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 Aug 26, 2026 12:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
389076	2	191	0,3	sleep3	0	-21	swapper/3	09:12:35	3
266160	99	61	56,4	cyclictest	246481	-21	kworker/u8:0+events_unbound	07:17:51	1
266160	99	61	56,4	cyclictest	246481	-21	kworker/u8:0+events_unbound	07:17:51	1
266160	99	60	55,3	cyclictest	467741	-21	kworker/u8:2+events_unbound	11:45:00	1
266160	99	60	55,3	cyclictest	418452	-21	kworker/u8:1+events_unbound	10:25:01	1
266161	99	59	40,16	cyclictest	582316	-21	cat	12:25:01	2
523085	2	57	0,4	sleep1	28	1	rcuc/1	11:27:36	1
266160	99	56	50,4	cyclictest	393598	-21	kworker/u8:3+events_unbound	09:20:01	1
266160	99	53	47,5	cyclictest	266001	-21	kworker/u8:3+flush-8:0	07:32:49	1
266160	99	53	47,4	cyclictest	432913	-21	kworker/u8:0+events_unbound	10:02:41	1
266161	99	52	43,7	cyclictest	275	-21	systemd-journal	12:30:01	2
266160	99	51	46,3	cyclictest	3066123	-21	kworker/u8:1+events_unbound	07:57:40	1
266160	99	50	44,5	cyclictest	358734	-21	kworker/u8:0+flush-8:0	09:07:47	1
266160	99	50	43,5	cyclictest	467741	-21	kworker/u8:2+flush-8:0	11:57:47	1
266160	99	49	44,4	cyclictest	432913	-21	kworker/u8:0+events_unbound	10:12:40	1
266160	99	49	43,4	cyclictest	348564	-21	kworker/u8:4+events_unbound	08:47:35	1
266155	99	49	39,7	cyclictest	383449	-21	latency_hist	09:05:01	0
266160	99	48	42,4	cyclictest	427949	-21	kworker/u8:3+events_unbound	10:37:40	1
266155	99	48	40,6	cyclictest	408308	-21	kworker/u8:2+flush-8:0	09:50:00	0
450705	2	47	0,3	sleep3	575	-21	kworker/3:2-events	10:12:42	3
266161	99	47	39,6	cyclictest	343041	-21	gpgv	08:25:01	2
266160	99	47	42,4	cyclictest	427949	-21	kworker/u8:3+events_unbound	10:32:47	1
266160	99	47	40,5	cyclictest	317509	-21	kworker/u8:3+events_unbound	08:40:02	1
509655	2	46	0,5	sleep3	45	1	irq_work/3	11:12:42	3
266160	99	46	40,4	cyclictest	348193	-21	base64	08:30:01	1
266160	99	46	38,6	cyclictest	432913	-21	kworker/u8:0+flush-8:0	10:27:34	1
266160	99	45	41,2	cyclictest	467741	-21	kworker/u8:2+events_unbound	10:42:37	1
266160	99	45	39,5	cyclictest	502775	-21	kworker/u8:3+flush-8:0	11:47:45	1
266160	99	45	39,5	cyclictest	502775	-21	kworker/u8:3+flush-8:0	11:47:45	1
266160	99	45	38,5	cyclictest	348564	-21	kworker/u8:4+events_unbound	09:27:54	1
266160	99	44	39,4	cyclictest	502775	-21	kworker/u8:3+flush-8:0	12:22:34	1
266160	99	44	37,6	cyclictest	358734	-21	kworker/u8:0+events_unbound	09:12:36	1
266160	99	44	37,5	cyclictest	502775	-21	kworker/u8:3+flush-8:0	12:37:39	1
266160	99	44	36,6	cyclictest	467741	-21	kworker/u8:2+events_unbound	11:22:48	1
266160	99	44	36,6	cyclictest	271030	-21	latency_hist	07:15:00	1
266161	99	43	35,6	cyclictest	358378	-21	gpgv	08:40:01	2
266160	99	43	36,5	cyclictest	562303	-21	kworker/u8:0+flush-8:0	12:07:47	1
266160	99	43	34,7	cyclictest	333489	-21	/usr/sbin/munin	08:17:45	1
266160	99	43	31,9	cyclictest	358257	-21	latency_hist	08:40:01	1
266155	99	43	0,41	cyclictest	1	-21	systemd	07:57:29	0
261461	2	43	3,34	sleep1	0	-21	swapper/1	07:06:28	1
261461	2	43	3,34	sleep1	0	-21	swapper/1	07:06:28	1
266160	99	42	38,3	cyclictest	467741	-21	kworker/u8:2+events_unbound	10:52:37	1
266160	99	42	37,4	cyclictest	427949	-21	kworker/u8:3+events_unbound	10:17:49	1
266160	99	42	37,4	cyclictest	317516	-21	kworker/u8:4+flush-8:0	08:22:45	1
266160	99	42	35,5	cyclictest	482997	-21	kworker/u8:1+flush-8:0	11:02:46	1
266160	99	42	35,5	cyclictest	467741	-21	kworker/u8:2+events_unbound	10:57:46	1
266155	99	42	33,6	cyclictest	275	-21	systemd-journal	10:07:29	0
266155	99	42	32,8	cyclictest	398793	-21	/usr/sbin/munin	09:22:44	0
266155	99	42	25,13	cyclictest	502775	-21	kworker/u8:3+flush-8:0	11:47:33	0
