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

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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 Wed Apr 29, 2026 00:44:49)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1696710	99	113	1,110	cyclictest	0	-21	swapper/0	19:29:10	0
1696711	99	109	33,42	cyclictest	23	1	ktimers/1	19:29:10	1
1696716	99	86	1,52	cyclictest	0	-21	swapper/3	20:15:02	3
1696716	99	86	1,52	cyclictest	0	-21	swapper/3	20:15:02	3
1696711	99	76	15,45	cyclictest	1726971	-21	cat	22:00:01	1
1696714	99	73	36,20	cyclictest	0	-21	swapper/2	20:45:00	2
1696714	99	66	31,10	cyclictest	14	-21	rcu_preempt	00:20:01	2
1696710	99	63	57,4	cyclictest	13	1	ktimers/0	21:50:00	0
1696710	99	61	52,4	cyclictest	0	-21	swapper/0	19:40:11	0
1696714	99	58	41,13	cyclictest	31	1	ktimers/2	23:15:13	2
1696710	99	57	4,23	cyclictest	15	-21	rcuc/0	20:45:01	0
1696714	99	56	1,16	cyclictest	14	-21	rcu_preempt	19:40:02	2
1696711	99	54	13,12	cyclictest	1747602	-21	/usr/sbin/munin	00:00:20	1
1696714	99	52	1,29	cyclictest	0	-21	swapper/2	21:10:02	2
1696714	99	52	1,21	cyclictest	0	-21	swapper/2	23:00:01	2
1696710	99	52	1,46	cyclictest	1745795	-21	latency_hist	23:50:01	0
1696710	99	52	1,46	cyclictest	1745795	-21	latency_hist	23:50:00	0
1696714	99	51	1,29	cyclictest	0	-21	swapper/2	19:55:01	2
1696714	99	51	1,23	cyclictest	0	-21	swapper/2	19:20:01	2
1696710	99	50	31,15	cyclictest	13	1	ktimers/0	22:45:28	0
1696710	99	50	2,46	cyclictest	0	-21	swapper/0	00:15:13	0
1696714	99	49	1,28	cyclictest	0	-21	swapper/2	19:50:00	2
1696714	99	49	1,19	cyclictest	0	-21	swapper/2	21:05:02	2
1696710	99	49	39,5	cyclictest	208	50	irq/208-8000000.ethernet	20:10:29	0
1696710	99	49	39,5	cyclictest	208	50	irq/208-8000000.ethernet	20:10:29	0
1696710	99	48	32,14	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	20:50:16	0
1696711	99	47	1,7	cyclictest	0	-21	swapper/1	21:45:01	1
1696710	99	47	7,38	cyclictest	1720857	-21	sed	21:20:29	0
1696710	99	47	30,15	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	23:30:28	0
1696710	99	47	29,15	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	21:50:24	0
1696710	99	47	29,15	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	19:15:05	0
1696710	99	47	29,12	cyclictest	208	50	irq/208-8000000.ethernet	19:40:01	0
1696714	99	46	33,9	cyclictest	0	-21	swapper/2	20:05:01	2
1696714	99	46	33,9	cyclictest	0	-21	swapper/2	20:05:01	2
1696714	99	46	2,21	cyclictest	1735485	-21	apt-get	22:50:01	2
1696710	99	46	38,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	23:25:30	0
1696710	99	46	2,39	cyclictest	1743959	-21	sed	23:35:29	0
1696710	99	46	15,29	cyclictest	1740696	-21	latency_hist	23:20:00	0
1696710	99	46	1,43	cyclictest	0	-21	swapper/0	20:35:16	0
1696714	99	45	1,7	cyclictest	0	-21	swapper/2	00:25:02	2
1696711	99	45	32,9	cyclictest	0	-21	swapper/1	22:20:29	1
