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 Sun Jul 19, 2026 00:45:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4189	98	59	0,57	rtkit-daemon	0	-21	swapper/1	19:05:26	1
4016138	99	56	55,0	cyclictest	0	-21	swapper/10	19:32:21	2
4016135	99	55	54,1	cyclictest	148059	-21	kworker/u32:4+events_unbound	00:25:26	15
4015642	2	51	48,2	sleep15	0	-21	swapper/15	19:08:51	7
4015633	2	49	47,1	sleep8	0	-21	swapper/8	19:08:44	14
4016149	99	46	23,13	cyclictest	1484476	-21	gmain	00:39:53	6
4015560	2	46	44,1	sleep13	0	-21	swapper/13	19:07:44	5
4016114	99	44	41,1	cyclictest	172701	-21	kworker/u32:0-events_unbound	00:31:33	8
4015568	2	44	42,1	sleep4	0	-21	swapper/4	19:07:52	10
4016149	99	42	5,13	cyclictest	0	-21	swapper/14	20:05:18	6
4015733	2	42	39,2	sleep14	0	-21	swapper/14	19:09:54	6
4016114	99	41	8,30	cyclictest	618598	-21	thunderbird	20:07:05	8
4016114	99	41	36,3	cyclictest	618598	-21	thunderbird	21:49:09	8
4016152	99	40	40,0	cyclictest	3967243	-1	kworker/u33:2+i915_flip	19:53:04	7
4016149	99	40	38,2	cyclictest	618598	-21	thunderbird	22:42:05	6
4016140	99	40	39,1	cyclictest	4168796	-21	kworker/u32:1+flush-259:0	22:00:22	3
4016135	99	40	40,0	cyclictest	0	-21	swapper/9	21:10:17	15
4016114	99	40	38,2	cyclictest	0	-21	swapper/2	22:59:05	8
4016114	99	40	10,1	cyclictest	95604	-21	kworker/2:1-events	23:27:09	8
4016114	99	40	10,1	cyclictest	95604	-21	kworker/2:1-events	23:27:09	8
4016149	99	39	4,25	cyclictest	618598	-21	thunderbird	00:06:56	6
4016140	99	39	37,2	cyclictest	3578	-21	gnome-shell	21:35:53	3
4016140	99	39	36,3	cyclictest	45675	-21	kworker/u32:0+flush-259:0	22:45:17	3
4015691	2	39	35,3	sleep5	0	-21	swapper/5	19:09:29	11
4016149	99	38	0,24	cyclictest	0	-21	swapper/14	19:32:21	6
4015673	2	38	36,1	sleep6	0	-21	swapper/6	19:09:14	12
4015469	2	38	35,2	sleep9	0	-21	swapper/9	19:06:36	15
4016135	99	37	36,1	cyclictest	4036417	-21	kworker/u32:0+events_unbound	20:10:20	15
4016114	99	37	8,0	cyclictest	0	-21	swapper/2	21:22:07	8
4016114	99	37	37,0	cyclictest	0	-21	swapper/2	22:17:59	8
4016114	99	37	30,4	cyclictest	618598	-21	thunderbird	21:03:07	8
4015689	2	37	31,1	sleep3	0	-21	swapper/3	19:09:27	9
4016152	99	36	33,2	cyclictest	4070008	-21	kworker/u32:1+flush-259:0	20:15:16	7
4016140	99	36	33,0	cyclictest	21	1	rcu_preempt	21:10:17	3
4016114	99	36	9,1	cyclictest	0	-21	swapper/2	22:00:05	8
4016114	99	36	34,0	cyclictest	0	-21	swapper/2	21:07:37	8
4016114	99	36	29,4	cyclictest	618598	-21	thunderbird	20:04:03	8
4016114	99	36	28,5	cyclictest	618598	-21	thunderbird	22:45:09	8
4015644	2	36	32,3	sleep0	0	-21	swapper/0	19:08:52	0
4014234	2	36	34,1	sleep10	0	-21	swapper/10	19:05:18	2
4016138	99	35	34,1	cyclictest	128602	-21	kworker/u32:0+events_unbound	23:55:17	2
4016135	99	35	34,1	cyclictest	105	1	ktimers/9	23:43:53	15
4016114	99	35	33,2	cyclictest	0	-21	swapper/2	20:45:35	8
4016114	99	35	29,6	cyclictest	618598	-21	thunderbird	21:26:33	8
4016114	99	35	29,3	cyclictest	618598	-21	thunderbird	22:05:21	8
4016114	99	35	28,6	cyclictest	618598	-21	thunderbird	00:21:23	8
4016114	99	35	0,32	cyclictest	618598	-21	thunderbird	23:47:19	8
4016114	99	35	0,32	cyclictest	618598	-21	thunderbird	23:15:37	8
4016114	99	35	0,32	cyclictest	618598	-21	thunderbird	19:42:46	8
