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 Jul 10, 2026 12:44:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3320505	2	100	0,3	chrt	75	-21	kworker/3:1-events	12:20:11	3
3045157	2	81	0,1	sleep0	3045159	-21	sort	07:45:00	0
3238447	2	69	0,2	sleep3	48	1	ktimers/3	10:55:14	3
3033414	2	56	0,3	sleep1	3008366	-21	cyclictest	07:30:16	1
3008379	99	55	47,6	cyclictest	3008229	-21	kworker/u8:0+flush-8:0	08:10:26	1
3008379	99	54	47,5	cyclictest	1704890	-21	systemd-journal	11:15:17	1
3008371	99	54	44,8	cyclictest	3239162	-21	ntpq	10:55:17	0
3008379	99	50	40,8	cyclictest	3249172	-21	ntpq	11:05:15	1
3008371	99	50	45,4	cyclictest	3226202	-21	kworker/u8:1+events_unbound	10:50:08	0
3008371	99	50	44,4	cyclictest	3209801	-21	latency_hist	10:30:01	0
3008379	99	49	43,4	cyclictest	3194351	-21	kworker/u8:1+flush-8:0	10:15:08	1
3008379	99	48	38,7	cyclictest	3338585	-21	ntpq	12:35:16	1
3008371	99	48	39,7	cyclictest	3150065	-21	latency_hist	09:30:00	0
3008371	99	47	41,4	cyclictest	3204637	-21	latency_hist	10:25:01	0
3008379	99	46	40,5	cyclictest	3270478	-21	kworker/u8:0+flush-8:0	11:35:16	1
3008379	99	46	40,5	cyclictest	3270478	-21	kworker/u8:0+flush-8:0	11:35:16	1
3008379	99	46	38,6	cyclictest	3045421	-21	apt-get	07:45:04	1
3008379	99	46	36,8	cyclictest	3045032	-21	cp	07:45:01	1
3008371	99	46	37,7	cyclictest	3170140	-21	/usr/sbin/munin	09:50:16	0
3008379	99	45	40,3	cyclictest	3035561	-21	kworker/u8:1+flush-8:0	08:45:10	1
3008383	99	44	36,6	cyclictest	3204635	-21	apt-get	10:24:59	2
3008379	99	44	38,4	cyclictest	3099624	-21	kworker/u8:4+flush-8:0	09:30:10	1
3008371	99	44	35,6	cyclictest	3260047	-21	latency_hist	11:20:00	0
3008379	99	43	39,3	cyclictest	3035561	-21	kworker/u8:1+events_unbound	09:05:19	1
3008371	99	43	39,3	cyclictest	3240393	-21	kworker/u8:0+events_unbound	11:10:18	0
3008379	99	42	37,3	cyclictest	3099624	-21	kworker/u8:4+flush-8:0	09:40:19	1
3008379	99	42	32,8	cyclictest	3269211	-21	ntpq	11:25:16	1
3008371	99	42	39,2	cyclictest	3094557	-21	kworker/u8:0+flush-8:0	08:35:24	0
3008371	99	42	37,4	cyclictest	2176286	-21	kworker/u8:2+flush-8:0	07:25:09	0
3008371	99	42	33,7	cyclictest	1704890	-21	systemd-journal	12:00:01	0
3008371	99	42	29,10	cyclictest	1704890	-21	systemd-journal	11:40:00	0
3008371	99	42	29,10	cyclictest	1704890	-21	systemd-journal	11:39:59	0
3008379	99	41	35,5	cyclictest	3094557	-21	kworker/u8:0+flush-8:0	08:35:05	1
3008379	99	41	34,5	cyclictest	3104007	-21	ntpq	08:40:18	1
3008371	99	41	32,7	cyclictest	1704890	-21	systemd-journal	11:09:37	0
3008383	99	40	31,7	cyclictest	3339518	-21	cron	12:40:01	2
3008379	99	40	35,4	cyclictest	3226202	-21	kworker/u8:1+events_unbound	11:20:17	1
3008379	99	40	34,3	cyclictest	3065332	-21	kworker/u8:2+flush-8:0	08:05:07	1
3008379	99	40	32,6	cyclictest	1704890	-21	systemd-journal	10:01:16	1
3008371	99	40	35,3	cyclictest	3099624	-21	kworker/u8:4+events_unbound	09:40:17	0
3008371	99	40	33,5	cyclictest	3120062	-21	apt-get	09:00:01	0
3008371	99	40	31,7	cyclictest	1704890	-21	systemd-journal	10:49:59	0
3008371	99	40	29,9	cyclictest	3140649	-21	diskstats	09:20:07	0
3008379	99	39	29,8	cyclictest	3284150	-21	ntpq	11:40:19	1
3008371	99	39	33,4	cyclictest	3226202	-21	kworker/u8:1+flush-8:0	11:25:08	0
3008379	99	38	33,4	cyclictest	3150693	-21	kworker/u8:2+flush-8:0	10:25:16	1
3008371	99	38	33,3	cyclictest	3150693	-21	kworker/u8:2+flush-8:0	09:55:24	0
3008371	99	38	30,6	cyclictest	3030280	-21	apt-get	07:30:07	0
3008371	99	38	29,7	cyclictest	3210256	-21	/usr/sbin/munin	10:30:17	0
3008371	99	38	1,33	cyclictest	3199746	-21	unin-run	10:19:59	0
3008371	99	37	31,4	cyclictest	3008229	-21	kworker/u8:0+flush-8:0	07:45:09	0
