OSADL QA Farm on Real-time of Mainline Linux

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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 Apr 25, 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
4135143	99	69	59,7	cyclictest	136747	-21	kworker/u8:0+flush-8:0	23:01:18	1
4135143	99	63	53,8	cyclictest	95428	-21	kworker/u8:1+flush-8:0	21:51:25	1
189837	2	59	0,1	sleep0	189842	-21	cut	23:16:13	0
4135143	99	58	48,7	cyclictest	211597	-21	apt-get	23:40:00	1
4135148	99	57	50,5	cyclictest	191660	-21	gpgv	23:20:00	2
4135139	99	57	53,3	cyclictest	106565	-21	kworker/u8:3+events_unbound	22:36:10	0
4135143	99	56	50,4	cyclictest	212085	-21	kworker/u8:3+flush-8:0	23:51:26	1
4135143	99	56	50,4	cyclictest	212085	-21	kworker/u8:3+flush-8:0	23:51:26	1
4135143	99	55	51,3	cyclictest	4093176	-21	kworker/u8:3+flush-8:0	19:16:22	1
4135143	99	55	48,6	cyclictest	4186742	-21	kworker/u8:1+flush-8:0	20:41:18	1
4135139	99	55	50,4	cyclictest	197031	-21	kworker/u8:1+events_unbound	23:36:11	0
4135143	99	54	50,3	cyclictest	106565	-21	kworker/u8:3+events_unbound	22:21:24	1
4135143	99	54	47,5	cyclictest	4087679	-21	kworker/u8:2+events_unbound	20:01:20	1
4135139	99	54	48,4	cyclictest	62356	-21	kworker/u8:0+events_unbound	21:31:18	0
4135148	99	53	43,7	cyclictest	237098	-21	cp	00:05:01	2
4135143	99	53	46,5	cyclictest	161528	-21	kworker/u8:2+events_unbound	23:06:24	1
4135143	99	53	45,6	cyclictest	191696	-21	kworker/u8:0+events_unbound	23:31:22	1
4135143	99	52	46,5	cyclictest	95428	-21	kworker/u8:1+flush-8:0	22:41:20	1
4135143	99	52	46,5	cyclictest	62356	-21	kworker/u8:0+flush-8:0	21:31:24	1
4135143	99	52	46,4	cyclictest	4087679	-21	kworker/u8:2+flush-8:0	19:36:25	1
4135139	99	52	49,2	cyclictest	136747	-21	kworker/u8:0+events_unbound	22:51:11	0
4135143	99	51	45,4	cyclictest	212085	-21	kworker/u8:3+flush-8:0	00:21:20	1
4135143	99	51	43,6	cyclictest	136747	-21	kworker/u8:0+flush-8:0	22:51:22	1
4135143	99	51	38,5	cyclictest	52200	-21	kworker/u8:2+flush-8:0	21:56:11	1
4135139	99	51	47,3	cyclictest	112038	-21	kworker/u8:0+events_unbound	22:01:12	0
4135143	99	50	45,4	cyclictest	212085	-21	kworker/u8:3+events_unbound	00:31:23	1
4135143	99	50	42,6	cyclictest	212085	-21	kworker/u8:3+events_unbound	00:16:22	1
4135139	99	50	44,4	cyclictest	212085	-21	kworker/u8:3+events_unbound	23:51:23	0
4135139	99	50	44,4	cyclictest	212085	-21	kworker/u8:3+events_unbound	23:51:22	0
34114	2	50	0,6	chrt	0	-21	swapper/2	20:41:14	2
4154128	2	49	0,2	sleep3	47	1	rcuc/3	19:26:15	3
4135148	99	49	39,7	cyclictest	280	-21	systemd-journal	23:05:00	2
4135139	99	49	45,3	cyclictest	231906	-21	kworker/u8:4+events_unbound	00:16:08	0
4135139	99	49	34,10	cyclictest	280	-21	systemd-journal	20:13:17	0
4135143	99	48	43,3	cyclictest	4087679	-21	kworker/u8:2+flush-8:0	19:11:14	1
4135143	99	48	42,4	cyclictest	7628	-21	kworker/u8:0+flush-8:0	20:46:17	1
4135143	99	48	41,5	cyclictest	4171638	-21	kworker/u8:3+flush-8:0	20:31:19	1
4135143	99	48	40,6	cyclictest	181319	-21	kworker/u8:4+flush-8:0	23:11:21	1
4135143	99	47	43,3	cyclictest	4156839	-21	kworker/u8:0+events_unbound	19:46:17	1
4135143	99	47	42,4	cyclictest	4087679	-21	kworker/u8:2+flush-8:0	20:06:18	1
4135143	99	47	42,3	cyclictest	106565	-21	kworker/u8:3+events_unbound	22:31:19	1
4135143	99	47	40,4	cyclictest	7628	-21	kworker/u8:0+flush-8:0	20:51:17	1
4135143	99	46	41,4	cyclictest	4186742	-21	kworker/u8:1+flush-8:0	20:56:23	1
4135143	99	46	41,3	cyclictest	136747	-21	kworker/u8:0+events_unbound	22:46:24	1
4135143	99	46	40,5	cyclictest	212085	-21	kworker/u8:3+flush-8:0	23:46:21	1
4135143	99	46	39,5	cyclictest	52200	-21	kworker/u8:2+events_unbound	21:16:17	1
4135139	99	46	43,2	cyclictest	95428	-21	kworker/u8:1+events_unbound	23:05:04	0
4135143	99	45	40,4	cyclictest	4186742	-21	kworker/u8:1+flush-8:0	20:26:19	1
4135143	99	45	40,4	cyclictest	4186742	-21	kworker/u8:1+flush-8:0	20:26:19	1
