OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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
Compare latency of primary with shadow system

Characteristics of the 792 highest latencies:

System rackeslot6s.osadl.org (updated Tue Aug 18, 2026 12:44:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3592580	99	86	2,82	cyclictest	0	-21	swapper/0	08:00:15	0
3592580	99	68	8,18	cyclictest	3593406	-21	munin-node	07:15:00	0
3592582	99	65	14,26	cyclictest	3602471	-21	gpg-connect-age	08:05:02	1
3592582	99	52	41,8	cyclictest	3635670	-21	munin-plugin-st	11:19:59	1
3592582	99	52	40,8	cyclictest	3623857	-21	munin-plugin-st	10:10:00	1
3592582	99	52	14,13	cyclictest	3609149	-21	apt-get	08:45:02	1
3592580	99	51	43,5	cyclictest	3617015	-21	munin-plugin-st	09:30:00	0
3592580	99	51	39,9	cyclictest	0	-21	swapper/0	08:55:01	0
3592585	99	50	7,21	cyclictest	31	1	ktimers/2	07:40:00	2
3592585	99	50	39,7	cyclictest	3594526	-21	sendmail	07:20:00	2
3592585	99	50	34,8	cyclictest	31	1	ktimers/2	10:00:15	2
3592585	99	49	35,10	cyclictest	3609149	-21	apt-get	08:45:01	2
3592580	99	49	15,31	cyclictest	0	-21	swapper/0	09:20:28	0
3592585	99	48	35,9	cyclictest	0	-21	swapper/2	07:45:29	2
3592585	99	48	35,4	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	08:23:23	2
3592585	99	48	34,10	cyclictest	3625452	-21	grep	10:15:27	2
3592585	99	48	34,10	cyclictest	3625452	-21	grep	10:15:27	2
3592582	99	48	40,4	cyclictest	3644209	-21	munin-plugin-st	12:09:59	1
3592585	99	47	38,5	cyclictest	3596306	-21	munin-plugin-st	07:30:00	2
3592585	99	47	31,11	cyclictest	31	1	ktimers/2	12:30:13	2
3592582	99	47	35,8	cyclictest	0	-21	swapper/1	11:30:28	1
3592585	99	46	34,7	cyclictest	3603973	-21	grep	08:10:27	2
3592585	99	46	30,6	cyclictest	0	-21	swapper/2	09:25:02	2
3592582	99	46	33,8	cyclictest	0	-21	swapper/1	11:35:30	1
3592582	99	46	33,8	cyclictest	0	-21	swapper/1	11:35:30	1
3592580	99	46	39,4	cyclictest	3598843	-21	munin-plugin-st	07:45:01	0
3592580	99	46	36,7	cyclictest	208	50	irq/208-8000000.ethernet	08:10:28	0
3592585	99	45	32,5	cyclictest	0	-21	swapper/2	09:55:28	2
3592585	99	45	29,9	cyclictest	0	-21	swapper/2	08:05:29	2
3592585	99	45	29,9	cyclictest	0	-21	swapper/2	07:15:02	2
3592582	99	45	33,7	cyclictest	0	-21	swapper/1	08:40:30	1
3592582	99	45	31,10	cyclictest	0	-21	swapper/1	08:10:28	1
3592582	99	45	30,9	cyclictest	0	-21	swapper/1	11:50:29	1
3592582	99	45	30,9	cyclictest	0	-21	swapper/1	11:50:29	1
3592582	99	45	27,11	cyclictest	0	-21	swapper/1	07:15:01	1
3592585	99	44	33,5	cyclictest	0	-21	swapper/2	11:40:20	2
3592585	99	44	32,7	cyclictest	0	-21	swapper/2	12:15:21	2
3592585	99	44	31,8	cyclictest	3627198	-21	grep	10:25:29	2
3592582	99	44	36,4	cyclictest	3627229	-21	cron	10:30:00	1