3008371	99	37	31,4	cyclictest	2176286	-21	kworker/u8:2+flush-8:0	07:15:24	0
3008371	99	37	29,6	cyclictest	1704890	-21	systemd-journal	12:19:00	0
3008371	99	37	28,7	cyclictest	3285287	-21	/usr/sbin/munin	11:45:15	0
3008379	99	36	31,4	cyclictest	3065332	-21	kworker/u8:2+flush-8:0	08:15:21	1
3008379	99	36	31,3	cyclictest	3008229	-21	kworker/u8:0+flush-8:0	07:25:25	1
3008379	99	36	30,5	cyclictest	3309480	-21	kworker/u8:2+flush-8:0	12:25:15	1
3008379	99	36	30,4	cyclictest	3035561	-21	kworker/u8:1+events_unbound	08:25:09	1
3008379	99	36	29,5	cyclictest	3150693	-21	kworker/u8:2+events_unbound	10:05:07	1
3008379	99	36	27,7	cyclictest	3215021	-21	apt-get	10:35:00	1
3008379	99	36	27,6	cyclictest	1704890	-21	systemd-journal	07:17:00	1
3008371	99	36	32,3	cyclictest	3220684	-21	kworker/u8:3+events_unbound	12:10:01	0
3008371	99	36	31,4	cyclictest	2976073	-21	kworker/u8:3+flush-8:0	07:35:26	0
3008371	99	36	31,3	cyclictest	3226202	-21	kworker/u8:1+events_unbound	11:20:23	0
3008371	99	35	30,4	cyclictest	2176286	-21	kworker/u8:2+flush-8:0	07:20:10	0
3008379	99	34	29,4	cyclictest	3220684	-21	kworker/u8:3+events_unbound	11:45:18	1
3008379	99	34	29,3	cyclictest	3146057	-21	irqrtprio	09:25:11	1
3008379	99	34	29,3	cyclictest	2176286	-21	kworker/u8:2+events_unbound	07:10:07	1
3008379	99	34	28,4	cyclictest	3150693	-21	kworker/u8:2+events_unbound	09:45:16	1
3008379	99	34	27,5	cyclictest	1704890	-21	systemd-journal	11:56:16	1
3008379	99	34	26,6	cyclictest	3235171	-21	latency_hist	10:55:00	1
3008379	99	34	24,8	cyclictest	3114876	-21	apt-get	08:55:00	1
3008379	99	34	23,9	cyclictest	3159143	-21	ntpq	09:35:18	1
3008371	99	34	24,8	cyclictest	3060306	-21	/usr/sbin/munin	08:00:17	0
3008379	99	33	30,2	cyclictest	3084911	-21	systemd-run	08:25:00	1
3008379	99	33	20,10	cyclictest	1704890	-21	systemd-journal	09:11:16	1
3008371	99	33	29,3	cyclictest	3145102	-21	kworker/u8:1+flush-8:0	09:30:26	0
3008371	99	33	28,4	cyclictest	3065332	-21	kworker/u8:2+flush-8:0	08:25:23	0
3008371	99	33	27,4	cyclictest	2976073	-21	kworker/u8:3+flush-8:0	07:10:20	0
3008371	99	33	24,6	cyclictest	3304855	-21	latency_hist	12:05:02	0
3008379	99	32	28,3	cyclictest	3008229	-21	kworker/u8:0+events_unbound	07:20:18	1
3008379	99	32	27,4	cyclictest	3099624	-21	kworker/u8:4+flush-8:0	09:20:09	1
3008379	99	32	26,5	cyclictest	3065332	-21	kworker/u8:2+events_unbound	09:00:25	1
3008379	99	32	25,5	cyclictest	1704890	-21	systemd-journal	11:31:17	1
3007992	2	32	4,9	sleep2	0	-21	swapper/2	07:07:28	2
3008379	99	31	27,3	cyclictest	3309480	-21	kworker/u8:2+flush-8:0	12:30:10	1
3008379	99	31	27,3	cyclictest	3169933	-21	kworker/u8:0+flush-8:0	10:10:22	1
3008379	99	31	26,4	cyclictest	3194351	-21	kworker/u8:1+events_unbound	10:20:20	1
3008379	99	31	26,3	cyclictest	3170885	-21	irqrtprio	09:50:11	1
3008379	99	31	23,6	cyclictest	3120069	-21	latency_hist	09:00:00	1
3008379	99	31	22,6	cyclictest	1704890	-21	systemd-journal	07:51:17	1
3008371	99	31	26,4	cyclictest	3220684	-21	kworker/u8:3+flush-8:0	11:40:25	0
3008371	99	31	25,4	cyclictest	3065332	-21	kworker/u8:2+events_unbound	08:15:08	0
3008371	99	31	24,5	cyclictest	3329209	-21	grep	12:25:24	0
3008371	99	31	23,6	cyclictest	1704890	-21	systemd-journal	09:50:00	0
3008383	99	30	26,2	cyclictest	3290527	-21	fschecks_count	11:50:07	2
3008383	99	30	26,2	cyclictest	3170430	-21	fschecks_count	09:50:08	2
3008383	99	30	26,2	cyclictest	3100284	-21	aten2_r5power_c	08:40:05	2
3008383	99	30	22,6	cyclictest	1704890	-21	systemd-journal	09:05:01	2
3008379	99	30	25,4	cyclictest	2976073	-21	kworker/u8:3+events_unbound	07:35:22	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