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 Sun Apr 12, 2026 00:46:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1536685	2	298	284,9	sleep5	0	-21	swapper/5	19:09:10	5
1536454	2	293	257,28	sleep4	0	-21	swapper/4	19:06:04	4
1536444	2	290	273,10	sleep3	0	-21	swapper/3	19:05:56	3
1536600	2	289	267,14	sleep7	0	-21	swapper/7	19:08:00	7
1536436	2	289	269,13	sleep6	0	-21	swapper/6	19:05:51	6
1536709	2	288	268,13	sleep2	0	-21	swapper/2	19:09:31	2
1534634	2	286	266,13	sleep1	0	-21	swapper/1	19:05:04	1
1534633	2	286	266,13	sleep0	0	-21	swapper/0	19:05:04	0
1537223	99	47	46,1	cyclictest	1631444	-21	kworker/u16:0+flush-8:0	22:45:00	7
1537222	99	36	0,30	cyclictest	0	-21	swapper/6	22:24:08	6
1537222	99	36	0,30	cyclictest	0	-21	swapper/6	22:24:08	6
1537220	99	34	28,3	cyclictest	0	-21	swapper/4	22:00:52	4
1537220	99	34	0,33	cyclictest	0	-21	swapper/4	22:49:05	4
1537220	99	34	0,30	cyclictest	0	-21	swapper/4	22:33:35	4
1537223	99	33	30,3	cyclictest	1690412	-21	cat	00:10:14	7
1537223	99	33	30,2	cyclictest	1670030	-21	cat	23:30:14	7
1537222	99	33	30,2	cyclictest	449069	-21	snmpd	23:29:52	6
1537222	99	33	30,2	cyclictest	449069	-21	snmpd	20:15:13	6
1537222	99	33	30,2	cyclictest	449069	-21	snmpd	19:45:23	6
1537222	99	33	30,2	cyclictest	449069	-21	snmpd	00:38:15	6
1537222	99	33	30,2	cyclictest	449069	-21	snmpd	00:20:53	6
1537222	99	33	30,2	cyclictest	449069	-21	snmpd	00:17:14	6
1537220	99	33	30,2	cyclictest	449069	-21	snmpd	23:25:15	4
1537220	99	33	30,2	cyclictest	449069	-21	snmpd	19:54:38	4
1537220	99	33	30,2	cyclictest	1627498	-21	cat	22:05:16	4
1537219	99	33	30,2	cyclictest	449069	-21	snmpd	21:13:17	3
1537219	99	33	0,31	cyclictest	0	-21	swapper/3	23:24:24	3
1537217	99	33	30,2	cyclictest	449069	-21	snmpd	21:56:19	1
1537217	99	33	30,2	cyclictest	449069	-21	snmpd	20:17:00	1
1537217	99	33	30,2	cyclictest	449069	-21	snmpd	20:12:21	1
1537216	99	33	30,2	cyclictest	449069	-21	snmpd	23:40:16	0
1537216	99	33	30,2	cyclictest	449069	-21	snmpd	19:14:31	0
1537216	99	33	0,32	cyclictest	0	-21	swapper/0	20:18:36	0
1537223	99	32	31,1	cyclictest	1601968	-21	kworker/u16:3+flush-8:0	21:25:01	7
1537223	99	32	30,2	cyclictest	449069	-21	snmpd	19:27:44	7
1537223	99	32	30,2	cyclictest	449069	-21	snmpd	00:01:19	7
1537223	99	32	30,2	cyclictest	1654030	-21	kworker/7:1+events	23:25:24	7
1537223	99	32	0,31	cyclictest	0	-21	swapper/7	20:57:14	7
1537222	99	32	30,1	cyclictest	449069	-21	snmpd	19:28:53	6
1537222	99	32	30,1	cyclictest	1604841	-21	ntpq	21:20:23	6
1537222	99	32	29,2	cyclictest	449069	-21	snmpd	19:21:04	6
1537222	99	32	0,30	cyclictest	0	-21	swapper/6	23:40:19	6
1537222	99	32	0,30	cyclictest	0	-21	swapper/6	20:55:26	6
1537221	99	32	31,1	cyclictest	449069	-21	snmpd	22:23:47	5
1537221	99	32	31,1	cyclictest	449069	-21	snmpd	22:23:47	5
1537221	99	32	30,2	cyclictest	449069	-21	snmpd	21:03:11	5
1537220	99	32	30,1	cyclictest	449069	-21	snmpd	22:57:36	4
1537220	99	32	30,1	cyclictest	449069	-21	snmpd	19:59:39	4
1537220	99	32	30,1	cyclictest	449069	-21	snmpd	19:16:07	4
1537220	99	32	30,1	cyclictest	449069	-21	snmpd	00:35:50	4
