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
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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.

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 Wed Dec 31, 2025 12:46:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1697162	2	307	298,6	sleep4	0	-21	swapper/4	07:06:03	4
1697422	2	300	281,12	sleep3	0	-21	swapper/3	07:09:40	3
1697269	2	294	273,13	sleep5	0	-21	swapper/5	07:07:33	5
1697230	2	294	267,20	sleep2	0	-21	swapper/2	07:06:58	2
1697387	2	290	272,11	sleep6	0	-21	swapper/6	07:09:10	6
1697217	2	289	269,13	sleep7	0	-21	swapper/7	07:06:46	7
1697141	2	288	269,12	sleep1	0	-21	swapper/1	07:05:44	1
1697255	2	287	266,13	sleep0	0	-21	swapper/0	07:07:19	0
1697921	99	35	29,5	cyclictest	870	-21	snmpd	08:29:27	5
1697921	99	34	30,4	cyclictest	870	-21	snmpd	12:11:49	5
1697918	99	34	0,33	cyclictest	0	-21	swapper/2	10:36:07	2
1697917	99	34	31,2	cyclictest	870	-21	snmpd	07:52:53	1
1697923	99	33	30,2	cyclictest	870	-21	snmpd	10:18:54	7
1697923	99	33	30,2	cyclictest	870	-21	snmpd	10:12:33	7
1697923	99	33	30,2	cyclictest	1782953	-21	cat	09:55:17	7
1697923	99	33	0,30	cyclictest	0	-21	swapper/7	08:58:21	7
1697921	99	33	30,2	cyclictest	870	-21	snmpd	09:46:02	5
1697921	99	33	29,4	cyclictest	870	-21	snmpd	11:54:00	5
1697921	99	33	0,31	cyclictest	0	-21	swapper/5	10:12:06	5
1697920	99	33	30,2	cyclictest	870	-21	snmpd	08:54:48	4
1697920	99	33	30,2	cyclictest	870	-21	snmpd	08:07:29	4
1697920	99	33	30,2	cyclictest	870	-21	snmpd	07:17:58	4
1697920	99	33	30,2	cyclictest	1855778	-21	cat	12:20:14	4
1697920	99	33	0,30	cyclictest	0	-21	swapper/4	10:48:04	4
1697918	99	33	30,2	cyclictest	870	-21	snmpd	10:00:08	2
1697918	99	33	30,2	cyclictest	870	-21	snmpd	09:25:52	2
1697918	99	33	30,2	cyclictest	870	-21	snmpd	09:25:52	2
1697918	99	33	28,4	cyclictest	870	-21	snmpd	11:26:29	2
1697918	99	33	0,30	cyclictest	0	-21	swapper/2	08:11:35	2
1697917	99	33	30,2	cyclictest	870	-21	snmpd	12:19:01	1
1697917	99	33	30,2	cyclictest	870	-21	snmpd	10:32:33	1
1697917	99	33	30,2	cyclictest	870	-21	snmpd	08:17:23	1
1697917	99	33	29,3	cyclictest	870	-21	snmpd	09:02:54	1
1697916	99	33	30,2	cyclictest	870	-21	snmpd	07:27:04	0
1697923	99	32	30,1	cyclictest	870	-21	snmpd	11:19:08	7
1697923	99	32	30,1	cyclictest	870	-21	snmpd	10:44:34	7
1697923	99	32	29,2	cyclictest	870	-21	snmpd	12:09:13	7
1697923	99	32	29,2	cyclictest	870	-21	snmpd	11:00:04	7
1697923	99	32	29,2	cyclictest	870	-21	snmpd	08:35:15	7
1697923	99	32	29,2	cyclictest	1775450	-21	cat	09:40:15	7
1697923	99	32	0,31	cyclictest	0	-21	swapper/7	10:21:33	7
1697921	99	32	30,2	cyclictest	870	-21	snmpd	11:33:48	5
1697921	99	32	30,2	cyclictest	870	-21	snmpd	10:29:51	5
1697921	99	32	30,2	cyclictest	870	-21	snmpd	08:51:48	5
1697921	99	32	30,2	cyclictest	1726841	-21	cat	08:05:15	5
1697921	99	32	0,31	cyclictest	0	-21	swapper/5	09:41:21	5
1697920	99	32	30,2	cyclictest	870	-21	snmpd	07:10:32	4
1697920	99	32	30,1	cyclictest	870	-21	snmpd	08:46:15	4
1697920	99	32	0,30	cyclictest	0	-21	swapper/4	07:40:45	4