3592582	99	44	30,9	cyclictest	0	-21	swapper/1	11:40:28	1
3592582	99	44	30,9	cyclictest	0	-21	swapper/1	09:20:29	1
3592582	99	44	30,8	cyclictest	0	-21	swapper/1	09:45:28	1
3592582	99	44	30,10	cyclictest	0	-21	swapper/1	08:40:00	1
3592582	99	44	26,11	cyclictest	0	-21	swapper/1	11:55:28	1
3592580	99	44	29,11	cyclictest	0	-21	swapper/0	12:00:22	0
3592580	99	44	1,40	cyclictest	0	-21	swapper/0	10:30:12	0
3592585	99	43	31,8	cyclictest	0	-21	swapper/2	11:10:28	2
3592585	99	43	30,9	cyclictest	0	-21	swapper/2	08:30:29	2
3592585	99	43	27,10	cyclictest	0	-21	swapper/2	11:35:01	2
3592585	99	43	23,13	cyclictest	0	-21	swapper/2	07:20:24	2
3592582	99	43	32,7	cyclictest	0	-21	swapper/1	11:00:29	1
3592582	99	43	31,8	cyclictest	0	-21	swapper/1	07:25:02	1
3592582	99	43	30,9	cyclictest	0	-21	swapper/1	12:25:01	1
3592582	99	43	30,9	cyclictest	0	-21	swapper/1	12:25:01	1
3592582	99	43	30,9	cyclictest	0	-21	swapper/1	07:55:31	1
3592582	99	43	29,9	cyclictest	0	-21	swapper/1	09:15:30	1
3592582	99	43	29,9	cyclictest	0	-21	swapper/1	07:50:28	1
3592582	99	43	28,10	cyclictest	0	-21	swapper/1	08:15:28	1
3592580	99	43	34,6	cyclictest	3641581	-21	munin-plugin-st	11:55:01	0
3592580	99	43	34,6	cyclictest	3641581	-21	munin-plugin-st	11:55:01	0
3592580	99	43	33,6	cyclictest	0	-21	swapper/0	12:35:29	0
3592580	99	43	28,11	cyclictest	0	-21	swapper/0	07:15:25	0
3592580	99	43	1,40	cyclictest	0	-21	swapper/0	09:10:27	0
3592585	99	42	32,7	cyclictest	3611740	-21	grep	08:55:29	2
3592585	99	42	30,7	cyclictest	0	-21	swapper/2	12:05:29	2
3592585	99	42	30,7	cyclictest	0	-21	swapper/2	10:55:21	2
3592585	99	42	30,7	cyclictest	0	-21	swapper/2	10:55:21	2
3592585	99	42	29,9	cyclictest	0	-21	swapper/2	12:30:00	2
3592585	99	42	28,7	cyclictest	3602214	-21	grep	08:00:29	2
3592585	99	42	25,6	cyclictest	0	-21	swapper/2	10:40:00	2
3592582	99	42	34,6	cyclictest	3649362	-21	sendmail	12:39:59	1
3592582	99	42	30,7	cyclictest	0	-21	swapper/1	12:10:29	1
3592582	99	42	29,9	cyclictest	0	-21	swapper/1	11:45:29	1
3592582	99	42	27,9	cyclictest	0	-21	swapper/1	08:25:30	1
3592582	99	42	27,7	cyclictest	0	-21	swapper/1	12:30:01	1
3592580	99	42	30,8	cyclictest	0	-21	swapper/0	08:25:01	0
3592580	99	42	27,10	cyclictest	0	-21	swapper/0	07:45:20	0
3592580	99	42	2,3	cyclictest	3636121	-21	if_eth1	11:20:24	0
3592585	99	41	28,8	cyclictest	3598782	-21	grep	07:40:28	2
3592585	99	41	24,12	cyclictest	0	-21	swapper/2	12:15:01	2
3592585	99	41	1,23	cyclictest	3592576	-21	cyclictest	10:15:01	2
3592582	99	41	32,4	cyclictest	3625554	-21	sendmail	10:20:01	1
3592582	99	41	32,4	cyclictest	3625554	-21	sendmail	10:20:01	1
3592582	99	41	30,8	cyclictest	0	-21	swapper/1	10:00:29	1
3592582	99	41	29,8	cyclictest	0	-21	swapper/1	09:55:29	1
