OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Mon Jul 06, 2026 00:44:19)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1912754	2	372	0,2	sleep3	45	1	irq_work/3	20:30:16	3
1912754	2	372	0,2	sleep3	45	1	irq_work/3	20:30:15	3
2123363	2	199	0,3	sleep3	75	-21	kworker/3:1+events	00:00:16	3
1994849	2	191	0,4	sleep3	48	1	ktimers/3	21:50:18	3
1829507	99	68	57,8	cyclictest	1838632	-21	kworker/u8:0+flush-8:0	19:25:27	1
1829502	99	67	59,6	cyclictest	1961787	-21	kworker/u8:1+events_unbound	22:25:23	0
1829512	99	64	55,6	cyclictest	1704890	-21	systemd-journal	23:40:01	2
1829502	99	64	57,5	cyclictest	2056942	-21	kworker/u8:2+flush-8:0	23:30:23	0
1829507	99	63	53,7	cyclictest	1876307	-21	latency_hist	19:55:00	1
1829502	99	61	56,4	cyclictest	1936653	-21	kworker/u8:3+flush-8:0	21:05:27	0
1829502	99	61	55,4	cyclictest	1961787	-21	kworker/u8:1+flush-8:0	23:35:26	0
1829502	99	60	49,9	cyclictest	2045814	-21	ntpq	22:40:18	0
1829507	99	59	48,8	cyclictest	2090633	-21	ntpq	23:25:23	1
1829502	99	59	54,4	cyclictest	1819629	-21	kworker/u8:1+flush-8:0	20:20:21	0
1829502	99	59	54,4	cyclictest	1819629	-21	kworker/u8:1+flush-8:0	20:20:21	0
1829502	99	59	52,5	cyclictest	2035932	-21	kworker/u8:3+events_unbound	00:35:19	0
1829502	99	57	53,3	cyclictest	1896020	-21	kworker/u8:0+events_unbound	20:15:15	0
1829502	99	57	53,3	cyclictest	1896020	-21	kworker/u8:0+events_unbound	20:15:14	0
1829502	99	57	52,4	cyclictest	2035932	-21	kworker/u8:3+events_unbound	23:55:23	0
1829502	99	57	47,8	cyclictest	2110505	-21	ntpq	23:45:23	0
1829512	99	56	49,5	cyclictest	1819629	-21	kworker/u8:1+flush-8:0	19:30:24	2
1829507	99	56	51,4	cyclictest	2130368	-21	kworker/u8:4+flush-8:0	00:30:11	1
1829502	99	56	49,5	cyclictest	1838632	-21	kworker/u8:0+flush-8:0	19:20:00	0
1829502	99	55	51,3	cyclictest	1906573	-21	kworker/u8:3+flush-8:0	20:35:25	0
1829502	99	55	49,4	cyclictest	2035932	-21	kworker/u8:3+flush-8:0	23:50:22	0
1829502	99	55	48,5	cyclictest	1936653	-21	kworker/u8:3+flush-8:0	20:55:24	0
1829502	99	54	49,3	cyclictest	1961787	-21	kworker/u8:1+events_unbound	22:20:15	0
1829502	99	54	47,5	cyclictest	1952520	-21	kworker/u8:2+flush-8:0	21:35:22	0
1829507	99	53	44,7	cyclictest	1901372	-21	apt-get	20:20:01	1
1829507	99	53	44,7	cyclictest	1901372	-21	apt-get	20:20:00	1
1829502	99	53	48,4	cyclictest	1982074	-21	kworker/u8:3+events_unbound	22:00:09	0
1829502	99	53	47,5	cyclictest	2035932	-21	kworker/u8:3+flush-8:0	23:05:24	0
1829512	99	52	42,7	cyclictest	1704890	-21	systemd-journal	19:55:13	2
1829507	99	52	38,10	cyclictest	1704890	-21	systemd-journal	21:21:13	1
1829502	99	52	48,3	cyclictest	1952520	-21	kworker/u8:2+flush-8:0	21:45:20	0
1829502	99	52	46,5	cyclictest	2003326	-21	kworker/u8:2+flush-8:0	22:35:20	0
1829502	99	52	45,5	cyclictest	1952520	-21	kworker/u8:2+flush-8:0	21:40:22	0
1829502	99	52	43,6	cyclictest	1866448	-21	latency_hist	19:45:01	0
1829502	99	52	42,7	cyclictest	1961787	-21	kworker/u8:1+flush-8:0	23:20:19	0
1829502	99	52	42,7	cyclictest	1961787	-21	kworker/u8:1+flush-8:0	23:20:19	0
1829502	99	52	42,7	cyclictest	1704890	-21	systemd-journal	19:32:14	0
1829507	99	51	41,7	cyclictest	1704890	-21	systemd-journal	00:05:13	1
1829502	99	51	46,3	cyclictest	1952520	-21	kworker/u8:2+flush-8:0	21:10:25	0
1829502	99	51	46,3	cyclictest	1896020	-21	kworker/u8:0+events_unbound	21:15:08	0
1829502	99	50	45,3	cyclictest	2035932	-21	kworker/u8:3+events_unbound	23:45:02	0
1829502	99	50	44,4	cyclictest	1982074	-21	kworker/u8:3+flush-8:0	21:55:26	0
1829502	99	50	43,4	cyclictest	993089	-21	kworker/u8:4+events_unbound	19:55:26	0
1913220	2	49	0,4	sleep0	0	-21	swapper/0	20:30:17	0
1913220	2	49	0,4	sleep0	0	-21	swapper/0	20:30:16	0
