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 Wed Nov 26, 2025 12:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2850070	2	168	0,3	sleep3	47	1	rcuc/3	08:21:18	3
2776616	99	64	57,4	cyclictest	2848261	-21	latency_hist	08:20:01	1
2776612	99	64	55,6	cyclictest	2872829	-21	kworker/u8:1+flush-8:0	08:56:28	0
2776616	99	63	57,4	cyclictest	2426287	-21	kworker/u8:3+events_unbound	07:31:22	1
2776616	99	62	56,4	cyclictest	2927779	-21	kworker/u8:1+events_unbound	10:16:22	1
2776616	99	62	54,6	cyclictest	2858451	-21	kworker/u8:4+flush-8:0	10:11:28	1
2776616	99	61	55,4	cyclictest	2858451	-21	kworker/u8:4+events_unbound	09:46:28	1
2776616	99	61	52,7	cyclictest	2843270	-21	kworker/u8:3+flush-8:0	09:56:27	1
2776612	99	61	50,8	cyclictest	2911799	-21	ntpq	09:21:21	0
2776612	99	61	49,9	cyclictest	2991182	-21	ntpq	10:41:24	0
2776616	99	60	54,4	cyclictest	2872829	-21	kworker/u8:1+events_unbound	08:46:29	1
2776616	99	59	52,5	cyclictest	3046669	-21	kworker/u8:0+flush-8:0	12:00:00	1
2776616	99	59	52,5	cyclictest	3046669	-21	kworker/u8:0+flush-8:0	12:00:00	1
2776616	99	58	52,4	cyclictest	3061829	-21	kworker/u8:2+flush-8:0	12:16:27	1
2776616	99	57	52,3	cyclictest	2843270	-21	kworker/u8:3+flush-8:0	08:41:29	1
2776616	99	56	50,4	cyclictest	2927779	-21	kworker/u8:1+events_unbound	10:01:25	1
2776616	99	56	50,4	cyclictest	2872829	-21	kworker/u8:1+events_unbound	08:51:24	1
2776616	99	56	50,4	cyclictest	2858451	-21	kworker/u8:4+flush-8:0	10:26:27	1
2776616	99	55	51,3	cyclictest	2426287	-21	kworker/u8:3+events_unbound	07:15:02	1
2776616	99	55	49,4	cyclictest	2843270	-21	kworker/u8:3+flush-8:0	09:41:24	1
2776616	99	55	49,4	cyclictest	2843270	-21	kworker/u8:3+flush-8:0	09:41:24	1
2776616	99	55	49,3	cyclictest	2982352	-21	kworker/u8:0+events_unbound	11:20:01	1
2776616	99	55	48,5	cyclictest	2858451	-21	kworker/u8:4+events_unbound	09:06:10	1
2776616	99	55	48,5	cyclictest	2771521	-21	kworker/u8:2+events_unbound	07:11:13	1
2776616	99	55	44,8	cyclictest	2827626	-21	ntpq	07:56:22	1
2867247	2	54	0,2	sleep3	0	-21	swapper/3	08:36:19	3
2776616	99	54	44,7	cyclictest	3090602	-21	ntpq	12:21:21	1
2776612	99	54	43,8	cyclictest	2817520	-21	ntpq	07:46:23	0
2776616	99	53	47,4	cyclictest	2843270	-21	kworker/u8:3+events_unbound	09:36:23	1
2776616	99	53	46,5	cyclictest	2843270	-21	kworker/u8:3+events_unbound	09:21:12	1
2776616	99	53	44,7	cyclictest	2858451	-21	kworker/u8:4+flush-8:0	09:01:22	1
2776612	99	53	35,15	cyclictest	2897013	-21	ntpq	09:06:22	0
2776616	99	52	46,5	cyclictest	2818574	-21	kworker/u8:0+flush-8:0	08:31:22	1
2776612	99	52	41,9	cyclictest	2787482	-21	ntpq	07:16:24	0
2776616	99	51	46,3	cyclictest	2858451	-21	kworker/u8:4+events_unbound	09:31:28	1
2776616	99	51	45,4	cyclictest	2982352	-21	kworker/u8:0+flush-8:0	11:06:09	1
2776616	99	51	45,4	cyclictest	2858451	-21	kworker/u8:4+flush-8:0	10:56:20	1
2776612	99	51	27,21	cyclictest	3011859	-21	latency_hist	11:05:01	0
2961595	2	50	0,3	sleep2	0	-21	swapper/2	10:11:24	2
2776616	99	50	43,6	cyclictest	3046669	-21	kworker/u8:0+flush-8:0	11:41:24	1
2776612	99	50	29,18	cyclictest	2937736	-21	cp	09:50:01	0
2776616	99	48	43,4	cyclictest	2858451	-21	kworker/u8:4+events_unbound	09:26:15	1
2776616	99	48	43,3	cyclictest	2858451	-21	kworker/u8:4+flush-8:0	11:21:32	1
2776616	99	48	42,4	cyclictest	2858451	-21	kworker/u8:4+events_unbound	09:16:13	1
2776616	99	48	41,5	cyclictest	2771521	-21	kworker/u8:2+flush-8:0	07:41:22	1
2776616	99	48	40,6	cyclictest	2858451	-21	kworker/u8:4+flush-8:0	11:51:24	1
2776616	99	48	38,3	cyclictest	2927779	-21	kworker/u8:1+events_unbound	10:31:27	1
2776612	99	48	39,7	cyclictest	2906828	-21	ntpq	09:16:22	0
