OSADL QA Farm on Real-time of Mainline Linux

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

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: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System r0s0s.osadl.org (updated Fri Jan 16, 2026 12:46:24)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1790379	2	303	295,5	sleep7	0	-21	swapper/7	07:07:12	7
1790548	2	297	279,11	sleep3	0	-21	swapper/3	07:09:34	3
1790490	2	297	257,13	sleep1	0	-21	swapper/1	07:08:43	1
1790486	2	292	257,27	sleep6	0	-21	swapper/6	07:08:41	6
1790417	2	291	257,26	sleep0	0	-21	swapper/0	07:07:46	0
1790339	2	286	265,13	sleep5	0	-21	swapper/5	07:06:39	5
1788483	2	286	267,12	sleep4	0	-21	swapper/4	07:05:08	4
1790482	2	284	265,12	sleep2	0	-21	swapper/2	07:08:36	2
1791057	99	35	30,4	cyclictest	449069	-21	snmpd	11:18:29	6
1791058	99	34	30,3	cyclictest	449069	-21	snmpd	10:23:48	7
1791057	99	34	0,1	cyclictest	0	-21	swapper/6	10:40:12	6
1791055	99	34	30,3	cyclictest	449069	-21	snmpd	09:34:10	4
1791055	99	34	0,1	cyclictest	0	-21	swapper/4	12:09:25	4
1791052	99	34	0,31	cyclictest	0	-21	swapper/1	09:48:04	1
1791052	99	34	0,31	cyclictest	0	-21	swapper/1	08:56:00	1
1791058	99	33	30,2	cyclictest	449069	-21	snmpd	12:36:34	7
1791057	99	33	30,2	cyclictest	449069	-21	snmpd	08:08:52	6
1791057	99	33	0,30	cyclictest	0	-21	swapper/6	08:27:18	6
1791057	99	33	0,30	cyclictest	0	-21	swapper/6	07:47:55	6
1791056	99	33	0,30	cyclictest	0	-21	swapper/5	11:40:53	5
1791056	99	33	0,30	cyclictest	0	-21	swapper/5	11:32:22	5
1791055	99	33	0,30	cyclictest	0	-21	swapper/4	09:53:23	4
1791053	99	33	30,2	cyclictest	449069	-21	snmpd	08:00:08	2
1791053	99	33	30,2	cyclictest	1835236	-21	cat	08:35:15	2
1791053	99	33	0,31	cyclictest	0	-21	swapper/2	09:55:19	2
1791052	99	33	30,2	cyclictest	449069	-21	snmpd	10:09:27	1
1791052	99	33	30,2	cyclictest	1911129	-21	cat	11:05:13	1
1791052	99	33	0,30	cyclictest	0	-21	swapper/1	09:24:13	1
1791051	99	33	31,2	cyclictest	449069	-21	snmpd	11:47:53	0
1791051	99	33	30,2	cyclictest	449069	-21	snmpd	07:31:07	0
1791051	99	33	30,2	cyclictest	1829244	-21	kworker/0:0+events	08:35:01	0
1791058	99	32	30,1	cyclictest	449069	-21	snmpd	12:20:09	7
1791058	99	32	30,1	cyclictest	449069	-21	snmpd	10:41:34	7
1791058	99	32	30,1	cyclictest	449069	-21	snmpd	10:08:48	7
1791058	99	32	30,1	cyclictest	449069	-21	snmpd	09:00:36	7
1791058	99	32	30,1	cyclictest	449069	-21	snmpd	08:45:39	7
1791058	99	32	28,3	cyclictest	449069	-21	snmpd	09:29:08	7
1791058	99	32	28,3	cyclictest	449069	-21	snmpd	09:29:07	7
1791058	99	32	28,3	cyclictest	449069	-21	snmpd	07:56:05	7
1791057	99	32	30,2	cyclictest	449069	-21	snmpd	07:10:04	6
1791057	99	32	30,1	cyclictest	449069	-21	snmpd	08:56:12	6
1791057	99	32	29,2	cyclictest	449069	-21	snmpd	12:04:55	6
1791057	99	32	29,2	cyclictest	449069	-21	snmpd	11:28:11	6
1791057	99	32	29,2	cyclictest	449069	-21	snmpd	09:48:56	6
1791057	99	32	29,2	cyclictest	449069	-21	snmpd	09:01:43	6
1791057	99	32	27,4	cyclictest	449069	-21	snmpd	07:25:12	6
1791057	99	32	0,31	cyclictest	0	-21	swapper/6	09:16:19	6
1791057	99	32	0,31	cyclictest	0	-21	swapper/6	07:35:10	6