1829507	99	49	43,4	cyclictest	1991993	-21	apt-get	21:50:01	1
1829507	99	49	41,6	cyclictest	1972100	-21	latency_hist	21:30:02	1
1829507	99	49	41,5	cyclictest	1704890	-21	systemd-journal	23:20:01	1
1829507	99	49	41,5	cyclictest	1704890	-21	systemd-journal	23:20:00	1
1829507	99	49	39,7	cyclictest	2121315	-21	/usr/sbin/munin	00:00:00	1
1829502	99	49	43,4	cyclictest	993089	-21	kworker/u8:4+events_unbound	19:45:26	0
1829502	99	49	43,4	cyclictest	2003326	-21	kworker/u8:2+flush-8:0	22:05:22	0
1829502	99	49	43,4	cyclictest	1961787	-21	kworker/u8:1+flush-8:0	22:10:19	0
1829502	99	49	40,6	cyclictest	1834414	-21	apt-get	19:15:01	0
1829502	99	48	43,3	cyclictest	1896020	-21	kworker/u8:0+flush-8:0	20:25:19	0
1829502	99	48	43,3	cyclictest	1896020	-21	kworker/u8:0+flush-8:0	20:25:18	0
1829502	99	48	42,3	cyclictest	2035932	-21	kworker/u8:3+events_unbound	00:10:17	0
1829502	99	48	41,5	cyclictest	1936042	-21	ntpq	20:50:20	0
1829502	99	48	41,5	cyclictest	1936042	-21	ntpq	20:50:20	0
1829502	99	48	41,5	cyclictest	1819629	-21	kworker/u8:1+flush-8:0	19:50:18	0
1829512	99	47	41,4	cyclictest	1896020	-21	kworker/u8:0+flush-8:0	20:15:13	2
1829512	99	47	41,4	cyclictest	1896020	-21	kworker/u8:0+flush-8:0	20:15:13	2
1829507	99	47	38,7	cyclictest	2056942	-21	kworker/u8:2+flush-8:0	23:40:28	1
1829507	99	47	37,8	cyclictest	1704890	-21	systemd-journal	21:35:14	1
1829502	99	47	44,2	cyclictest	1961787	-21	kworker/u8:1+events_unbound	23:15:27	0
1829502	99	47	41,4	cyclictest	2035932	-21	kworker/u8:3+flush-8:0	00:30:28	0
1829502	99	47	39,7	cyclictest	2035932	-21	kworker/u8:3+flush-8:0	23:00:27	0
1829502	99	47	38,6	cyclictest	1961787	-21	kworker/u8:1+flush-8:0	21:25:29	0
1829512	99	46	40,4	cyclictest	2035932	-21	kworker/u8:3+flush-8:0	00:35:24	2
1829512	99	46	39,5	cyclictest	1704890	-21	systemd-journal	20:10:00	2
1829512	99	46	38,6	cyclictest	1704890	-21	systemd-journal	19:30:00	2
1829507	99	46	38,6	cyclictest	2041799	-21	latency_hist	22:40:01	1
1829502	99	46	40,4	cyclictest	1936653	-21	kworker/u8:3+events_unbound	21:20:16	0
1829512	99	45	35,7	cyclictest	1704890	-21	systemd-journal	20:43:14	2
1829512	99	45	35,7	cyclictest	1704890	-21	systemd-journal	20:43:13	2
1829507	99	45	39,4	cyclictest	1922197	-21	apt-get	20:40:08	1
1829507	99	45	39,4	cyclictest	1922197	-21	apt-get	20:40:08	1
1829512	99	44	37,5	cyclictest	2035932	-21	kworker/u8:3+events_unbound	23:55:13	2
1829507	99	44	36,6	cyclictest	1861496	-21	latency_hist	19:40:00	1
1829507	99	44	36,6	cyclictest	1834414	-21	apt-get	19:15:03	1
1829502	99	44	38,5	cyclictest	1896020	-21	kworker/u8:0+flush-8:0	21:00:26	0
1829502	99	44	37,5	cyclictest	2017283	-21	apt-get	22:15:08	0
1829507	99	43	35,6	cyclictest	1916728	-21	gpgv	20:35:00	1
1829507	99	43	35,6	cyclictest	1916728	-21	gpgv	20:35:00	1
1829507	99	43	34,6	cyclictest	1819629	-21	kworker/u8:1+flush-8:0	19:40:14	1
1829507	99	43	33,7	cyclictest	2096492	-21	latency_hist	23:35:02	1
1829502	99	43	36,6	cyclictest	1961787	-21	kworker/u8:1+flush-8:0	00:00:31	0
1829502	99	43	36,5	cyclictest	2035932	-21	kworker/u8:3+events_unbound	00:20:23	0
1829502	99	43	35,6	cyclictest	1952520	-21	kworker/u8:2+events_unbound	21:30:20	0
1829502	99	43	35,5	cyclictest	1838632	-21	kworker/u8:0+flush-8:0	19:25:20	0
1829507	99	42	35,5	cyclictest	1704890	-21	systemd-journal	00:29:12	1
1829502	99	42	37,3	cyclictest	1856312	-21	kworker/u8:2+flush-8:0	19:35:10	0
1963350	2	41	0,3	sleep3	75	-21	kworker/3:1+events	21:20:15	3
1829507	99	41	35,4	cyclictest	1841847	-21	apt-get	19:20:06	1
1829502	99	41	35,4	cyclictest	993089	-21	kworker/u8:4+flush-8:0	19:20:21	0
1829502	99	41	35,4	cyclictest	2003326	-21	kworker/u8:2+events_unbound	22:30:24	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17