2776612	99	48	37,8	cyclictest	2926701	-21	ntpq	09:36:21	0
2776612	99	48	16,2	cyclictest	831	-21	mta-sts-daemon	08:07:30	0
2816626	2	47	0,1	sleep3	586	-21	kworker/3:2-events	07:46:19	3
2776616	99	47	42,3	cyclictest	2843270	-21	kworker/u8:3+events_unbound	08:21:14	1
2776616	99	47	42,3	cyclictest	2771521	-21	kworker/u8:2+flush-8:0	08:11:21	1
2776616	99	47	42,3	cyclictest	2771521	-21	kworker/u8:2+flush-8:0	07:51:52	1
2776616	99	47	40,5	cyclictest	2843270	-21	kworker/u8:3+flush-8:0	08:26:23	1
2776616	99	47	38,7	cyclictest	2858451	-21	kworker/u8:4+events_unbound	10:21:29	1
2776616	99	47	36,8	cyclictest	2804011	-21	diskstats	07:36:12	1
2776616	99	47	36,8	cyclictest	2804011	-21	diskstats	07:36:12	1
2902768	2	46	0,2	sleep3	47	1	rcuc/3	09:14:59	3
2776616	99	46	38,5	cyclictest	2982352	-21	kworker/u8:0+flush-8:0	11:11:24	1
2776616	99	45	38,5	cyclictest	2426287	-21	kworker/u8:3+events_unbound	07:46:12	1
2776616	99	45	33,6	cyclictest	2982352	-21	kworker/u8:0+events_unbound	11:01:27	1
2776612	99	45	34,8	cyclictest	3065866	-21	ntpq	11:56:21	0
2776612	99	45	34,8	cyclictest	3065866	-21	ntpq	11:56:20	0
2776612	99	45	28,14	cyclictest	2898862	-21	irqrtprio	09:11:18	0
2776617	99	44	27,15	cyclictest	2883346	-21	aten2_r5power_c	08:56:10	2
2776616	99	44	39,3	cyclictest	2858451	-21	kworker/u8:4+events_unbound	10:36:11	1
2776612	99	44	20,21	cyclictest	3095604	-21	ntpq	12:26:22	0
2776616	99	43	38,4	cyclictest	2996562	-21	kworker/u8:1+events_unbound	10:50:01	1
2776616	99	43	36,5	cyclictest	1940096	-21	kworker/u8:0+events_unbound	07:21:15	1
2776616	99	43	34,6	cyclictest	2956677	-21	ntpq	10:06:25	1
2776612	99	43	33,7	cyclictest	2781465	-21	latency_hist	07:15:02	0
2776612	99	43	26,15	cyclictest	3051003	-21	needreboot	11:41:21	0
2776612	99	42	35,5	cyclictest	2858451	-21	kworker/u8:4+flush-8:0	11:21:15	0
2776612	99	42	18,8	cyclictest	2832598	-21	ntpq	08:01:23	0
2776616	99	41	37,3	cyclictest	3061829	-21	kworker/u8:2+flush-8:0	12:31:22	1
2776616	99	41	35,4	cyclictest	2872829	-21	kworker/u8:1+events_unbound	08:56:29	1
2776616	99	41	35,4	cyclictest	1940096	-21	kworker/u8:0+flush-8:0	07:26:20	1
2776616	99	41	32,6	cyclictest	3080737	-21	ntpq	12:11:22	1
2771784	2	41	4,11	sleep1	0	-21	swapper/1	07:05:45	1
2776617	99	40	24,14	cyclictest	3082031	-21	aten2_r5power_v	12:16:12	2
2776617	99	40	22,16	cyclictest	2966962	-21	unixbench_multi	10:16:29	2
2776616	99	40	34,4	cyclictest	3041657	-21	kworker/u8:1+events_unbound	11:36:24	1
2776616	99	40	33,5	cyclictest	2771521	-21	kworker/u8:2+flush-8:0	08:01:26	1
2776612	99	40	31,6	cyclictest	3106516	-21	latency_hist	12:40:01	0
2776612	99	40	2,36	cyclictest	0	-21	swapper/0	11:46:27	0
2776612	99	40	23,15	cyclictest	2873095	-21	munin-run	08:45:00	0
2776612	99	40	18,20	cyclictest	2806097	-21	kthreadcore	07:36:18	0
2776612	99	40	18,20	cyclictest	2806097	-21	kthreadcore	07:36:18	0
2776617	99	39	20,17	cyclictest	2972244	-21	cron	10:25:00	2
2776616	99	39	32,5	cyclictest	2858451	-21	kworker/u8:4+flush-8:0	11:26:14	1
2776612	99	39	23,14	cyclictest	2952511	-21	cron	10:05:00	0
2776612	99	39	21,16	cyclictest	2933792	-21	kthreadcore	09:46:19	0
2776612	99	39	20,17	cyclictest	18912	-21	cron	07:30:01	0
2776616	99	38	32,4	cyclictest	2982352	-21	kworker/u8:0+flush-8:0	11:31:09	1
2776612	99	38	28,8	cyclictest	2877194	-21	ntpq	08:46:21	0
2776612	99	38	27,8	cyclictest	2976334	-21	ntpq	10:26:22	0
2776612	99	38	19,17	cyclictest	0	-21	swapper/0	07:31:23	0
2776612	99	38	18,2	cyclictest	0	-21	swapper/0	11:10:01	0
2776612	99	38	18,18	cyclictest	3082451	-21	sort	12:16:17	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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