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 Tue Aug 11, 2026 12:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
295985	99	200	179,19	cyclictest	481662	-21	munin-run	10:15:01	0
525873	2	192	0,4	sleep3	0	-21	swapper/3	10:52:54	3
295992	99	101	96,3	cyclictest	481714	-21	apt-config	10:15:01	2
366377	2	87	0,3	sleep3	575	-21	kworker/3:2-events	08:17:54	3
463789	2	86	0,5	sleep3	0	-21	swapper/3	09:57:53	3
295989	99	86	83,2	cyclictest	0	-21	swapper/1	10:15:01	1
450576	2	61	0,2	sleep3	48	1	ktimers/3	09:42:57	3
295989	99	58	52,4	cyclictest	441840	-21	kworker/u8:1+flush-8:0	09:43:06	1
295992	99	55	50,4	cyclictest	596685	-21	kworker/u8:1+events_unbound	12:03:04	2
295992	99	54	48,4	cyclictest	596685	-21	kworker/u8:1+events_unbound	12:22:50	2
295985	99	54	32,7	cyclictest	532705	-21	/usr/sbin/munin	11:02:56	0
295989	99	51	44,5	cyclictest	491711	-21	kworker/u8:4+flush-8:0	10:32:57	1
295992	99	50	46,3	cyclictest	461086	-21	kworker/u8:0+events_unbound	10:00:00	2
295989	99	49	43,4	cyclictest	466603	-21	kworker/u8:2+events_unbound	10:22:49	1
295989	99	49	41,6	cyclictest	622497	-21	/usr/sbin/munin	12:33:02	1
295992	99	48	44,3	cyclictest	491711	-21	kworker/u8:4+events_unbound	11:15:01	2
295989	99	48	43,4	cyclictest	427158	-21	kworker/u8:2+flush-8:0	09:48:00	1
295989	99	48	42,4	cyclictest	532109	-21	kworker/u8:3+events_unbound	11:12:51	1
295989	99	47	42,4	cyclictest	530744	-21	kworker/u8:2+events_unbound	11:35:00	1
295989	99	47	42,4	cyclictest	3694173	-21	kworker/u8:4+events_unbound	08:33:06	1
295989	99	47	40,5	cyclictest	596685	-21	kworker/u8:1+flush-8:0	12:18:13	1
295989	99	47	40,5	cyclictest	427158	-21	kworker/u8:2+flush-8:0	09:52:58	1
295989	99	46	40,4	cyclictest	461086	-21	kworker/u8:0+flush-8:0	10:18:43	1
295992	99	45	41,3	cyclictest	491711	-21	kworker/u8:4+events_unbound	10:52:58	2
295992	99	44	39,4	cyclictest	596685	-21	kworker/u8:1+events_unbound	12:38:03	2
295989	99	44	40,3	cyclictest	582476	-21	kworker/u8:3+events_unbound	11:57:50	1
295989	99	44	37,5	cyclictest	572364	-21	kworker/u8:0+flush-8:0	11:52:49	1
295989	99	43	38,4	cyclictest	532109	-21	kworker/u8:3+events_unbound	11:27:46	1
295989	99	43	38,4	cyclictest	532109	-21	kworker/u8:3+events_unbound	11:27:46	1
295989	99	43	38,4	cyclictest	367244	-21	kworker/u8:1+flush-8:0	08:23:02	1
493902	2	42	0,3	sleep3	575	-21	kworker/3:2+events	10:22:53	3
295992	99	42	37,4	cyclictest	530744	-21	kworker/u8:2+events_unbound	10:57:55	2
295989	99	42	37,3	cyclictest	507259	-21	kworker/u8:0+events_unbound	10:50:00	1
295992	99	41	35,4	cyclictest	3694173	-21	kworker/u8:4+events_unbound	08:27:51	2
295989	99	41	37,3	cyclictest	347206	-21	kworker/u8:0+events_unbound	09:32:45	1
295989	99	41	35,5	cyclictest	347206	-21	kworker/u8:0+events_unbound	08:37:47	1
295989	99	41	35,4	cyclictest	530744	-21	kworker/u8:2+events_unbound	10:57:57	1
295989	99	41	34,5	cyclictest	530744	-21	kworker/u8:2+flush-8:0	12:03:00	1
295989	99	41	34,5	cyclictest	470957	-21	ntpq	10:02:57	1
295989	99	40	35,3	cyclictest	466603	-21	kworker/u8:2+events_unbound	10:27:51	1
295989	99	40	35,3	cyclictest	347206	-21	kworker/u8:0+flush-8:0	09:12:51	1
295989	99	40	34,4	cyclictest	3694173	-21	kworker/u8:4+events_unbound	07:22:51	1
295985	99	40	30,8	cyclictest	275	-21	systemd-journal	11:55:00	0
295989	99	39	34,3	cyclictest	530744	-21	kworker/u8:2+events_unbound	11:43:00	1
291381	2	39	4,32	sleep2	0	-21	swapper/2	07:07:32	2
295989	99	38	33,4	cyclictest	3694173	-21	kworker/u8:4+events_unbound	07:15:00	1
295989	99	38	32,4	cyclictest	532109	-21	kworker/u8:3+events_unbound	11:07:49	1
295989	99	38	32,4	cyclictest	312984	-21	kworker/u8:2+flush-8:0	08:02:55	1
295985	99	38	2,34	cyclictest	357458	-21	kworker/0:0+events	08:33:02	0
