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 all highest latencies:

System rackeslot6s.osadl.org (updated Sun Jun 14, 2026 00:44:50)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
358782	99	78	7,47	cyclictest	0	-21	swapper/2	20:35:01	2
358782	99	58	3,18	cyclictest	0	-21	swapper/2	21:05:01	2
358777	99	58	28,25	cyclictest	0	-21	swapper/0	22:10:26	0
358777	99	56	45,6	cyclictest	376938	-21	munin-plugin-st	20:55:00	0
358777	99	56	45,6	cyclictest	376938	-21	munin-plugin-st	20:55:00	0
358782	99	55	1,33	cyclictest	370930	-21	apt-get	20:20:01	2
358782	99	52	21,14	cyclictest	369446	-21	/usr/sbin/munin	20:10:19	2
358782	99	52	17,28	cyclictest	364677	-21	kernelversion	19:40:23	2
358777	99	52	42,6	cyclictest	0	-21	swapper/0	22:15:29	0
358777	99	51	43,4	cyclictest	369249	-21	munin-plugin-st	20:10:00	0
358780	99	50	1,25	cyclictest	0	-21	swapper/1	20:35:01	1
358777	99	50	44,3	cyclictest	0	-21	swapper/0	00:20:12	0
358782	99	49	35,10	cyclictest	0	-21	swapper/2	00:25:28	2
358777	99	49	2,12	cyclictest	0	-21	swapper/0	00:20:01	0
358777	99	48	40,5	cyclictest	410140	-21	munin-plugin-st	00:09:59	0
358777	99	48	39,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	23:00:18	0
358777	99	48	2,41	cyclictest	379413	-21	head	21:05:31	0
358777	99	48	1,16	cyclictest	13	1	ktimers/0	21:45:01	0
358782	99	47	38,4	cyclictest	360716	-21	munin-plugin-st	19:20:00	2
358782	99	47	34,9	cyclictest	0	-21	swapper/2	23:05:00	2
358780	99	47	7,33	cyclictest	0	-21	swapper/1	21:35:23	1
358780	99	47	32,10	cyclictest	0	-21	swapper/1	20:55:30	1
358777	99	47	41,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	20:20:15	0
358782	99	46	24,15	cyclictest	0	-21	swapper/2	23:35:20	2
358777	99	46	40,4	cyclictest	408437	-21	cron	00:00:00	0
358777	99	46	31,9	cyclictest	0	-21	swapper/0	22:25:01	0
358777	99	46	2,3	cyclictest	384207	-21	/usr/sbin/munin	21:35:24	0
358777	99	46	15,4	cyclictest	0	-21	swapper/0	23:35:21	0
358782	99	45	33,9	cyclictest	1283	-21	cron	22:10:00	2
358780	99	45	7,3	cyclictest	0	-21	swapper/1	23:10:16	1
358782	99	44	35,5	cyclictest	401460	-21	grep	23:15:28	2
358782	99	44	33,8	cyclictest	31	1	ktimers/2	21:15:14	2
358782	99	44	33,8	cyclictest	31	1	ktimers/2	21:15:14	2
358782	99	44	32,7	cyclictest	0	-21	swapper/2	20:20:31	2
358782	99	44	15,27	cyclictest	368260	-21	tr	20:00:29	2
358780	99	44	32,8	cyclictest	0	-21	swapper/1	22:25:01	1
358780	99	44	28,11	cyclictest	0	-21	swapper/1	00:00:29	1
358780	99	44	28,11	cyclictest	0	-21	swapper/1	00:00:29	1
358777	99	44	37,4	cyclictest	208	50	irq/208-8000000.ethernet	19:45:20	0
358777	99	44	37,4	cyclictest	208	50	irq/208-8000000.ethernet	19:45:20	0
358780	99	43	36,4	cyclictest	371781	-21	unixbench_multi	20:20:31	1
358780	99	43	30,9	cyclictest	411823	-21	munin-plugin-st	00:20:01	1
