OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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
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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 rack0slot6s.osadl.org (updated Fri Jul 24, 2026 00:46:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2787230	2	282	275,4	sleep19	0	-21	swapper/19	19:09:55	11
2786929	2	254	247,4	sleep8	0	-21	swapper/8	19:06:03	18
2787147	2	251	207,34	sleep18	0	-21	swapper/18	19:08:53	10
2787232	2	249	211,30	sleep0	0	-21	swapper/0	19:09:55	0
2786935	2	241	234,4	sleep13	0	-21	swapper/13	19:06:07	5
2787236	2	240	233,4	sleep2	0	-21	swapper/2	19:09:58	12
2787083	2	238	218,12	sleep9	0	-21	swapper/9	19:08:04	19
2787144	2	236	195,12	sleep15	0	-21	swapper/15	19:08:49	7
2787110	2	233	217,9	sleep11	0	-21	swapper/11	19:08:26	3
2787182	2	232	213,12	sleep5	0	-21	swapper/5	19:09:20	15
2787092	2	232	213,12	sleep17	0	-21	swapper/17	19:08:12	9
2787077	2	232	216,10	sleep3	0	-21	swapper/3	19:07:57	13
2787039	2	232	212,12	sleep10	0	-21	swapper/10	19:07:25	2
2787012	2	231	211,13	sleep6	0	-21	swapper/6	19:07:00	16
2783953	2	231	211,12	sleep16	0	-21	swapper/16	19:05:09	8
2787086	2	229	210,12	sleep12	0	-21	swapper/12	19:08:06	4
2787100	2	228	209,11	sleep4	0	-21	swapper/4	19:08:18	14
2787081	2	225	206,12	sleep7	0	-21	swapper/7	19:08:01	17
2787178	2	222	204,11	sleep1	0	-21	swapper/1	19:09:17	1
2786874	2	221	202,12	sleep14	0	-21	swapper/14	19:05:28	6
2787594	99	86	6,35	cyclictest	0	-21	swapper/2	00:18:29	12
2787595	99	59	6,33	cyclictest	0	-21	swapper/3	21:03:30	13
2787643	99	35	0,35	cyclictest	0	-21	swapper/18	19:38:59	10
2787617	99	35	35,0	cyclictest	0	-21	swapper/9	20:04:58	19
2787617	99	35	0,35	cyclictest	0	-21	swapper/9	20:37:59	19
2787611	99	35	0,0	cyclictest	0	-21	swapper/8	23:39:59	18
2787643	99	34	34,0	cyclictest	0	-21	swapper/18	23:26:58	10
2787643	99	34	34,0	cyclictest	0	-21	swapper/18	21:25:59	10
2787638	99	34	0,33	cyclictest	0	-21	swapper/16	00:10:59	8
2787611	99	34	0,33	cyclictest	0	-21	swapper/8	20:53:58	18
2787602	99	34	33,1	cyclictest	0	-21	swapper/5	00:10:59	15
2787643	99	33	33,0	cyclictest	0	-21	swapper/18	19:28:59	10
2787643	99	33	0,33	cyclictest	0	-21	swapper/18	22:50:59	10
2787640	99	33	32,0	cyclictest	0	-21	swapper/17	00:16:58	9
2787638	99	33	32,0	cyclictest	0	-21	swapper/16	22:40:59	8
2787638	99	33	32,0	cyclictest	0	-21	swapper/16	22:40:58	8
2787632	99	33	0,33	cyclictest	0	-21	swapper/14	00:34:58	6
2787632	99	33	0,0	cyclictest	0	-21	swapper/14	00:07:59	6
2787627	99	33	0,32	cyclictest	0	-21	swapper/12	21:38:58	4
2787627	99	33	0,0	cyclictest	0	-21	swapper/12	00:25:59	4
2787617	99	33	33,0	cyclictest	0	-21	swapper/9	20:21:58	19
2787617	99	33	33,0	cyclictest	0	-21	swapper/9	19:30:58	19
2787617	99	33	0,33	cyclictest	0	-21	swapper/9	20:59:58	19
2787611	99	33	0,33	cyclictest	0	-21	swapper/8	23:09:59	18
2787611	99	33	0,33	cyclictest	0	-21	swapper/8	21:22:58	18
2787611	99	33	0,0	cyclictest	0	-21	swapper/8	22:46:59	18
2787611	99	33	0,0	cyclictest	0	-21	swapper/8	22:46:58	18
2787607	99	33	0,0	cyclictest	0	-21	swapper/7	22:52:58	17
