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 highest latencies:

System rack7slot2.osadl.org (updated Sat Sep 19, 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
2037635	99	118	109,7	cyclictest	2115877	-21	kworker/u4:35+events_unbound	10:55:46	1
2037635	99	104	89,8	cyclictest	2115875	-21	kworker/u4:33+events_unbound	10:05:39	1
2037635	99	102	96,4	cyclictest	2051647	-21	kworker/u4:10+events_unbound	08:10:17	1
2037635	99	98	81,6	cyclictest	2041434	-21	kworker/u4:16+events_unbound	07:29:59	1
2037635	99	97	89,6	cyclictest	2199893	-21	kworker/u4:4+events_unbound	12:00:56	1
2037633	99	92	79,7	cyclictest	0	-21	swapper/0	09:00:26	0
2037635	99	91	68,13	cyclictest	2049080	-21	kworker/u4:5-xprtiod	08:40:14	1
2037635	99	88	81,5	cyclictest	2151105	-21	kworker/u4:0+events_unbound	10:45:46	1
2037635	99	87	77,8	cyclictest	2046539	-21	kworker/u4:2+events_unbound	07:55:13	1
2037635	99	85	68,8	cyclictest	2177411	-21	kworker/u4:5+events_unbound	11:34:45	1
2037635	99	81	75,5	cyclictest	2221835	-21	kworker/u4:9+events_unbound	12:10:57	1
2037633	99	75	53,19	cyclictest	53	-21	kswapd0	11:45:14	0
2037635	99	68	61,5	cyclictest	2221835	-21	kworker/u4:9+events_unbound	12:15:57	1
2037635	99	67	60,5	cyclictest	2037631	-21	cyclictest	09:56:50	1
2037633	99	65	55,7	cyclictest	53	-21	kswapd0	10:00:13	0
2037633	99	65	54,8	cyclictest	2198364	-21	mailstats	11:35:39	0
2037635	99	64	57,5	cyclictest	2003683	-21	kworker/u4:11+events_unbound	08:15:16	1
2037635	99	64	56,6	cyclictest	2172064	-21	unixbench_singl	11:05:40	1
2037635	99	64	56,6	cyclictest	2155591	-21	kworker/u4:10+events_unbound	10:50:47	1
2037633	99	64	54,7	cyclictest	2027594	-21	kworker/u4:13+events_unbound	07:14:55	0
2037635	99	60	53,5	cyclictest	2041435	-21	kworker/u4:17+events_unbound	08:55:01	1
2037633	99	60	9,28	cyclictest	0	-21	swapper/0	09:10:26	0
2037633	99	60	50,7	cyclictest	0	-21	swapper/0	12:35:43	0
2037633	99	60	50,7	cyclictest	0	-21	swapper/0	12:35:42	0
2037633	99	60	47,10	cyclictest	53	-21	kswapd0	10:55:10	0
2037635	99	59	52,5	cyclictest	2046539	-21	kworker/u4:2+events_unbound	07:50:07	1
2037635	99	59	47,6	cyclictest	2128656	-21	kworker/u4:10+events_unbound	10:17:01	1
2037635	99	59	44,7	cyclictest	2177411	-21	kworker/u4:5+events_unbound	11:25:38	1
2037635	99	59	42,6	cyclictest	2186406	-21	kworker/u4:2+events_unbound	11:23:46	1
2037635	99	58	51,5	cyclictest	2069436	-21	ntpq	09:10:30	1
2037635	99	58	51,5	cyclictest	2042706	-21	kworker/u4:20+events_unbound	07:35:00	1
2037635	99	57	50,5	cyclictest	2036358	-21	kworker/u4:4+events_unbound	07:19:58	1
2037635	99	57	41,7	cyclictest	2097613	-21	kworker/u4:4+events_unbound	10:00:17	1
2037633	99	57	24,20	cyclictest	0	-21	swapper/0	11:30:31	0
2037633	99	57	23,20	cyclictest	0	-21	swapper/0	12:05:23	0
2037633	99	56	44,9	cyclictest	0	-21	swapper/0	09:55:36	0
2037633	99	56	43,9	cyclictest	2154027	-21	/usr/sbin/munin	10:45:38	0
2037633	99	56	35,13	cyclictest	2211308	-21	ntpq	11:50:30	0
2037635	99	55	48,5	cyclictest	2230898	-21	kworker/u4:18+events_unbound	12:35:01	1
2037635	99	55	48,5	cyclictest	2211689	-21	xargs	11:50:42	1
2037633	99	54	7,21	cyclictest	2118518	-21	ntpq	10:05:28	0
2037633	99	54	31,19	cyclictest	2060606	-21	apt-get	08:40:09	0
