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 Sun Jul 19, 2026 00:44:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1909145	99	72	64,4	cyclictest	0	-21	swapper/0	20:05:12	0
1909145	99	72	64,4	cyclictest	0	-21	swapper/0	20:05:12	0
1909145	99	65	1,55	cyclictest	0	-21	swapper/0	20:25:11	0
1909150	99	55	45,5	cyclictest	1963129	-21	munin-plugin-st	00:25:00	2
1909145	99	55	22,31	cyclictest	1912863	-21	munin-plugin-st	19:30:01	0
1909145	99	55	22,31	cyclictest	1912863	-21	munin-plugin-st	19:30:01	0
1909145	99	54	36,13	cyclictest	0	-21	swapper/0	19:15:01	0
1909150	99	53	3,25	cyclictest	32	-21	ksoftirqd/2	00:00:02	2
1909150	99	52	6,15	cyclictest	32	-21	ksoftirqd/2	22:45:02	2
1909147	99	52	43,5	cyclictest	1944365	-21	munin-plugin-st	22:35:00	1
1909147	99	51	40,7	cyclictest	1936616	-21	grep	21:45:32	1
1909150	99	50	5,9	cyclictest	30	-21	rcuc/2	20:50:01	2
1909145	99	50	2,5	cyclictest	1947517	-21	tail	22:50:28	0
1909145	99	50	2,5	cyclictest	1947517	-21	tail	22:50:28	0
1909145	99	49	13,33	cyclictest	0	-21	swapper/0	21:59:59	0
1909150	99	48	42,4	cyclictest	31	1	ktimers/2	21:05:01	2
1909145	99	48	41,5	cyclictest	1923834	-21	munin-run	20:35:00	0
1909145	99	48	38,8	cyclictest	1912025	-21	munin-plugin-st	19:25:00	0
1909150	99	47	35,8	cyclictest	1922104	-21	grep	20:20:30	2
1909145	99	47	37,7	cyclictest	1948580	-21	munin-plugin-st	23:00:00	0
1909150	99	46	33,8	cyclictest	0	-21	swapper/2	19:50:00	2
1909150	99	46	32,6	cyclictest	1942644	-21	unixbench_singl	22:20:31	2
1909150	99	46	27,10	cyclictest	0	-21	swapper/2	21:30:29	2
1909150	99	46	23,14	cyclictest	31	1	ktimers/2	23:25:13	2
1909147	99	46	33,9	cyclictest	0	-21	swapper/1	21:10:01	1
1909145	99	46	38,6	cyclictest	1946063	-21	munin-plugin-st	22:45:01	0
1909145	99	46	33,9	cyclictest	0	-21	swapper/0	20:55:01	0
1909145	99	46	1,4	cyclictest	0	-21	swapper/0	23:05:01	0
1909145	99	46	10,23	cyclictest	208	50	irq/208-8000000.ethernet	22:20:01	0
1909150	99	45	7,25	cyclictest	1962216	-21	grep	00:15:28	2
1909150	99	45	39,3	cyclictest	1930769	-21	munin-plugin-st	21:15:00	2
1909150	99	45	33,9	cyclictest	1283	-21	cron	20:15:00	2
1909150	99	45	33,8	cyclictest	0	-21	swapper/2	19:15:01	2
1909150	99	45	24,16	cyclictest	0	-21	swapper/2	23:35:24	2
1909147	99	45	34,6	cyclictest	1933219	-21	grep	21:25:30	1
1909145	99	45	39,4	cyclictest	1957414	-21	kworker/u8:2+events_power_efficient	23:55:12	0
1909145	99	45	32,10	cyclictest	0	-21	swapper/0	23:35:31	0
1909145	99	45	1,15	cyclictest	0	-21	swapper/0	20:05:01	0
1909150	99	44	30,9	cyclictest	0	-21	swapper/2	00:30:19	2
1909150	99	44	28,7	cyclictest	0	-21	swapper/2	22:05:25	2
1909150	99	44	13,24	cyclictest	32	-21	ksoftirqd/2	00:25:20	2
1909147	99	44	35,5	cyclictest	0	-21	swapper/1	19:15:01	1
1909147	99	44	27,9	cyclictest	0	-21	swapper/1	19:15:07	1
1909145	99	44	35,7	cyclictest	1925626	-21	munin-plugin-st	20:45:00	0
1909145	99	44	32,9	cyclictest	0	-21	swapper/0	22:05:01	0
1909150	99	43	30,7	cyclictest	1948475	-21	grep	22:55:29	2
1909150	99	43	29,7	cyclictest	0	-21	swapper/2	20:00:00	2
1909147	99	43	3,10	cyclictest	0	-21	swapper/1	20:55:01	1
1909147	99	43	28,8	cyclictest	0	-21	swapper/1	00:05:20	1
1909147	99	43	1,35	cyclictest	0	-21	swapper/1	20:10:31	1
1909145	99	43	36,4	cyclictest	206	50	irq/252-8000000.ethernet	00:35:17	0
1909145	99	43	34,6	cyclictest	0	-21	swapper/0	21:40:27	0
