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 Sat Jan 17, 2026 00:46:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2185511	2	300	280,13	sleep0	0	-21	swapper/0	19:08:10	0
2185544	2	295	279,9	sleep4	0	-21	swapper/4	19:08:38	4
2184823	2	294	266,20	sleep2	0	-21	swapper/2	19:05:31	2
2185432	2	293	259,26	sleep7	0	-21	swapper/7	19:07:04	7
2185420	2	291	275,10	sleep6	0	-21	swapper/6	19:06:55	6
2185554	2	288	269,12	sleep5	0	-21	swapper/5	19:08:47	5
2185369	2	288	268,13	sleep1	0	-21	swapper/1	19:06:10	1
2183545	2	288	268,13	sleep3	0	-21	swapper/3	19:05:08	3
2186122	99	36	30,5	cyclictest	2195258	-21	cat	19:25:15	6
2186119	99	35	28,6	cyclictest	449069	-21	snmpd	00:35:56	3
2186118	99	35	0,32	cyclictest	0	-21	swapper/2	19:45:11	2
2186120	99	34	30,3	cyclictest	449069	-21	snmpd	23:17:47	4
2186119	99	34	0,31	cyclictest	0	-21	swapper/3	21:30:14	3
2186119	99	34	0,1	cyclictest	0	-21	swapper/3	00:25:52	3
2186116	99	34	0,33	cyclictest	0	-21	swapper/1	22:48:37	1
2186123	99	33	30,2	cyclictest	449069	-21	snmpd	23:49:36	7
2186123	99	33	30,2	cyclictest	449069	-21	snmpd	22:59:52	7
2186123	99	33	30,2	cyclictest	449069	-21	snmpd	22:16:12	7
2186123	99	33	30,2	cyclictest	449069	-21	snmpd	20:13:42	7
2186123	99	33	30,2	cyclictest	2347025	-21	cat	00:25:14	7
2186123	99	33	0,30	cyclictest	0	-21	swapper/7	23:52:30	7
2186122	99	33	30,2	cyclictest	449069	-21	snmpd	21:34:16	6
2186122	99	33	30,2	cyclictest	449069	-21	snmpd	21:26:16	6
2186122	99	33	30,2	cyclictest	449069	-21	snmpd	19:39:11	6
2186122	99	33	30,2	cyclictest	2245558	-21	cat	21:05:14	6
2186120	99	33	29,3	cyclictest	449069	-21	snmpd	19:17:55	4
2186119	99	33	30,2	cyclictest	449069	-21	snmpd	21:50:20	3
2186119	99	33	30,2	cyclictest	449069	-21	snmpd	21:50:20	3
2186119	99	33	0,30	cyclictest	0	-21	swapper/3	21:14:10	3
2186119	99	33	0,30	cyclictest	0	-21	swapper/3	20:11:05	3
2186119	99	33	0,30	cyclictest	0	-21	swapper/3	19:52:15	3
2186118	99	33	30,2	cyclictest	449069	-21	snmpd	23:43:14	2
2186118	99	33	30,2	cyclictest	449069	-21	snmpd	23:43:14	2
2186118	99	33	30,2	cyclictest	2276129	-21	cat	22:05:12	2
2186118	99	33	30,2	cyclictest	2245571	-21	cat	21:05:15	2
2186116	99	33	30,2	cyclictest	449069	-21	snmpd	22:19:48	1
2186116	99	33	0,30	cyclictest	0	-21	swapper/1	00:22:18	1
2186123	99	32	30,2	cyclictest	449069	-21	snmpd	20:41:12	7
2186123	99	32	30,1	cyclictest	449069	-21	snmpd	21:56:59	7
2186123	99	32	30,1	cyclictest	449069	-21	snmpd	19:50:25	7
2186123	99	32	29,2	cyclictest	449069	-21	snmpd	19:12:12	7
2186123	99	32	29,2	cyclictest	2336753	-21	cat	00:05:16	7
2186123	99	32	29,2	cyclictest	2296174	-21	cat	22:45:13	7
2186123	99	32	29,2	cyclictest	2293689	-21	cat	22:40:14	7
2186123	99	32	0,31	cyclictest	0	-21	swapper/7	20:46:22	7
2186122	99	32	30,1	cyclictest	449069	-21	snmpd	19:57:30	6
2186122	99	32	30,1	cyclictest	449069	-21	snmpd	19:57:29	6
2186122	99	32	30,1	cyclictest	449069	-21	snmpd	00:30:43	6
2186122	99	32	29,2	cyclictest	2238037	-21	cat	20:50:14	6
2186122	99	32	0,31	cyclictest	0	-21	swapper/6	23:49:48	6
