OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Tue Sep 08, 2026 00:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1957797	2	76	0,4	chrt	0	-21	swapper/0	23:04:25	0
1876025	2	72	0,3	chrt	75	-21	kworker/3:1+events	21:44:16	3
1881924	2	55	0,2	chrt	0	-21	swapper/2	21:49:17	2
1722583	99	46	37,6	cyclictest	1778958	-21	latency_hist	20:05:00	0
1722583	99	42	35,5	cyclictest	1973546	-21	kworker/u8:0+flush-8:0	00:00:01	0
1722588	99	41	37,3	cyclictest	1698025	-21	kworker/u8:4+events_unbound	19:14:14	1
1722588	99	40	35,4	cyclictest	1833946	-21	kworker/u8:2+flush-8:0	21:39:28	1
1722588	99	40	34,5	cyclictest	1764083	-21	kworker/u8:0+events_unbound	20:09:12	1
1722588	99	40	34,5	cyclictest	1764083	-21	kworker/u8:0+events_unbound	20:09:12	1
1722583	99	40	34,4	cyclictest	1833946	-21	kworker/u8:2+flush-8:0	21:19:11	0
1722583	99	40	29,9	cyclictest	278	-21	systemd-journal	19:55:00	0
2012898	2	39	0,5	sleep2	37	1	rcuc/2	00:00:00	2
1722583	99	39	32,5	cyclictest	1923480	-21	kworker/u8:1+flush-8:0	22:50:00	0
1717991	2	39	4,10	sleep1	0	-21	swapper/1	19:07:48	1
1722590	99	38	34,3	cyclictest	1873212	-21	kworker/u8:0+events_unbound	21:44:30	2
1722583	99	38	31,5	cyclictest	1779500	-21	/usr/sbin/munin	20:09:24	0
1722583	99	38	31,5	cyclictest	1779500	-21	/usr/sbin/munin	20:09:23	0
1722583	99	38	28,8	cyclictest	278	-21	systemd-journal	00:00:00	0
1722583	99	38	28,8	cyclictest	1726916	-21	ntpq	19:14:20	0
1722583	99	37	14,16	cyclictest	1764083	-21	kworker/u8:0+flush-8:0	20:29:13	0
1891800	2	35	0,1	sleep1	0	-21	swapper/1	21:59:16	1
1722590	99	35	30,4	cyclictest	1878218	-21	kworker/u8:2+flush-8:0	22:24:20	2
1722588	99	35	30,3	cyclictest	1973546	-21	kworker/u8:0+flush-8:0	23:55:00	1
1722588	99	35	28,5	cyclictest	1973145	-21	cron	23:20:00	1
1722583	99	35	29,5	cyclictest	1698025	-21	kworker/u8:4+flush-8:0	19:59:13	0
1722583	99	35	29,4	cyclictest	1838477	-21	unixbench_multi	21:04:24	0
1722583	99	35	29,4	cyclictest	1838477	-21	unixbench_multi	21:04:24	0
1722583	99	35	28,5	cyclictest	1818803	-21	cron	20:45:00	0
1722583	99	35	25,8	cyclictest	278	-21	systemd-journal	19:34:09	0
1722590	99	34	29,4	cyclictest	1698025	-21	kworker/u8:4+flush-8:0	20:04:26	2
1722590	99	34	28,4	cyclictest	1973546	-21	kworker/u8:0+flush-8:0	23:29:24	2
1722588	99	34	30,3	cyclictest	1803960	-21	kworker/u8:2+flush-8:0	20:34:14	1
1722588	99	34	29,4	cyclictest	1764083	-21	kworker/u8:0+flush-8:0	20:25:01	1
1722588	99	34	29,3	cyclictest	2042732	-21	ls	00:30:00	1
1722588	99	34	26,6	cyclictest	278	-21	systemd-journal	21:14:09	1
1722588	99	34	26,6	cyclictest	1913935	-21	apt-get	22:24:06	1
1722588	99	34	25,7	cyclictest	2018554	-21	apt-get	00:09:05	1
1722588	99	34	23,8	cyclictest	278	-21	systemd-journal	20:45:01	1
1722583	99	34	28,4	cyclictest	1908019	-21	grep	22:14:26	0
1722583	99	34	25,7	cyclictest	1912756	-21	ntpq	22:19:22	0
1722583	99	34	24,8	cyclictest	1952564	-21	ntpq	22:59:26	0
1722588	99	33	29,3	cyclictest	1947414	-21	kworker/u8:0+events_unbound	22:59:30	1
1722588	99	33	29,2	cyclictest	2024102	-21	irqcore	00:14:12	1
1722588	99	33	28,3	cyclictest	2009101	-21	irqrtprio	23:59:18	1
1722588	99	33	28,3	cyclictest	1813823	-21	cron	20:40:00	1
1722588	99	33	27,4	cyclictest	2013569	-21	/usr/sbin/munin	00:04:23	1
1722588	99	33	22,9	cyclictest	278	-21	systemd-journal	20:20:00	1
1722583	99	33	26,5	cyclictest	1854018	-21	apt-get	21:24:06	0
1722590	99	32	27,4	cyclictest	1698025	-21	kworker/u8:4+flush-8:0	19:50:10	2
1722588	99	32	27,4	cyclictest	1973546	-21	kworker/u8:0+flush-8:0	23:39:23	1
1722583	99	32	28,3	cyclictest	1858408	-21	kworker/u8:1+events_unbound	21:49:29	0