1696711	99	45	32,9	cyclictest	0	-21	swapper/1	22:20:28	1
1696711	99	45	28,13	cyclictest	23	1	ktimers/1	22:50:15	1
1696711	99	45	28,12	cyclictest	23	1	ktimers/1	23:45:11	1
1696711	99	45	28,12	cyclictest	23	1	ktimers/1	23:45:11	1
1696710	99	45	1,42	cyclictest	0	-21	swapper/0	23:40:24	0
1696714	99	44	1,29	cyclictest	0	-21	swapper/2	23:30:00	2
1696711	99	44	10,19	cyclictest	22	-21	rcuc/1	20:40:00	1
1696710	99	44	38,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	00:20:28	0
1696710	99	44	2,6	cyclictest	1752500	-21	grep	00:25:29	0
1696710	99	44	1,6	cyclictest	0	-21	swapper/0	20:25:00	0
1696710	99	44	1,6	cyclictest	0	-21	swapper/0	20:25:00	0
1696714	99	43	2,26	cyclictest	0	-21	swapper/2	00:00:01	2
1696711	99	43	4,34	cyclictest	22	-21	rcuc/1	00:35:01	1
1696711	99	43	31,8	cyclictest	1739692	-21	grep	23:10:30	1
1696711	99	43	26,11	cyclictest	0	-21	swapper/1	23:20:25	1
1696711	99	43	25,11	cyclictest	0	-21	swapper/1	21:20:19	1
1696710	99	43	36,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	23:55:28	0
1696710	99	43	18,23	cyclictest	0	-21	swapper/0	21:10:01	0
1696714	99	42	9,17	cyclictest	30	-21	rcuc/2	20:40:00	2
1696714	99	42	33,4	cyclictest	0	-21	swapper/2	19:29:11	2
1696711	99	42	32,7	cyclictest	0	-21	swapper/1	21:30:29	1
1696711	99	42	28,10	cyclictest	1707208	-21	grep	20:00:28	1
1696711	99	42	28,10	cyclictest	1707208	-21	grep	20:00:28	1
1696711	99	42	24,10	cyclictest	0	-21	swapper/1	23:25:22	1
1696711	99	42	22,14	cyclictest	23	1	ktimers/1	23:30:13	1
1696710	99	42	36,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	21:55:21	0
1696710	99	42	35,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	21:00:28	0
1696710	99	42	2,4	cyclictest	1753663	-21	df	00:35:16	0
1696710	99	42	1,3	cyclictest	1708320	-21	latency_hist	20:10:01	0
1696714	99	41	26,10	cyclictest	0	-21	swapper/2	22:40:21	2
1696714	99	41	23,9	cyclictest	0	-21	swapper/2	23:30:25	2
1696711	99	41	3,7	cyclictest	0	-21	swapper/1	23:10:02	1
1696711	99	41	3,7	cyclictest	0	-21	swapper/1	23:10:01	1
1696711	99	41	35,4	cyclictest	0	-21	swapper/1	20:15:01	1
1696711	99	41	35,4	cyclictest	0	-21	swapper/1	20:15:01	1
1696711	99	41	3,13	cyclictest	22	-21	rcuc/1	21:15:01	1
1696711	99	41	29,8	cyclictest	0	-21	swapper/1	22:45:29	1
1696711	99	41	25,10	cyclictest	1733686	-21	grep	22:35:29	1
1696711	99	41	23,11	cyclictest	0	-21	swapper/1	20:30:26	1
1696710	99	41	30,7	cyclictest	0	-21	swapper/0	20:00:28	0
1696710	99	41	30,7	cyclictest	0	-21	swapper/0	20:00:28	0
1696710	99	41	24,15	cyclictest	0	-21	swapper/0	19:55:28	0
1696710	99	41	24,14	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	20:30:29	0
1696710	99	41	1,5	cyclictest	0	-21	swapper/0	23:15:00	0
1696710	99	41	1,38	cyclictest	1741461	-21	uptime	23:20:27	0
1696710	99	41	1,38	cyclictest	0	-21	swapper/0	21:30:21	0