4135143	99	45	38,6	cyclictest	4171638	-21	kworker/u8:3+events_unbound	21:21:19	1
4135139	99	45	41,3	cyclictest	4171638	-21	kworker/u8:3+events_unbound	21:11:27	0
4135139	99	45	35,7	cyclictest	280	-21	systemd-journal	21:50:00	0
4135143	99	44	40,3	cyclictest	4125450	-21	kworker/u8:1+flush-8:0	19:31:20	1
4135143	99	44	38,4	cyclictest	7628	-21	kworker/u8:0+events_unbound	21:01:20	1
4135143	99	44	37,4	cyclictest	62356	-21	kworker/u8:0+flush-8:0	21:36:21	1
4135139	99	44	37,4	cyclictest	171440	-21	true	23:00:00	0
27962	2	44	0,1	chrt	27963	-21	/usr/sbin/munin	20:36:12	2
4135148	99	43	35,5	cyclictest	231652	-40	logrotate	00:00:00	2
4135143	99	43	39,3	cyclictest	4087679	-21	kworker/u8:2+flush-8:0	19:56:20	1
4135143	99	43	39,3	cyclictest	4087679	-21	kworker/u8:2+events_unbound	19:41:21	1
4135143	99	43	36,5	cyclictest	4171638	-21	kworker/u8:3+flush-8:0	20:16:19	1
4135139	99	43	40,2	cyclictest	7628	-21	kworker/u8:0+events_unbound	20:47:18	0
4135139	99	43	39,3	cyclictest	62356	-21	kworker/u8:0+events_unbound	21:25:18	0
4135139	99	43	39,3	cyclictest	106565	-21	kworker/u8:3+events_unbound	22:40:38	0
4135139	99	43	32,9	cyclictest	32746	-21	diskstats	20:41:09	0
4135143	99	42	38,3	cyclictest	52200	-21	kworker/u8:2+flush-8:0	21:11:19	1
4135143	99	42	37,4	cyclictest	267087	-21	kworker/u8:0+flush-8:0	00:36:09	1
4135143	99	42	37,3	cyclictest	106565	-21	kworker/u8:3+flush-8:0	22:26:18	1
4135143	99	42	35,5	cyclictest	112038	-21	kworker/u8:0+flush-8:0	22:01:18	1
4135143	99	42	33,7	cyclictest	125763	-21	ntpq	22:11:19	1
4135139	99	42	39,2	cyclictest	231906	-21	kworker/u8:4+events_unbound	00:39:40	0
4135139	99	42	38,3	cyclictest	95428	-21	kworker/u8:1+events_unbound	23:12:49	0
4135139	99	42	38,3	cyclictest	161528	-21	kworker/u8:2+events_unbound	23:01:42	0
4135143	99	41	35,4	cyclictest	62356	-21	kworker/u8:0+events_unbound	21:30:01	1
4135139	99	41	38,2	cyclictest	191696	-21	kworker/u8:0+events_unbound	23:56:11	0
4135139	99	41	37,3	cyclictest	62356	-21	kworker/u8:0+events_unbound	21:35:18	0
4135139	99	41	37,3	cyclictest	52200	-21	kworker/u8:2+events_unbound	21:17:29	0
4135139	99	41	37,3	cyclictest	231906	-21	kworker/u8:4+events_unbound	00:20:17	0
4135139	99	41	34,5	cyclictest	4181914	-21	apt-get	19:56:05	0
4135139	99	41	31,8	cyclictest	4165852	-21	ntpq	19:36:17	0
4135148	99	40	23,3	cyclictest	212405	-21	cpuspeed_turbos	23:41:08	2
4135143	99	40	36,3	cyclictest	212085	-21	kworker/u8:3+events_unbound	00:11:19	1
4135139	99	40	37,2	cyclictest	4171638	-21	kworker/u8:3+events_unbound	20:28:18	0
4135139	99	40	37,2	cyclictest	4171638	-21	kworker/u8:3+events_unbound	20:28:18	0
4135139	99	40	36,3	cyclictest	7628	-21	kworker/u8:0+events_unbound	21:02:25	0
4135139	99	40	36,3	cyclictest	4093176	-21	kworker/u8:3+events_unbound	19:22:17	0
4135139	99	40	36,3	cyclictest	4087679	-21	kworker/u8:2+events_unbound	19:50:38	0
4135139	99	40	36,3	cyclictest	212085	-21	kworker/u8:3+events_unbound	00:04:16	0
4135139	99	40	32,5	cyclictest	106836	-21	latency_hist	21:55:01	0
4134707	2	40	4,9	sleep2	0	-21	swapper/2	19:06:48	2
4135148	99	39	30,7	cyclictest	42146	-21	store	20:50:01	2
4135143	99	39	34,3	cyclictest	95428	-21	kworker/u8:1+events_unbound	22:06:11	1
4135143	99	39	34,3	cyclictest	95428	-21	kworker/u8:1+events_unbound	22:06:10	1
4135143	99	39	33,5	cyclictest	197031	-21	kworker/u8:1+flush-8:0	23:26:21	1
4135143	99	39	29,7	cyclictest	101033	-21	ntpq	21:46:19	1
4135139	99	39	35,3	cyclictest	52200	-21	kworker/u8:2+events_unbound	21:57:38	0
4135139	99	39	35,3	cyclictest	52200	-21	kworker/u8:2+events_unbound	21:42:36	0
4135139	99	39	35,3	cyclictest	246507	-21	kworker/u8:1+events_unbound	00:27:17	0
4135139	99	39	35,3	cyclictest	212085	-21	kworker/u8:3+events_unbound	23:40:39	0
4135139	99	39	34,4	cyclictest	4087679	-21	kworker/u8:2+events_unbound	20:07:18	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17