1537220	99	32	29,2	cyclictest	449069	-21	snmpd	20:56:26	4
1537220	99	32	29,2	cyclictest	449069	-21	snmpd	00:30:41	4
1537220	99	32	28,3	cyclictest	449069	-21	snmpd	19:35:29	4
1537220	99	32	0,31	cyclictest	0	-21	swapper/4	22:43:02	4
1537219	99	32	30,2	cyclictest	449069	-21	snmpd	21:46:36	3
1537218	99	32	30,2	cyclictest	449069	-21	snmpd	23:42:52	2
1537218	99	32	30,2	cyclictest	449069	-21	snmpd	19:39:29	2
1537218	99	32	30,2	cyclictest	449069	-21	snmpd	00:03:04	2
1537218	99	32	30,2	cyclictest	1682558	-21	cat	23:55:16	2
1537218	99	32	0,31	cyclictest	0	-21	swapper/2	21:34:15	2
1537217	99	32	30,2	cyclictest	449069	-21	snmpd	00:19:43	1
1537217	99	32	30,1	cyclictest	449069	-21	snmpd	23:42:43	1
1537217	99	32	29,2	cyclictest	449069	-21	snmpd	23:08:30	1
1537217	99	32	29,2	cyclictest	449069	-21	snmpd	20:55:08	1
1537217	99	32	29,2	cyclictest	449069	-21	snmpd	20:28:58	1
1537217	99	32	29,2	cyclictest	449069	-21	snmpd	20:28:58	1
1537217	99	32	29,2	cyclictest	449069	-21	snmpd	20:24:32	1
1537217	99	32	29,2	cyclictest	1635011	-21	cat	22:20:15	1
1537217	99	32	29,2	cyclictest	1635011	-21	cat	22:20:15	1
1537216	99	32	30,2	cyclictest	449069	-21	snmpd	00:35:28	0
1537216	99	32	30,2	cyclictest	449069	-21	snmpd	00:07:50	0
1537216	99	32	30,2	cyclictest	449069	-21	snmpd	00:07:49	0
1537216	99	32	30,1	cyclictest	449069	-21	snmpd	21:50:16	0
1537216	99	32	30,1	cyclictest	449069	-21	snmpd	20:31:16	0
1537216	99	32	0,30	cyclictest	0	-21	swapper/0	23:30:22	0
1537216	99	32	0,30	cyclictest	0	-21	swapper/0	00:16:11	0
1537223	99	31	30,1	cyclictest	1699227	-21	kworker/u16:3+events_unbound	00:30:28	7
1537223	99	31	30,1	cyclictest	1495863	-21	kworker/7:2+events	21:45:16	7
1537223	99	31	29,2	cyclictest	1687624	-21	cat	00:05:15	7
1537223	99	31	29,2	cyclictest	1687624	-21	cat	00:05:15	7
1537223	99	31	29,2	cyclictest	1654030	-21	kworker/7:1+events	00:15:13	7
1537223	99	31	28,2	cyclictest	1606970	-21	cat	21:25:16	7
1537223	99	31	0,30	cyclictest	0	-21	swapper/7	22:11:55	7
1537223	99	31	0,30	cyclictest	0	-21	swapper/7	22:07:16	7
1537223	99	31	0,1	cyclictest	0	-21	swapper/7	23:47:43	7
1537223	99	31	0,1	cyclictest	0	-21	swapper/7	21:52:08	7
1537222	99	31	29,1	cyclictest	449069	-21	snmpd	23:17:42	6
1537222	99	31	28,2	cyclictest	1574427	-21	cat	20:20:13	6
1537222	99	31	0,30	cyclictest	0	-21	swapper/6	23:24:12	6
1537222	99	31	0,30	cyclictest	0	-21	swapper/6	22:00:31	6
1537222	99	31	0,1	cyclictest	0	-21	swapper/6	20:31:31	6
1537221	99	31	30,1	cyclictest	854	-21	lldpd	19:22:14	5
1537221	99	31	30,1	cyclictest	449069	-21	snmpd	22:54:12	5
1537221	99	31	30,1	cyclictest	449069	-21	snmpd	22:48:11	5
1537221	99	31	29,2	cyclictest	449069	-21	snmpd	20:40:28	5
1537220	99	31	30,1	cyclictest	449069	-21	snmpd	20:21:37	4
1537220	99	31	29,2	cyclictest	449069	-21	snmpd	23:30:04	4
1537220	99	31	29,1	cyclictest	449069	-21	snmpd	23:01:27	4
1537220	99	31	29,1	cyclictest	449069	-21	snmpd	22:53:45	4
1537220	99	31	29,1	cyclictest	449069	-21	snmpd	00:10:41	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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