1696710	99	41	1,37	cyclictest	0	-21	swapper/0	22:40:25	0
1696710	99	41	1,37	cyclictest	0	-21	swapper/0	21:20:02	0
1696710	99	41	1,37	cyclictest	0	-21	swapper/0	21:20:02	0
1696714	99	40	28,4	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	20:05:23	2
1696711	99	40	31,6	cyclictest	1259	-21	in:imklog	00:24:59	1
1696710	99	40	33,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	22:00:17	0
1696710	99	40	30,5	cyclictest	0	-21	swapper/0	20:55:22	0
1696710	99	40	29,8	cyclictest	1753473	-21	latency_hist	00:35:00	0
1696710	99	40	28,8	cyclictest	0	-21	swapper/0	00:05:29	0
1696710	99	40	26,10	cyclictest	0	-21	swapper/0	22:35:29	0
1696710	99	40	2,4	cyclictest	1709629	-21	memory	20:15:24	0
1696710	99	40	24,10	cyclictest	0	-21	swapper/0	20:25:30	0
1696710	99	40	1,37	cyclictest	0	-21	swapper/0	22:15:21	0
1696710	99	40	1,37	cyclictest	0	-21	swapper/0	21:35:23	0
1696714	99	39	29,5	cyclictest	1711609	-21	grep	20:25:29	2
1696714	99	39	17,13	cyclictest	1723700	-21	/usr/sbin/munin	21:40:20	2
1696711	99	39	26,7	cyclictest	0	-21	swapper/1	19:10:30	1
1696711	99	39	24,12	cyclictest	0	-21	swapper/1	19:45:02	1
1696711	99	39	23,10	cyclictest	0	-21	swapper/1	23:55:21	1
1696711	99	39	23,10	cyclictest	0	-21	swapper/1	22:55:25	1
1696711	99	39	21,11	cyclictest	0	-21	swapper/1	19:30:28	1
1696711	99	39	19,11	cyclictest	0	-21	swapper/1	21:45:26	1
1696711	99	39	10,17	cyclictest	23	1	ktimers/1	19:35:18	1
1696710	99	39	32,4	cyclictest	0	-21	swapper/0	23:05:24	0
1696710	99	39	32,4	cyclictest	0	-21	swapper/0	23:05:24	0
1696710	99	39	27,6	cyclictest	0	-21	swapper/0	22:05:30	0
1696710	99	39	24,13	cyclictest	0	-21	swapper/0	19:25:01	0
1696710	99	39	22,15	cyclictest	0	-21	swapper/0	00:00:26	0
1696710	99	39	1,36	cyclictest	0	-21	swapper/0	22:10:18	0
1696710	99	39	1,36	cyclictest	0	-21	swapper/0	19:10:13	0
1696714	99	38	28,4	cyclictest	0	-21	swapper/2	20:50:19	2
1696714	99	38	27,6	cyclictest	0	-21	swapper/2	22:10:17	2
1696714	99	38	25,9	cyclictest	1283	-21	cron	21:20:00	2
1696714	99	38	25,9	cyclictest	1283	-21	cron	21:20:00	2
1696714	99	38	25,8	cyclictest	0	-21	swapper/2	00:30:30	2
1696714	99	38	25,7	cyclictest	0	-21	swapper/2	22:20:01	2
1696714	99	38	1,8	cyclictest	0	-21	swapper/2	23:20:02	2
1696711	99	38	9,5	cyclictest	1749079	-21	apt-get	00:10:01	1
1696711	99	38	31,4	cyclictest	1716232	-21	sh	20:55:21	1
1696711	99	38	25,9	cyclictest	0	-21	swapper/1	19:55:29	1
1696711	99	38	23,10	cyclictest	0	-21	swapper/1	22:25:20	1
1696711	99	38	14,14	cyclictest	23	1	ktimers/1	22:15:13	1
1696710	99	38	1,35	cyclictest	0	-21	swapper/0	23:50:12	0
1696710	99	38	1,35	cyclictest	0	-21	swapper/0	23:00:26	0
1696710	99	38	1,35	cyclictest	0	-21	swapper/0	22:20:25	0
1696710	99	38	1,35	cyclictest	0	-21	swapper/0	22:20:24	0
1696710	99	38	1,35	cyclictest	0	-21	swapper/0	20:45:15	0
1696710	99	38	1,2	cyclictest	0	-21	swapper/0	21:40:19	0