3592582	99	41	28,9	cyclictest	0	-21	swapper/1	09:35:30	1
3592582	99	41	27,9	cyclictest	0	-21	swapper/1	10:40:30	1
3592582	99	41	27,9	cyclictest	0	-21	swapper/1	07:25:29	1
3592582	99	41	24,10	cyclictest	0	-21	swapper/1	12:15:29	1
3592580	99	41	35,5	cyclictest	0	-21	swapper/0	10:40:13	0
3592580	99	41	3,35	cyclictest	3642423	-21	munin-run	12:00:00	0
3592580	99	41	32,5	cyclictest	0	-21	swapper/0	10:00:00	0
3592580	99	41	31,6	cyclictest	0	-21	swapper/0	09:05:30	0
3592580	99	41	30,8	cyclictest	0	-21	swapper/0	10:50:01	0
3592580	99	41	29,9	cyclictest	0	-21	swapper/0	08:35:00	0
3592580	99	41	28,8	cyclictest	0	-21	swapper/0	09:45:29	0
3592585	99	40	29,5	cyclictest	0	-21	swapper/2	09:10:27	2
3592585	99	40	28,7	cyclictest	0	-21	swapper/2	09:45:28	2
3592585	99	40	27,7	cyclictest	0	-21	swapper/2	09:15:28	2
3592585	99	40	26,6	cyclictest	0	-21	swapper/2	09:35:21	2
3592585	99	40	25,7	cyclictest	0	-21	swapper/2	12:35:21	2
3592582	99	40	30,7	cyclictest	3619450	-21	unixbench_multi	09:40:29	1
3592582	99	40	29,7	cyclictest	0	-21	swapper/1	08:05:30	1
3592580	99	40	30,6	cyclictest	0	-21	swapper/0	09:55:01	0
3592580	99	40	17,20	cyclictest	0	-21	swapper/0	08:05:28	0
3592580	99	40	1,4	cyclictest	3612194	-21	tune2fs	09:00:20	0
3592580	99	40	1,4	cyclictest	3612194	-21	tune2fs	09:00:20	0
3592580	99	40	1,4	cyclictest	0	-21	swapper/0	08:40:01	0
3592585	99	39	30,5	cyclictest	0	-21	swapper/2	11:00:29	2
3592585	99	39	27,7	cyclictest	0	-21	swapper/2	10:40:31	2
3592585	99	39	25,7	cyclictest	0	-21	swapper/2	09:10:00	2
3592585	99	39	24,10	cyclictest	0	-21	swapper/2	08:35:27	2
3592585	99	39	19,14	cyclictest	0	-21	swapper/2	08:25:30	2
3592582	99	39	25,10	cyclictest	0	-21	swapper/1	07:50:01	1
3592582	99	39	23,9	cyclictest	0	-21	swapper/1	10:55:30	1
3592582	99	39	23,9	cyclictest	0	-21	swapper/1	10:55:30	1
3592580	99	39	34,3	cyclictest	208	50	irq/208-8000000.ethernet	10:00:23	0
3592580	99	39	3,3	cyclictest	3631449	-21	apt	10:54:59	0
3592580	99	39	1,6	cyclictest	0	-21	swapper/0	11:45:01	0
3592585	99	38	30,5	cyclictest	3641488	-21	grep	11:50:28	2
3592585	99	38	30,5	cyclictest	3641488	-21	grep	11:50:28	2
3592585	99	38	30,4	cyclictest	0	-21	swapper/2	12:20:29	2
3592585	99	38	30,4	cyclictest	0	-21	swapper/2	12:20:29	2
3592585	99	38	27,8	cyclictest	30	-21	rcuc/2	11:40:01	2
3592585	99	38	27,8	cyclictest	30	-21	rcuc/2	11:40:01	2
3592585	99	38	27,7	cyclictest	3631393	-21	grep	10:50:29	2
3592585	99	38	22,8	cyclictest	3621183	-21	grep	09:50:27	2
3592582	99	38	29,5	cyclictest	0	-21	swapper/1	07:30:29	1
3592582	99	38	28,6	cyclictest	0	-21	swapper/1	09:00:28	1
3592582	99	38	28,6	cyclictest	0	-21	swapper/1	09:00:27	1
3592580	99	38	31,4	cyclictest	3639045	-21	munin-plugin-st	11:40:00	0
