OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot4s.osadl.org (updated Mon Aug 24, 2026 00:45:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4101320	2	79	56,22	sleep11	0	-21	swapper/11	19:08:51	3
4101787	99	71	68,2	cyclictest	4165264	-21	kworker/u32:4+flush-259:0	20:21:04	0
4101787	99	67	65,1	cyclictest	232977	-21	kworker/u32:1+flush-259:0	00:11:27	0
4101787	99	67	63,2	cyclictest	714	-21	kworker/u32:1+events_unbound	21:40:56	0
4101813	99	65	63,1	cyclictest	4169509	-21	kworker/u32:1+flush-259:0	20:27:45	14
253134	2	65	0,0	sleep9	0	-21	swapper/9	00:18:40	15
4101832	99	62	26,26	cyclictest	268962	-21	ssh	00:30:15	6
4101317	2	60	57,2	sleep10	0	-21	swapper/10	19:08:50	2
4101798	99	55	51,3	cyclictest	93492	-21	kworker/u32:4+flush-259:0	22:55:19	9
4101794	99	55	51,2	cyclictest	93492	-21	kworker/u32:4+flush-259:0	23:33:04	8
4101827	99	52	49,2	cyclictest	85565	-21	kworker/u32:2+flush-259:0	22:16:16	4
4101801	99	51	49,2	cyclictest	177583	-21	kworker/u32:2+flush-259:0	23:29:14	10
4101794	99	51	47,4	cyclictest	714	-21	kworker/u32:1+flush-259:0	22:10:45	8
4101361	2	51	49,1	sleep8	0	-21	swapper/8	19:09:20	14
4101248	2	49	47,1	sleep3	0	-21	swapper/3	19:07:54	9
4101808	99	47	46,1	cyclictest	3999058	-1	kworker/u33:2+i915_flip	23:51:01	12
4189	98	46	0,44	rtkit-daemon	0	-21	swapper/9	19:08:18	15
4101808	99	46	44,2	cyclictest	93492	-21	kworker/u32:4+events_unbound	23:56:38	12
4101794	99	46	42,3	cyclictest	4131815	-21	kworker/u32:3+events_unbound	20:22:18	8
4101827	99	45	43,2	cyclictest	129849	-21	kworker/u32:3+flush-259:0	22:42:06	4
4101808	99	45	42,2	cyclictest	115400	-21	kworker/u32:0+flush-259:0	22:35:15	12
4101794	99	45	40,3	cyclictest	20709	-21	kworker/u32:4+flush-259:0	21:49:25	8
4101794	99	45	40,3	cyclictest	20709	-21	kworker/u32:4+flush-259:0	21:49:24	8
4101832	99	44	42,1	cyclictest	275815	-21	kworker/u32:2+events_unbound	00:35:21	6
4101823	99	44	42,2	cyclictest	180960	-21	kworker/u32:3+flush-259:0	23:42:19	3
4101808	99	44	42,2	cyclictest	714	-21	kworker/u32:1+flush-259:0	21:50:26	12
4101808	99	44	42,2	cyclictest	714	-21	kworker/u32:1+flush-259:0	21:50:25	12
4101827	99	43	43,0	cyclictest	3999058	-1	kworker/u33:2+i915_flip	19:45:23	4
4101827	99	43	41,2	cyclictest	4165264	-21	kworker/u32:4+events_unbound	20:35:18	4
4101823	99	43	40,2	cyclictest	20709	-21	kworker/u32:4+events_unbound	21:42:31	3
4101794	99	43	12,31	cyclictest	714	-21	kworker/u32:1+events_unbound	22:06:08	8
4101791	99	43	41,1	cyclictest	4101111	-21	kworker/u32:2+flush-259:0	19:42:40	1
4101787	99	43	35,7	cyclictest	1188	-21	in:imjournal	22:45:07	0
4101794	99	42	38,2	cyclictest	177583	-21	kworker/u32:2+flush-259:0	23:21:53	8
4101817	99	41	40,1	cyclictest	93492	-21	kworker/u32:4+flush-259:0	23:40:18	15
4101808	99	41	39,2	cyclictest	180960	-21	kworker/u32:3+events_unbound	00:19:36	12
4101794	99	41	36,5	cyclictest	20709	-21	kworker/u32:4+events_unbound	21:50:29	8
4101794	99	41	36,5	cyclictest	20709	-21	kworker/u32:4+events_unbound	21:50:28	8
4101119	2	41	38,2	sleep7	0	-21	swapper/7	19:06:22	13
4101832	99	40	39,1	cyclictest	64188	-21	kworker/u32:0+flush-259:0	22:10:24	6
4101829	99	40	38,1	cyclictest	85565	-21	kworker/u32:2+events_unbound	22:18:11	5
4101827	99	40	39,1	cyclictest	245796	-21	kworker/u32:2+events_unbound	00:25:18	4
4101823	99	40	40,0	cyclictest	0	-21	swapper/11	22:20:24	3
4101817	99	39	37,2	cyclictest	714	-21	kworker/u32:1+events_unbound	21:26:34	15
4101808	99	39	38,1	cyclictest	180960	-21	kworker/u32:3+events_unbound	00:25:28	12
4101808	99	39	37,2	cyclictest	64188	-21	kworker/u32:0+events_unbound	21:55:54	12
4101808	99	39	37,2	cyclictest	64188	-21	kworker/u32:0+events_unbound	21:55:53	12
4101798	99	39	37,1	cyclictest	180960	-21	kworker/u32:3+events_unbound	23:35:00	9
