OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Sun Jun 29, 2025 12:44:41)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
30468	99	186	182,1	cyclictest	741	-21	snmpd	07:13:32	1
30463	99	180	171,8	cyclictest	0	-21	swapper/0	07:10:00	0
30472	99	127	125,1	cyclictest	0	-21	swapper/2	07:10:01	2
30240	2	123	98,10	sleep1	0	-21	swapper/1	07:09:19	1
30082	2	121	108,10	sleep2	0	-21	swapper/2	07:07:15	2
25143	2	119	106,9	sleep3	0	-21	swapper/3	07:05:04	3
30162	2	111	98,10	sleep0	0	-21	swapper/0	07:08:17	0
30468	99	68	63,4	cyclictest	22975	-21	kworker/u16:3+events_unbound	10:40:02	1
30468	99	63	58,4	cyclictest	31357	-21	kworker/u16:0+events_unbound	12:35:02	1
4908	2	51	0,1	sleep0	4912	-21	kthreadcore	10:50:22	0
30468	99	51	47,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	09:00:26	1
30463	99	51	45,4	cyclictest	22975	-21	kworker/u16:3+events_unbound	10:30:29	0
30468	99	49	45,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	07:15:31	1
30468	99	48	44,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	10:35:22	1
30468	99	48	34,9	cyclictest	21338	-21	kworker/u16:2+events_unbound	12:05:18	1
6003	2	45	0,2	chrt	6008	-21	irqcore	10:15:20	1
30468	99	45	41,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	07:25:31	1
30468	99	43	38,4	cyclictest	21338	-21	kworker/u16:2+events_unbound	08:55:29	1
30468	99	42	38,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	10:25:09	1
30468	99	42	38,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	09:45:27	1
30468	99	42	38,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	07:30:28	1
30468	99	41	38,2	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:35:18	1
30468	99	41	37,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	08:25:29	1
30468	99	41	35,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	09:30:30	1
30468	99	40	36,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	09:50:28	1
30468	99	39	35,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	12:25:20	1
30468	99	39	34,4	cyclictest	31357	-21	kworker/u16:0+events_unbound	12:15:08	1
30468	99	39	33,4	cyclictest	22975	-21	kworker/u16:3+events_unbound	08:10:20	1
30468	99	36	32,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	09:20:24	1
30468	99	36	32,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	07:55:18	1
30463	99	36	31,4	cyclictest	21338	-21	kworker/u16:2+events_unbound	07:35:02	0
30468	99	35	32,2	cyclictest	22975	-21	kworker/u16:3+events_unbound	09:25:01	1
30468	99	34	30,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	08:15:16	1
30468	99	34	30,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	11:40:19	1
30468	99	33	30,2	cyclictest	31357	-21	kworker/u16:0+events_unbound	12:10:00	1
30468	99	33	30,2	cyclictest	31357	-21	kworker/u16:0+events_unbound	12:00:13	1
30468	99	32	29,2	cyclictest	21338	-21	kworker/u16:2+events_unbound	09:40:39	1
30468	99	31	29,2	cyclictest	21338	-21	kworker/u16:2+events_unbound	11:50:21	1
30468	99	31	26,4	cyclictest	21338	-21	kworker/u16:2+events_unbound	11:00:08	1
30468	99	30	26,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	08:20:22	1
30468	99	30	26,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	07:40:28	1
30468	99	30	26,2	cyclictest	21338	-21	kworker/u16:2+events_unbound	09:05:15	1
30468	99	30	25,4	cyclictest	21338	-21	kworker/u16:2+events_unbound	08:35:15	1
30468	99	30	18,9	cyclictest	7078	-21	ntp_states	08:40:24	1
30468	99	30	18,10	cyclictest	29034	-21	diskstats	10:45:12	1
30468	99	29	26,2	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:05:01	1
30468	99	29	21,4	cyclictest	22975	-21	kworker/u16:3+events_unbound	10:30:22	1
30468	99	29	20,8	cyclictest	8390	-21	munin-run	09:15:00	1
30468	99	28	24,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	10:50:25	1
