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 Wed Apr 01, 2026 12:46:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1749421	2	304	268,12	sleep1	0	-21	swapper/1	07:06:06	1
1749555	2	300	260,12	sleep2	0	-21	swapper/2	07:07:59	2
1749622	2	298	261,13	sleep0	0	-21	swapper/0	07:08:54	0
1749629	2	288	269,12	sleep7	0	-21	swapper/7	07:09:01	7
1749462	2	287	267,13	sleep5	0	-21	swapper/5	07:06:41	5
1749587	2	286	266,13	sleep4	0	-21	swapper/4	07:08:26	4
1749445	2	286	266,12	sleep6	0	-21	swapper/6	07:06:26	6
1747607	2	286	266,13	sleep3	0	-21	swapper/3	07:05:11	3
1750177	99	35	33,2	cyclictest	1764852	-21	ntp_states	07:35:27	7
1750173	99	34	30,3	cyclictest	449069	-21	snmpd	10:05:43	3
1750171	99	34	29,4	cyclictest	449069	-21	snmpd	10:03:10	1
1750177	99	33	30,2	cyclictest	1865096	-21	cat	10:55:16	7
1750177	99	33	0,31	cyclictest	0	-21	swapper/7	09:19:30	7
1750177	99	33	0,30	cyclictest	0	-21	swapper/7	11:48:29	7
1750176	99	33	30,3	cyclictest	449069	-21	snmpd	09:16:16	6
1750174	99	33	30,2	cyclictest	449069	-21	snmpd	09:58:23	4
1750173	99	33	30,2	cyclictest	449069	-21	snmpd	10:40:01	3
1750173	99	33	30,2	cyclictest	449069	-21	snmpd	10:40:00	3
1750173	99	33	29,3	cyclictest	1772117	-21	cat	07:50:14	3
1750171	99	33	30,2	cyclictest	449069	-21	snmpd	11:30:04	1
1750171	99	33	30,2	cyclictest	449069	-21	snmpd	09:07:54	1
1750171	99	33	29,4	cyclictest	449069	-21	snmpd	12:23:24	1
1750171	99	33	29,3	cyclictest	1896588	-21	apt-get	11:59:59	1
1750171	99	33	0,32	cyclictest	0	-21	swapper/1	09:12:05	1
1750171	99	33	0,30	cyclictest	0	-21	swapper/1	10:14:02	1
1750171	99	33	0,30	cyclictest	0	-21	swapper/1	09:35:09	1
1750170	99	33	30,2	cyclictest	1769372	-21	cat	07:45:15	0
1750170	99	33	0,30	cyclictest	0	-21	swapper/0	09:01:18	0
1750177	99	32	30,2	cyclictest	449069	-21	snmpd	09:31:16	7
1750177	99	32	30,2	cyclictest	449069	-21	snmpd	08:27:50	7
1750177	99	32	29,2	cyclictest	449069	-21	snmpd	10:50:12	7
1750177	99	32	0,31	cyclictest	0	-21	swapper/7	12:07:53	7
1750177	99	32	0,30	cyclictest	0	-21	swapper/7	12:26:30	7
1750176	99	32	30,2	cyclictest	449069	-21	snmpd	10:50:21	6
1750176	99	32	30,2	cyclictest	449069	-21	snmpd	08:54:41	6
1750176	99	32	30,2	cyclictest	449069	-21	snmpd	08:54:41	6
1750176	99	32	30,2	cyclictest	449069	-21	snmpd	07:12:54	6
1750176	99	32	30,1	cyclictest	1811640	-21	apt-get	09:10:11	6
1750176	99	32	29,2	cyclictest	449069	-21	snmpd	12:07:11	6
1750176	99	32	29,2	cyclictest	449069	-21	snmpd	09:29:24	6
1750175	99	32	30,2	cyclictest	1887642	-21	cat	11:40:15	5
1750175	99	32	30,2	cyclictest	1817275	-21	cat	09:20:15	5
1750175	99	32	29,2	cyclictest	0	-21	swapper/5	08:29:01	5
1750174	99	32	30,1	cyclictest	449069	-21	snmpd	12:25:30	4
1750174	99	32	29,2	cyclictest	449069	-21	snmpd	12:05:47	4
1750174	99	32	29,2	cyclictest	449069	-21	snmpd	09:10:47	4
1750174	99	32	29,2	cyclictest	1847593	-21	cat	10:20:18	4
1750174	99	32	0,31	cyclictest	0	-21	swapper/4	12:04:21	4
1750174	99	32	0,31	cyclictest	0	-21	swapper/4	11:43:11	4
1750174	99	32	0,30	cyclictest	0	-21	swapper/4	12:33:03	4