358780	99	43	27,9	cyclictest	402329	-21	grep	23:20:29	1
358777	99	43	8,25	cyclictest	371064	-21	cat	20:20:01	0
358777	99	43	3,4	cyclictest	395144	-21	sh	22:40:21	0
358777	99	43	27,12	cyclictest	0	-21	swapper/0	21:00:29	0
358777	99	43	26,14	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	00:00:11	0
358777	99	43	26,14	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	00:00:11	0
358777	99	43	1,40	cyclictest	0	-21	swapper/0	21:25:21	0
358777	99	43	1,40	cyclictest	0	-21	swapper/0	19:30:25	0
358782	99	42	30,5	cyclictest	384546	-21	sendmail	21:40:00	2
358780	99	42	33,5	cyclictest	0	-21	swapper/1	20:45:26	1
358780	99	42	27,8	cyclictest	0	-21	swapper/1	22:25:28	1
358780	99	42	27,10	cyclictest	0	-21	swapper/1	00:10:36	1
358777	99	42	1,35	cyclictest	0	-21	swapper/0	19:25:01	0
358777	99	42	1,35	cyclictest	0	-21	swapper/0	19:25:01	0
358780	99	41	4,3	cyclictest	0	-21	swapper/1	20:30:01	1
358777	99	41	34,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	23:05:29	0
358777	99	41	32,6	cyclictest	0	-21	swapper/0	20:44:59	0
358777	99	41	32,6	cyclictest	0	-21	swapper/0	19:50:31	0
358777	99	41	27,9	cyclictest	0	-21	swapper/0	19:55:28	0
358777	99	41	2,4	cyclictest	362155	-21	meminfo	19:25:23	0
358777	99	41	1,4	cyclictest	0	-21	swapper/0	21:30:18	0
358777	99	41	1,38	cyclictest	0	-21	swapper/0	20:00:20	0
358782	99	40	32,4	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	19:45:23	2
358782	99	40	32,4	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	19:45:23	2
358782	99	40	31,6	cyclictest	0	-21	swapper/2	19:25:28	2
358782	99	40	28,9	cyclictest	0	-21	swapper/2	23:25:01	2
358780	99	40	33,4	cyclictest	0	-21	swapper/1	20:35:28	1
358780	99	40	32,4	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	22:55:26	1
358780	99	40	30,6	cyclictest	388661	-21	grep	22:00:29	1
358777	99	40	34,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	22:25:13	0
358777	99	40	30,7	cyclictest	0	-21	swapper/0	23:30:28	0
358777	99	40	27,9	cyclictest	0	-21	swapper/0	00:35:01	0
358777	99	40	1,37	cyclictest	0	-21	swapper/0	20:25:20	0
358782	99	39	26,9	cyclictest	0	-21	swapper/2	22:00:31	2
358782	99	39	26,9	cyclictest	0	-21	swapper/2	21:05:30	2
358782	99	39	25,9	cyclictest	0	-21	swapper/2	22:15:29	2
358782	99	39	13,24	cyclictest	392677	-21	if_eth1	22:25:22	2
358780	99	39	5,18	cyclictest	374617	-21	/usr/sbin/munin	20:40:19	1
358780	99	39	23,8	cyclictest	0	-21	swapper/1	22:35:28	1
358777	99	39	33,3	cyclictest	0	-21	swapper/0	00:10:32	0
358777	99	39	32,4	cyclictest	0	-21	swapper/0	22:45:24	0
358777	99	39	32,4	cyclictest	0	-21	swapper/0	22:45:24	0
358777	99	39	31,5	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	20:10:24	0
358777	99	39	31,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	23:25:25	0
