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 Tue Jul 21, 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
2058139	99	176	152,17	cyclictest	53	-21	kswapd0	11:10:06	0
2058140	99	102	94,6	cyclictest	2216563	-21	kworker/u4:6+events_unbound	11:35:12	1
2058139	99	95	87,6	cyclictest	2145284	-21	kworker/u4:12+events_unbound	10:29:56	0
2058139	99	93	82,9	cyclictest	53	-21	kswapd0	10:50:00	0
2058139	99	93	77,6	cyclictest	2257498	-21	kworker/u4:9+events_unbound	12:30:24	0
2058139	99	90	83,5	cyclictest	2208121	-21	kworker/u4:12+events_unbound	12:10:21	0
2058140	99	87	79,5	cyclictest	2082463	-21	kworker/u4:4+events_unbound	09:14:42	1
2058139	99	86	77,6	cyclictest	2208119	-21	kworker/u4:10+events_unbound	11:25:08	0
2058140	99	85	78,5	cyclictest	2194549	-21	kworker/u4:1+events_unbound	11:50:17	1
2058139	99	85	77,6	cyclictest	2212690	-21	kworker/u4:3+events_unbound	11:30:11	0
2058139	99	79	58,9	cyclictest	2203596	-21	kworker/u4:2+events_unbound	11:40:15	0
2058140	99	77	69,6	cyclictest	2163390	-21	kworker/u4:7+events_unbound	10:35:35	1
2058139	99	72	65,5	cyclictest	2070859	-21	kworker/u4:9+events_unbound	09:19:43	0
2058140	99	70	62,6	cyclictest	2207450	-21	kworker/u4:9+events_unbound	11:45:17	1
2058140	99	70	62,6	cyclictest	2207450	-21	kworker/u4:9+events_unbound	11:45:16	1
2058139	99	70	62,5	cyclictest	2104860	-21	kworker/u4:13+events_unbound	09:34:47	0
2058140	99	64	56,6	cyclictest	2083735	-21	kworker/u4:0+events_unbound	09:29:45	1
2058140	99	64	45,5	cyclictest	2141399	-21	kworker/u4:11+events_unbound	10:09:52	1
2058139	99	62	41,18	cyclictest	2151850	-21	modprobe	10:20:00	0
2058140	99	60	52,6	cyclictest	53	-21	kswapd0	12:25:35	1
2058140	99	59	49,7	cyclictest	2058137	-21	cyclictest	10:56:36	1
2058139	99	59	52,5	cyclictest	2163390	-21	kworker/u4:7+events_unbound	10:55:02	0
2058140	99	58	49,7	cyclictest	2239252	-21	kworker/u4:0+events_unbound	12:05:02	1
2058140	99	57	35,15	cyclictest	53	-21	kswapd0	11:10:06	1
2058139	99	57	48,7	cyclictest	2270466	-21	kworker/u4:12+events_unbound	12:35:26	0
2058139	99	56	49,5	cyclictest	2055632	-21	kworker/u4:5+events_unbound	08:19:31	0
2058139	99	56	48,6	cyclictest	2085091	-21	kworker/u4:8+events_unbound	08:54:40	0
2058140	99	55	47,6	cyclictest	2059358	-21	kworker/u4:8+events_unbound	07:54:28	1
2058139	99	55	47,6	cyclictest	2171840	-21	kworker/u4:16+events_unbound	11:01:46	0
2058139	99	55	45,8	cyclictest	2058137	-21	cyclictest	10:04:51	0
2058139	99	55	45,8	cyclictest	2058137	-21	cyclictest	10:04:51	0
2058140	99	54	45,7	cyclictest	2088680	-21	switchtime	09:05:37	1
2058140	99	54	45,6	cyclictest	2069587	-21	kworker/u4:3+events_unbound	08:29:33	1
2058140	99	54	39,12	cyclictest	0	-21	swapper/1	12:30:14	1
2058140	99	54	34,5	cyclictest	2199070	-21	kworker/u4:7+events_unbound	11:20:08	1
2058139	99	54	46,6	cyclictest	2171158	-21	/usr/sbin/munin	10:40:39	0
2058139	99	54	43,8	cyclictest	2183155	-21	ssh	10:55:01	0
2058139	99	54	43,8	cyclictest	2183155	-21	ssh	10:55:01	0
2058140	99	53	44,7	cyclictest	2060642	-21	kworker/u4:10+events_unbound	07:25:02	1
2058140	99	53	43,6	cyclictest	0	-21	swapper/1	11:26:18	1
2058140	99	52	44,6	cyclictest	2130868	-21	ntpq	09:55:44	1
2058140	99	52	44,5	cyclictest	2144250	-21	sendmail_mailqu	10:10:39	1
2058140	99	52	42,7	cyclictest	37	-21	kcompactd0	10:00:06	1
