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 Tue Dec 02, 2025 00:46:27)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3813572	2	302	283,12	sleep0	0	-21	swapper/0	19:08:57	0
3813513	2	301	291,6	sleep1	0	-21	swapper/1	19:08:10	1
3813435	2	294	257,29	sleep4	0	-21	swapper/4	19:07:09	4
3812239	2	288	271,9	sleep5	0	-21	swapper/5	19:05:16	5
3813566	2	287	268,12	sleep3	0	-21	swapper/3	19:08:52	3
3813488	2	286	267,12	sleep7	0	-21	swapper/7	19:07:52	7
3813321	2	285	265,13	sleep6	0	-21	swapper/6	19:05:49	6
3813411	2	284	265,12	sleep2	0	-21	swapper/2	19:06:50	2
3816447	2	88	0,0	sleep3	0	-21	swapper/3	19:15:00	3
3814119	99	38	37,1	cyclictest	3904952	-21	gpgv	22:20:00	1
3814121	99	36	33,2	cyclictest	3813358	-21	kworker/u16:2+events_unbound	19:20:12	3
3814120	99	35	34,1	cyclictest	3943353	-21	kworker/u16:0+events_unbound	23:45:23	2
3814125	99	33	30,2	cyclictest	833	-21	snmpd	23:03:16	7
3814125	99	33	30,2	cyclictest	833	-21	snmpd	21:02:48	7
3814125	99	33	30,2	cyclictest	3891597	-21	cat	21:50:15	7
3814125	99	33	0,30	cyclictest	0	-21	swapper/7	21:20:01	7
3814125	99	33	0,30	cyclictest	0	-21	swapper/7	21:20:00	7
3814124	99	33	30,2	cyclictest	833	-21	snmpd	20:36:20	6
3814124	99	33	30,2	cyclictest	833	-21	snmpd	20:25:29	6
3814124	99	33	30,2	cyclictest	833	-21	snmpd	00:03:05	6
3814124	99	33	27,5	cyclictest	833	-21	snmpd	23:16:52	6
3814123	99	33	30,2	cyclictest	833	-21	snmpd	21:53:50	5
3814122	99	33	30,2	cyclictest	833	-21	snmpd	23:01:16	4
3814122	99	33	30,2	cyclictest	833	-21	snmpd	20:10:35	4
3814122	99	33	30,2	cyclictest	833	-21	snmpd	19:16:00	4
3814122	99	33	29,3	cyclictest	0	-21	swapper/4	22:26:20	4
3814121	99	33	0,30	cyclictest	0	-21	swapper/3	22:30:16	3
3814120	99	33	32,1	cyclictest	3940960	-21	kworker/u16:4+events_unbound	23:55:17	2
3814120	99	33	31,2	cyclictest	3931795	-21	kworker/u16:3+events_unbound	23:50:25	2
3814118	99	33	30,2	cyclictest	833	-21	snmpd	22:29:20	0
3814118	99	33	30,2	cyclictest	833	-21	snmpd	21:17:58	0
3814118	99	33	30,2	cyclictest	833	-21	snmpd	00:12:39	0
3814118	99	33	30,2	cyclictest	3879821	-21	cat	21:25:17	0
3814118	99	33	30,2	cyclictest	3870193	-21	cat	21:05:15	0
3814118	99	33	0,30	cyclictest	0	-21	swapper/0	22:32:39	0
3814125	99	32	30,2	cyclictest	833	-21	snmpd	19:53:03	7
3814125	99	32	30,1	cyclictest	833	-21	snmpd	23:23:10	7
3814125	99	32	29,2	cyclictest	833	-21	snmpd	00:09:48	7
3814125	99	32	29,2	cyclictest	3853619	-21	cat	20:30:17	7
3814124	99	32	30,1	cyclictest	833	-21	snmpd	23:58:57	6
3814124	99	32	30,1	cyclictest	833	-21	snmpd	21:29:36	6
3814124	99	32	28,3	cyclictest	833	-21	snmpd	22:28:20	6
3814124	99	32	28,3	cyclictest	833	-21	snmpd	00:13:18	6
3814124	99	32	0,31	cyclictest	0	-21	swapper/6	23:49:00	6
3814124	99	32	0,31	cyclictest	0	-21	swapper/6	23:43:20	6
3814124	99	32	0,31	cyclictest	0	-21	swapper/6	23:26:37	6
3814124	99	32	0,31	cyclictest	0	-21	swapper/6	20:54:30	6
3814124	99	32	0,31	cyclictest	0	-21	swapper/6	20:45:29	6
3814124	99	32	0,31	cyclictest	0	-21	swapper/6	20:12:52	6