1791057	99	32	0,31	cyclictest	0	-21	swapper/6	07:35:10	6
1791057	99	32	0,30	cyclictest	0	-21	swapper/6	10:37:13	6
1791057	99	32	0,30	cyclictest	0	-21	swapper/6	08:50:30	6
1791057	99	32	0,30	cyclictest	0	-21	swapper/6	08:12:53	6
1791056	99	32	30,2	cyclictest	449069	-21	snmpd	09:27:40	5
1791056	99	32	30,2	cyclictest	449069	-21	snmpd	09:27:39	5
1791056	99	32	29,2	cyclictest	1817734	-21	cat	08:00:15	5
1791056	99	32	0,31	cyclictest	0	-21	swapper/5	09:24:31	5
1791056	99	32	0,31	cyclictest	0	-21	swapper/5	08:25:21	5
1791056	99	32	0,30	cyclictest	0	-21	swapper/5	10:30:13	5
1791056	99	32	0,30	cyclictest	0	-21	swapper/5	09:31:23	5
1791055	99	32	30,1	cyclictest	449069	-21	snmpd	11:02:29	4
1791055	99	32	29,2	cyclictest	449069	-21	snmpd	10:18:33	4
1791055	99	32	29,2	cyclictest	449069	-21	snmpd	08:03:02	4
1791055	99	32	0,31	cyclictest	0	-21	swapper/4	10:08:51	4
1791054	99	32	30,2	cyclictest	449069	-21	snmpd	11:27:05	3
1791054	99	32	30,2	cyclictest	1908636	-21	cat	11:00:15	3
1791053	99	32	30,2	cyclictest	449069	-21	snmpd	11:51:23	2
1791053	99	32	30,2	cyclictest	1848031	-21	cat	09:00:15	2
1791053	99	32	30,2	cyclictest	1810196	-21	cat	07:45:13	2
1791053	99	32	29,2	cyclictest	1890859	-21	cat	10:25:16	2
1791053	99	32	0,30	cyclictest	0	-21	swapper/2	08:19:10	2
1791052	99	32	30,2	cyclictest	449069	-21	snmpd	10:35:24	1
1791052	99	32	30,1	cyclictest	449069	-21	snmpd	12:38:58	1
1791052	99	32	30,1	cyclictest	449069	-21	snmpd	11:40:18	1
1791052	99	32	30,1	cyclictest	449069	-21	snmpd	11:13:53	1
1791052	99	32	30,1	cyclictest	449069	-21	snmpd	10:45:58	1
1791052	99	32	30,1	cyclictest	449069	-21	snmpd	08:46:54	1
1791052	99	32	30,1	cyclictest	449069	-21	snmpd	08:15:05	1
1791052	99	32	30,1	cyclictest	449069	-21	snmpd	07:51:47	1
1791052	99	32	29,2	cyclictest	449069	-21	snmpd	08:27:53	1
1791052	99	32	0,31	cyclictest	0	-21	swapper/1	10:50:04	1
1791051	99	32	30,2	cyclictest	449069	-21	snmpd	12:22:39	0
1791051	99	32	30,2	cyclictest	449069	-21	snmpd	08:10:29	0
1791051	99	32	0,31	cyclictest	0	-21	swapper/0	10:19:57	0
1791058	99	31	30,1	cyclictest	449069	-21	snmpd	11:45:24	7
1791058	99	31	30,1	cyclictest	449069	-21	snmpd	08:06:44	7
1791058	99	31	29,1	cyclictest	449069	-21	snmpd	12:32:19	7
1791058	99	31	29,1	cyclictest	449069	-21	snmpd	10:46:10	7
1791058	99	31	29,1	cyclictest	449069	-21	snmpd	07:42:55	7
1791058	99	31	28,3	cyclictest	449069	-21	snmpd	11:59:18	7
1791058	99	31	0,31	cyclictest	0	-21	swapper/7	11:44:00	7
1791058	99	31	0,31	cyclictest	0	-21	swapper/7	10:04:47	7
1791058	99	31	0,30	cyclictest	0	-21	swapper/7	11:24:05	7
1791058	99	31	0,30	cyclictest	0	-21	swapper/7	11:24:04	7
1791058	99	31	0,30	cyclictest	0	-21	swapper/7	11:15:43	7
1791058	99	31	0,30	cyclictest	0	-21	swapper/7	09:05:15	7
1791058	99	31	0,30	cyclictest	0	-21	swapper/7	08:31:09	7
1791058	99	31	0,1	cyclictest	0	-21	swapper/7	08:21:38	7
1791057	99	31	28,2	cyclictest	449069	-21	snmpd	07:59:01	6
1791057	99	31	28,2	cyclictest	1873351	-21	cat	09:50:13	6
1791057	99	31	0,31	cyclictest	0	-21	swapper/6	11:53:57	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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