2058140	99	52	42,7	cyclictest	37	-21	kcompactd0	10:00:06	1
2058139	99	52	46,4	cyclictest	2163390	-21	kworker/u4:7+events_unbound	10:35:01	0
2058139	99	52	45,5	cyclictest	2196556	-21	ssh	11:10:01	0
2058140	99	51	38,9	cyclictest	1073	-21	snmpd	12:39:36	1
2058139	99	51	45,4	cyclictest	2104859	-21	kworker/u4:12+events_unbound	09:40:01	0
2058139	99	51	44,5	cyclictest	2232317	-21	latency_hist	11:50:01	0
2058139	99	51	44,5	cyclictest	2232317	-21	latency_hist	11:50:01	0
2058139	99	51	44,5	cyclictest	2219763	-21	kernelversion	11:35:25	0
2058139	99	51	44,5	cyclictest	2127799	-21	kworker/u4:12+events_unbound	09:54:50	0
2058139	99	51	44,5	cyclictest	2069924	-21	aten_r7power_vo	07:55:18	0
2058139	99	51	43,6	cyclictest	2123205	-21	kworker/u4:2+events_unbound	09:59:52	0
2058139	99	51	32,17	cyclictest	2062379	-21	fschecks_count	07:25:21	0
2058140	99	50	43,4	cyclictest	2118618	-21	kworker/u4:3+events_unbound	10:20:02	1
2058140	99	50	41,6	cyclictest	2104861	-21	kworker/u4:14-rpciod	09:35:24	1
2058140	99	50	40,8	cyclictest	2072163	-21	systemd	08:04:28	1
2058139	99	50	42,6	cyclictest	2234700	-21	kworker/u4:2+events_unbound	11:55:18	0
2058139	99	50	42,5	cyclictest	0	-21	swapper/0	09:20:39	0
2058139	99	50	41,7	cyclictest	2117326	-21	proc_pri	09:40:37	0
2058139	99	50	30,18	cyclictest	2071410	-21	fschecks_time	08:00:21	0
2058140	99	49	43,4	cyclictest	2196574	-21	cat	11:10:01	1
2058140	99	49	42,5	cyclictest	2259571	-21	/usr/sbin/munin	12:20:16	1
2058140	99	49	42,5	cyclictest	2251163	-21	ldconfig	12:10:29	1
2058140	99	49	42,5	cyclictest	2120953	-21	aten_r7power_cu	09:45:16	1
2058140	99	49	42,5	cyclictest	2108491	-21	awk	09:30:41	1
2058140	99	49	42,5	cyclictest	2082464	-21	kworker/u4:5+events_unbound	08:44:37	1
2058140	99	49	42,5	cyclictest	2080200	-21	df_abs	08:35:19	1
2058140	99	49	41,6	cyclictest	2242672	-21	timerwakeupswit	12:00:40	1
2058140	99	49	41,6	cyclictest	2098516	-21	/usr/sbin/munin	09:20:18	1
2058140	99	49	39,6	cyclictest	2223620	-21	dpkg	11:40:14	1
2058139	99	49	43,4	cyclictest	2242265	-21	ntp_kernel_pll_	12:00:31	0
2058139	99	49	42,5	cyclictest	2089467	-21	cpu	09:10:17	0
2058139	99	49	41,5	cyclictest	2257497	-21	kworker/u4:8+events_unbound	12:25:23	0
2058139	99	49	40,7	cyclictest	2246460	-21	gltestperf	12:05:21	0
2058139	99	49	39,7	cyclictest	0	-21	swapper/0	12:15:22	0
2058139	99	49	38,9	cyclictest	378	-21	dbus-daemon	11:15:06	0
2058139	99	49	30,17	cyclictest	2063650	-21	fschecks_count	07:30:21	0
2058139	99	49	27,20	cyclictest	2066302	-21	fschecks_time	07:40:21	0
2058140	99	48	41,5	cyclictest	2255475	-21	awk	12:15:22	1
2058140	99	48	41,5	cyclictest	2212690	-21	kworker/u4:3+events_unbound	11:33:45	1
2058140	99	48	41,5	cyclictest	2070592	-21	switchtime	07:55:42	1
2058140	99	48	39,6	cyclictest	2161419	-21	fschecks_count	10:30:20	1
2058140	99	48	39,6	cyclictest	2088967	-21	diskmemload	10:20:32	1
2058140	99	48	38,6	cyclictest	0	-21	swapper/1	09:50:32	1
2058139	99	48	40,5	cyclictest	2121076	-21	grep	09:45:19	0
2058139	99	48	38,7	cyclictest	2167140	-21	ssh	10:36:09	0
2058139	99	48	26,19	cyclictest	2103968	-21	switchtime	09:25:40	0
2058140	99	47	39,6	cyclictest	2116734	-21	fschecks_count	09:40:20	1
2058140	99	47	36,8	cyclictest	2065061	-21	gltestperf	07:35:22	1
