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 Dec 06, 2025 12:46:26)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2916875	2	292	273,11	sleep7	0	-21	swapper/7	07:08:11	7
2916759	2	292	257,27	sleep4	0	-21	swapper/4	07:06:31	4
2916674	2	291	257,26	sleep3	0	-21	swapper/3	07:05:33	3
2916936	2	290	271,12	sleep0	0	-21	swapper/0	07:09:00	0
2916924	2	286	265,13	sleep6	0	-21	swapper/6	07:08:49	6
2916730	2	286	266,13	sleep2	0	-21	swapper/2	07:06:05	2
2916780	2	285	265,13	sleep5	0	-21	swapper/5	07:06:48	5
2916990	2	283	262,13	sleep1	0	-21	swapper/1	07:09:42	1
2917490	99	36	33,2	cyclictest	2979261	-21	latency_hist	09:20:01	7
2917488	99	36	34,2	cyclictest	2998457	-21	kworker/u16:3+flush-8:0	10:00:25	5
2917488	99	35	33,1	cyclictest	2993315	-21	kworker/u16:1+flush-8:0	11:35:26	5
2917488	99	34	32,2	cyclictest	3044307	-21	kworker/u16:2+flush-8:0	11:35:00	5
2917488	99	34	30,2	cyclictest	2969677	-21	kworker/u16:0+events_unbound	09:00:01	5
2917483	99	34	33,1	cyclictest	2993315	-21	kworker/u16:1+events_unbound	11:10:27	0
2917483	99	34	33,1	cyclictest	2993315	-21	kworker/u16:1+events_unbound	11:10:27	0
2917490	99	33	30,2	cyclictest	833	-21	snmpd	08:41:15	7
2917490	99	33	29,3	cyclictest	0	-21	swapper/7	12:16:39	7
2917489	99	33	30,2	cyclictest	833	-21	snmpd	07:46:59	6
2917489	99	33	0,31	cyclictest	0	-21	swapper/6	10:22:05	6
2917489	99	33	0,30	cyclictest	0	-21	swapper/6	10:12:48	6
2917489	99	33	0,30	cyclictest	0	-21	swapper/6	08:22:36	6
2917488	99	33	30,2	cyclictest	833	-21	snmpd	10:30:12	5
2917487	99	33	30,2	cyclictest	833	-21	snmpd	12:30:27	4
2917487	99	33	30,2	cyclictest	2958835	-21	cat	08:35:15	4
2917487	99	33	0,30	cyclictest	0	-21	swapper/4	12:01:30	4
2917486	99	33	30,2	cyclictest	833	-21	snmpd	12:39:49	3
2917486	99	33	0,30	cyclictest	0	-21	swapper/3	11:46:26	3
2917483	99	33	31,2	cyclictest	2933906	-21	kworker/u16:2+events_unbound	07:45:23	0
2917490	99	32	30,2	cyclictest	833	-21	snmpd	09:58:14	7
2917490	99	32	30,2	cyclictest	833	-21	snmpd	09:45:23	7
2917490	99	32	30,2	cyclictest	1708265	-21	systemd-journal	10:40:00	7
2917490	99	32	30,1	cyclictest	833	-21	snmpd	12:38:43	7
2917490	99	32	30,1	cyclictest	833	-21	snmpd	11:23:41	7
2917490	99	32	29,2	cyclictest	833	-21	snmpd	11:57:48	7
2917490	99	32	29,2	cyclictest	833	-21	snmpd	10:47:49	7
2917490	99	32	29,2	cyclictest	833	-21	snmpd	08:00:08	7
2917490	99	32	29,2	cyclictest	3019001	-21	cat	10:40:17	7
2917490	99	32	0,31	cyclictest	0	-21	swapper/7	07:30:34	7
2917489	99	32	30,1	cyclictest	833	-21	snmpd	12:26:34	6
2917489	99	32	30,1	cyclictest	833	-21	snmpd	08:40:12	6
2917489	99	32	29,2	cyclictest	833	-21	snmpd	08:35:12	6
2917489	99	32	29,2	cyclictest	833	-21	snmpd	08:34:06	6
2917489	99	32	29,2	cyclictest	2942192	-21	cat	08:00:16	6
2917489	99	32	28,3	cyclictest	833	-21	snmpd	07:21:10	6
2917489	99	32	0,31	cyclictest	0	-21	swapper/6	09:26:14	6
2917489	99	32	0,30	cyclictest	0	-21	swapper/6	09:47:29	6
2917489	99	32	0,29	cyclictest	0	-21	swapper/6	12:12:11	6
2917489	99	32	0,29	cyclictest	0	-21	swapper/6	10:47:13	6
2917488	99	32	30,2	cyclictest	833	-21	snmpd	11:07:04	5
