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 Thu Jul 02, 2026 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2982616	2	439	0,3	sleep3	75	-21	kworker/3:1-events	00:10:25	3
2781180	2	80	0,2	chrt	2781178	-21	sshd	20:50:08	0
2679543	99	64	42,19	cyclictest	1704890	-21	systemd-journal	23:20:00	0
2679545	99	62	57,3	cyclictest	2686989	-21	kworker/u8:1+events_unbound	20:10:29	1
2679545	99	60	54,4	cyclictest	2966468	-21	kworker/u8:2+events_unbound	00:15:30	1
2679545	99	58	50,6	cyclictest	1305440	-21	kworker/u8:2+flush-8:0	19:50:27	1
2679543	99	56	38,6	cyclictest	2780950	-21	latency_hist	20:50:01	0
2679545	99	55	49,4	cyclictest	2765837	-21	kworker/u8:0+events_unbound	21:20:30	1
2679543	99	55	45,6	cyclictest	1704890	-21	systemd-journal	00:30:18	0
2679545	99	54	51,2	cyclictest	1305440	-21	kworker/u8:2+events_unbound	20:50:30	1
2679545	99	53	48,4	cyclictest	1305440	-21	kworker/u8:2+events_unbound	19:20:27	1
2679543	99	53	42,8	cyclictest	2720181	-21	ntpq	19:45:23	0
2679545	99	51	45,4	cyclictest	2868278	-21	kworker/u8:1+events_unbound	23:40:22	1
2679545	99	51	44,5	cyclictest	2910162	-21	kworker/u8:3+flush-8:0	23:35:25	1
2679545	99	51	44,5	cyclictest	2868278	-21	kworker/u8:1+flush-8:0	23:05:32	1
2679545	99	50	44,5	cyclictest	1305440	-21	kworker/u8:2+events_unbound	20:30:13	1
2679545	99	50	43,5	cyclictest	1305440	-21	kworker/u8:2+events_unbound	21:00:23	1
2679545	99	50	42,5	cyclictest	2910162	-21	kworker/u8:3+flush-8:0	23:25:25	1
2679545	99	49	44,3	cyclictest	1305440	-21	kworker/u8:2+flush-8:0	19:15:29	1
2679545	99	48	43,4	cyclictest	2836382	-21	kworker/u8:0+flush-8:0	22:55:26	1
2679545	99	48	43,3	cyclictest	2815709	-21	kworker/u8:3+flush-8:0	22:15:26	1
2679545	99	48	41,5	cyclictest	2765837	-21	kworker/u8:0+events_unbound	21:15:26	1
2679543	99	48	39,7	cyclictest	2706497	-21	/usr/sbin/munin	19:35:27	0
2679545	99	47	42,3	cyclictest	2765837	-21	kworker/u8:0+events_unbound	21:40:00	1
2679545	99	47	41,4	cyclictest	2686989	-21	kworker/u8:1+events_unbound	19:25:25	1
2679545	99	47	39,5	cyclictest	2815709	-21	kworker/u8:3+flush-8:0	22:20:25	1
2679545	99	47	38,7	cyclictest	2859816	-21	ntpq	22:05:21	1
2679543	99	47	41,4	cyclictest	2836382	-21	kworker/u8:0+events_unbound	22:25:30	0
2679543	99	47	36,8	cyclictest	1704890	-21	systemd-journal	20:10:00	0
2679545	99	46	41,3	cyclictest	2910162	-21	kworker/u8:3+events_unbound	23:45:18	1
2679545	99	46	40,4	cyclictest	2686989	-21	kworker/u8:1+flush-8:0	20:55:29	1
2679545	99	46	39,5	cyclictest	2686989	-21	kworker/u8:1+flush-8:0	19:30:26	1
2679545	99	45	39,4	cyclictest	2990615	-21	kworker/u8:3+events_unbound	00:30:24	1
2679545	99	45	39,4	cyclictest	2868278	-21	kworker/u8:1+events_unbound	23:00:25	1
2679545	99	45	39,4	cyclictest	2868278	-21	kworker/u8:1+events_unbound	23:00:24	1
2679545	99	45	39,4	cyclictest	2836382	-21	kworker/u8:0+flush-8:0	22:10:25	1
2679545	99	45	39,4	cyclictest	2815709	-21	kworker/u8:3+flush-8:0	21:25:23	1
2679545	99	45	34,8	cyclictest	2889829	-21	ntpq	22:35:24	1
2679545	99	45	32,4	cyclictest	2836382	-21	kworker/u8:0+flush-8:0	22:30:26	1
2679543	99	45	33,10	cyclictest	1704890	-21	systemd-journal	21:30:01	0
2679545	99	44	39,3	cyclictest	1305440	-21	kworker/u8:2+events_unbound	20:15:12	1
2679545	99	44	38,4	cyclictest	2910162	-21	kworker/u8:3+flush-8:0	23:30:14	1
2679545	99	44	38,4	cyclictest	1305440	-21	kworker/u8:2+events_unbound	20:40:26	1
2679545	99	43	39,3	cyclictest	2974618	-21	kworker/u8:4+flush-8:0	00:00:31	1
2679545	99	43	38,4	cyclictest	2686989	-21	kworker/u8:1+events_unbound	19:35:25	1
2679545	99	43	37,4	cyclictest	2686989	-21	kworker/u8:1+flush-8:0	20:20:24	1
2679545	99	43	37,4	cyclictest	2686989	-21	kworker/u8:1+flush-8:0	20:20:24	1