358777	99	39	28,7	cyclictest	0	-21	swapper/0	00:25:29	0
358777	99	39	22,15	cyclictest	0	-21	swapper/0	23:55:01	0
358777	99	39	22,15	cyclictest	0	-21	swapper/0	23:20:14	0
358777	99	39	1,4	cyclictest	364147	-21	users	19:35:32	0
358777	99	39	1,3	cyclictest	374404	-21	munin-run	20:40:00	0
358777	99	39	1,36	cyclictest	0	-21	swapper/0	22:55:23	0
358782	99	38	8,27	cyclictest	0	-21	swapper/2	21:45:27	2
358782	99	38	8,15	cyclictest	407803	-21	/usr/sbin/munin	23:55:19	2
358782	99	38	26,7	cyclictest	0	-21	swapper/2	00:15:28	2
358782	99	38	10,25	cyclictest	386672	-21	if_eth1	21:50:23	2
358780	99	38	29,5	cyclictest	0	-21	swapper/1	19:55:28	1
358780	99	38	29,5	cyclictest	0	-21	swapper/1	00:35:29	1
358780	99	38	27,6	cyclictest	403156	-21	grep	23:25:28	1
358780	99	38	26,8	cyclictest	0	-21	swapper/1	21:50:28	1
358780	99	38	24,9	cyclictest	0	-21	swapper/1	21:45:29	1
358780	99	38	24,9	cyclictest	0	-21	swapper/1	20:15:01	1
358777	99	38	32,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	22:30:22	0
358777	99	38	32,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	20:55:23	0
358777	99	38	31,4	cyclictest	0	-21	swapper/0	23:15:20	0
358777	99	38	31,4	cyclictest	0	-21	swapper/0	23:10:18	0
358777	99	38	27,7	cyclictest	0	-21	swapper/0	23:45:29	0
358777	99	38	1,35	cyclictest	0	-21	swapper/0	19:15:19	0
358782	99	37	27,4	cyclictest	0	-21	swapper/2	22:40:26	2
358782	99	37	26,8	cyclictest	0	-21	swapper/2	00:30:29	2
358782	99	37	26,5	cyclictest	393795	-21	grep	22:30:29	2
358780	99	37	26,7	cyclictest	0	-21	swapper/1	00:20:30	1
358780	99	37	25,7	cyclictest	0	-21	swapper/1	20:50:29	1
358780	99	37	25,7	cyclictest	0	-21	swapper/1	20:50:29	1
358780	99	37	24,9	cyclictest	0	-21	swapper/1	20:00:30	1
358780	99	37	24,9	cyclictest	0	-21	swapper/1	00:25:25	1
358780	99	37	23,10	cyclictest	0	-21	swapper/1	22:45:26	1
358780	99	37	23,10	cyclictest	0	-21	swapper/1	22:45:26	1
358777	99	37	32,3	cyclictest	0	-21	swapper/0	22:36:32	0
358777	99	37	31,4	cyclictest	208	50	irq/208-8000000.ethernet	21:15:13	0
358777	99	37	31,4	cyclictest	208	50	irq/208-8000000.ethernet	21:15:13	0
358777	99	37	25,8	cyclictest	0	-21	swapper/0	20:30:28	0
358777	99	37	25,8	cyclictest	0	-21	swapper/0	19:10:28	0
358777	99	37	25,8	cyclictest	0	-21	swapper/0	19:10:28	0
358777	99	37	22,13	cyclictest	387350	-21	/usr/sbin/munin	21:55:21	0
358777	99	37	22,13	cyclictest	387350	-21	/usr/sbin/munin	21:55:21	0
358777	99	37	1,4	cyclictest	0	-21	swapper/0	21:45:23	0
358777	99	37	1,3	cyclictest	0	-21	swapper/0	22:05:13	0
358777	99	37	1,34	cyclictest	0	-21	swapper/0	19:40:13	0
358782	99	36	27,5	cyclictest	375194	-21	grep	20:40:29	2
358782	99	36	25,8	cyclictest	0	-21	swapper/2	22:35:28	2
358782	99	36	25,6	cyclictest	0	-21	swapper/2	23:25:21	2
358782	99	36	24,7	cyclictest	0	-21	swapper/2	23:30:28	2
