OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot4s.osadl.org (updated Thu Nov 06, 2025 00:46:50)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2044343	2	364	344,13	sleep1	0	-21	swapper/1	19:09:40	1
2044030	2	359	353,4	sleep15	0	-21	swapper/15	19:06:09	7
2044174	2	356	337,12	sleep9	0	-21	swapper/9	19:07:55	15
2044037	2	355	319,30	sleep4	0	-21	swapper/4	19:06:14	10
2044196	2	353	333,13	sleep11	0	-21	swapper/11	19:08:13	3
2043995	2	352	333,12	sleep3	0	-21	swapper/3	19:05:40	9
2044046	2	351	331,13	sleep12	0	-21	swapper/12	19:06:22	4
2044139	2	350	331,12	sleep13	0	-21	swapper/13	19:07:27	5
2044105	2	350	331,12	sleep6	0	-21	swapper/6	19:07:04	12
2044170	2	348	328,13	sleep5	0	-21	swapper/5	19:07:51	11
2044087	2	348	329,12	sleep8	0	-21	swapper/8	19:06:50	14
2044187	2	344	326,12	sleep2	0	-21	swapper/2	19:08:04	8
2044009	2	344	324,13	sleep14	0	-21	swapper/14	19:05:52	6
2044044	2	343	322,14	sleep10	0	-21	swapper/10	19:06:20	2
2044306	2	342	320,14	sleep7	0	-21	swapper/7	19:09:14	13
2044012	2	339	318,14	sleep0	0	-21	swapper/0	19:05:54	0
2044833	99	96	25,44	cyclictest	0	-21	swapper/12	20:22:00	4
2044833	99	96	25,44	cyclictest	0	-21	swapper/12	20:22:00	4
2044802	99	94	36,29	cyclictest	0	-21	swapper/2	20:22:01	8
2044802	99	94	36,29	cyclictest	0	-21	swapper/2	20:22:01	8
2044806	99	82	25,28	cyclictest	0	-21	swapper/3	20:22:00	9
2044806	99	82	25,28	cyclictest	0	-21	swapper/3	20:22:00	9
2044830	99	65	5,29	cyclictest	0	-21	swapper/11	20:22:01	3
2044830	99	65	5,29	cyclictest	0	-21	swapper/11	20:22:01	3
2044828	99	55	54,1	cyclictest	3411	-21	Xorg	20:22:01	2
2044828	99	55	54,1	cyclictest	3411	-21	Xorg	20:22:01	2
2044843	99	45	45,0	cyclictest	0	-21	swapper/15	20:22:01	7
2044843	99	45	45,0	cyclictest	0	-21	swapper/15	20:22:01	7
2044840	99	40	38,2	cyclictest	3411	-21	Xorg	20:22:00	6
2044840	99	40	38,2	cyclictest	3411	-21	Xorg	20:22:00	6
2044814	99	40	39,1	cyclictest	3411	-21	Xorg	20:22:00	12
2044814	99	40	39,1	cyclictest	3411	-21	Xorg	20:22:00	12
2044808	99	38	37,1	cyclictest	3411	-21	Xorg	20:22:00	10
2044808	99	38	37,1	cyclictest	3411	-21	Xorg	20:22:00	10
2044833	99	34	28,3	cyclictest	2367773	-21	IPDL	09:33:28	4
2044838	99	33	32,1	cyclictest	2128005	-21	kworker/u32:1+flush-259:0	21:19:02	5
2044833	99	33	0,33	cyclictest	0	-21	swapper/12	22:06:23	4
2044833	99	33	0,30	cyclictest	0	-21	swapper/12	23:02:25	4
2044833	99	33	0,30	cyclictest	0	-21	swapper/12	22:45:43	4
2044833	99	33	0,28	cyclictest	0	-21	swapper/12	21:13:59	4
2044797	99	33	30,2	cyclictest	2074589	-21	kworker/u32:0+events_unbound	22:36:20	0
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:55:41	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:50:12	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:47:21	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:41:33	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:37:11	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:31:41	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:28:31	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:28:31	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:20:59	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:20:59	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:12:47	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	23:06:07	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:55:43	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:50:03	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:42:21	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:36:29	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:26:19	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:20:19	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:16:53	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:12:26	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	22:01:14	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:55:31	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:51:59	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:48:05	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:40:03	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:35:27	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:32:28	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:27:01	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:23:41	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	21:15:19	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:55:15	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:50:29	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:45:09	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:40:37	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:36:25	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:31:27	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:27:09	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:16:31	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:16:31	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:10:13	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:10:13	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:06:41	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	20:00:59	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	19:47:11	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	19:43:21	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	19:35:27	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	19:30:05	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	19:28:05	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	19:22:37	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	19:16:21	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	19:10:27	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	00:30:13	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	00:26:11	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	00:10:43	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	00:08:11	4
2044833	99	32	0,29	cyclictest	0	-21	swapper/12	00:04:15	4
2044830	99	32	9,1	cyclictest	0	-21	swapper/11	19:44:28	3
2044830	99	32	32,0	cyclictest	0	-21	swapper/11	23:35:17	3
2044830	99	32	31,1	cyclictest	0	-21	swapper/11	20:15:13	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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