3814123	99	32	30,1	cyclictest	833	-21	snmpd	22:22:30	5
3814123	99	32	30,1	cyclictest	0	-21	swapper/5	21:04:24	5
3814123	99	32	29,2	cyclictest	833	-21	snmpd	00:25:06	5
3814123	99	32	0,31	cyclictest	0	-21	swapper/5	20:15:17	5
3814122	99	32	29,2	cyclictest	833	-21	snmpd	23:47:11	4
3814121	99	32	30,1	cyclictest	833	-21	snmpd	22:10:41	3
3814121	99	32	29,2	cyclictest	3924034	-21	kworker/u16:2+flush-8:0	23:00:29	3
3814121	99	32	29,2	cyclictest	3829843	-21	cat	19:40:17	3
3814121	99	32	0,31	cyclictest	0	-21	swapper/3	00:09:48	3
3814121	99	32	0,30	cyclictest	0	-21	swapper/3	19:52:40	3
3814120	99	32	31,1	cyclictest	3770136	-21	kworker/u16:1+events_unbound	19:30:27	2
3814120	99	32	30,2	cyclictest	833	-21	snmpd	23:15:07	2
3814120	99	32	30,2	cyclictest	833	-21	snmpd	22:10:54	2
3814120	99	32	30,2	cyclictest	833	-21	snmpd	21:52:02	2
3814120	99	32	30,2	cyclictest	833	-21	snmpd	00:01:17	2
3814120	99	32	30,2	cyclictest	3906098	-21	cat	22:20:16	2
3814119	99	32	31,1	cyclictest	3834519	-21	cat	19:50:15	1
3814119	99	32	30,2	cyclictest	833	-21	snmpd	19:14:11	1
3814119	99	32	30,2	cyclictest	3959142	-21	cat	00:10:17	1
3814118	99	32	29,2	cyclictest	833	-21	snmpd	20:20:26	0
3814118	99	32	0,31	cyclictest	0	-21	swapper/0	23:01:24	0
3814118	99	32	0,31	cyclictest	0	-21	swapper/0	22:51:39	0
3814118	99	32	0,30	cyclictest	0	-21	swapper/0	20:35:14	0
3814125	99	31	30,1	cyclictest	833	-21	snmpd	23:47:38	7
3814125	99	31	30,1	cyclictest	833	-21	snmpd	22:07:21	7
3814125	99	31	30,1	cyclictest	833	-21	snmpd	20:25:35	7
3814125	99	31	30,1	cyclictest	833	-21	snmpd	00:02:24	7
3814125	99	31	29,1	cyclictest	833	-21	snmpd	21:58:26	7
3814125	99	31	29,1	cyclictest	833	-21	snmpd	21:26:37	7
3814125	99	31	29,1	cyclictest	0	-21	swapper/7	21:13:57	7
3814125	99	31	28,2	cyclictest	833	-21	snmpd	21:15:06	7
3814125	99	31	28,2	cyclictest	833	-21	snmpd	20:38:56	7
3814125	99	31	28,2	cyclictest	833	-21	snmpd	19:30:34	7
3814125	99	31	0,30	cyclictest	0	-21	swapper/7	23:38:12	7
3814125	99	31	0,30	cyclictest	0	-21	swapper/7	23:18:43	7
3814125	99	31	0,30	cyclictest	0	-21	swapper/7	22:18:41	7
3814125	99	31	0,30	cyclictest	0	-21	swapper/7	22:04:22	7
3814125	99	31	0,30	cyclictest	0	-21	swapper/7	21:44:58	7
3814125	99	31	0,30	cyclictest	0	-21	swapper/7	19:59:38	7
3814125	99	31	0,1	cyclictest	0	-21	swapper/7	21:45:17	7
3814125	99	31	0,1	cyclictest	0	-21	swapper/7	20:23:20	7
3814125	99	31	0,1	cyclictest	0	-21	swapper/7	00:27:16	7
3814124	99	31	30,1	cyclictest	833	-21	snmpd	21:10:12	6
3814124	99	31	29,1	cyclictest	833	-21	snmpd	22:38:34	6
3814124	99	31	29,1	cyclictest	833	-21	snmpd	21:48:17	6
3814124	99	31	28,2	cyclictest	833	-21	snmpd	23:32:01	6
3814124	99	31	28,2	cyclictest	833	-21	snmpd	19:35:03	6
3814124	99	31	27,3	cyclictest	674173	-21	rs:main		6
3814124	99	31	27,3	cyclictest	674173	-21	rs:main		6
3814124	99	31	0,30	cyclictest	0	-21	swapper/6	23:36:50	6
3814124	99	31	0,30	cyclictest	0	-21	swapper/6	23:04:39	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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