3592580	99	38	31,4	cyclictest	3639045	-21	munin-plugin-st	11:40:00	0
3592580	99	38	1,35	cyclictest	0	-21	swapper/0	12:20:20	0
3592580	99	38	1,35	cyclictest	0	-21	swapper/0	12:20:20	0
3592580	99	38	1,35	cyclictest	0	-21	swapper/0	11:30:15	0
3592580	99	38	1,35	cyclictest	0	-21	swapper/0	07:20:20	0
3592580	99	38	1,2	cyclictest	0	-21	swapper/0	11:15:22	0
3592585	99	37	28,4	cyclictest	0	-21	swapper/2	10:30:26	2
3592585	99	37	27,5	cyclictest	3612636	-21	grep	09:00:28	2
3592585	99	37	27,5	cyclictest	3612636	-21	grep	09:00:28	2
3592585	99	37	26,7	cyclictest	3626297	-21	grep	10:20:28	2
3592585	99	37	25,7	cyclictest	0	-21	swapper/2	08:15:27	2
3592585	99	37	24,7	cyclictest	0	-21	swapper/2	12:00:32	2
3592582	99	37	4,22	cyclictest	23	1	ktimers/1	11:25:00	1
3592582	99	37	27,6	cyclictest	0	-21	swapper/1	10:30:30	1
3592582	99	37	25,7	cyclictest	0	-21	swapper/1	08:50:29	1
3592582	99	37	24,9	cyclictest	0	-21	swapper/1	09:30:29	1
3592582	99	37	24,8	cyclictest	0	-21	swapper/1	11:05:28	1
3592582	99	37	23,9	cyclictest	0	-21	swapper/1	07:15:26	1
3592582	99	37	23,7	cyclictest	0	-21	swapper/1	10:45:29	1
3592582	99	37	22,11	cyclictest	0	-21	swapper/1	10:20:29	1
3592580	99	37	29,4	cyclictest	14	-21	rcu_preempt	08:45:27	0
3592580	99	37	26,8	cyclictest	0	-21	swapper/0	11:30:01	0
3592585	99	36	3,25	cyclictest	3623818	-21	unixbench_singl	10:05:30	2
3592585	99	36	27,6	cyclictest	3637278	-21	grep	11:25:30	2
3592585	99	36	25,6	cyclictest	0	-21	swapper/2	11:20:30	2
3592585	99	36	24,9	cyclictest	0	-21	swapper/2	09:25:30	2
3592585	99	36	24,7	cyclictest	0	-21	swapper/2	11:05:25	2
3592585	99	36	22,9	cyclictest	0	-21	swapper/2	09:30:28	2
3592585	99	36	1,4	cyclictest	0	-21	swapper/2	09:45:00	2
3592582	99	36	23,9	cyclictest	0	-21	swapper/1	09:05:29	1
3592582	99	36	23,9	cyclictest	0	-21	swapper/1	08:20:30	1
3592582	99	36	2,28	cyclictest	0	-21	swapper/1	12:30:23	1
3592580	99	36	31,3	cyclictest	0	-21	swapper/0	10:05:24	0
3592580	99	36	29,5	cyclictest	3615222	-21	cron	09:20:00	0
3592580	99	36	1,33	cyclictest	0	-21	swapper/0	12:25:09	0
3592580	99	36	1,28	cyclictest	3626483	-21	latency_hist	10:25:01	0
3592585	99	35	27,5	cyclictest	0	-21	swapper/2	11:15:29	2
3592585	99	35	26,6	cyclictest	3642309	-21	grep	11:55:29	2
3592582	99	35	24,7	cyclictest	0	-21	swapper/1	10:35:30	1
3592582	99	35	22,7	cyclictest	0	-21	swapper/1	10:10:31	1
3592580	99	35	28,4	cyclictest	208	50	irq/208-8000000.ethernet	11:10:17	0
3592580	99	35	28,4	cyclictest	208	50	irq/208-8000000.ethernet	07:30:20	0
3592580	99	35	28,4	cyclictest	0	-21	swapper/0	07:55:31	0
3592580	99	35	27,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	10:20:00	0
3592580	99	35	27,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	10:20:00	0