2917488	99	32	30,2	cyclictest	833	-21	snmpd	11:07:04	5
2917488	99	32	30,2	cyclictest	833	-21	snmpd	07:40:47	5
2917488	99	32	30,2	cyclictest	833	-21	snmpd	07:34:34	5
2917488	99	32	29,2	cyclictest	833	-21	snmpd	08:10:05	5
2917488	99	32	1,31	cyclictest	2972666	-21	apt-get	09:05:12	5
2917487	99	32	30,2	cyclictest	833	-21	snmpd	08:49:04	4
2917487	99	32	30,1	cyclictest	833	-21	snmpd	11:54:29	4
2917487	99	32	30,1	cyclictest	833	-21	snmpd	10:48:40	4
2917487	99	32	29,2	cyclictest	833	-21	snmpd	09:36:29	4
2917487	99	32	29,2	cyclictest	3002185	-21	cat	10:05:15	4
2917486	99	32	30,2	cyclictest	833	-21	snmpd	10:53:46	3
2917486	99	32	30,2	cyclictest	833	-21	snmpd	07:14:28	3
2917486	99	32	30,1	cyclictest	833	-21	snmpd	11:26:08	3
2917486	99	32	30,1	cyclictest	833	-21	snmpd	10:02:51	3
2917486	99	32	30,1	cyclictest	833	-21	snmpd	08:55:37	3
2917486	99	32	29,2	cyclictest	833	-21	snmpd	08:11:14	3
2917486	99	32	29,2	cyclictest	833	-21	snmpd	07:22:19	3
2917486	99	32	0,31	cyclictest	0	-21	swapper/3	09:15:19	3
2917486	99	32	0,31	cyclictest	0	-21	swapper/3	09:15:19	3
2917486	99	32	0,31	cyclictest	0	-21	swapper/3	07:55:23	3
2917485	99	32	0,31	cyclictest	0	-21	swapper/2	07:11:31	2
2917484	99	32	30,2	cyclictest	833	-21	snmpd	11:55:18	1
2917484	99	32	30,2	cyclictest	833	-21	snmpd	08:43:24	1
2917484	99	32	30,2	cyclictest	833	-21	snmpd	07:48:20	1
2917484	99	32	30,2	cyclictest	2917198	-21	kworker/1:1+events	07:13:40	1
2917483	99	32	31,1	cyclictest	2876629	-21	kworker/0:1+events	08:15:26	0
2917483	99	32	30,2	cyclictest	2969989	-21	kworker/0:0+events	12:13:59	0
2917483	99	32	0,31	cyclictest	0	-21	swapper/0	10:53:25	0
2917490	99	31	30,1	cyclictest	833	-21	snmpd	10:09:20	7
2917490	99	31	29,1	cyclictest	833	-21	snmpd	12:21:46	7
2917490	99	31	29,1	cyclictest	833	-21	snmpd	11:40:30	7
2917490	99	31	29,1	cyclictest	833	-21	snmpd	10:12:03	7
2917490	99	31	29,1	cyclictest	833	-21	snmpd	07:57:41	7
2917490	99	31	28,2	cyclictest	3050069	-21	cat	11:45:18	7
2917490	99	31	28,2	cyclictest	3033654	-21	cat	11:10:15	7
2917490	99	31	28,2	cyclictest	3033654	-21	cat	11:10:15	7
2917490	99	31	28,2	cyclictest	2968508	-21	cat	08:55:16	7
2917490	99	31	0,30	cyclictest	0	-21	swapper/7	11:29:35	7
2917490	99	31	0,30	cyclictest	0	-21	swapper/7	09:18:56	7
2917490	99	31	0,30	cyclictest	0	-21	swapper/7	08:53:52	7
2917490	99	31	0,30	cyclictest	0	-21	swapper/7	07:42:08	7
2917490	99	31	0,30	cyclictest	0	-21	swapper/7	07:16:01	7
2917490	99	31	0,30	cyclictest	0	-21	swapper/7	07:14:37	7
2917490	99	31	0,1	cyclictest	0	-21	swapper/7	12:30:18	7
2917490	99	31	0,1	cyclictest	0	-21	swapper/7	07:36:04	7
2917489	99	31	30,1	cyclictest	833	-21	snmpd	09:13:39	6
2917489	99	31	29,1	cyclictest	833	-21	snmpd	09:56:36	6
2917489	99	31	28,2	cyclictest	833	-21	snmpd	08:50:28	6
2917489	99	31	28,2	cyclictest	3050047	-21	cat	11:45:17	6
2917489	99	31	0,30	cyclictest	0	-21	swapper/6	11:41:15	6
2917489	99	31	0,30	cyclictest	0	-21	swapper/6	11:21:34	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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