295992	99	37	33,3	cyclictest	436368	-21	kworker/u8:3+events_unbound	09:28:02	2
295989	99	37	33,3	cyclictest	491711	-21	kworker/u8:4+events_unbound	11:02:49	1
295989	99	37	32,4	cyclictest	596685	-21	kworker/u8:1+flush-8:0	12:27:47	1
295989	99	37	32,4	cyclictest	530744	-21	kworker/u8:2+flush-8:0	11:47:48	1
295989	99	37	31,4	cyclictest	530744	-21	kworker/u8:2+flush-8:0	12:07:58	1
295989	99	37	28,7	cyclictest	556612	-21	ntpq	11:22:59	1
295985	99	37	25,9	cyclictest	551555	-21	ntpq	11:17:56	0
295992	99	36	32,3	cyclictest	312984	-21	kworker/u8:2+events_unbound	08:15:00	2
295989	99	36	32,3	cyclictest	3694173	-21	kworker/u8:4+events_unbound	07:42:54	1
295989	99	36	31,4	cyclictest	507259	-21	kworker/u8:0+flush-8:0	10:37:58	1
295989	99	36	25,8	cyclictest	347383	-21	awk	08:00:00	1
295992	99	35	30,3	cyclictest	596685	-21	kworker/u8:1+events_unbound	12:10:38	2
295989	99	35	31,3	cyclictest	441840	-21	kworker/u8:1+events_unbound	09:39:07	1
295989	99	35	31,3	cyclictest	347206	-21	kworker/u8:0+events_unbound	08:48:01	1
295989	99	35	31,3	cyclictest	347206	-21	kworker/u8:0+events_unbound	08:48:01	1
295989	99	35	29,4	cyclictest	507259	-21	kworker/u8:0+events_unbound	10:52:52	1
295989	99	35	29,4	cyclictest	3694173	-21	kworker/u8:4+events_unbound	08:27:47	1
295985	99	35	24,9	cyclictest	490893	-21	mandb	10:18:45	0
295989	99	34	29,3	cyclictest	402351	-21	kworker/u8:1+flush-8:0	09:07:54	1
295989	99	34	29,3	cyclictest	3682258	-21	kworker/u8:1+events_unbound	07:52:52	1
295989	99	34	28,5	cyclictest	312984	-21	kworker/u8:2+flush-8:0	07:32:49	1
295985	99	34	25,7	cyclictest	507457	-21	/usr/sbin/munin	10:38:02	0
295985	99	34	24,7	cyclictest	572325	-21	latency_hist	11:40:01	0
295985	99	34	1,28	cyclictest	357458	-21	kworker/0:0+events	08:52:42	0
295992	99	33	26,5	cyclictest	3682258	-21	kworker/u8:1+events_unbound	07:30:04	2
295989	99	33	29,3	cyclictest	596685	-21	kworker/u8:1+events_unbound	12:22:52	1
295989	99	33	29,2	cyclictest	367392	-21	cron	08:20:00	1
295989	99	33	28,4	cyclictest	596685	-21	kworker/u8:1+flush-8:0	12:13:05	1
295989	99	33	28,4	cyclictest	436368	-21	kworker/u8:3+flush-8:0	10:08:03	1
295985	99	33	26,5	cyclictest	392961	-21	grep	08:47:47	0
295985	99	33	26,5	cyclictest	392961	-21	grep	08:47:47	0
295985	99	33	10,19	cyclictest	295864	-21	kworker/0:2+events	07:46:54	0
295989	99	32	28,3	cyclictest	347206	-21	kworker/u8:0+flush-8:0	09:28:03	1
295989	99	32	27,3	cyclictest	567234	-21	kworker/u8:1+flush-8:0	11:37:53	1
295985	99	32	9,17	cyclictest	357458	-21	kworker/0:0+events	10:02:46	0
295985	99	32	8,22	cyclictest	328586	-21	kworker/0:1+events	07:42:54	0
295985	99	32	25,5	cyclictest	627016	-21	latency_hist	12:35:00	0
295985	99	32	24,6	cyclictest	327611	-21	latency_hist	07:40:01	0
295985	99	32	22,8	cyclictest	596650	-21	ntpq	12:03:01	0
295985	99	32	2,28	cyclictest	295864	-21	kworker/0:2+events	07:22:58	0
295985	99	32	1,26	cyclictest	537422	-21	kworker/0:2+events	12:40:00	0
295985	99	32	12,18	cyclictest	537422	-21	kworker/0:2+events	11:31:50	0
295992	99	31	26,4	cyclictest	466603	-21	kworker/u8:2+events_unbound	10:20:03	2
295989	99	31	25,4	cyclictest	347206	-21	kworker/u8:0+flush-8:0	08:52:56	1
295989	99	31	24,5	cyclictest	352820	-21	apt-get	08:07:43	1
295985	99	31	25,4	cyclictest	367882	-21	apt-get	08:22:43	0
295985	99	31	2,27	cyclictest	357458	-21	kworker/0:0+events	09:37:48	0
295992	99	30	26,3	cyclictest	530744	-21	kworker/u8:2+flush-8:0	11:03:19	2
295992	99	30	26,3	cyclictest	3694173	-21	kworker/u8:4+events_unbound	08:33:08	2
295992	99	30	26,3	cyclictest	347206	-21	kworker/u8:0+flush-8:0	08:55:05	2
295992	99	30	25,3	cyclictest	275	-21	systemd-journal	09:05:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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