1750174	99	32	0,30	cyclictest	0	-21	swapper/4	12:33:03	4
1750173	99	32	29,2	cyclictest	449069	-21	snmpd	09:39:48	3
1750173	99	32	29,2	cyclictest	449069	-21	snmpd	08:17:37	3
1750173	99	32	29,2	cyclictest	449069	-21	snmpd	07:16:14	3
1750173	99	32	0,31	cyclictest	0	-21	swapper/3	10:50:14	3
1750173	99	32	0,31	cyclictest	0	-21	swapper/3	10:29:44	3
1750172	99	32	30,2	cyclictest	449069	-21	snmpd	11:36:40	2
1750172	99	32	30,2	cyclictest	449069	-21	snmpd	09:54:50	2
1750172	99	32	30,2	cyclictest	449069	-21	snmpd	09:30:36	2
1750172	99	32	30,2	cyclictest	449069	-21	snmpd	08:22:46	2
1750172	99	32	30,2	cyclictest	449069	-21	snmpd	07:29:50	2
1750172	99	32	30,2	cyclictest	1867603	-21	cat	11:00:15	2
1750171	99	32	30,1	cyclictest	449069	-21	snmpd	11:48:53	1
1750171	99	32	30,1	cyclictest	449069	-21	snmpd	10:25:57	1
1750171	99	32	30,1	cyclictest	449069	-21	snmpd	09:26:24	1
1750171	99	32	29,2	cyclictest	449069	-21	snmpd	10:24:20	1
1750171	99	32	29,2	cyclictest	449069	-21	snmpd	08:45:00	1
1750171	99	32	29,2	cyclictest	449069	-21	snmpd	08:08:13	1
1750171	99	32	0,30	cyclictest	0	-21	swapper/1	10:47:00	1
1750170	99	32	30,2	cyclictest	449069	-21	snmpd	11:28:58	0
1750170	99	32	30,1	cyclictest	449069	-21	snmpd	09:11:20	0
1750170	99	32	29,2	cyclictest	449069	-21	snmpd	08:53:23	0
1750170	99	32	29,2	cyclictest	449069	-21	snmpd	08:53:23	0
1750170	99	32	29,2	cyclictest	449069	-21	snmpd	07:53:51	0
1750170	99	32	0,31	cyclictest	0	-21	swapper/0	07:33:24	0
1750177	99	31	29,1	cyclictest	1835038	-21	cat	09:55:15	7
1750177	99	31	28,2	cyclictest	449069	-21	snmpd	12:30:45	7
1750177	99	31	28,2	cyclictest	449069	-21	snmpd	12:30:45	7
1750177	99	31	28,2	cyclictest	449069	-21	snmpd	08:56:29	7
1750177	99	31	28,2	cyclictest	449069	-21	snmpd	08:50:39	7
1750177	99	31	28,2	cyclictest	449069	-21	snmpd	08:50:38	7
1750177	99	31	28,2	cyclictest	449069	-21	snmpd	07:31:33	7
1750177	99	31	0,30	cyclictest	0	-21	swapper/7	11:44:05	7
1750177	99	31	0,30	cyclictest	0	-21	swapper/7	11:13:18	7
1750177	99	31	0,30	cyclictest	0	-21	swapper/7	10:36:14	7
1750177	99	31	0,30	cyclictest	0	-21	swapper/7	10:36:14	7
1750177	99	31	0,30	cyclictest	0	-21	swapper/7	09:02:08	7
1750177	99	31	0,30	cyclictest	0	-21	swapper/7	08:12:25	7
1750177	99	31	0,1	cyclictest	0	-21	swapper/7	12:15:03	7
1750177	99	31	0,1	cyclictest	0	-21	swapper/7	12:12:00	7
1750177	99	31	0,1	cyclictest	0	-21	swapper/7	10:00:10	7
1750176	99	31	30,1	cyclictest	449069	-21	snmpd	12:12:15	6
1750176	99	31	30,1	cyclictest	449069	-21	snmpd	11:44:14	6
1750176	99	31	30,1	cyclictest	449069	-21	snmpd	09:08:02	6
1750176	99	31	30,1	cyclictest	449069	-21	snmpd	07:45:46	6
1750176	99	31	30,1	cyclictest	449069	-21	snmpd	07:21:44	6
1750176	99	31	29,2	cyclictest	449069	-21	snmpd	09:58:31	6
1750176	99	31	29,2	cyclictest	449069	-21	snmpd	07:18:08	6
1750176	99	31	0,31	cyclictest	0	-21	swapper/6	08:17:34	6
1750176	99	31	0,30	cyclictest	0	-21	swapper/6	12:36:34	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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