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 May 19, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1846558	99	94	85,6	cyclictest	1968419	-21	kworker/u4:2+events_unbound	23:02:31	0
1846558	99	94	85,6	cyclictest	1968419	-21	kworker/u4:2+events_unbound	23:02:31	0
1846558	99	86	78,6	cyclictest	1955135	-21	kworker/u4:6+events_unbound	22:37:28	0
1846558	99	82	74,6	cyclictest	1892903	-21	kworker/u4:13+events_unbound	21:47:16	0
1846559	99	78	60,5	cyclictest	1847785	-21	kworker/u4:13+events_unbound	19:52:00	1
1846559	99	77	57,13	cyclictest	53	-21	kswapd0	22:05:06	1
1846559	99	77	57,13	cyclictest	53	-21	kswapd0	22:05:06	1
1846559	99	71	39,4	cyclictest	1900935	-21	ps	21:35:36	1
1846559	99	69	38,5	cyclictest	2002327	-21	wc	23:30:48	1
1846559	99	69	35,6	cyclictest	1862319	-21	sed	20:10:17	1
1846559	99	69	33,7	cyclictest	1864633	-21	sendmail	20:20:00	1
1846558	99	69	60,7	cyclictest	1851631	-21	kworker/u4:17+events_unbound	20:22:06	0
1846559	99	68	60,6	cyclictest	1842842	-21	kworker/u4:10+events_unbound	20:02:02	1
1846559	99	68	60,6	cyclictest	1842842	-21	kworker/u4:10+events_unbound	20:02:02	1
1846559	99	68	34,7	cyclictest	1932407	-21	unixbench_singl	22:10:39	1
1846558	99	66	58,6	cyclictest	1968421	-21	kworker/u4:5+events_unbound	22:52:31	0
1846559	99	64	55,7	cyclictest	1865862	-21	kworker/u4:8+events_unbound	21:05:00	1
1846559	99	62	56,4	cyclictest	2029006	-21	kworker/u4:14+events_unbound	00:02:41	1
1846559	99	62	54,6	cyclictest	1892903	-21	kworker/u4:13+events_unbound	21:27:13	1
1846559	99	61	2,53	cyclictest	1953918	-21	ssh	22:35:36	1
1846558	99	61	52,6	cyclictest	1868408	-21	kworker/u4:10+events_unbound	20:37:06	0
1846559	99	60	55,3	cyclictest	1867137	-21	kworker/u4:9+events_unbound	20:27:07	1
1846559	99	60	51,7	cyclictest	2051207	-21	sshd	00:27:44	1
1846559	99	60	51,6	cyclictest	1845283	-21	kworker/u4:3+events_unbound	19:11:56	1
1846559	99	60	49,8	cyclictest	1937903	-21	sd-accept	22:17:23	1
1846558	99	59	51,6	cyclictest	1915537	-21	kworker/u4:0+events_unbound	21:52:17	0
1846559	99	57	45,7	cyclictest	2039651	-21	kworker/u4:10	00:15:00	1
1846558	99	57	35,19	cyclictest	1940314	-21	fschecks_time	22:20:24	0
1846558	99	56	49,5	cyclictest	2036077	-21	/usr/sbin/munin	00:10:21	0
1846558	99	56	48,6	cyclictest	2022425	-21	idleruntime-cro	23:54:59	0
1846558	99	56	48,5	cyclictest	2058664	-21	vmstat	00:35:41	0
1846558	99	56	47,6	cyclictest	2035339	-21	kworker/u4:5	00:09:59	0
1846558	99	56	45,7	cyclictest	1891432	-21	fschecks_count	21:25:18	0
1846558	99	56	38,7	cyclictest	53	-21	kswapd0	23:25:08	0
1846558	99	55	48,5	cyclictest	1968421	-21	kworker/u4:5+events_unbound	23:07:31	0
1846558	99	55	47,6	cyclictest	2003249	-21	kworker/u4:0+events_unbound	23:42:37	0
1846558	99	55	47,5	cyclictest	1972863	-21	kworker/u4:8+events_unbound	23:15:02	0
1846558	99	55	44,8	cyclictest	2028330	-21	grep	00:00:41	0
1846558	99	55	27,26	cyclictest	15	1	ktimers/0	23:45:41	0
1846559	99	54	46,5	cyclictest	0	-21	swapper/1	22:25:15	1
1846559	99	54	45,6	cyclictest	2007647	-21	kworker/u4:8+events_unbound	23:37:36	1
1846559	99	54	42,9	cyclictest	1958324	-21	open_files	22:40:35	1
1846559	99	53	46,5	cyclictest	1877314	-21	unixbench_singl	21:05:39	1
1846559	99	53	45,5	cyclictest	1986158	-21	kworker/u4:1+events_unbound	23:21:00	1
1846558	99	53	45,6	cyclictest	1863197	-21	kworker/u4:6+events_unbound	20:15:00	0
1846558	99	53	33,17	cyclictest	1905515	-21	switchtime	21:40:36	0
1846559	99	52	42,8	cyclictest	1870978	-21	systemd	20:42:05	1
1846559	99	52	37,9	cyclictest	0	-21	swapper/1	22:45:37	1