1909145	99	43	33,7	cyclictest	0	-21	swapper/0	21:45:32	0
1909145	99	43	32,8	cyclictest	0	-21	swapper/0	23:30:30	0
1909145	99	43	30,9	cyclictest	0	-21	swapper/0	20:40:01	0
1909150	99	42	33,6	cyclictest	1928128	-21	grep	20:55:28	2
1909150	99	42	32,6	cyclictest	1960507	-21	grep	00:05:29	2
1909150	99	42	29,6	cyclictest	0	-21	swapper/2	19:35:19	2
1909150	99	42	28,9	cyclictest	0	-21	swapper/2	22:30:29	2
1909150	99	42	28,8	cyclictest	0	-21	swapper/2	21:15:32	2
1909150	99	42	28,8	cyclictest	0	-21	swapper/2	21:15:32	2
1909150	99	42	24,12	cyclictest	0	-21	swapper/2	21:20:20	2
1909145	99	42	35,5	cyclictest	1934997	-21	munin-plugin-st	21:40:00	0
1909145	99	42	31,8	cyclictest	0	-21	swapper/0	00:25:29	0
1909145	99	42	31,7	cyclictest	0	-21	swapper/0	19:39:59	0
1909145	99	42	28,9	cyclictest	0	-21	swapper/0	00:15:01	0
1909145	99	42	25,13	cyclictest	0	-21	swapper/0	00:00:30	0
1909145	99	42	1,8	cyclictest	0	-21	swapper/0	23:10:01	0
1909150	99	41	35,4	cyclictest	31	1	ktimers/2	23:30:20	2
1909150	99	41	30,6	cyclictest	0	-21	swapper/2	22:50:29	2
1909150	99	41	30,6	cyclictest	0	-21	swapper/2	22:50:29	2
1909150	99	41	26,8	cyclictest	0	-21	swapper/2	21:50:02	2
1909150	99	41	15,16	cyclictest	31	1	ktimers/2	00:35:15	2
1909147	99	41	29,8	cyclictest	0	-21	swapper/1	20:55:28	1
1909147	99	41	27,9	cyclictest	0	-21	swapper/1	22:45:21	1
1909145	99	41	28,9	cyclictest	0	-21	swapper/0	21:00:29	0
1909145	99	41	28,8	cyclictest	0	-21	swapper/0	20:10:32	0
1909145	99	41	2,36	cyclictest	0	-21	swapper/0	19:50:19	0
1909150	99	40	27,7	cyclictest	0	-21	swapper/2	19:40:28	2
1909150	99	40	26,6	cyclictest	0	-21	swapper/2	23:10:19	2
1909150	99	40	25,6	cyclictest	0	-21	swapper/2	20:40:28	2
1909150	99	40	24,11	cyclictest	0	-21	swapper/2	20:00:29	2
1909150	99	40	18,14	cyclictest	30	-21	rcuc/2	23:15:21	2
1909150	99	40	18,14	cyclictest	30	-21	rcuc/2	23:15:21	2
1909147	99	40	31,5	cyclictest	0	-21	swapper/1	22:35:29	1
1909147	99	40	29,8	cyclictest	0	-21	swapper/1	22:50:29	1
1909147	99	40	29,8	cyclictest	0	-21	swapper/1	22:50:29	1
1909147	99	40	27,9	cyclictest	0	-21	swapper/1	21:30:29	1
1909145	99	40	29,8	cyclictest	0	-21	swapper/0	23:45:29	0
1909145	99	40	28,8	cyclictest	0	-21	swapper/0	21:20:29	0
1909150	99	39	29,6	cyclictest	1949690	-21	ssh	23:05:17	2
1909150	99	39	29,6	cyclictest	1939245	-21	unixbench_singl	22:00:29	2
1909150	99	39	28,6	cyclictest	0	-21	swapper/2	20:50:22	2
1909150	99	39	22,10	cyclictest	1913586	-21	grep	19:30:30	2
1909147	99	39	31,4	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	20:00:29	1
1909147	99	39	28,8	cyclictest	0	-21	swapper/1	20:25:01	1
1909147	99	39	26,9	cyclictest	0	-21	swapper/1	23:10:01	1
1909147	99	39	23,9	cyclictest	0	-21	swapper/1	22:00:26	1
1909145	99	39	32,4	cyclictest	208	50	irq/208-8000000.ethernet	23:40:21	0
1909145	99	39	29,7	cyclictest	0	-21	swapper/0	22:05:28	0
1909145	99	39	28,7	cyclictest	0	-21	swapper/0	20:20:28	0
1909145	99	39	1,4	cyclictest	1936682	-21	apt-get	21:50:03	0
1909145	99	39	1,4	cyclictest	0	-21	swapper/0	19:55:25	0
1909145	99	39	1,3	cyclictest	1915664	-21	df_inode	19:45:19	0
1909145	99	39	1,3	cyclictest	0	-21	swapper/0	22:50:01	0
1909145	99	39	1,3	cyclictest	0	-21	swapper/0	20:15:15	0
1909145	99	39	1,36	cyclictest	0	-21	swapper/0	21:15:01	0
1909145	99	39	1,36	cyclictest	0	-21	swapper/0	21:15:01	0