2037635	99	53	46,5	cyclictest	2115875	-21	kworker/u4:33+events_unbound	10:20:04	1
2037635	99	53	34,7	cyclictest	2137635	-21	kworker/u4:5+events_unbound	10:34:49	1
2037633	99	53	45,5	cyclictest	2091891	-21	proc_pri	09:35:38	0
2037633	99	53	44,7	cyclictest	2058031	-21	kworker/u4:7+events_unbound	08:35:21	0
2037633	99	53	44,7	cyclictest	2058031	-21	kworker/u4:7+events_unbound	08:35:21	0
2037633	99	53	43,7	cyclictest	2090777	-21	latency_hist	09:35:03	0
2037633	99	53	32,18	cyclictest	0	-21	swapper/0	10:10:40	0
2037635	99	52	6,35	cyclictest	2144283	-21	ssh	10:35:16	1
2037635	99	52	5,33	cyclictest	2198182	-21	ssh	11:35:36	1
2037635	99	52	44,6	cyclictest	2180639	-21	ssh	11:15:39	1
2037635	99	52	42,7	cyclictest	2230893	-21	kworker/u4:13+rpciod	12:25:16	1
2037635	99	52	40,6	cyclictest	2040135	-21	kworker/u4:12+events_unbound	07:45:39	1
2037635	99	52	37,10	cyclictest	2068361	-21	diskmemload	11:58:26	1
2037633	99	52	43,6	cyclictest	2096264	-21	sshd	09:40:34	0
2037633	99	52	30,18	cyclictest	2237789	-21	gltestperf	12:20:21	0
2037633	99	52	19,17	cyclictest	0	-21	swapper/0	12:00:22	0
2037635	99	51	44,5	cyclictest	2091886	-21	proc_pri	09:35:38	1
2037635	99	51	44,5	cyclictest	2080186	-21	kworker/u4:6+events_unbound	09:28:46	1
2037635	99	51	43,6	cyclictest	2059899	-21	gltestperf	08:35:21	1
2037635	99	51	43,6	cyclictest	2059899	-21	gltestperf	08:35:20	1
2037635	99	51	43,6	cyclictest	2026234	-21	kworker/u4:0+events_unbound	09:17:00	1
2037635	99	51	43,6	cyclictest	0	-21	swapper/1	09:50:36	1
2037633	99	51	4,11	cyclictest	2180448	-21	ntpq	11:15:34	0
2037633	99	51	17,18	cyclictest	0	-21	swapper/0	12:10:35	0
2037633	99	51	1,24	cyclictest	2105481	-21	/usr/sbin/munin	09:50:38	0
2037635	99	50	37,8	cyclictest	2026234	-21	kworker/u4:0+events_unbound	09:20:23	1
2037633	99	50	5,17	cyclictest	2058777	-21	ntpq	08:30:23	0
2037633	99	50	41,6	cyclictest	2145165	-21	/usr/sbin/munin	10:35:38	0
2037633	99	50	37,10	cyclictest	2242157	-21	fschecks_count	12:25:20	0
2037633	99	50	10,17	cyclictest	15	1	ktimers/0	09:15:32	0
2037635	99	49	40,7	cyclictest	2041274	-21	timerwakeupswit	07:20:45	1
2037635	99	49	36,10	cyclictest	2228125	-21	idleruntime-cro	12:10:00	1
2037635	99	49	31,7	cyclictest	2177405	-21	kworker/u4:0+events_unbound	11:47:11	1
2037633	99	49	8,29	cyclictest	2037610	-21	munin-run	07:10:01	0
2037633	99	49	43,4	cyclictest	0	-21	swapper/0	08:45:26	0
2037633	99	49	4,25	cyclictest	0	-21	swapper/0	12:30:29	0
2037633	99	49	40,7	cyclictest	2137634	-21	kworker/u4:4+events_unbound	10:30:42	0
2037633	99	49	40,4	cyclictest	2233672	-21	ssh	12:15:33	0
2037633	99	49	32,15	cyclictest	2026234	-21	kworker/u4:0+rpciod	08:05:00	0
2037633	99	49	26,7	cyclictest	0	-21	swapper/0	10:20:21	0
2037633	99	49	24,4	cyclictest	15	1	ktimers/0	09:25:33	0
2037633	99	49	2,39	cyclictest	2068361	-21	diskmemload	10:25:28	0
2037633	99	49	10,18	cyclictest	15	1	ktimers/0	11:25:29	0
2037635	99	48	41,5	cyclictest	2123107	-21	gcc	10:10:39	1
2037635	99	48	39,7	cyclictest	2155590	-21	kworker/u4:9+events_unbound	11:00:03	1
2037635	99	48	39,7	cyclictest	2155590	-21	kworker/u4:9+events_unbound	11:00:03	1
2037635	99	48	33,12	cyclictest	0	-21	swapper/1	10:40:30	1
2037633	99	48	39,7	cyclictest	2184442	-21	fschecks_time	11:20:21	0
2037633	99	48	38,8	cyclictest	507	-21	ntpd	10:54:10	0