358782	99	36	24,6	cyclictest	0	-21	swapper/2	22:10:26	2
358782	99	36	23,9	cyclictest	0	-21	swapper/2	19:35:31	2
358780	99	36	25,7	cyclictest	0	-21	swapper/1	23:35:23	1
358780	99	36	22,8	cyclictest	0	-21	swapper/1	23:15:28	1
358780	99	36	19,9	cyclictest	399768	-21	grep	23:05:28	1
358780	99	36	1,29	cyclictest	0	-21	swapper/1	20:05:23	1
358777	99	36	24,9	cyclictest	0	-21	swapper/0	00:35:29	0
358777	99	36	1,3	cyclictest	0	-21	swapper/0	23:40:19	0
358782	99	35	28,4	cyclictest	0	-21	swapper/2	23:50:26	2
358782	99	35	28,4	cyclictest	0	-21	swapper/2	21:00:00	2
358782	99	35	26,5	cyclictest	398012	-21	grep	22:55:27	2
358782	99	35	26,5	cyclictest	0	-21	swapper/2	22:45:29	2
358782	99	35	26,5	cyclictest	0	-21	swapper/2	22:45:28	2
358782	99	35	26,5	cyclictest	0	-21	swapper/2	21:25:28	2
358782	99	35	25,7	cyclictest	0	-21	swapper/2	20:25:29	2
358782	99	35	25,7	cyclictest	0	-21	swapper/2	19:50:31	2
358780	99	35	25,7	cyclictest	0	-21	swapper/1	19:20:28	1
358780	99	35	25,7	cyclictest	0	-21	swapper/1	19:20:28	1
358780	99	35	25,6	cyclictest	14	-21	rcu_preempt	22:30:29	1
358780	99	35	22,9	cyclictest	0	-21	swapper/1	21:10:30	1
358780	99	35	19,12	cyclictest	23	1	ktimers/1	23:50:14	1
358780	99	35	1,4	cyclictest	0	-21	swapper/1	19:35:01	1
358780	99	35	1,28	cyclictest	0	-21	swapper/1	21:05:17	1
358777	99	35	1,3	cyclictest	0	-21	swapper/0	22:03:41	0
358782	99	34	26,6	cyclictest	384751	-21	/usr/sbin/munin	21:40:15	2
358782	99	34	25,6	cyclictest	400627	-21	unixbench_singl	23:10:26	2
358782	99	34	23,7	cyclictest	0	-21	swapper/2	20:05:29	2
358782	99	34	21,8	cyclictest	0	-21	swapper/2	21:55:30	2
358782	99	34	21,8	cyclictest	0	-21	swapper/2	21:55:30	2
358782	99	34	20,10	cyclictest	0	-21	swapper/2	19:25:01	2
358782	99	34	20,10	cyclictest	0	-21	swapper/2	19:25:01	2
358782	99	34	1,31	cyclictest	0	-21	swapper/2	20:45:21	2
358782	99	34	1,27	cyclictest	0	-21	swapper/2	22:50:12	2
358780	99	34	26,5	cyclictest	0	-21	swapper/1	21:30:27	1
358780	99	34	25,5	cyclictest	366620	-21	grep	19:50:31	1
358780	99	34	24,7	cyclictest	0	-21	swapper/1	22:10:26	1
358780	99	34	23,7	cyclictest	0	-21	swapper/1	23:55:29	1
358780	99	34	2,2	cyclictest	0	-21	swapper/1	20:20:02	1
358780	99	34	22,8	cyclictest	0	-21	swapper/1	21:25:28	1
358780	99	34	1,27	cyclictest	0	-21	swapper/1	23:40:10	1
358777	99	34	28,4	cyclictest	0	-21	swapper/0	21:50:25	0
358777	99	34	21,9	cyclictest	0	-21	swapper/0	20:45:27	0
358777	99	34	1,28	cyclictest	397377	-21	wc	22:55:00	0
358782	99	33	26,4	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	00:05:36	2
358782	99	33	1,26	cyclictest	0	-21	swapper/2	22:20:11	2
358782	99	33	1,26	cyclictest	0	-21	swapper/2	19:10:21	2
358782	99	33	1,26	cyclictest	0	-21	swapper/2	19:10:21	2
358780	99	33	25,4	cyclictest	0	-21	swapper/1	21:40:25	1