1697919	99	32	30,2	cyclictest	870	-21	snmpd	11:55:15	3
1697919	99	32	30,2	cyclictest	870	-21	snmpd	11:12:02	3
1697919	99	32	30,2	cyclictest	870	-21	snmpd	07:55:00	3
1697919	99	32	30,2	cyclictest	870	-21	snmpd	07:45:35	3
1697919	99	32	29,2	cyclictest	870	-21	snmpd	09:47:26	3
1697919	99	32	29,2	cyclictest	870	-21	snmpd	09:35:02	3
1697919	99	32	28,3	cyclictest	1753762	-21	kworker/u16:3+flush-8:0	09:20:00	3
1697918	99	32	30,1	cyclictest	870	-21	snmpd	07:26:13	2
1697918	99	32	29,2	cyclictest	870	-21	snmpd	08:35:36	2
1697918	99	32	29,2	cyclictest	1772946	-21	cat	09:35:15	2
1697918	99	32	27,4	cyclictest	870	-21	snmpd	10:07:57	2
1697918	99	32	0,31	cyclictest	0	-21	swapper/2	08:05:16	2
1697918	99	32	0,31	cyclictest	0	-21	swapper/2	07:40:41	2
1697918	99	32	0,30	cyclictest	0	-21	swapper/2	07:16:44	2
1697917	99	32	30,1	cyclictest	870	-21	snmpd	09:27:13	1
1697917	99	32	30,1	cyclictest	870	-21	snmpd	09:27:13	1
1697917	99	32	29,2	cyclictest	870	-21	snmpd	08:27:18	1
1697917	99	32	0,31	cyclictest	0	-21	swapper/1	12:38:41	1
1697917	99	32	0,31	cyclictest	0	-21	swapper/1	12:25:04	1
1697917	99	32	0,31	cyclictest	0	-21	swapper/1	12:23:10	1
1697917	99	32	0,31	cyclictest	0	-21	swapper/1	11:45:45	1
1697916	99	32	30,2	cyclictest	870	-21	snmpd	09:17:13	0
1697916	99	32	30,2	cyclictest	870	-21	snmpd	08:13:44	0
1697916	99	32	30,1	cyclictest	870	-21	snmpd	10:12:51	0
1697916	99	32	30,1	cyclictest	870	-21	snmpd	08:33:51	0
1697916	99	32	30,1	cyclictest	870	-21	snmpd	08:18:59	0
1697916	99	32	29,2	cyclictest	870	-21	snmpd	10:40:04	0
1697916	99	32	0,31	cyclictest	0	-21	swapper/0	09:45:15	0
1697916	99	32	0,31	cyclictest	0	-21	swapper/0	07:30:16	0
1697916	99	32	0,30	cyclictest	0	-21	swapper/0	08:03:36	0
1697923	99	31	30,1	cyclictest	870	-21	snmpd	12:21:31	7
1697923	99	31	30,1	cyclictest	870	-21	snmpd	11:36:42	7
1697923	99	31	30,1	cyclictest	870	-21	snmpd	09:27:28	7
1697923	99	31	30,1	cyclictest	870	-21	snmpd	09:27:28	7
1697923	99	31	29,1	cyclictest	870	-21	snmpd	11:42:30	7
1697923	99	31	28,2	cyclictest	870	-21	snmpd	12:28:47	7
1697923	99	31	28,2	cyclictest	870	-21	snmpd	11:56:54	7
1697923	99	31	24,6	cyclictest	870	-21	snmpd	09:35:15	7
1697923	99	31	0,30	cyclictest	0	-21	swapper/7	11:10:29	7
1697923	99	31	0,30	cyclictest	0	-21	swapper/7	10:58:52	7
1697923	99	31	0,30	cyclictest	0	-21	swapper/7	09:10:31	7
1697923	99	31	0,30	cyclictest	0	-21	swapper/7	09:00:03	7
1697923	99	31	0,28	cyclictest	0	-21	swapper/7	12:35:23	7
1697923	99	31	0,1	cyclictest	0	-21	swapper/7	12:34:05	7
1697923	99	31	0,1	cyclictest	0	-21	swapper/7	07:25:46	7
1697922	99	31	30,1	cyclictest	870	-21	snmpd	12:37:50	6
1697922	99	31	30,1	cyclictest	870	-21	snmpd	12:21:37	6
1697922	99	31	30,1	cyclictest	870	-21	snmpd	10:35:51	6
1697922	99	31	30,1	cyclictest	870	-21	snmpd	10:22:30	6
1697922	99	31	30,1	cyclictest	870	-21	snmpd	08:39:49	6
1697922	99	31	30,1	cyclictest	870	-21	snmpd	07:21:29	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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