4101794	99	39	35,3	cyclictest	20709	-21	kworker/u32:4+flush-259:0	21:28:05	8
4101330	2	39	37,1	sleep4	0	-21	swapper/4	19:08:59	10
4101829	99	38	9,28	cyclictest	3318	-21	Xorg	21:04:34	5
4101827	99	38	36,2	cyclictest	714	-21	kworker/u32:1+flush-259:0	21:34:54	4
4101827	99	38	34,3	cyclictest	4101111	-21	kworker/u32:2+events_unbound	19:18:00	4
4101821	99	38	35,2	cyclictest	714	-21	kworker/u32:1+flush-259:0	22:14:59	2
4101821	99	38	0,0	cyclictest	0	-21	swapper/10	00:35:05	2
4101817	99	38	37,1	cyclictest	180960	-21	kworker/u32:3+events_unbound	00:33:28	15
4101794	99	38	34,4	cyclictest	715	-21	kworker/u32:2+flush-259:0	21:13:08	8
4101232	2	38	36,1	sleep6	0	-21	swapper/6	19:07:42	12
4101073	2	38	32,2	sleep14	0	-21	swapper/14	19:05:56	6
4097220	2	38	36,1	sleep5	0	-21	swapper/5	19:05:00	11
4101827	99	37	36,1	cyclictest	177583	-21	kworker/u32:2+events_unbound	23:21:14	4
4101827	99	37	35,2	cyclictest	93492	-21	kworker/u32:4+flush-259:0	22:20:23	4
4101821	99	37	0,0	cyclictest	0	-21	swapper/10	00:11:07	2
4101808	99	37	36,1	cyclictest	85565	-21	kworker/u32:2+events_unbound	22:25:13	12
4101808	99	37	35,2	cyclictest	714	-21	kworker/u32:1+events_unbound	22:20:18	12
4101801	99	37	0,3	cyclictest	0	-21	swapper/4	23:32:02	10
4101787	99	37	34,2	cyclictest	196019	-21	kworker/u32:0+flush-259:0	23:50:17	0
4101821	99	36	0,35	cyclictest	0	-21	swapper/10	21:25:14	2
4101817	99	36	35,1	cyclictest	246626	-21	kworker/u32:4+flush-259:0	00:20:23	15
4101817	99	36	35,1	cyclictest	196019	-21	kworker/u32:0+events_unbound	23:45:17	15
4101817	99	36	34,2	cyclictest	177583	-21	kworker/u32:2+events_unbound	23:26:04	15
4101808	99	36	35,1	cyclictest	93492	-21	kworker/u32:4+events_unbound	23:13:34	12
4101808	99	36	35,1	cyclictest	245796	-21	kworker/u32:2+events_unbound	00:21:03	12
4101389	2	36	34,1	sleep0	0	-21	swapper/0	19:09:43	0
4101053	2	36	34,1	sleep13	0	-21	swapper/13	19:05:39	5
4101837	99	35	33,2	cyclictest	93492	-21	kworker/u32:4+flush-259:0	22:35:45	7
4101829	99	35	28,4	cyclictest	0	-21	swapper/13	19:42:26	5
4101823	99	35	0,35	cyclictest	0	-21	swapper/11	19:57:33	3
4101821	99	35	2,30	cyclictest	3578	-21	gnome-shell	20:30:21	2
4101821	99	35	0,34	cyclictest	0	-21	swapper/10	20:28:55	2
4101821	99	35	0,32	cyclictest	4016024	-1	kworker/u33:1+i915_flip	21:53:40	2
4101821	99	35	0,32	cyclictest	4016024	-1	kworker/u33:1+i915_flip	21:53:39	2
4101817	99	35	33,2	cyclictest	4152832	-21	kworker/u32:2+events_unbound	20:20:14	15
4101808	99	35	35,0	cyclictest	0	-21	swapper/6	00:13:28	12
4101808	99	35	34,0	cyclictest	0	-21	swapper/6	19:48:05	12
4101804	99	35	33,2	cyclictest	180960	-21	kworker/u32:3+events_unbound	23:29:52	11
4101794	99	35	31,4	cyclictest	232977	-21	kworker/u32:1+flush-259:0	00:33:40	8
4101794	99	35	31,2	cyclictest	232977	-21	kworker/u32:1+events_unbound	00:39:45	8
4101794	99	35	30,3	cyclictest	4140065	-21	kworker/u32:0+events_unbound	20:25:09	8
4101373	2	35	33,1	sleep2	0	-21	swapper/2	19:09:29	8
4101243	2	35	32,1	sleep15	0	-21	swapper/15	19:07:50	7
4101837	99	34	31,2	cyclictest	4148440	-21	kworker/u32:5+events_unbound	20:05:15	7
4101832	99	34	33,1	cyclictest	93492	-21	kworker/u32:4+flush-259:0	22:26:47	6
4101829	99	34	31,2	cyclictest	232977	-21	kworker/u32:1+events_unbound	00:13:23	5
4101817	99	34	33,1	cyclictest	4152832	-21	kworker/u32:2+events_unbound	20:10:14	15
4101794	99	34	29,3	cyclictest	4182002	-21	kworker/u32:5+flush-259:0	21:01:24	8
4101794	99	34	29,3	cyclictest	1161540	-21	WRScene~ilder#1	21:09:41	8
4101794	99	34	28,3	cyclictest	3578	-21	gnome-shell	23:45:03	8
4101794	99	34	2,32	cyclictest	93492	-21	kworker/u32:4+flush-259:0	23:04:47	8
4101794	99	34	1,31	cyclictest	1161449	-21	thunderbird	20:39:39	8
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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