OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, slot #2

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 50 highest latencies:

System rackbslot2.osadl.org (updated Sat May 31, 2025 12:44:40)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2913306	2	233	204,19	sleep2	0	-21	swapper/2	07:09:21	2
2913130	2	228	200,18	sleep3	0	-21	swapper/3	07:07:08	3
2913320	2	219	189,20	sleep1	0	-21	swapper/1	07:09:32	1
2913224	2	219	190,19	sleep0	0	-21	swapper/0	07:08:18	0
3042615	2	148	0,1	sleep3	3042614	-21	ntpq	09:35:24	3
3126753	2	92	0,1	sleep3	3126749	-21	/usr/share/muni	11:15:03	3
2913501	99	60	56,3	cyclictest	3147283	-21	kworker/u8:0+events_unbound	11:40:02	0
2913514	99	58	57,1	cyclictest	2947008	-21	awk	07:45:16	3
2913509	99	58	55,2	cyclictest	2935598	-21	kworker/u8:1+flush-179:0	08:10:06	2
2913514	99	54	48,4	cyclictest	2917986	-21	/usr/share/muni	07:15:09	3
2913514	99	52	47,2	cyclictest	2877594	-21	kworker/u8:3+events_unbound	07:35:10	3
2913514	99	50	47,2	cyclictest	3108371	-21	kworker/u8:0+flush-179:0	10:55:04	3
2913509	99	50	48,1	cyclictest	0	-21	swapper/2	08:45:01	2
2913514	99	49	46,3	cyclictest	3130323	-21	kworker/u8:3+flush-179:0	11:20:10	3
2913501	99	49	42,5	cyclictest	3095579	-21	/usr/share/muni	10:40:00	0
2913514	99	48	44,3	cyclictest	3017614	-21	kworker/u8:0+flush-179:0	09:55:05	3
2913514	99	48	44,3	cyclictest	3017614	-21	kworker/u8:0+flush-179:0	09:55:05	3
2913509	99	48	44,3	cyclictest	3156383	-31	munin-html	11:45:33	2
2913509	99	48	44,3	cyclictest	2895498	-21	kworker/u8:5+events_unbound	07:15:02	2
2913501	99	48	41,2	cyclictest	3017614	-21	kworker/u8:0+events_unbound	10:00:14	0
2913509	99	47	44,2	cyclictest	2935598	-21	kworker/u8:1+flush-179:0	08:15:05	2
2913509	99	47	43,3	cyclictest	3078827	-21	kworker/u8:2+events_unbound	11:10:09	2
2913514	99	46	43,2	cyclictest	3086095	-21	kworker/u8:1+flush-179:0	10:30:06	3
2913514	99	46	42,3	cyclictest	3017614	-21	kworker/u8:0+flush-179:0	09:10:10	3
2913509	99	46	43,2	cyclictest	3117295	-21	kworker/u8:5+flush-179:0	12:10:25	2
2913509	99	46	43,2	cyclictest	2913124	-21	kworker/u8:1+events_unbound	07:10:08	2
2913501	99	46	43,2	cyclictest	3017614	-21	kworker/u8:0+flush-179:0	09:25:04	0
2913514	99	45	42,2	cyclictest	3112853	-21	kworker/u8:1+events_unbound	11:05:09	3
2913514	99	45	42,2	cyclictest	3078827	-21	kworker/u8:2+flush-179:0	11:10:08	3
2913514	99	45	42,2	cyclictest	3064587	-21	kworker/u8:3+flush-179:0	10:10:09	3
2913509	99	45	42,2	cyclictest	3169605	-21	kworker/u8:1+events_unbound	12:35:08	2
2913514	99	44	39,4	cyclictest	3113629	-21	/usr/share/muni	11:00:02	3
2913514	99	44	33,8	cyclictest	3117295	-21	kworker/u8:5+flush-179:0	12:05:06	3
2913504	99	44	5,14	cyclictest	0	-21	swapper/1	07:45:15	1
2913504	99	44	39,4	cyclictest	3004550	-21	latency_hist	08:55:00	1
2913514	99	43	40,2	cyclictest	2935598	-21	kworker/u8:1+events_unbound	08:05:06	3
2913514	99	43	40,2	cyclictest	2877594	-21	kworker/u8:3+events_unbound	08:00:05	3
2913514	99	43	39,2	cyclictest	3017614	-21	kworker/u8:0+flush-179:0	09:50:08	3
2913509	99	43	40,2	cyclictest	2895498	-21	kworker/u8:5+flush-179:0	07:50:06	2
2913509	99	43	40,1	cyclictest	2831124	-21	kworker/2:0+pm	08:40:01	2
2913509	99	43	39,3	cyclictest	3017614	-21	kworker/u8:0+flush-179:0	09:17:04	2
2913509	99	43	39,3	cyclictest	2999874	-21	kworker/u8:3+flush-179:0	08:55:10	2
2913504	99	43	38,4	cyclictest	2974550	-21	kworker/u8:2+flush-179:0	09:15:07	1
2913514	99	42	0,41	cyclictest	0	-21	swapper/3	12:35:03	3
2913509	99	42	39,2	cyclictest	3104072	-21	kworker/u8:4+events_unbound	10:55:09	2
2913501	99	42	36,4	cyclictest	2974735	-21	/usr/share/muni	08:20:02	0
2913514	99	41	38,2	cyclictest	3143014	-21	kworker/u8:1+events_unbound	11:35:01	3
2913514	99	41	38,2	cyclictest	2986899	-21	kworker/u8:0+events_unbound	08:40:10	3
2913514	99	41	38,2	cyclictest	2895498	-21	kworker/u8:5+flush-179:0	08:20:05	3
2913514	99	41	38,2	cyclictest	2895498	-21	kworker/u8:5+flush-179:0	08:15:09	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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