2058140	99	47	34,10	cyclictest	0	-21	swapper/1	11:55:32	1
2058139	99	47	37,8	cyclictest	2061963	-21	cron	07:25:00	0
2058140	99	46	40,4	cyclictest	0	-21	swapper/1	09:19:43	1
2058140	99	46	36,7	cyclictest	2074717	-21	modprobe	08:15:00	1
2058139	99	46	38,6	cyclictest	2059883	-21	fschecks_time	07:15:21	0
2058139	99	46	37,7	cyclictest	400	-21	systemd-logind	12:20:23	0
2058139	99	46	37,7	cyclictest	2143652	-21	fschecks_time	10:10:21	0
2058139	99	46	29,14	cyclictest	2141399	-21	kworker/u4:11-rpciod	10:10:01	0
2058140	99	45	36,6	cyclictest	0	-21	swapper/1	10:50:33	1
2058140	99	45	36,6	cyclictest	0	-21	swapper/1	10:50:33	1
2058140	99	45	34,8	cyclictest	2174620	-21	aten_r7power_vo	10:45:15	1
2058139	99	45	38,5	cyclictest	2068350	-21	apt	07:50:00	0
2058139	99	45	37,5	cyclictest	2074718	-21	kworker/u4:3	08:15:00	0
2058139	99	45	35,7	cyclictest	2058482	-21	df	07:10:19	0
2058140	99	44	38,4	cyclictest	2171092	-21	switchtime	10:40:38	1
2058140	99	44	38,4	cyclictest	2058579	-21	fschecks_count	07:10:21	1
2058140	99	44	37,5	cyclictest	2205458	-21	sendmail	11:20:00	1
2058140	99	44	37,5	cyclictest	2059754	-21	sshd	07:15:18	1
2058140	99	44	35,6	cyclictest	2156773	-21	aten_r7power_en	10:25:17	1
2058140	99	44	34,7	cyclictest	2075744	-21	timerandwakeup	08:15:38	1
2058140	99	44	20,9	cyclictest	2171840	-21	kworker/u4:16+events_unbound	11:00:13	1
2058139	99	44	37,5	cyclictest	2065817	-21	grep	07:40:01	0
2058139	99	44	37,5	cyclictest	2065751	-21	kworker/u4:15-rpciod	07:55:00	0
2058139	99	44	36,6	cyclictest	2079102	-21	gltestperf	08:30:23	0
2058139	99	44	36,5	cyclictest	2088121	-21	fschecks_count	09:05:18	0
2058139	99	44	35,7	cyclictest	2152336	-21	aten_r7power_vo	10:20:15	0
2058139	99	44	35,7	cyclictest	2085091	-21	kworker/u4:8-rpciod	08:55:21	0
2058140	99	43	35,5	cyclictest	2073530	-21	latency_hist	08:10:01	1
2058140	99	43	33,8	cyclictest	2079825	-21	cron	08:35:00	1
2058139	99	43	36,5	cyclictest	2212692	-21	kworker/u4:5+events_unbound	11:51:47	0
2058139	99	43	36,5	cyclictest	2087441	-21	timerandwakeup	09:00:45	0
2058139	99	43	23,17	cyclictest	2070858	-21	kworker/u4:7+rpciod	08:35:21	0
2058140	99	42	31,9	cyclictest	2084014	-21	dpkg	08:50:15	1
2058139	99	42	35,5	cyclictest	2082932	-21	fschecks_count	08:45:21	0
2058139	99	42	35,5	cyclictest	2077327	-21	latency_hist	08:25:01	0
2058139	99	42	31,8	cyclictest	0	-21	swapper/0	11:20:36	0
2058139	99	41	34,5	cyclictest	2065751	-21	kworker/u4:15-rpciod	08:05:40	0
2058140	99	40	32,6	cyclictest	2086987	-21	gltestperf	09:00:21	1
2058140	99	40	32,6	cyclictest	2085092	-21	kworker/u4:12-rpciod	08:55:39	1
2058140	99	40	30,8	cyclictest	2083366	-21	grep	08:45:38	1
2058140	99	39	29,7	cyclictest	0	-21	swapper/1	08:25:01	1
2058139	99	38	31,5	cyclictest	2077784	-21	fschecks_time	08:25:20	0
2058140	99	37	30,5	cyclictest	0	-21	swapper/1	07:30:18	1
2058140	99	37	30,5	cyclictest	0	-21	swapper/1	07:25:28	1
2058139	99	37	26,8	cyclictest	0	-21	swapper/0	08:40:23	0
2058140	99	36	23,10	cyclictest	378	-21	dbus-daemon	07:49:26	1
2058140	99	35	25,7	cyclictest	2066880	-21	timerwakeupswit	07:40:47	1
2058139	99	31	23,5	cyclictest	0	-21	swapper/0	07:10:01	0
2058140	99	27	19,6	cyclictest	0	-21	swapper/1	07:10:03	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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