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 Fri Jun 26, 2026 12:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1761821	2	383	0,2	sleep3	45	1	irq_work/3	07:25:17	3
2063737	2	95	0,3	chrt	75	-21	kworker/3:1-events	12:25:31	3
1850971	2	95	0,5	chrt	0	-21	swapper/1	08:55:01	1
1851974	2	93	0,2	chrt	47	1	rcuc/3	08:55:23	3
1744767	99	74	67,5	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	10:35:27	1
1744767	99	74	67,5	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	10:35:27	1
2049308	2	64	0,1	sleep0	2049310	-21	grep	12:10:36	0
1744767	99	57	46,8	cyclictest	1748716	-21	ntpq	07:10:30	1
1744767	99	55	49,5	cyclictest	1751768	-21	kworker/u8:2+flush-8:0	07:25:35	1
1744767	99	55	48,5	cyclictest	1846010	-21	kworker/u8:3+events_unbound	09:20:28	1
1744767	99	54	48,5	cyclictest	1743746	-21	kworker/u8:1+events_unbound	08:25:29	1
1744767	99	54	48,4	cyclictest	1836319	-21	kworker/u8:2+flush-8:0	09:00:33	1
1744765	99	54	43,8	cyclictest	1911323	-21	diskstats	09:55:19	0
1816935	2	53	0,2	sleep3	0	-21	swapper/3	08:20:19	3
1744767	99	53	48,4	cyclictest	1751768	-21	kworker/u8:2+events_unbound	07:45:31	1
1744767	99	52	48,3	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	11:55:45	1
1744767	99	52	47,4	cyclictest	1743746	-21	kworker/u8:1+events_unbound	07:30:27	1
1744767	99	52	45,3	cyclictest	1866080	-21	kworker/u8:0+flush-8:0	09:30:30	1
1744765	99	52	45,5	cyclictest	1743746	-21	kworker/u8:1+flush-8:0	07:30:27	0
1923907	2	51	0,4	chrt	0	-21	swapper/3	10:05:25	3
1744767	99	50	44,4	cyclictest	1796754	-21	kworker/u8:0+flush-8:0	08:20:28	1
1744767	99	50	43,5	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	11:40:31	1
1744767	99	49	45,3	cyclictest	1959775	-21	kworker/u8:2+events_unbound	10:50:35	1
1744767	99	49	43,4	cyclictest	1751768	-21	kworker/u8:2+events_unbound	07:35:38	1
1744767	99	49	42,5	cyclictest	1940749	-21	kworker/u8:0+flush-8:0	10:30:28	1
1744767	99	49	37,9	cyclictest	1959673	-21	ntpq	10:40:27	1
1744767	99	48	44,3	cyclictest	1796754	-21	kworker/u8:0+flush-8:0	08:05:31	1
1744767	99	48	42,4	cyclictest	1751768	-21	kworker/u8:2+flush-8:0	07:15:34	1
1744767	99	48	41,5	cyclictest	1796754	-21	kworker/u8:0+flush-8:0	08:10:31	1
1744767	99	48	40,5	cyclictest	1866080	-21	kworker/u8:0+flush-8:0	09:10:25	1
1744767	99	48	40,5	cyclictest	1846010	-21	kworker/u8:3+events_unbound	10:55:27	1
1744765	99	48	39,6	cyclictest	2039769	-21	latency_hist	12:05:00	0
1744767	99	47	42,3	cyclictest	1846010	-21	kworker/u8:3+events_unbound	11:10:33	1
1744767	99	47	41,4	cyclictest	1796754	-21	kworker/u8:0+flush-8:0	08:45:32	1
1744767	99	46	38,5	cyclictest	2009717	-21	kworker/u8:0+flush-8:0	12:30:29	1
1744767	99	45	38,4	cyclictest	1846010	-21	kworker/u8:3+events_unbound	08:55:24	1
1744765	99	45	33,9	cyclictest	1874790	-21	ntpq	09:15:27	0
1744767	99	44	39,4	cyclictest	2009717	-21	kworker/u8:0+flush-8:0	12:20:37	1
1744767	99	44	39,4	cyclictest	1866080	-21	kworker/u8:0+events_unbound	10:00:27	1
1744767	99	44	38,4	cyclictest	2053605	-21	kworker/u8:2+flush-8:0	12:15:31	1
1744767	99	44	37,5	cyclictest	1980648	-21	kworker/u8:1+events_unbound	12:00:32	1
1744767	99	44	36,6	cyclictest	1836319	-21	kworker/u8:2+flush-8:0	10:05:31	1
1744765	99	44	35,6	cyclictest	1766408	-21	latency_hist	07:30:01	0
1744765	99	44	33,9	cyclictest	1704890	-21	systemd-journal	08:00:01	0
1744767	99	43	37,4	cyclictest	2009717	-21	kworker/u8:0+flush-8:0	12:05:19	1
1744767	99	43	36,5	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	12:10:30	1
1744767	99	42	37,4	cyclictest	1751768	-21	kworker/u8:2+events_unbound	07:40:35	1
1744767	99	42	34,6	cyclictest	1866080	-21	kworker/u8:0+events_unbound	09:15:32	1
1744767	99	41	34,5	cyclictest	1980648	-21	kworker/u8:1+flush-8:0	11:30:28	1