2679545	99	42	38,3	cyclictest	2868278	-21	kworker/u8:1+flush-8:0	22:40:19	1
2679545	99	42	36,4	cyclictest	2765837	-21	kworker/u8:0+flush-8:0	21:05:24	1
2679545	99	42	36,4	cyclictest	2765837	-21	kworker/u8:0+events_unbound	20:35:23	1
2679545	99	42	35,5	cyclictest	2686989	-21	kworker/u8:1+flush-8:0	20:00:24	1
2679545	99	42	34,6	cyclictest	2920928	-21	kworker/u8:0+flush-8:0	23:55:21	1
2679543	99	42	32,8	cyclictest	2924729	-21	ntpq	23:10:23	0
2679549	99	41	33,5	cyclictest	1305440	-21	kworker/u8:2+flush-8:0	19:40:31	2
2679545	99	41	34,5	cyclictest	2930639	-21	apt-get	23:20:03	1
2679545	99	41	34,5	cyclictest	2930639	-21	apt-get	23:20:02	1
2679545	99	41	34,5	cyclictest	2686989	-21	kworker/u8:1+events_unbound	19:55:24	1
2679545	99	41	34,5	cyclictest	1305440	-21	kworker/u8:2+events_unbound	19:45:28	1
2679543	99	41	30,8	cyclictest	2829769	-21	ntpq	21:35:23	0
2679545	99	40	36,3	cyclictest	2885369	-21	kworker/u8:2+events_unbound	22:45:18	1
2679543	99	40	32,6	cyclictest	2756372	-21	/usr/sbin/munin	20:25:20	0
2679543	99	40	31,7	cyclictest	2939855	-21	ntpq	23:25:25	0
2683369	2	39	0,1	sleep1	2683372	-21	missed_timers	19:10:20	1
2679549	99	39	29,8	cyclictest	1704890	-21	systemd-journal	22:20:00	2
2679545	99	39	30,6	cyclictest	2854867	-21	ntpq	22:00:24	1
2679543	99	39	24,11	cyclictest	1704890	-21	systemd-journal	00:25:01	0
2679543	99	38	33,4	cyclictest	2986101	-21	sshd	00:15:18	0
2675113	2	38	23,9	sleep2	0	-21	swapper/2	19:05:16	2
2679545	99	37	33,3	cyclictest	2868278	-21	kworker/u8:1+events_unbound	22:50:14	1
2679545	99	37	33,3	cyclictest	2830945	-21	kworker/u8:1+flush-8:0	21:50:25	1
2679545	99	37	32,4	cyclictest	1305440	-21	kworker/u8:2+flush-8:0	20:45:25	1
2679545	99	37	31,4	cyclictest	2990615	-21	kworker/u8:3+flush-8:0	00:25:21	1
2679543	99	37	2,28	cyclictest	2940788	-21	kworker/0:0+events	23:40:13	0
2679545	99	36	32,3	cyclictest	2836382	-21	kworker/u8:0+events_unbound	22:25:19	1
2679545	99	36	30,4	cyclictest	2830945	-21	kworker/u8:1+flush-8:0	21:40:26	1
2679545	99	36	27,6	cyclictest	2964586	-21	ntpq	23:50:23	1
2679543	99	36	29,5	cyclictest	2980910	-21	tr	00:10:18	0
2679543	99	36	29,5	cyclictest	2855332	-21	grep	22:00:31	0
2679543	99	36	28,6	cyclictest	2995547	-21	/usr/sbin/munin	00:25:22	0
2679549	99	35	3,24	cyclictest	2691602	-21	apt-get	19:20:12	2
2679549	99	35	29,4	cyclictest	2970458	-40	logrotate	00:00:01	2
2679549	99	35	1,31	cyclictest	2725899	-21	unixbench_multi	19:50:31	2
2679545	99	35	30,4	cyclictest	2984474	-21	kworker/u8:1+events_unbound	00:35:13	1
2679543	99	35	11,18	cyclictest	2679397	-21	kworker/0:2+events	19:15:03	0
2679549	99	34	21,11	cyclictest	2995631	-21	aten2_r5power_e	00:25:13	2
2679545	99	34	29,4	cyclictest	2815709	-21	kworker/u8:3+flush-8:0	21:55:16	1
2679545	99	34	29,3	cyclictest	2686989	-21	kworker/u8:1+events_unbound	20:05:28	1
2679545	99	34	25,6	cyclictest	1704890	-21	systemd-journal	23:14:59	1
2679545	99	34	25,3	cyclictest	1305440	-21	kworker/u8:2+flush-8:0	20:25:10	1
2679543	99	34	1,31	cyclictest	2940788	-21	kworker/0:0+events	23:45:11	0
2679549	99	33	3,23	cyclictest	2931154	-21	apt-get	23:20:10	2
2679549	99	33	3,23	cyclictest	2931154	-21	apt-get	23:20:10	2
2679549	99	33	28,3	cyclictest	2706252	-21	cron	19:34:59	2
2679549	99	33	27,4	cyclictest	2868278	-21	kworker/u8:1+flush-8:0	22:45:13	2
2679549	99	33	20,12	cyclictest	2775535	-21	unixbench_multi	20:40:31	2
2679549	99	33	20,11	cyclictest	1	-21	systemd	22:30:00	2
2679545	99	33	29,3	cyclictest	2966468	-21	kworker/u8:2+flush-8:0	00:20:31	1
2679545	99	33	29,3	cyclictest	2830945	-21	kworker/u8:1+flush-8:0	21:45:16	1
2679543	99	33	28,3	cyclictest	2751123	-21	cron	20:19:59	0
2679543	99	33	10,21	cyclictest	2815818	-21	kworker/0:0+events	21:50:26	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