2787605	99	33	0,0	cyclictest	0	-21	swapper/6	00:10:59	16
2787600	99	33	33,0	cyclictest	0	-21	swapper/4	00:10:59	14
2787590	99	33	0,32	cyclictest	0	-21	swapper/1	22:53:59	1
2787586	99	33	0,32	cyclictest	0	-21	swapper/0	19:59:59	0
2787643	99	32	32,0	cyclictest	0	-21	swapper/18	23:48:59	10
2787643	99	32	32,0	cyclictest	0	-21	swapper/18	22:35:58	10
2787643	99	32	32,0	cyclictest	0	-21	swapper/18	22:35:58	10
2787643	99	32	32,0	cyclictest	0	-21	swapper/18	20:49:58	10
2787643	99	32	32,0	cyclictest	0	-21	swapper/18	20:31:59	10
2787643	99	32	32,0	cyclictest	0	-21	swapper/18	19:45:58	10
2787634	99	32	32,0	cyclictest	0	-21	swapper/15	21:44:58	7
2787634	99	32	29,3	cyclictest	0	-21	swapper/15	00:23:58	7
2787629	99	32	32,0	cyclictest	0	-21	swapper/13	21:47:59	5
2787629	99	32	32,0	cyclictest	0	-21	swapper/13	20:58:59	5
2787629	99	32	32,0	cyclictest	0	-21	swapper/13	20:26:59	5
2787629	99	32	0,32	cyclictest	0	-21	swapper/13	21:56:59	5
2787627	99	32	32,0	cyclictest	0	-21	swapper/12	22:59:58	4
2787627	99	32	32,0	cyclictest	0	-21	swapper/12	22:13:58	4
2787627	99	32	32,0	cyclictest	0	-21	swapper/12	22:03:59	4
2787627	99	32	32,0	cyclictest	0	-21	swapper/12	20:13:59	4
2787627	99	32	31,1	cyclictest	0	-21	swapper/12	21:09:59	4
2787627	99	32	31,0	cyclictest	0	-21	swapper/12	22:39:58	4
2787627	99	32	31,0	cyclictest	0	-21	swapper/12	22:39:58	4
2787623	99	32	0,31	cyclictest	0	-21	swapper/11	23:48:59	3
2787623	99	32	0,31	cyclictest	0	-21	swapper/11	21:25:59	3
2787621	99	32	31,0	cyclictest	0	-21	swapper/10	21:18:58	2
2787621	99	32	31,0	cyclictest	0	-21	swapper/10	20:36:58	2
2787621	99	32	30,0	cyclictest	0	-21	swapper/10	22:27:59	2
2787617	99	32	32,0	cyclictest	0	-21	swapper/9	23:57:59	19
2787617	99	32	32,0	cyclictest	0	-21	swapper/9	23:36:59	19
2787617	99	32	32,0	cyclictest	0	-21	swapper/9	23:24:59	19
2787617	99	32	32,0	cyclictest	0	-21	swapper/9	20:16:58	19
2787617	99	32	0,0	cyclictest	0	-21	swapper/9	22:32:59	19
2787617	99	32	0,0	cyclictest	0	-21	swapper/9	22:32:59	19
2787611	99	32	0,32	cyclictest	0	-21	swapper/8	23:03:58	18
2787607	99	32	32,0	cyclictest	0	-21	swapper/7	22:44:59	17
2787607	99	32	32,0	cyclictest	0	-21	swapper/7	22:44:58	17
2787607	99	32	0,32	cyclictest	0	-21	swapper/7	20:18:48	17
2787602	99	32	31,0	cyclictest	0	-21	swapper/5	22:40:58	15
2787602	99	32	31,0	cyclictest	0	-21	swapper/5	22:40:58	15
2787594	99	32	20,11	cyclictest	0	-21	swapper/2	20:46:58	12
2787590	99	32	31,1	cyclictest	0	-21	swapper/1	20:02:59	1
2787590	99	32	0,32	cyclictest	0	-21	swapper/1	22:19:58	1
2787590	99	32	0,31	cyclictest	0	-21	swapper/1	23:14:59	1
2787590	99	32	0,31	cyclictest	0	-21	swapper/1	21:27:59	1
2787590	99	32	0,31	cyclictest	0	-21	swapper/1	20:34:59	1
2787586	99	32	0,32	cyclictest	0	-21	swapper/0	00:18:58	0
2787586	99	32	0,32	cyclictest	0	-21	swapper/0	00:02:59	0
2787586	99	32	0,31	cyclictest	0	-21	swapper/0	22:37:59	0
2787586	99	32	0,31	cyclictest	0	-21	swapper/0	22:37:58	0
2787586	99	32	0,31	cyclictest	0	-21	swapper/0	21:44:58	0
2787586	99	32	0,31	cyclictest	0	-21	swapper/0	21:12:59	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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