1744767	99	41	33,6	cyclictest	1865839	-21	latency_hist	09:10:01	1
1744767	99	41	33,5	cyclictest	1990567	-21	kworker/u8:2+flush-8:0	11:25:31	1
1744770	99	40	30,8	cyclictest	2064566	-21	awk	12:29:59	2
1744770	99	40	29,9	cyclictest	1905667	-21	apt-get	09:50:00	2
1744767	99	40	33,5	cyclictest	1796754	-21	kworker/u8:0+flush-8:0	08:35:30	1
1744767	99	40	32,6	cyclictest	1756810	-21	apt-get	07:20:19	1
1744767	99	40	32,6	cyclictest	1756810	-21	apt-get	07:20:18	1
1744765	99	40	31,7	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	10:45:25	0
1744767	99	39	34,4	cyclictest	1836319	-21	kworker/u8:2+flush-8:0	09:35:35	1
1744767	99	39	26,9	cyclictest	1704890	-21	systemd-journal	10:15:25	1
1744767	99	39	26,9	cyclictest	1704890	-21	systemd-journal	10:15:24	1
1907628	2	38	0,3	sleep2	39	-21	ksoftirqd/2	09:50:23	2
1744770	99	38	23,13	cyclictest	1816625	-21	aten2_r5power_e	08:20:17	2
1744767	99	38	32,4	cyclictest	1900506	-21	apt-get	09:45:00	1
1744767	99	38	32,4	cyclictest	1836319	-21	kworker/u8:2+events_unbound	08:40:23	1
1744767	99	38	31,5	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	09:55:35	1
1744767	99	38	29,6	cyclictest	1704890	-21	systemd-journal	12:35:26	1
1744770	99	37	22,12	cyclictest	2055017	-21	aten2_r5power_v	12:20:17	2
1744767	99	37	31,5	cyclictest	2009717	-21	kworker/u8:0+flush-8:0	12:25:29	1
1744765	99	37	27,7	cyclictest	1905891	-21	cp	09:50:00	0
1744770	99	36	24,10	cyclictest	1806739	-21	aten2_r5power_e	08:10:17	2
1744770	99	36	23,11	cyclictest	1890907	-21	aten2_r5power_c	09:35:15	2
1744770	99	36	22,12	cyclictest	2050006	-21	aten2_r5power_e	12:15:17	2
1744767	99	36	29,5	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	09:40:28	1
1744767	99	36	28,5	cyclictest	1704890	-21	systemd-journal	09:51:25	1
1744770	99	35	3,9	cyclictest	1880960	-21	apt-get	09:25:15	2
1744770	99	35	23,10	cyclictest	1851434	-21	cpuspeed_turbos	08:55:18	2
1744770	99	35	22,11	cyclictest	2015416	-21	aten2_r5power_e	11:40:17	2
1744770	99	35	2,12	cyclictest	1811610	-21	apt-get	08:15:16	2
1744770	99	35	16,16	cyclictest	1806417	-21	turbostat.cron	08:10:01	2
1744767	99	35	31,3	cyclictest	1846010	-21	kworker/u8:3+events_unbound	11:45:20	1
1744767	99	35	28,5	cyclictest	1866080	-21	kworker/u8:0+flush-8:0	10:10:28	1
1744765	99	35	28,5	cyclictest	1796754	-21	kworker/u8:0+flush-8:0	08:35:36	0
1744765	99	35	28,5	cyclictest	1704890	-21	systemd-journal	12:19:35	0
1744770	99	34	1,12	cyclictest	1980684	-21	apt-get	11:05:16	2
1744767	99	34	26,6	cyclictest	1866080	-21	kworker/u8:0+flush-8:0	09:25:26	1
1744765	99	34	29,4	cyclictest	1796754	-21	kworker/u8:0+flush-8:0	08:15:32	0
1744765	99	34	26,6	cyclictest	1704890	-21	systemd-journal	08:35:01	0
1744765	99	34	25,7	cyclictest	1980648	-21	kworker/u8:1+flush-8:0	11:05:22	0
1744765	99	34	25,7	cyclictest	1930217	-21	kworker/u8:1+events_unbound	10:25:28	0
1744770	99	33	27,4	cyclictest	2074589	-21	cp	12:40:01	2
1744765	99	33	28,4	cyclictest	1846010	-21	kworker/u8:3+flush-8:0	11:40:33	0
1744765	99	33	28,3	cyclictest	2032328	-21	kthreadcore	11:55:23	0
1744765	99	33	27,4	cyclictest	1796754	-21	kworker/u8:0+events_unbound	08:20:23	0
1744765	99	33	23,8	cyclictest	1791317	-21	apt-get	07:55:01	0
1744765	99	33	22,9	cyclictest	1704890	-21	systemd-journal	10:15:00	0
1744770	99	32	17,13	cyclictest	1866166	-21	aten2_r5power_e	09:10:16	2
1744770	99	32	16,13	cyclictest	0	-21	swapper/2	11:15:24	2
1744770	99	32	12,6	cyclictest	1849096	-21	seq	08:50:26	2
1744770	99	32	1,11	cyclictest	1995553	-21	apt-get	11:20:16	2
1744767	99	32	27,3	cyclictest	1704890	-21	systemd-journal	08:20:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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