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 Sat Mar 14, 2026 12:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2270452	99	64	53,8	cyclictest	280	-21	systemd-journal	07:15:01	0
2520620	2	56	0,3	sleep3	48	1	ktimers/3	11:20:01	3
2270452	99	55	45,6	cyclictest	280	-21	systemd-journal	07:31:40	0
2270452	99	52	39,11	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	09:26:48	0
2270452	99	52	39,11	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	09:26:48	0
2270454	99	51	41,7	cyclictest	2270268	-21	latency_hist	07:10:00	1
2270452	99	51	41,3	cyclictest	2346591	-21	kworker/u8:0+events_unbound	09:06:52	0
2270452	99	50	44,4	cyclictest	2250922	-21	kworker/u8:1+flush-8:0	07:30:01	0
2270452	99	49	43,4	cyclictest	2361651	-21	kworker/u8:2+events_unbound	08:51:47	0
2270454	99	47	39,6	cyclictest	2361651	-21	kworker/u8:2+flush-8:0	08:56:39	1
2270452	99	47	40,5	cyclictest	2531839	-21	kworker/u8:0+events_unbound	12:01:46	0
2270454	99	46	39,4	cyclictest	2327035	-21	kworker/u8:3+flush-8:0	08:11:40	1
2270452	99	46	41,3	cyclictest	2250922	-21	kworker/u8:1+events_unbound	07:16:39	0
2270452	99	46	40,3	cyclictest	2327035	-21	kworker/u8:3+flush-8:0	08:16:54	0
2270452	99	46	38,6	cyclictest	2580072	-21	kworker/u8:3+flush-8:0	12:21:53	0
2551029	2	45	0,2	sleep3	47	1	rcuc/3	11:51:35	3
2270458	99	45	36,7	cyclictest	280	-21	systemd-journal	08:26:46	2
2270452	99	45	35,8	cyclictest	2445264	-21	ntpq	10:01:51	0
2270452	99	44	41,2	cyclictest	2391602	-21	kworker/u8:2+flush-8:0	09:11:54	0
2270454	99	43	38,3	cyclictest	2386412	-21	kworker/u8:1+events_unbound	10:46:41	1
2270454	99	43	34,7	cyclictest	280	-21	systemd-journal	07:55:00	1
2270452	99	43	39,3	cyclictest	2475919	-21	kworker/u8:3+flush-8:0	10:56:40	0
2270452	99	43	38,3	cyclictest	2250922	-21	kworker/u8:1+events_unbound	07:51:39	0
2270452	99	42	36,4	cyclictest	2580072	-21	kworker/u8:3+events_unbound	12:36:41	0
2270452	99	42	30,4	cyclictest	2327035	-21	kworker/u8:3+events_unbound	09:01:47	0
2270454	99	41	31,7	cyclictest	280	-21	systemd-journal	09:35:45	1
2270452	99	41	38,2	cyclictest	2386412	-21	kworker/u8:1+events_unbound	11:20:01	0
2270454	99	40	32,5	cyclictest	2565541	-21	latency_hist	12:05:01	1
2270452	99	40	36,3	cyclictest	2386412	-21	kworker/u8:1+events_unbound	11:21:47	0
2270452	99	40	35,4	cyclictest	2531839	-21	kworker/u8:0+flush-8:0	11:56:54	0
2270452	99	40	35,2	cyclictest	2391602	-21	kworker/u8:2+events_unbound	09:41:44	0
2270454	99	39	33,4	cyclictest	2425478	-21	kworker/u8:3+flush-8:0	09:46:51	1
2270454	99	39	30,7	cyclictest	280	-21	systemd-journal	11:47:44	1
2270452	99	39	34,3	cyclictest	2475919	-21	kworker/u8:3+events_unbound	11:26:37	0
2270452	99	39	34,3	cyclictest	2386412	-21	kworker/u8:1+events_unbound	11:06:56	0
2270452	99	39	34,3	cyclictest	2346591	-21	kworker/u8:0+events_unbound	09:36:43	0
2270452	99	39	33,4	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	10:31:49	0
2270452	99	39	33,4	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	10:31:49	0
2270452	99	39	33,4	cyclictest	2327035	-21	kworker/u8:3+events_unbound	08:11:39	0
2270452	99	39	32,5	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	09:56:49	0
2270454	99	38	30,5	cyclictest	280	-21	systemd-journal	10:11:45	1
2270454	99	38	29,7	cyclictest	2421632	-21	/usr/sbin/munin	09:41:49	1
2270452	99	38	34,3	cyclictest	2250922	-21	kworker/u8:1+flush-8:0	08:36:55	0
2270452	99	38	33,4	cyclictest	2525444	-21	kworker/u8:2+events_unbound	12:06:49	0
2270452	99	38	33,2	cyclictest	2585513	-21	kworker/u8:1+events_unbound	12:31:43	0
2270452	99	38	32,4	cyclictest	2525444	-21	kworker/u8:2+events_unbound	12:30:01	0
2270452	99	38	26,4	cyclictest	2386412	-21	kworker/u8:1+events_unbound	11:01:40	0
2270452	99	37	31,4	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	11:31:43	0
2270452	99	37	31,4	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	09:21:49	0