266155	99	42	25,13	cyclictest	502775	-21	kworker/u8:3+flush-8:0	11:47:33	0
505743	2	41	0,3	sleep3	575	-21	kworker/3:2+events	11:07:44	3
266160	99	41	37,3	cyclictest	432913	-21	kworker/u8:0+events_unbound	11:37:48	1
266160	99	41	35,4	cyclictest	423181	-21	latency_hist	09:45:01	1
266160	99	41	35,4	cyclictest	358734	-21	kworker/u8:0+flush-8:0	08:55:01	1
266155	99	41	2,35	cyclictest	256276	-21	kworker/0:0+events	07:27:32	0
266160	99	40	37,2	cyclictest	348564	-21	kworker/u8:4+events_unbound	09:37:45	1
266160	99	40	36,3	cyclictest	502775	-21	kworker/u8:3+flush-8:0	12:02:49	1
266160	99	40	36,3	cyclictest	502775	-21	kworker/u8:3+flush-8:0	11:07:41	1
266160	99	40	35,3	cyclictest	3066123	-21	kworker/u8:1+events_unbound	07:27:39	1
266160	99	40	34,4	cyclictest	358734	-21	kworker/u8:0+flush-8:0	09:47:46	1
266155	99	40	35,3	cyclictest	557114	-21	cron	12:00:01	0
266155	99	40	1,33	cyclictest	256276	-21	kworker/0:0+events	07:40:06	0
266161	99	39	29,8	cyclictest	317800	-21	cp	08:00:01	2
266161	99	39	25,12	cyclictest	477771	-21	dpkg	10:40:01	2
266160	99	39	34,3	cyclictest	502775	-21	kworker/u8:3+flush-8:0	12:17:41	1
266160	99	39	34,3	cyclictest	502775	-21	kworker/u8:3+events_unbound	11:17:41	1
266160	99	39	34,3	cyclictest	358734	-21	kworker/u8:0+events_unbound	09:32:50	1
266160	99	39	33,5	cyclictest	432913	-21	kworker/u8:0+flush-8:0	09:57:45	1
266160	99	39	33,5	cyclictest	432913	-21	kworker/u8:0+flush-8:0	09:57:45	1
266160	99	39	32,5	cyclictest	502775	-21	kworker/u8:3+flush-8:0	12:12:50	1
266155	99	39	29,8	cyclictest	323545	-21	/usr/sbin/munin	08:07:43	0
266155	99	39	0,37	cyclictest	1	-21	systemd	08:48:30	0
266161	99	38	22,14	cyclictest	408999	-21	fschecks_count	09:32:37	2
266160	99	38	34,3	cyclictest	348563	-21	kworker/u8:2+flush-8:0	08:32:41	1
266160	99	38	34,3	cyclictest	308029	-21	kworker/u8:0+flush-8:0	07:52:47	1
266160	99	38	33,4	cyclictest	246481	-21	kworker/u8:0+events_unbound	07:22:40	1
266160	99	38	32,5	cyclictest	348564	-21	kworker/u8:4+flush-8:0	09:02:41	1
266160	99	38	31,5	cyclictest	502775	-21	kworker/u8:3+flush-8:0	11:52:46	1
266155	99	38	2,31	cyclictest	297964	-21	kworker/0:2+events	11:21:46	0
266155	99	38	2,29	cyclictest	297964	-21	kworker/0:2+events	08:37:32	0
266160	99	37	32,3	cyclictest	467741	-21	kworker/u8:2+events_unbound	10:47:48	1
266155	99	37	2,33	cyclictest	297964	-21	kworker/0:2+events	11:39:20	0
266155	99	37	2,29	cyclictest	297964	-21	kworker/0:2+events	12:17:32	0
266161	99	36	27,7	cyclictest	275	-21	systemd-journal	08:15:00	2
266161	99	36	21,13	cyclictest	398876	-21	aten2_r5power_e	09:22:34	2
266155	99	36	27,7	cyclictest	358952	-21	apt-get	08:42:33	0
266155	99	36	1,33	cyclictest	297964	-21	kworker/0:2+events	10:13:08	0
266161	99	35	26,7	cyclictest	275	-21	systemd-journal	07:55:00	2
266160	99	35	30,3	cyclictest	288356	-21	kworker/u8:2+flush-8:0	07:42:39	1
266160	99	35	30,3	cyclictest	266001	-21	kworker/u8:3+flush-8:0	07:47:48	1
266155	99	35	27,5	cyclictest	352547	-21	ntpq	08:32:44	0
266155	99	35	25,7	cyclictest	567030	-21	latency_hist	12:10:01	0
266161	99	34	18,2	cyclictest	428619	-21	aten2_r5power_e	09:52:35	2
266161	99	34	18,2	cyclictest	428619	-21	aten2_r5power_e	09:52:35	2
266160	99	34	29,4	cyclictest	317516	-21	kworker/u8:4+flush-8:0	08:02:37	1
266160	99	34	25,5	cyclictest	502775	-21	kworker/u8:3+flush-8:0	12:27:54	1
266155	99	34	9,24	cyclictest	297964	-21	kworker/0:2+events	11:52:50	0
266155	99	34	3,29	cyclictest	297964	-21	kworker/0:2+events	09:42:48	0
266155	99	34	29,4	cyclictest	317516	-21	kworker/u8:4+flush-8:0	08:22:36	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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