358780	99	33	24,4	cyclictest	0	-21	swapper/1	19:25:19	1
358780	99	33	23,6	cyclictest	378526	-21	grep	21:00:29	1
358780	99	33	23,5	cyclictest	0	-21	swapper/1	22:05:21	1
358780	99	33	17,12	cyclictest	23	1	ktimers/1	22:50:15	1
358780	99	33	1,2	cyclictest	365233	-21	apt-get	19:45:14	1
358780	99	33	1,2	cyclictest	365233	-21	apt-get	19:45:14	1
358777	99	33	28,3	cyclictest	0	-21	swapper/0	21:13:42	0
358782	99	32	26,4	cyclictest	409200	-21	unixbench_multi	00:00:30	2
358782	99	32	26,4	cyclictest	409200	-21	unixbench_multi	00:00:29	2
358782	99	32	25,5	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	21:20:24	2
358782	99	32	24,4	cyclictest	0	-21	swapper/2	00:10:25	2
358782	99	32	23,6	cyclictest	383631	-21	unixbench_singl	21:30:28	2
358782	99	32	0,6	cyclictest	412619	-21	tr	00:20:28	2
358780	99	32	27,3	cyclictest	0	-21	swapper/1	23:30:25	1
358780	99	32	23,6	cyclictest	0	-21	swapper/1	19:40:01	1
358780	99	32	21,7	cyclictest	0	-21	swapper/1	19:10:28	1
358780	99	32	21,7	cyclictest	0	-21	swapper/1	19:10:28	1
358780	99	32	20,4	cyclictest	0	-21	swapper/1	19:40:11	1
358780	99	32	19,9	cyclictest	0	-21	swapper/1	00:30:16	1
358780	99	32	19,8	cyclictest	0	-21	swapper/1	23:45:22	1
358780	99	32	1,4	cyclictest	360323	-21	irqstats	19:15:22	1
358777	99	32	27,3	cyclictest	0	-21	swapper/0	21:22:16	0
358777	99	32	1,3	cyclictest	0	-21	swapper/0	19:10:00	0
358782	99	31	21,7	cyclictest	0	-21	swapper/2	19:55:27	2
358780	99	31	23,5	cyclictest	0	-21	swapper/1	23:00:28	1
358780	99	31	20,7	cyclictest	0	-21	swapper/1	21:20:01	1
358780	99	31	20,7	cyclictest	0	-21	swapper/1	21:20:01	1
358782	99	30	22,6	cyclictest	399816	-21	sshd	23:09:31	2
358782	99	30	21,6	cyclictest	0	-21	swapper/2	20:50:29	2
358782	99	30	21,6	cyclictest	0	-21	swapper/2	20:50:28	2
358780	99	30	18,8	cyclictest	0	-21	swapper/1	22:15:31	1
358782	99	29	20,6	cyclictest	0	-21	swapper/2	23:45:29	2
358782	99	29	17,9	cyclictest	0	-21	swapper/2	19:35:01	2
358782	99	29	17,6	cyclictest	0	-21	swapper/2	20:40:01	2
358780	99	29	19,7	cyclictest	0	-21	swapper/1	21:55:30	1
358780	99	29	19,7	cyclictest	0	-21	swapper/1	21:55:30	1
358780	99	29	16,7	cyclictest	23	1	ktimers/1	00:05:13	1
358782	99	28	12,5	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	21:11:26	2
358780	99	28	21,5	cyclictest	395312	-21	phc2sys-jitter	22:40:26	1
358780	99	27	8,16	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	21:24:15	1
358782	99	25	16,5	cyclictest	0	-21	swapper/2	23:40:27	2
358782	99	25	15,7	cyclictest	0	-21	swapper/2	00:40:00	2
358782	99	24	1,16	cyclictest	358828	-21	latency_hist	19:10:00	2
358780	99	18	4,9	cyclictest	358827	-21	latency_hist	19:10:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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