4016114	99	35	0,32	cyclictest	618598	-21	thunderbird	19:14:05	8
4015566	2	35	33,1	sleep2	0	-21	swapper/2	19:07:50	8
4015486	2	35	33,1	sleep7	0	-21	swapper/7	19:06:51	13
4015407	2	35	33,1	sleep11	0	-21	swapper/11	19:05:51	3
4016135	99	34	34,0	cyclictest	0	-21	swapper/9	00:35:05	15
4016135	99	34	34,0	cyclictest	0	-21	swapper/9	00:13:59	15
4016114	99	34	5,29	cyclictest	0	-21	swapper/2	20:51:51	8
4016114	99	34	34,0	cyclictest	0	-21	swapper/2	23:07:29	8
4016114	99	34	3,29	cyclictest	42	1	ktimers/2	21:40:53	8
4016114	99	34	32,2	cyclictest	0	-21	swapper/2	20:22:25	8
4016114	99	34	3,0	cyclictest	0	-21	swapper/2	20:44:17	8
4016114	99	34	30,1	cyclictest	0	-21	swapper/2	00:04:03	8
4016114	99	34	29,5	cyclictest	618598	-21	thunderbird	19:33:16	8
4016114	99	34	29,3	cyclictest	618598	-21	thunderbird	21:52:29	8
4016114	99	34	29,3	cyclictest	618598	-21	thunderbird	20:58:33	8
4016114	99	34	29,3	cyclictest	618598	-21	thunderbird	19:38:59	8
4016114	99	34	28,3	cyclictest	618598	-21	thunderbird	23:31:19	8
4016114	99	34	28,3	cyclictest	618598	-21	thunderbird	23:31:19	8
4016114	99	34	28,3	cyclictest	618598	-21	thunderbird	19:46:41	8
4016114	99	34	28,3	cyclictest	618598	-21	thunderbird	19:29:49	8
4016114	99	34	28,3	cyclictest	618598	-21	thunderbird	19:24:38	8
4016114	99	34	1,31	cyclictest	42	1	ktimers/2	20:37:11	8
4016114	99	34	0,31	cyclictest	618598	-21	thunderbird	23:55:39	8
4016114	99	34	0,31	cyclictest	618598	-21	thunderbird	00:13:19	8
4015492	2	34	31,2	sleep12	0	-21	swapper/12	19:06:55	4
4016152	99	33	32,1	cyclictest	4117761	-21	kworker/u32:1+events_unbound	21:20:16	7
4016144	99	33	27,5	cyclictest	1774	-21	snmpd	21:35:49	4
4016135	99	33	33,0	cyclictest	0	-21	swapper/9	21:50:05	15
4016135	99	33	33,0	cyclictest	0	-21	swapper/9	21:17:25	15
4016135	99	33	33,0	cyclictest	0	-21	swapper/9	00:30:15	15
4016135	99	33	32,1	cyclictest	0	-21	swapper/9	23:33:39	15
4016135	99	33	32,1	cyclictest	0	-21	swapper/9	23:33:39	15
4016135	99	33	32,1	cyclictest	0	-21	swapper/9	22:53:58	15
4016135	99	33	32,1	cyclictest	0	-21	swapper/9	00:03:35	15
4016135	99	33	31,2	cyclictest	4096535	-21	kworker/u32:1+events_unbound	20:45:13	15
4016135	99	33	30,1	cyclictest	68644	-21	kworker/u32:2+events_unbound	23:50:27	15
4016133	99	33	33,0	cyclictest	3967243	-1	kworker/u33:2+i915_flip	22:20:03	14
4016114	99	33	5,2	cyclictest	618598	-21	thunderbird	23:38:13	8
4016114	99	33	4,0	cyclictest	0	-21	swapper/2	00:28:35	8
4016114	99	33	3,30	cyclictest	42	1	ktimers/2	23:23:23	8
4016114	99	33	3,30	cyclictest	42	1	ktimers/2	23:23:23	8
4016114	99	33	33,0	cyclictest	0	-21	swapper/2	19:55:53	8
4016114	99	33	31,2	cyclictest	0	-21	swapper/2	22:44:55	8
4016114	99	33	31,0	cyclictest	0	-21	swapper/2	20:18:13	8
4016114	99	33	29,4	cyclictest	618598	-21	thunderbird	20:30:37	8
4016114	99	33	29,4	cyclictest	618598	-21	thunderbird	20:30:37	8
4016114	99	33	28,3	cyclictest	71468	-21	ssh	23:03:27	8
4016114	99	33	27,4	cyclictest	618598	-21	thunderbird	21:58:43	8
4016114	99	33	27,3	cyclictest	618698	-21	WRScene~ilder#1	21:35:15	8
4016114	99	33	27,3	cyclictest	618598	-21	thunderbird	22:23:23	8
4016114	99	33	0,31	cyclictest	618598	-21	thunderbird	22:51:49	8
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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