2270454	99	36	32,3	cyclictest	2346591	-21	kworker/u8:0+flush-8:0	09:15:01	1
2270454	99	36	29,5	cyclictest	280	-21	systemd-journal	07:34:37	1
2270452	99	36	33,2	cyclictest	2525444	-21	kworker/u8:2+events_unbound	12:16:52	0
2270452	99	36	31,3	cyclictest	2250922	-21	kworker/u8:1+events_unbound	08:06:37	0
2270452	99	36	31,3	cyclictest	2250922	-21	kworker/u8:1+events_unbound	08:00:00	0
2270452	99	36	25,8	cyclictest	2416074	-21	apt-get	09:35:00	0
2514735	2	35	0,3	sleep3	75	-21	kworker/3:1+events	11:11:50	3
2270454	99	35	30,3	cyclictest	2475919	-21	kworker/u8:3+events_unbound	10:51:44	1
2270454	99	35	29,4	cyclictest	2327035	-21	kworker/u8:3+flush-8:0	08:16:39	1
2270454	99	35	29,4	cyclictest	1595475	-21	kworker/u8:0+events_unbound	08:01:40	1
2270454	99	35	28,5	cyclictest	2250922	-21	kworker/u8:1+events_unbound	07:46:49	1
2270452	99	35	32,2	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	10:27:04	0
2270452	99	35	29,4	cyclictest	2250922	-21	kworker/u8:1+flush-8:0	07:36:47	0
2270452	99	35	29,4	cyclictest	2250922	-21	kworker/u8:1+events_unbound	07:46:40	0
2270452	99	35	29,4	cyclictest	2250922	-21	kworker/u8:1+events_unbound	07:21:50	0
2270452	99	35	28,4	cyclictest	2292122	-21	kworker/u8:3+flush-8:0	07:41:56	0
2270454	99	34	29,4	cyclictest	2361651	-21	kworker/u8:2+flush-8:0	08:41:40	1
2270454	99	34	27,5	cyclictest	2460595	-21	journal-offline	10:17:02	1
2270454	99	34	26,6	cyclictest	2575710	-21	/usr/sbin/munin	12:16:46	1
2270452	99	34	29,3	cyclictest	2475919	-21	kworker/u8:3+events_unbound	11:36:38	0
2270452	99	34	29,3	cyclictest	2425478	-21	kworker/u8:3+events_unbound	09:51:42	0
2270452	99	34	29,3	cyclictest	2391602	-21	kworker/u8:2+events_unbound	09:16:36	0
2270452	99	34	27,5	cyclictest	280	-21	systemd-journal	12:12:15	0
2270452	99	34	27,5	cyclictest	2525444	-21	kworker/u8:2+events_unbound	11:51:47	0
2270452	99	34	27,5	cyclictest	2475919	-21	kworker/u8:3+events_unbound	11:11:52	0
2265665	2	34	4,10	sleep2	0	-21	swapper/2	07:05:41	2
2270454	99	33	26,5	cyclictest	2250922	-21	kworker/u8:1+flush-8:0	07:56:40	1
2270452	99	33	28,3	cyclictest	2425478	-21	kworker/u8:3+events_unbound	09:46:47	0
2270452	99	33	27,4	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	10:45:01	0
2270452	99	33	27,4	cyclictest	2346591	-21	kworker/u8:0+flush-8:0	10:06:40	0
2270454	99	32	25,5	cyclictest	280	-21	systemd-journal	11:31:37	1
2270452	99	32	26,4	cyclictest	2346591	-21	kworker/u8:0+events_unbound	10:21:49	0
2270454	99	31	27,2	cyclictest	2505369	-21	cron	11:05:00	1
2270454	99	31	24,5	cyclictest	2356826	-21	apt-get	08:36:35	1
2270454	99	31	23,5	cyclictest	2595177	-21	latency_hist	12:35:01	1
2270452	99	31	27,3	cyclictest	2361651	-21	kworker/u8:2+flush-8:0	08:41:52	0
2270452	99	31	27,3	cyclictest	2250922	-21	kworker/u8:1+flush-8:0	08:31:43	0
2270452	99	31	27,3	cyclictest	1595475	-21	kworker/u8:0+flush-8:0	08:01:54	0
2270452	99	31	26,3	cyclictest	2386412	-21	kworker/u8:1+events_unbound	10:16:52	0
2270458	99	30	26,2	cyclictest	2321544	-21	grep	07:56:55	2
2270458	99	30	17,11	cyclictest	280	-21	systemd-journal	10:21:45	2
2270454	99	30	26,3	cyclictest	2352604	-21	ps	08:31:42	1
2270454	99	30	25,4	cyclictest	2386412	-21	kworker/u8:1+flush-8:0	09:56:41	1
2270454	99	30	23,5	cyclictest	2475919	-21	kworker/u8:3+flush-8:0	11:26:55	1
2270454	99	30	22,6	cyclictest	2415285	-21	ntpq	09:31:48	1
2270452	99	30	27,2	cyclictest	2525444	-21	kworker/u8:2+flush-8:0	11:41:55	0
2270452	99	30	26,3	cyclictest	2475919	-21	kworker/u8:3+flush-8:0	10:51:50	0
2270452	99	30	26,3	cyclictest	2475919	-21	kworker/u8:3+flush-8:0	10:36:54	0
2270452	99	30	22,3	cyclictest	2250922	-21	kworker/u8:1+events_unbound	08:27:47	0
2270458	99	29	24,3	cyclictest	2581042	-21	fschecks_time	12:21:38	2
2270458	99	29	23,4	cyclictest	280	-21	systemd-journal	10:00:45	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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