2037633	99	48	25,15	cyclictest	15	1	ktimers/0	11:00:29	0
2037633	99	48	25,15	cyclictest	15	1	ktimers/0	11:00:29	0
2037633	99	48	2,22	cyclictest	0	-21	swapper/0	10:15:39	0
2037633	99	48	20,23	cyclictest	256	50	irq/23-42890000.ethernet	09:45:37	0
2037635	99	47	41,4	cyclictest	2062388	-21	fschecks_count	08:45:20	1
2037635	99	47	39,6	cyclictest	2251928	-21	timerwakeupswit	12:35:46	1
2037635	99	47	39,6	cyclictest	2251928	-21	timerwakeupswit	12:35:46	1
2037635	99	47	36,9	cyclictest	0	-21	swapper/1	11:10:28	1
2037633	99	47	41,4	cyclictest	2041494	-21	latency_hist	07:25:02	0
2037633	99	47	38,6	cyclictest	2078822	-21	unixbench-2d	09:20:42	0
2037633	99	47	37,5	cyclictest	2051647	-21	kworker/u4:10-rpciod	08:55:38	0
2037633	99	47	21,21	cyclictest	2149551	-21	ntpq	10:40:38	0
2037633	99	47	18,6	cyclictest	256	50	irq/23-42890000.ethernet	11:40:25	0
2037635	99	46	37,6	cyclictest	0	-21	swapper/1	08:30:20	1
2037635	99	46	36,7	cyclictest	2230898	-21	kworker/u4:18-rpciod	12:20:18	1
2037635	99	46	32,10	cyclictest	53	-21	kswapd0	09:40:33	1
2037633	99	46	37,6	cyclictest	0	-21	swapper/0	08:25:18	0
2037633	99	46	36,8	cyclictest	2039135	-21	aten_r7power_en	07:15:15	0
2037633	99	46	36,7	cyclictest	2215736	-21	ntp_kernel_pll_	11:55:29	0
2037633	99	46	35,8	cyclictest	2174868	-21	sh	11:10:00	0
2037635	99	45	37,5	cyclictest	2056981	-21	aten2__	08:25:15	1
2037633	99	45	32,9	cyclictest	2068083	-21	sort	09:05:38	0
2037633	99	45	22,3	cyclictest	256	50	irq/23-42890000.ethernet	08:00:01	0
2037635	99	44	38,4	cyclictest	2051674	-21	sh	08:05:01	1
2037635	99	44	37,5	cyclictest	2099960	-21	aten_r7power_en	09:45:16	1
2037635	99	44	37,5	cyclictest	2084699	-21	kworker/u4:12+events_unbound	09:30:03	1
2037635	99	44	36,6	cyclictest	2135707	-21	df_abs	10:25:19	1
2037635	99	44	34,8	cyclictest	2203096	-21	unixbench_singl	11:40:41	1
2037633	99	44	9,6	cyclictest	2041635	-21	apt-get	07:25:13	0
2037633	99	44	7,13	cyclictest	2047336	-21	ntpq	07:45:29	0
2037633	99	44	6,11	cyclictest	2064084	-21	ntpq	08:50:34	0
2037633	99	44	36,5	cyclictest	2176187	-21	mailstats	11:10:40	0
2037633	99	44	13,10	cyclictest	2043608	-21	proc_pri	07:30:35	0
2037633	99	43	6,11	cyclictest	2046007	-21	ntpq	07:40:24	0
2037633	99	43	35,6	cyclictest	2056789	-21	apt	08:25:01	0
2037633	99	43	34,7	cyclictest	2051970	-21	aten_r7power_vo	08:05:17	0
2037633	99	43	22,8	cyclictest	2045292	-21	sendmail	07:40:00	0
2037633	99	43	11,11	cyclictest	0	-21	swapper/0	08:20:00	0
2037635	99	42	32,7	cyclictest	2037717	-21	latency_hist	07:10:02	1
2037633	99	42	20,4	cyclictest	14	-21	ksoftirqd/0	08:10:30	0
2037635	99	41	34,5	cyclictest	2003683	-21	kworker/u4:11+events_unbound	07:14:57	1
2037635	99	41	33,5	cyclictest	0	-21	swapper/1	08:20:31	1
2037635	99	41	31,8	cyclictest	2066133	-21	cpu	09:00:15	1
2037635	99	41	31,6	cyclictest	0	-21	swapper/1	08:05:19	1
2037635	99	40	30,6	cyclictest	2041435	-21	kworker/u4:17+rpciod	08:55:39	1
2037635	99	39	32,5	cyclictest	2045251	-21	cron	07:39:59	1
2037635	99	39	31,6	cyclictest	0	-21	swapper/1	09:05:27	1
2037633	99	39	29,7	cyclictest	2048092	-21	aten_r7power_po	07:50:18	0
2037635	99	38	29,6	cyclictest	0	-21	swapper/1	07:40:19	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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