1696714	99	37	30,4	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	19:30:27	2
1696714	99	37	29,5	cyclictest	0	-21	swapper/2	19:45:01	2
1696714	99	37	29,4	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	20:15:23	2
1696714	99	37	26,6	cyclictest	0	-21	swapper/2	19:10:28	2
1696714	99	37	20,10	cyclictest	0	-21	swapper/2	21:55:30	2
1696714	99	37	1,20	cyclictest	0	-21	swapper/2	23:55:01	2
1696711	99	37	28,6	cyclictest	0	-21	swapper/1	00:35:21	1
1696711	99	37	24,9	cyclictest	0	-21	swapper/1	22:10:28	1
1696711	99	37	23,9	cyclictest	0	-21	swapper/1	19:20:19	1
1696711	99	37	23,6	cyclictest	0	-21	swapper/1	00:10:20	1
1696711	99	37	23,6	cyclictest	0	-21	swapper/1	00:10:20	1
1696711	99	37	2,28	cyclictest	0	-21	swapper/1	21:00:12	1
1696711	99	37	20,9	cyclictest	0	-21	swapper/1	23:40:28	1
1696711	99	37	1,3	cyclictest	0	-21	swapper/1	20:30:01	1
1696710	99	37	31,4	cyclictest	0	-21	swapper/0	22:53:12	0
1696710	99	37	30,4	cyclictest	0	-21	swapper/0	19:50:26	0
1696710	99	37	30,3	cyclictest	0	-21	swapper/0	19:45:04	0
1696710	99	37	1,34	cyclictest	0	-21	swapper/0	21:10:19	0
1696710	99	37	1,34	cyclictest	0	-21	swapper/0	00:10:16	0
1696710	99	37	1,34	cyclictest	0	-21	swapper/0	00:10:16	0
1696714	99	36	26,5	cyclictest	0	-21	swapper/2	21:45:28	2
1696714	99	36	26,4	cyclictest	0	-21	swapper/2	21:30:30	2
1696714	99	36	23,9	cyclictest	0	-21	swapper/2	21:29:59	2
1696714	99	36	22,9	cyclictest	0	-21	swapper/2	20:30:28	2
1696714	99	36	22,8	cyclictest	0	-21	swapper/2	00:05:02	2
1696714	99	36	1,13	cyclictest	0	-21	swapper/2	00:10:00	2
1696711	99	36	26,5	cyclictest	1746445	-21	grep	23:50:28	1
1696711	99	36	25,6	cyclictest	1743972	-21	grep	23:35:29	1
1696711	99	36	23,8	cyclictest	0	-21	swapper/1	19:15:28	1
1696711	99	36	22,8	cyclictest	1728609	-21	grep	22:05:30	1
1696710	99	36	6,26	cyclictest	0	-21	swapper/0	21:25:17	0
1696710	99	36	30,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	22:30:15	0
1696710	99	36	1,3	cyclictest	0	-21	swapper/0	22:25:17	0
1696710	99	36	1,33	cyclictest	0	-21	swapper/0	22:55:16	0
1696714	99	35	22,8	cyclictest	0	-21	swapper/2	22:05:17	2
1696711	99	35	19,10	cyclictest	1720049	-21	grep	21:15:30	1
1696711	99	35	19,10	cyclictest	1720049	-21	grep	21:15:30	1
1696714	99	34	30,2	cyclictest	0	-21	swapper/2	22:25:28	2
1696714	99	34	25,6	cyclictest	31	1	ktimers/2	23:00:12	2
1696714	99	34	24,6	cyclictest	0	-21	swapper/2	19:20:25	2
1696714	99	34	19,11	cyclictest	0	-21	swapper/2	00:10:28	2
1696714	99	34	19,11	cyclictest	0	-21	swapper/2	00:10:28	2
1696711	99	34	26,4	cyclictest	0	-21	swapper/1	20:15:28	1
1696711	99	34	23,6	cyclictest	0	-21	swapper/1	20:20:29	1
1696711	99	34	23,6	cyclictest	0	-21	swapper/1	20:20:29	1
1696711	99	34	19,13	cyclictest	23	1	ktimers/1	00:25:13	1
1696710	99	34	25,6	cyclictest	1701851	-21	grep	19:30:28	0
