-21	swapper/0	10:34:24	0
1963203	99	51	30,19	cyclictest	1977660	-21	fschecks_time	08:05:19	0
1963204	99	50	41,7	cyclictest	314	-21	systemd-journal	11:21:42	1
1963204	99	50	41,6	cyclictest	0	-21	swapper/1	08:15:19	1
1963204	99	50	28,13	cyclictest	0	-21	swapper/1	10:10:30	1
1963203	99	50	43,5	cyclictest	2086539	-21	kworker/u4:4+events_unbound	11:00:01	0
1963203	99	50	43,5	cyclictest	1995241	-21	/usr/sbin/munin	09:10:44	0
1963203	99	50	40,8	cyclictest	1988622	-21	idleruntime-cro	08:50:00	0
1963203	99	50	39,7	cyclictest	2160154	-21	ssh	12:22:47	0
1963203	99	50	24,20	cyclictest	255	50	irq/23-42890000.ethernet	08:35:09	0
1963204	99	49	42,5	cyclictest	2120784	-21	kworker/u4:10+events_unbound	11:43:44	1
1963204	99	49	41,5	cyclictest	1964418	-21	kworker/u4:8+events_unbound	08:00:19	1
1963204	99	49	40,6	cyclictest	0	-21	swapper/1	08:45:25	1
1963204	99	49	35,12	cyclictest	0	-21	swapper/1	12:05:00	1
1963204	99	49	35,12	cyclictest	0	-21	swapper/1	12:05:00	1
1963204	99	48	41,5	cyclictest	1983223	-21	threads	08:25:35	1
1963203	99	48	41,6	cyclictest	1989843	-21	kworker/u4:7+events_unbound	08:55:01	0
1963203	99	48	41,5	cyclictest	1982195	-21	kworker/u4:0+events_unbound	08:25:22	0
1963203	99	48	41,4	cyclictest	2013639	-21	kworker/u4:3+events_unbound	09:35:38	0
1963203	99	48	40,6	cyclictest	2174502	-21	cron	12:40:01	0
1963203	99	48	40,6	cyclictest	2035417	-21	kworker/u4:5+events_unbound	10:25:03	0
1963203	99	48	40,5	cyclictest	2033158	-21	/usr/sbin/munin	09:55:18	0
1963204	99	47	40,5	cyclictest	1987304	-21	grep	08:40:37	1
1963204	99	47	39,6	cyclictest	2029325	-21	netstat	09:50:24	1
1963204	99	47	38,6	cyclictest	2111423	-21	unixbench-2d	11:25:41	1
1963204	99	47	38,6	cyclictest	0	-21	swapper/1	09:40:36	1
1963204	99	47	33,11	cyclictest	2012081	-21	if_eth0	09:30:25	1
1963203	99	47	41,4	cyclictest	2141360	-21	timerandwakeup	12:00:37	0
1963203	99	47	41,4	cyclictest	2141360	-21	timerandwakeup	12:00:37	0
1963203	99	47	40,5	cyclictest	2011228	-21	gpgv	09:30:01	0
1963203	99	47	39,6	cyclictest	2161944	-21	aten_r7power_en	12:25:16	0
1963203	99	47	38,7	cyclictest	536	-21	rs:main		0
1963203	99	46	39,5	cyclictest	2146161	-21	sshd	12:06:08	0
1963203	99	46	38,5	cyclictest	1964643	-21	aten2__	07:15:17	0
1963203	99	46	37,7	cyclictest	1972354	-21	aten_r7power_en	07:45:22	0
1963203	99	46	36,7	cyclictest	1998593	-21	df_abs	09:15:19	0
1963204	99	45	34,8	cyclictest	1972688	-21	gltestperf	07:45:26	1
1963203	99	45	6,32	cyclictest	2021057	-21	ssh	09:40:37	0
1963203	99	45	38,5	cyclictest	2077854	-21	kworker/u4:11+events_unbound	10:49:43	0
1963203	99	45	38,5	cyclictest	2003376	-21	/usr/sbin/munin	09:20:25	0
1963203	99	45	38,5	cyclictest	1985224	-21	fschecks_count	08:35:24	0
1963203	99	45	37,6	cyclictest	2018013	-21	kworker/u4:7+events_unbound	09:50:40	0
1963203	99	45	37,6	cyclictest	1986819	-21	sshd	08:40:24	0
1963203	99	44	37,5	cyclictest	2106012	-21	aten_r7power_cu	11:20:17	0
1963203	99	44	35,7	cyclictest	2098264	-21	/usr/sbin/munin	11:10:40	0
1963203	99	44	35,6	cyclictest	0	-21	swapper/0	10:20:28	0
1963203	99	44	35,6	cyclictest	0	-21	swapper/0	10:20:27	0
1963204	99	43	33,8	cyclictest	1970541	-21	timerandwakeup	07:35:36	1
1963203	99	43	25,5	cyclictest	0	-21	swapper/0	11:30:27	0
1963204	99	42	32,7	cyclictest	0	-21	swapper/1	07:50:30	1
1963204	99	42	31,8	cyclictest	0	-21	swapper/1	07:45:00	1
1963203	99	42	35,5	cyclictest	1969450	-21	unixbench_singl	07:30:37	0
1963203	99	42	35,4	cyclictest	2129478	-21	kworker/u4:3-rpciod	11:50:20	0
1963203	99	42	34,5	cyclictest	1970855	-21	latency_hist	07:40:01	0
1963204	99	41	33,6	cyclictest	2074114	-21	kworker/u4:0-rpciod	11:15:15	1
1963204	99	41	33,6	cyclictest	1963306	-21	latency_hist	07:10:03	1
1963204	99	41	32,7	cyclictest	1991577	-21	fschecks_count	09:00:19	1
1963203	99	41	35,4	cyclictest	0	-21	swapper/0	07:15:00	0
1963203	99	41	32,6	cyclictest	1981260	-21	aten_r7power_vo	08:20:17	0
1963204	99	40	29,8	cyclictest	0	-21	swapper/1	07:10:41	1
1963203	99	40	32,6	cyclictest	1980696	-21	timerandwakeup	08:15:35	0
1963203	99	40	31,7	cyclictest	1974043	-21	kernelversion	07:50:21	0
1963203	99	39	30,7	cyclictest	1978618	-21	aten_r7power_cu	08:10:14	0
1963203	99	38	32,4	cyclictest	1991673	-21	gltestperf	09:00:20	0
1963203	99	37	29,6	cyclictest	1967558	-21	gltestperf	07:25:22	0
1963203	99	35	26,5	cyclictest	0	-21	swapper/0	07:10:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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