1722583	99	32	27,4	cyclictest	1908653	-21	kworker/u8:0+flush-8:0	22:24:08	0
1722583	99	32	27,3	cyclictest	1967506	-21	needreboot	23:14:18	0
1722583	99	32	24,6	cyclictest	1759690	-21	/usr/sbin/munin	19:49:21	0
1722583	99	32	23,7	cyclictest	1843578	-21	latency_hist	21:10:01	0
1722583	99	32	1,29	cyclictest	1799028	-21	munin-run	20:25:01	0
1722583	99	32	1,28	cyclictest	1844156	-21	sshd	21:14:09	0
1722590	99	31	26,4	cyclictest	1858408	-21	kworker/u8:1+flush-8:0	21:59:13	2
1722588	99	31	27,3	cyclictest	1962954	-21	kworker/u8:1+events_unbound	23:14:09	1
1722588	99	31	27,3	cyclictest	1833946	-21	kworker/u8:2+flush-8:0	21:29:11	1
1722588	99	31	25,4	cyclictest	1698025	-21	kworker/u8:4+events_unbound	21:24:16	1
1722583	99	31	26,4	cyclictest	1878218	-21	kworker/u8:2+flush-8:0	22:05:00	0
1722583	99	31	26,3	cyclictest	1832982	-21	needreboot	20:59:16	0
1722583	99	31	26,3	cyclictest	1759141	-21	cron	19:45:00	0
1722583	99	31	25,4	cyclictest	1734208	-21	unixbench_multi	19:19:27	0
1722590	99	30	25,4	cyclictest	1764083	-21	kworker/u8:0+flush-8:0	20:29:17	2
1722590	99	30	25,4	cyclictest	1749236	-21	kworker/u8:1+events_unbound	19:39:14	2
1722590	99	30	24,5	cyclictest	1784391	-21	kworker/u8:1+flush-8:0	20:19:26	2
1722588	99	30	26,2	cyclictest	1948004	-21	systemctl	22:55:00	1
1722588	99	30	25,4	cyclictest	1878218	-21	kworker/u8:2+events_unbound	22:04:09	1
1722588	99	30	25,3	cyclictest	1943025	-21	idleruntime-cro	22:50:00	1
1722588	99	30	24,5	cyclictest	1769036	-21	cron	19:55:00	1
1722588	99	30	23,6	cyclictest	1858408	-21	kworker/u8:1+flush-8:0	21:44:26	1
1722588	99	30	18,5	cyclictest	1893007	-21	kworker/u8:3+flush-8:0	22:29:10	1
1722583	99	30	27,2	cyclictest	1924007	-21	cpuspeed_turbos	22:34:10	0
1722583	99	30	26,3	cyclictest	1764083	-21	kworker/u8:0+flush-8:0	20:46:41	0
1722583	99	30	26,2	cyclictest	2018265	-21	kworker/u8:1+events_unbound	00:19:27	0
1722583	99	30	24,5	cyclictest	1878218	-21	kworker/u8:2+flush-8:0	23:20:01	0
1722583	99	30	24,4	cyclictest	1878196	-21	cron	21:45:00	0
1722583	99	30	20,7	cyclictest	2037127	-21	ntpq	00:24:19	0
1722590	99	29	24,4	cyclictest	2007834	-21	kworker/u8:3+events_unbound	00:04:28	2
1722590	99	29	23,4	cyclictest	1973546	-21	kworker/u8:0+flush-8:0	00:20:06	2
1722590	99	29	23,4	cyclictest	1722712	-21	kworker/u8:2+events_unbound	19:34:22	2
1722588	99	29	24,4	cyclictest	1749236	-21	kworker/u8:1+events_unbound	19:49:07	1
1722588	99	29	24,4	cyclictest	1698025	-21	kworker/u8:4+events_unbound	20:04:11	1
1722588	99	29	23,4	cyclictest	1913343	-21	cron	22:20:00	1
1722588	99	29	23,4	cyclictest	1823645	-21	unixbench_multi	20:49:26	1
1722588	99	29	22,5	cyclictest	1938090	-21	turbostat.cron	22:45:00	1
1722588	99	29	22,5	cyclictest	1803935	-21	sh	20:30:00	1
1722588	99	29	22,5	cyclictest	1744798	-21	apt-get	19:34:06	1
1722588	99	29	20,6	cyclictest	278	-21	systemd-journal	00:38:10	1
1722583	99	29	25,3	cyclictest	1923480	-21	kworker/u8:1+events_unbound	22:54:10	0
1722583	99	29	24,3	cyclictest	1873212	-21	kworker/u8:0+flush-8:0	21:54:16	0
1722583	99	29	23,4	cyclictest	1810208	-21	irqrtprio	20:39:13	0
1722583	99	29	22,5	cyclictest	1871025	-21	kthreadcore	21:39:19	0
1722590	99	28	23,3	cyclictest	1932959	-21	unixbench_multi	22:39:26	2
1722590	99	28	23,3	cyclictest	1893014	-21	kworker/u8:4+events_unbound	22:04:23	2
1722590	99	28	22,4	cyclictest	1698025	-21	kworker/u8:4+events_unbound	19:24:19	2
1722588	99	28	25,2	cyclictest	1997951	-21	cron	23:45:00	1
1722588	99	28	25,2	cyclictest	1740451	-21	irqcore	19:29:13	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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