OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, slot #1

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

Characteristics of the 50 highest latencies:

System rackbslot1.osadl.org (updated Tue Oct 08, 2024 12:44:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2705519	2	213	170,33	sleep2	0	-21	swapper/2	07:06:11	2
2705519	2	213	170,33	sleep2	0	-21	swapper/2	07:06:11	2
2705741	2	207	184,14	sleep1	0	-21	swapper/1	07:08:59	1
2705741	2	207	184,14	sleep1	0	-21	swapper/1	07:08:59	1
2705809	2	196	166,20	sleep0	0	-21	swapper/0	07:09:52	0
2705809	2	196	166,20	sleep0	0	-21	swapper/0	07:09:52	0
2705565	2	193	165,19	sleep3	0	-21	swapper/3	07:06:45	3
2705565	2	193	165,19	sleep3	0	-21	swapper/3	07:06:45	3
2705979	99	109	86,22	cyclictest	2837340	-21	ChromeDriver	15:20:43	2
2705979	99	65	61,3	cyclictest	2727063	-21	kworker/u8:4+events_unbound	07:40:01	2
2705979	99	61	58,2	cyclictest	2824529	-21	kworker/u8:0+events_unbound	12:20:13	2
2705979	99	60	56,3	cyclictest	2938423	-21	chrome	11:45:02	2
2705979	99	60	56,3	cyclictest	2938423	-21	chrome	11:45:01	2
2876698	2	55	0,1	sleep1	0	-21	swapper/1	10:30:15	1
2705979	99	53	48,4	cyclictest	2858159	-21	latency_hist	10:10:01	2
2705983	99	52	47,4	cyclictest	2773400	-31	munin-html	08:25:35	3
2705979	99	52	46,4	cyclictest	2782535	-21	latency_hist	08:40:00	2
2705977	99	52	48,2	cyclictest	2787053	-21	snmp_ryswitch2.	08:45:02	1
2705977	99	51	46,3	cyclictest	2761695	-21	kworker/u8:1+flush-179:0	08:56:09	1
2705979	99	50	47,2	cyclictest	2794903	-21	kworker/u8:3+events_unbound	09:40:14	2
2705977	99	50	44,4	cyclictest	2824529	-21	kworker/u8:0+flush-179:0	11:00:12	1
2705977	99	48	44,3	cyclictest	2811903	-21	kworker/u8:1+events_unbound	09:15:32	1
2705977	99	48	34,13	cyclictest	2794903	-21	kworker/u8:3+events_unbound	09:09:46	1
2705977	99	48	34,13	cyclictest	2794903	-21	kworker/u8:3+events_unbound	09:09:45	1
2705976	99	48	44,3	cyclictest	2920903	-21	kworker/u8:3+flush-179:0	11:21:11	0
2705979	99	47	45,2	cyclictest	2753923	-21	kworker/u8:0+events_unbound	08:05:33	2
2705979	99	47	43,3	cyclictest	2819832	-31	munin-html	09:20:33	2
2705977	99	47	43,3	cyclictest	2782270	-21	kworker/u8:0+flush-179:0	09:10:12	1
2705977	99	47	41,4	cyclictest	2723552	-21	/usr/share/muni	07:30:14	1
2705979	99	46	43,3	cyclictest	2824529	-21	kworker/u8:0+events_unbound	12:10:29	2
2705979	99	46	42,3	cyclictest	2841171	-21	kworker/u8:1+events_unbound	10:15:04	2
2705979	99	45	42,2	cyclictest	2689202	-21	kworker/2:1+pm	07:17:09	2
2705979	99	45	41,3	cyclictest	2794903	-21	kworker/u8:3+events_unbound	09:35:30	2
2705979	99	45	40,3	cyclictest	2736072	-21	chrome	07:45:01	2
2705977	99	44	41,2	cyclictest	2794903	-21	kworker/u8:3+events_unbound	09:40:32	1
2705977	99	44	40,3	cyclictest	2753923	-21	kworker/u8:0+flush-179:0	08:20:06	1
2705979	99	43	40,2	cyclictest	2824529	-21	kworker/u8:0+events_unbound	10:40:19	2
2705979	99	43	40,2	cyclictest	2824529	-21	kworker/u8:0+events_unbound	10:40:19	2
2705979	99	43	39,3	cyclictest	2707683	-21	kworker/u8:2+events_unbound	07:33:07	2
2705979	99	43	0,17	cyclictest	2722937	-31	munin-html	07:25:41	2
2705977	99	43	41,1	cyclictest	2244131	-1	kworker/1:2H+kblockd	11:37:08	1
2705977	99	43	40,2	cyclictest	2753923	-21	kworker/u8:0+flush-179:0	08:05:29	1
2705977	99	43	38,4	cyclictest	2773367	-21	kworker/u8:2+flush-179:0	08:35:13	1
2705976	99	43	0,42	cyclictest	1	-21	systemd	07:49:59	0
2861653	2	42	0,1	sleep1	2861652	-21	sensors_temp	10:10:31	1
2705983	99	42	35,5	cyclictest	2837432	-21	/usr/share/muni	09:45:14	3
2705983	99	42	29,12	cyclictest	2731465	-21	kworker/3:1+pm	09:27:08	3
2705979	99	42	8,28	cyclictest	2753455	-21	cat	08:05:01	2
2705979	99	42	38,3	cyclictest	2727063	-21	kworker/u8:4+events_unbound	07:58:31	2
2705979	99	42	30,1	cyclictest	2727232	-21	kworker/2:0+pm	07:46:01	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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