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 Apr 03, 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
3264321	2	300	278,14	sleep5	0	-21	swapper/5	07:07:49	5
3264356	2	295	275,13	sleep1	0	-21	swapper/1	07:08:17	1
3264320	2	295	278,10	sleep4	0	-21	swapper/4	07:07:48	4
3264361	2	288	266,14	sleep6	0	-21	swapper/6	07:08:23	6
3264357	2	288	267,13	sleep2	0	-21	swapper/2	07:08:18	2
3264263	2	288	268,13	sleep7	0	-21	swapper/7	07:07:02	7
3264285	2	287	267,13	sleep0	0	-21	swapper/0	07:07:21	0
3264279	2	287	268,12	sleep3	0	-21	swapper/3	07:07:16	3
3264954	99	38	36,2	cyclictest	3272024	-21	kworker/u16:1+events_unbound	07:35:23	5
3264953	99	34	30,3	cyclictest	449069	-21	snmpd	08:28:26	4
3264950	99	34	0,33	cyclictest	0	-21	swapper/1	08:39:02	1
3264950	99	34	0,33	cyclictest	0	-21	swapper/1	07:54:58	1
3264956	99	33	30,2	cyclictest	449069	-21	snmpd	07:55:10	7
3264956	99	33	30,2	cyclictest	3383372	-21	cat	11:00:15	7
3264955	99	33	30,2	cyclictest	449069	-21	snmpd	11:11:37	6
3264955	99	33	30,2	cyclictest	449069	-21	snmpd	09:05:42	6
3264955	99	33	30,2	cyclictest	449069	-21	snmpd	08:13:52	6
3264953	99	33	30,2	cyclictest	449069	-21	snmpd	12:27:02	4
3264953	99	33	30,2	cyclictest	449069	-21	snmpd	12:11:45	4
3264953	99	33	30,2	cyclictest	449069	-21	snmpd	08:56:26	4
3264953	99	33	30,2	cyclictest	449069	-21	snmpd	07:53:55	4
3264953	99	33	30,2	cyclictest	449069	-21	snmpd	07:17:30	4
3264952	99	33	30,2	cyclictest	449069	-21	snmpd	12:25:15	3
3264952	99	33	0,30	cyclictest	0	-21	swapper/3	12:18:18	3
3264951	99	33	0,1	cyclictest	0	-21	swapper/2	07:50:43	2
3264950	99	33	30,2	cyclictest	449069	-21	snmpd	08:30:47	1
3264950	99	33	30,2	cyclictest	449069	-21	snmpd	08:30:47	1
3264950	99	33	30,2	cyclictest	449069	-21	snmpd	07:58:01	1
3264950	99	33	29,3	cyclictest	449069	-21	snmpd	09:28:33	1
3264949	99	33	30,2	cyclictest	449069	-21	snmpd	10:56:31	0
3264949	99	33	30,2	cyclictest	449069	-21	snmpd	10:34:03	0
3264956	99	32	30,2	cyclictest	449069	-21	snmpd	10:53:07	7
3264956	99	32	30,2	cyclictest	449069	-21	snmpd	09:29:15	7
3264956	99	32	30,1	cyclictest	449069	-21	snmpd	10:18:05	7
3264956	99	32	30,1	cyclictest	449069	-21	snmpd	07:45:16	7
3264956	99	32	0,31	cyclictest	0	-21	swapper/7	12:21:57	7
3264956	99	32	0,31	cyclictest	0	-21	swapper/7	12:21:57	7
3264956	99	32	0,31	cyclictest	0	-21	swapper/7	07:26:48	7
3264955	99	32	30,1	cyclictest	449069	-21	snmpd	08:39:17	6
3264955	99	32	0,31	cyclictest	0	-21	swapper/6	09:03:45	6
3264955	99	32	0,30	cyclictest	0	-21	swapper/6	10:49:03	6
3264955	99	32	0,30	cyclictest	0	-21	swapper/6	10:27:06	6
3264955	99	32	0,30	cyclictest	0	-21	swapper/6	10:01:58	6
3264955	99	32	0,30	cyclictest	0	-21	swapper/6	08:40:29	6
3264955	99	32	0,30	cyclictest	0	-21	swapper/6	07:15:18	6
3264954	99	32	30,2	cyclictest	3380835	-21	cat	10:55:14	5
3264954	99	32	30,2	cyclictest	3319760	-21	cat	08:55:14	5
3264953	99	32	28,3	cyclictest	3366400	-21	python3	10:25:28	4
3264953	99	32	0,31	cyclictest	0	-21	swapper/4	10:20:14	4
3264953	99	32	0,31	cyclictest	0	-21	swapper/4	10:15:14	4