1846558	99	52	44,6	cyclictest	1962347	-21	if_eth0	22:45:21	0
1846558	99	52	44,6	cyclictest	1886394	-21	latency_hist	21:20:01	0
1846558	99	52	40,9	cyclictest	0	-21	swapper/0	22:10:15	0
1846558	99	52	32,17	cyclictest	1927110	-21	sort	22:05:25	0
1846558	99	52	32,17	cyclictest	1927110	-21	sort	22:05:24	0
1846558	99	52	31,18	cyclictest	1849130	-21	lockfile-create	19:20:00	0
1846559	99	51	42,7	cyclictest	53	-21	kswapd0	21:55:18	1
1846559	99	51	41,8	cyclictest	1872250	-21	systemd	20:47:07	1
1846558	99	51	43,5	cyclictest	2037731	-21	kworker/u4:7+events_unbound	00:30:01	0
1846558	99	51	42,7	cyclictest	2033365	-21	kworker/u4:2+events_unbound	00:30:42	0
1846558	99	51	32,16	cyclictest	1955135	-21	kworker/u4:6-rpciod	22:40:34	0
1846558	99	51	28,20	cyclictest	1992734	-21	fschecks_time	23:20:21	0
1846559	99	50	44,4	cyclictest	1904509	-21	wget	21:40:14	1
1846559	99	50	43,5	cyclictest	1949755	-21	switchtime	22:30:43	1
1846559	99	50	40,8	cyclictest	2044744	-21	fschecks_time	00:20:24	1
1846558	99	50	43,5	cyclictest	2041219	-21	grep	00:15:41	0
1846558	99	50	43,5	cyclictest	2002491	-21	unixbench_singl	23:30:50	0
1846558	99	50	42,6	cyclictest	1868409	-21	kworker/u4:11+events_unbound	20:47:08	0
1846558	99	50	41,7	cyclictest	1915538	-21	kworker/u4:1+events_unbound	21:56:41	0
1846558	99	50	39,8	cyclictest	1861095	-21	fschecks_count	20:05:22	0
1846558	99	50	28,20	cyclictest	1900295	-21	fschecks_count	21:35:18	0
1846559	99	49	38,8	cyclictest	0	-21	swapper/1	23:55:09	1
1846559	99	49	36,10	cyclictest	0	-21	swapper/1	23:15:13	1
1846558	99	49	42,5	cyclictest	2006169	-21	diskmemload	23:35:31	0
1846558	99	49	38,8	cyclictest	1878885	-21	timerwakeupswit	21:10:39	0
1846558	99	49	27,18	cyclictest	1841627	-21	kworker/u4:2+rpciod	19:25:15	0
1846559	99	48	39,6	cyclictest	1878090	-21	fschecks_time	21:10:20	1
1846559	99	48	38,8	cyclictest	1868746	-21	aten_r7power_vo	20:35:17	1
1846558	99	48	40,6	cyclictest	1850361	-21	kworker/u4:16+events_unbound	20:02:43	0
1846558	99	48	40,6	cyclictest	1850361	-21	kworker/u4:16+events_unbound	20:02:43	0
1846558	99	48	39,6	cyclictest	1856731	-21	systemd	19:47:00	0
1846558	99	48	39,6	cyclictest	1847732	-21	unixbench_singl	19:10:39	0
1846558	99	48	29,16	cyclictest	0	-21	swapper/0	23:55:26	0
1846559	99	47	41,4	cyclictest	1909000	-21	aten_r7power_cu	21:45:18	1
1846559	99	47	40,5	cyclictest	1861168	-21	fschecks_time	20:05:23	1
1846559	99	47	39,6	cyclictest	2055319	-21	kworker/u4:4+events_unbound	00:37:48	1
1846559	99	47	36,8	cyclictest	1851856	-21	aten2__	19:30:16	1
1846558	99	47	39,6	cyclictest	1896048	-21	gltestperf	21:30:20	0
1846558	99	47	39,5	cyclictest	1890924	-21	date	21:25:01	0
1846558	99	47	37,7	cyclictest	1868409	-21	kworker/u4:11-rpciod	20:35:00	0
1846558	99	47	35,10	cyclictest	1970860	-21	fschecks_count	22:55:22	0
1846558	99	47	32,10	cyclictest	37	-21	kcompactd0	22:33:21	0
1846559	99	46	40,4	cyclictest	2031696	-21	fschecks_count	00:05:20	1
1846559	99	46	38,6	cyclictest	2012279	-21	systemd	23:42:35	1
1846559	99	46	38,6	cyclictest	1855689	-21	grep	19:45:17	1
1846559	99	46	38,5	cyclictest	1859048	-21	timerandwakeup	19:55:41	1
1846559	99	46	37,6	cyclictest	1846556	-21	cyclictest	22:20:12	1
1846559	99	46	36,8	cyclictest	1853307	-21	df_abs	19:35:23	1
1846559	99	46	35,8	cyclictest	2041066	-21	threads	00:15:39	1
1846558	99	46	39,5	cyclictest	1872642	-21	df_abs	20:50:16	0
1846558	99	46	34,9	cyclictest	53	-21	kswapd0	00:20:07	0
1846559	99	45	39,4	cyclictest	1997023	-21	df_abs	23:25:23	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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