3592580	99	35	2,4	cyclictest	1	-21	systemd	07:50:15	0
3592580	99	35	24,7	cyclictest	0	-21	swapper/0	07:25:30	0
3592580	99	35	19,9	cyclictest	0	-21	swapper/0	12:20:00	0
3592580	99	35	1,4	cyclictest	0	-21	swapper/0	09:45:01	0
3592580	99	35	1,32	cyclictest	0	-21	swapper/0	11:00:25	0
3592580	99	35	1,2	cyclictest	0	-21	swapper/0	12:35:02	0
3592585	99	34	25,5	cyclictest	0	-21	swapper/2	07:50:26	2
3592585	99	34	24,6	cyclictest	0	-21	swapper/2	07:35:01	2
3592585	99	34	18,12	cyclictest	31	1	ktimers/2	11:45:10	2
3592582	99	34	22,8	cyclictest	0	-21	swapper/1	07:40:28	1
3592580	99	34	28,4	cyclictest	208	50	irq/208-8000000.ethernet	12:09:59	0
3592580	99	34	28,3	cyclictest	3597981	-21	cron	07:40:00	0
3592580	99	34	28,3	cyclictest	197	50	irq/27-20000000.i2c	12:10:28	0
3592580	99	34	27,4	cyclictest	208	50	irq/208-8000000.ethernet	08:25:25	0
3592580	99	34	27,4	cyclictest	0	-21	swapper/0	10:10:28	0
3592580	99	34	26,6	cyclictest	3633878	-21	grep	11:05:28	0
3592580	99	34	23,9	cyclictest	3628576	-21	memory	10:35:27	0
3592585	99	33	5,19	cyclictest	3610025	-21	head	08:45:30	2
3592582	99	33	25,3	cyclictest	0	-21	swapper/1	07:35:28	1
3592582	99	33	22,7	cyclictest	0	-21	swapper/1	09:10:28	1
3592580	99	33	23,7	cyclictest	0	-21	swapper/0	08:40:29	0
3592580	99	33	21,9	cyclictest	3617727	-21	/usr/sbin/munin	09:30:29	0
3592580	99	33	18,6	cyclictest	0	-21	swapper/0	11:50:01	0
3592580	99	33	13,15	cyclictest	208	50	irq/208-8000000.ethernet	08:55:18	0
3592585	99	32	23,6	cyclictest	3610805	-21	grep	08:50:28	2
3592582	99	32	25,5	cyclictest	3607403	-21	unixbench_singl	08:30:28	1
3592582	99	32	21,8	cyclictest	0	-21	swapper/1	10:50:29	1
3592582	99	32	19,9	cyclictest	0	-21	swapper/1	09:55:00	1
3592580	99	32	26,4	cyclictest	208	50	irq/208-8000000.ethernet	10:25:26	0
3592580	99	32	25,4	cyclictest	238	50	irq/422-mmc1	08:15:24	0
3592585	99	31	6,13	cyclictest	3592672	-21	latency_hist	07:10:01	2
3592582	99	31	2,4	cyclictest	1321	-21	sendmail-mta	12:00:11	1
3592582	99	31	1,14	cyclictest	22	-21	rcuc/1	11:10:02	1
3592580	99	31	2,27	cyclictest	3618056	-21	/usr/sbin/munin	09:35:12	0
3592580	99	31	1,5	cyclictest	3631722	-21	diskstats	10:55:18	0
3592580	99	31	1,5	cyclictest	3631722	-21	diskstats	10:55:18	0
3592585	99	30	4,17	cyclictest	3630559	-21	head	10:45:30	2
3592585	99	30	21,5	cyclictest	0	-21	swapper/2	07:55:31	2
3592582	99	30	23,4	cyclictest	0	-21	swapper/1	08:55:30	1
3592580	99	29	1,23	cyclictest	0	-21	swapper/0	07:10:00	0
3592582	99	27	15,6	cyclictest	3616961	-21	grep	09:25:30	1
3592582	99	26	16,7	cyclictest	0	-21	swapper/1	11:25:21	1
3592582	99	20	11,6	cyclictest	0	-21	swapper/1	07:10:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2020-10-04 - 12:21