2186122	99	32	0,31	cyclictest	0	-21	swapper/6	23:39:53	6
2186121	99	32	30,2	cyclictest	449069	-21	snmpd	22:33:00	5
2186121	99	32	30,2	cyclictest	449069	-21	snmpd	20:53:52	5
2186121	99	32	30,2	cyclictest	449069	-21	snmpd	00:18:00	5
2186120	99	32	30,2	cyclictest	449069	-21	snmpd	19:59:50	4
2186120	99	32	30,2	cyclictest	449069	-21	snmpd	19:59:50	4
2186120	99	32	30,1	cyclictest	449069	-21	snmpd	23:58:36	4
2186120	99	32	30,1	cyclictest	449069	-21	snmpd	20:22:50	4
2186120	99	32	30,1	cyclictest	449069	-21	snmpd	19:35:37	4
2186120	99	32	29,2	cyclictest	449069	-21	snmpd	22:22:03	4
2186120	99	32	29,2	cyclictest	449069	-21	snmpd	21:33:10	4
2186120	99	32	29,2	cyclictest	449069	-21	snmpd	20:57:03	4
2186120	99	32	28,3	cyclictest	449069	-21	snmpd	19:28:37	4
2186120	99	32	0,31	cyclictest	0	-21	swapper/4	21:01:34	4
2186119	99	32	30,1	cyclictest	449069	-21	snmpd	00:01:51	3
2186119	99	32	29,2	cyclictest	449069	-21	snmpd	22:47:56	3
2186119	99	32	29,2	cyclictest	2189992	-21	cat	19:15:14	3
2186119	99	32	28,3	cyclictest	0	-21	swapper/3	20:42:42	3
2186119	99	32	0,31	cyclictest	0	-21	swapper/3	19:55:03	3
2186119	99	32	0,31	cyclictest	0	-21	swapper/3	19:55:02	3
2186119	99	32	0,30	cyclictest	0	-21	swapper/3	23:55:48	3
2186119	99	32	0,30	cyclictest	0	-21	swapper/3	19:46:49	3
2186119	99	32	0,29	cyclictest	0	-21	swapper/3	21:56:39	3
2186118	99	32	29,2	cyclictest	449069	-21	snmpd	19:40:16	2
2186118	99	32	29,2	cyclictest	2218040	-21	cat	20:10:14	2
2186118	99	32	0,31	cyclictest	0	-21	swapper/2	23:25:14	2
2186118	99	32	0,31	cyclictest	0	-21	swapper/2	21:05:00	2
2186118	99	32	0,30	cyclictest	0	-21	swapper/2	21:44:08	2
2186116	99	32	30,1	cyclictest	449069	-21	snmpd	21:56:26	1
2186116	99	32	30,1	cyclictest	449069	-21	snmpd	21:14:43	1
2186116	99	32	30,1	cyclictest	449069	-21	snmpd	20:44:03	1
2186116	99	32	29,2	cyclictest	449069	-21	snmpd	20:50:42	1
2186116	99	32	0,31	cyclictest	0	-21	swapper/1	19:35:13	1
2186115	99	32	30,2	cyclictest	449069	-21	snmpd	22:26:54	0
2186115	99	32	30,2	cyclictest	449069	-21	snmpd	19:10:06	0
2186115	99	32	30,2	cyclictest	449069	-21	snmpd	00:34:25	0
2186115	99	32	30,2	cyclictest	2321720	-21	cat	23:35:16	0
2186115	99	32	0,31	cyclictest	0	-21	swapper/0	23:59:30	0
2186123	99	31	30,1	cyclictest	449069	-21	snmpd	20:50:15	7
2186123	99	31	29,1	cyclictest	449069	-21	snmpd	22:04:32	7
2186123	99	31	28,2	cyclictest	449069	-21	snmpd	23:16:50	7
2186123	99	31	28,2	cyclictest	2341986	-21	cat	00:15:13	7
2186123	99	31	0,30	cyclictest	0	-21	swapper/7	22:27:33	7
2186123	99	31	0,30	cyclictest	0	-21	swapper/7	19:55:47	7
2186123	99	31	0,30	cyclictest	0	-21	swapper/7	19:55:47	7
2186123	99	31	0,1	cyclictest	0	-21	swapper/7	23:30:12	7
2186122	99	31	30,1	cyclictest	449069	-21	snmpd	22:09:37	6
2186122	99	31	28,2	cyclictest	449069	-21	snmpd	19:52:00	6
2186122	99	31	0,30	cyclictest	0	-21	swapper/6	23:12:31	6
2186122	99	31	0,30	cyclictest	0	-21	swapper/6	23:03:37	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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