3264953	99	32	0,31	cyclictest	0	-21	swapper/4	09:45:14	4
3264952	99	32	30,2	cyclictest	3350553	-21	cat	09:55:15	3
3264952	99	32	29,2	cyclictest	449069	-21	snmpd	12:32:43	3
3264952	99	32	0,31	cyclictest	0	-21	swapper/3	11:45:13	3
3264952	99	32	0,31	cyclictest	0	-21	swapper/3	08:22:20	3
3264952	99	32	0,31	cyclictest	0	-21	swapper/3	07:16:45	3
3264952	99	32	0,30	cyclictest	0	-21	swapper/3	08:30:11	3
3264952	99	32	0,30	cyclictest	0	-21	swapper/3	08:30:11	3
3264951	99	32	30,1	cyclictest	449069	-21	snmpd	07:29:10	2
3264951	99	32	0,31	cyclictest	0	-21	swapper/2	09:52:52	2
3264950	99	32	30,1	cyclictest	449069	-21	snmpd	12:09:14	1
3264950	99	32	29,2	cyclictest	449069	-21	snmpd	11:16:34	1
3264950	99	32	29,2	cyclictest	449069	-21	snmpd	10:27:42	1
3264950	99	32	29,2	cyclictest	3428914	-21	cat	12:30:13	1
3264950	99	32	29,2	cyclictest	3290616	-21	apt-get	08:00:03	1
3264950	99	32	28,3	cyclictest	449069	-21	snmpd	08:15:40	1
3264950	99	32	28,3	cyclictest	449069	-21	snmpd	07:20:39	1
3264950	99	32	0,31	cyclictest	0	-21	swapper/1	11:05:34	1
3264950	99	32	0,31	cyclictest	0	-21	swapper/1	10:08:38	1
3264949	99	32	30,2	cyclictest	449069	-21	snmpd	12:31:55	0
3264949	99	32	30,2	cyclictest	449069	-21	snmpd	10:45:30	0
3264949	99	32	30,2	cyclictest	449069	-21	snmpd	10:11:17	0
3264949	99	32	30,2	cyclictest	449069	-21	snmpd	08:08:31	0
3264949	99	32	30,2	cyclictest	449069	-21	snmpd	07:33:01	0
3264949	99	32	29,2	cyclictest	449069	-21	snmpd	08:44:44	0
3264949	99	32	0,31	cyclictest	0	-21	swapper/0	08:52:56	0
3264949	99	32	0,30	cyclictest	0	-21	swapper/0	12:15:39	0
3264956	99	31	30,1	cyclictest	449069	-21	snmpd	11:07:46	7
3264956	99	31	30,1	cyclictest	449069	-21	snmpd	08:41:17	7
3264956	99	31	29,2	cyclictest	449069	-21	snmpd	11:53:44	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	12:32:52	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	12:27:15	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	11:57:20	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	10:56:07	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	10:24:20	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	09:50:49	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	09:18:21	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	08:23:26	7
3264956	99	31	0,30	cyclictest	0	-21	swapper/7	07:43:04	7
3264956	99	31	0,29	cyclictest	0	-21	swapper/7	09:11:48	7
3264956	99	31	0,1	cyclictest	0	-21	swapper/7	11:20:34	7
3264956	99	31	0,1	cyclictest	0	-21	swapper/7	09:35:43	7
3264955	99	31	30,1	cyclictest	449069	-21	snmpd	09:11:36	6
3264955	99	31	29,1	cyclictest	449069	-21	snmpd	11:05:49	6
3264955	99	31	29,1	cyclictest	449069	-21	snmpd	11:02:49	6
3264955	99	31	28,2	cyclictest	449069	-21	snmpd	10:21:28	6
3264955	99	31	28,2	cyclictest	3380856	-21	cat	10:55:14	6
3264955	99	31	0,30	cyclictest	0	-21	swapper/6	12:35:16	6
3264955	99	31	0,30	cyclictest	0	-21	swapper/6	11:45:26	6
3264955	99	31	0,30	cyclictest	0	-21	swapper/6	11:28:08	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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