30468	99	27	17,8	cyclictest	21338	-21	kworker/u16:2+events_unbound	07:39:20	1
30468	99	26	23,2	cyclictest	21338	-21	kworker/u16:2+events_unbound	10:20:02	1
30468	99	26	23,2	cyclictest	21338	-21	kworker/u16:2+events_unbound	10:00:14	1
30468	99	26	23,2	cyclictest	21338	-21	kworker/u16:2+events_unbound	10:00:14	1
30468	99	26	23,2	cyclictest	21338	-21	kworker/u16:2+events_unbound	08:00:17	1
30468	99	26	22,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	08:30:16	1
30468	99	25	21,3	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:55:01	1
30468	99	25	21,3	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:15:01	1
30468	99	24	21,2	cyclictest	22975	-21	kworker/u16:3+events_unbound	07:20:19	1
30468	99	24	21,2	cyclictest	21338	-21	kworker/u16:2+events_unbound	09:35:01	1
30468	99	24	20,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	07:45:36	1
30468	99	23	20,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	08:45:00	1
30468	99	23	20,2	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:25:20	1
30468	99	23	19,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	10:10:02	1
30468	99	23	12,8	cyclictest	9060	-21	diskstats	09:15:16	1
30463	99	23	19,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	10:45:09	0
30463	99	22	18,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	09:20:32	0
30468	99	21	17,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	08:51:36	1
30468	99	21	11,8	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:34:00	1
30463	99	21	17,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	07:15:04	0
30463	99	21	17,3	cyclictest	0	-21	swapper/0	09:35:00	0
30468	99	20	18,2	cyclictest	31357	-21	kworker/u16:0+events_unbound	10:55:01	1
30463	99	20	17,2	cyclictest	0	-21	swapper/0	10:40:00	0
30463	99	20	16,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	11:20:23	0
30472	99	19	14,4	cyclictest	21338	-21	kworker/u16:2+events_unbound	08:15:02	2
30468	99	19	8,6	cyclictest	0	-21	swapper/1	12:23:20	1
30468	99	19	8,10	cyclictest	741	-21	snmpd	10:06:40	1
30468	99	19	16,2	cyclictest	22975	-21	kworker/u16:3+events_unbound	08:05:45	1
30468	99	19	15,3	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:20:10	1
30463	99	19	15,3	cyclictest	7670	-21	kworker/u16:1+events_unbound	09:15:27	0
30463	99	19	15,3	cyclictest	7670	-21	kworker/u16:1+events_unbound	09:10:30	0
30468	99	18	15,2	cyclictest	31357	-21	kworker/u16:0+events_unbound	12:30:01	1
30468	99	18	14,3	cyclictest	21338	-21	kworker/u16:2+events_unbound	11:48:36	1
30468	99	17	0,16	cyclictest	0	-21	swapper/1	09:55:14	1
30468	99	17	0,16	cyclictest	0	-21	swapper/1	09:55:14	1
30463	99	17	8,8	cyclictest	0	-21	swapper/0	11:00:00	0
30463	99	17	1,8	cyclictest	13711	-21	/usr/sbin/munin	08:50:26	0
30463	99	17	13,3	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:40:23	0
30463	99	17	0,16	cyclictest	0	-21	swapper/0	09:55:14	0
30463	99	17	0,16	cyclictest	0	-21	swapper/0	09:55:14	0
30472	99	16	13,2	cyclictest	0	-21	swapper/2	08:45:00	2
30468	99	16	14,2	cyclictest	31357	-21	kworker/u16:0+events_unbound	11:11:20	1
30463	99	16	5,8	cyclictest	0	-21	swapper/0	12:28:58	0
30463	99	16	11,4	cyclictest	22975	-21	kworker/u16:3+events_unbound	09:00:20	0
23581	2	16	0,1	sleep0	23587	-21	cut	07:30:21	0
30472	99	15	11,3	cyclictest	22975	-21	kworker/u16:3+events_unbound	07:15:02	2
30468	99	15	9,3	cyclictest	22975	-21	kworker/u16:3+flush-8:0	07:50:58	1
30468	99	15	9,3	cyclictest	22975	-21	kworker/u16:3+flush-8:0	07:50:58	1
30463	99	15	9,5	cyclictest	21338	-21	kworker/u16:2+events_unbound	07:40:19	0
30463	99	15	6,6	cyclictest	78	50	irq/24-ahci[0000:00:1f.2]	08:00:01	0
30463	99	15	4,7	cyclictest	0	-21	swapper/0	12:30:59	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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