1696710	99	34	19,8	cyclictest	0	-21	swapper/0	19:10:02	0
1696714	99	33	27,4	cyclictest	0	-21	swapper/2	23:40:01	2
1696711	99	33	22,8	cyclictest	0	-21	swapper/1	19:45:28	1
1696711	99	33	22,6	cyclictest	0	-21	swapper/1	21:05:30	1
1696714	99	32	23,5	cyclictest	0	-21	swapper/2	22:55:00	2
1696714	99	32	23,5	cyclictest	0	-21	swapper/2	20:45:18	2
1696714	99	32	22,7	cyclictest	0	-21	swapper/2	21:35:20	2
1696714	99	32	20,7	cyclictest	1745662	-21	grep	23:45:29	2
1696714	99	32	20,7	cyclictest	1745662	-21	grep	23:45:29	2
1696714	99	32	14,15	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	22:38:53	2
1696711	99	32	5,4	cyclictest	0	-21	swapper/1	21:40:00	1
1696711	99	32	23,4	cyclictest	14	-21	rcu_preempt	20:40:27	1
1696711	99	32	19,8	cyclictest	0	-21	swapper/1	21:30:01	1
1696714	99	31	24,4	cyclictest	0	-21	swapper/2	21:50:27	2
1696711	99	31	7,17	cyclictest	1750209	-21	/usr/sbin/munin	00:15:20	1
1696711	99	31	26,2	cyclictest	0	-21	swapper/1	19:50:20	1
1696711	99	31	18,9	cyclictest	22	-21	rcuc/1	23:15:15	1
1696714	99	30	22,4	cyclictest	0	-21	swapper/2	00:20:21	2
1696714	99	30	21,7	cyclictest	1727165	-21	/usr/sbin/munin	22:00:10	2
1696714	99	30	20,8	cyclictest	0	-21	swapper/2	20:15:01	2
1696714	99	30	20,8	cyclictest	0	-21	swapper/2	20:15:01	2
1696714	99	30	13,10	cyclictest	0	-21	swapper/2	19:55:19	2
1696714	99	30	12,9	cyclictest	31	1	ktimers/2	23:10:14	2
1696714	99	30	1,27	cyclictest	1732309	-21	/usr/sbin/munin	22:30:20	2
1696714	99	30	11,16	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	23:05:27	2
1696714	99	30	11,16	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	23:05:27	2
1696711	99	30	20,7	cyclictest	0	-21	swapper/1	21:50:30	1
1696711	99	30	17,8	cyclictest	22	-21	rcuc/1	20:45:16	1
1696711	99	30	1,24	cyclictest	0	-21	swapper/1	22:30:24	1
1696711	99	30	1,23	cyclictest	1727946	-21	sed	22:05:01	1
1696714	99	29	16,8	cyclictest	0	-21	swapper/2	21:15:01	2
1696711	99	29	18,6	cyclictest	0	-21	swapper/1	23:05:00	1
1696714	99	28	20,6	cyclictest	1753603	-21	/usr/sbin/munin	00:35:16	2
1696714	99	28	20,6	cyclictest	1660	-21	snmpd	20:22:35	2
1696714	99	28	20,6	cyclictest	1660	-21	snmpd	20:22:35	2
1696714	99	28	11,15	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	20:55:19	2
1696711	99	28	21,5	cyclictest	0	-21	swapper/1	20:50:20	1
1696711	99	28	20,5	cyclictest	22	-21	rcuc/1	22:40:29	1
1696711	99	28	17,8	cyclictest	23	1	ktimers/1	20:05:05	1
1696711	99	28	1,3	cyclictest	0	-21	swapper/1	19:10:01	1
1696714	99	26	17,5	cyclictest	0	-21	swapper/2	21:20:28	2
1696714	99	25	20,3	cyclictest	1744597	-21	proc_pri	23:40:28	2
1696714	99	25	15,7	cyclictest	0	-21	swapper/2	22:20:22	2
1696714	99	25	15,7	cyclictest	0	-21	swapper/2	22:20:22	2
1696714	99	19	9,8	cyclictest	0	-21	swapper/2	19:10:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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