1909150	99	38	29,4	cyclictest	0	-21	swapper/2	21:35:29	2
1909150	99	38	28,6	cyclictest	0	-21	swapper/2	23:00:31	2
1909150	99	38	27,6	cyclictest	1919507	-21	grep	20:05:29	2
1909150	99	38	27,6	cyclictest	1919507	-21	grep	20:05:29	2
1909150	99	38	26,6	cyclictest	0	-21	swapper/2	19:10:01	2
1909150	99	38	24,8	cyclictest	1911081	-21	grep	19:15:29	2
1909150	99	38	24,11	cyclictest	31	1	ktimers/2	23:45:13	2
1909150	99	38	23,10	cyclictest	0	-21	swapper/2	20:35:01	2
1909150	99	38	20,10	cyclictest	0	-21	swapper/2	22:45:27	2
1909150	99	38	19,10	cyclictest	0	-21	swapper/2	23:40:26	2
1909147	99	38	31,4	cyclictest	1952809	-21	apt-get	23:25:00	1
1909147	99	38	30,4	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	20:40:30	1
1909147	99	38	30,4	cyclictest	0	-21	swapper/1	23:35:20	1
1909147	99	38	28,6	cyclictest	0	-21	swapper/1	19:20:26	1
1909147	99	38	22,10	cyclictest	1953744	-21	munin-plugin-st	23:30:00	1
1909147	99	38	14,17	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	23:30:24	1
1909145	99	38	30,4	cyclictest	208	50	irq/208-8000000.ethernet	21:00:00	0
1909145	99	38	27,7	cyclictest	0	-21	swapper/0	23:10:28	0
1909145	99	38	25,9	cyclictest	0	-21	swapper/0	22:35:28	0
1909145	99	38	2,3	cyclictest	0	-21	swapper/0	23:30:01	0
1909145	99	38	1,12	cyclictest	0	-21	swapper/0	00:35:01	0
1909150	99	37	5,22	cyclictest	1929892	-21	grep	21:05:30	2
1909150	99	37	31,4	cyclictest	31	1	ktimers/2	21:50:12	2
1909150	99	37	25,6	cyclictest	0	-21	swapper/2	19:20:23	2
1909150	99	37	24,9	cyclictest	0	-21	swapper/2	20:15:28	2
1909147	99	37	3,5	cyclictest	1935785	-21	unixbench_singl	21:40:26	1
1909147	99	37	26,8	cyclictest	0	-21	swapper/1	23:45:29	1
1909147	99	37	24,6	cyclictest	1948481	-21	grep	22:55:29	1
1909145	99	37	29,6	cyclictest	0	-21	swapper/0	21:25:30	0
1909145	99	37	26,8	cyclictest	0	-21	swapper/0	19:40:27	0
1909145	99	37	26,7	cyclictest	0	-21	swapper/0	00:05:29	0
1909145	99	37	2,5	cyclictest	1910438	-21	fschecks_count	19:15:06	0
1909145	99	37	1,2	cyclictest	0	-21	swapper/0	21:15:00	0
1909150	99	36	24,7	cyclictest	0	-21	swapper/2	23:20:30	2
1909150	99	36	23,7	cyclictest	0	-21	swapper/2	19:50:31	2
1909150	99	36	22,8	cyclictest	0	-21	swapper/2	20:40:01	2
1909150	99	36	21,11	cyclictest	31	1	ktimers/2	21:25:12	2
1909150	99	36	19,10	cyclictest	0	-21	swapper/2	22:10:27	2
1909150	99	36	19,10	cyclictest	0	-21	swapper/2	22:10:26	2
1909147	99	36	28,5	cyclictest	0	-21	swapper/1	23:15:00	1
1909147	99	36	27,7	cyclictest	0	-21	swapper/1	20:20:00	1
1909147	99	36	27,5	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	00:25:29	1
1909147	99	36	20,9	cyclictest	0	-21	swapper/1	22:40:28	1
1909147	99	36	14,13	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	22:12:02	1
1909147	99	36	14,13	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	22:12:02	1
1909145	99	36	28,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	22:10:23	0
1909145	99	36	28,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	22:10:23	0
1909145	99	36	26,6	cyclictest	0	-21	swapper/0	23:20:30	0
1909145	99	36	25,7	cyclictest	0	-21	swapper/0	00:15:28	0
1909145	99	36	1,5	cyclictest	0	-21	swapper/0	21:05:01	0
1909145	99	36	1,3	cyclictest	0	-21	swapper/0	20:45:18	0
1909150	99	35	23,8	cyclictest	1935364	-21	sh	21:40:18	2
1909150	99	35	20,8	cyclictest	0	-21	swapper/2	20:25:27	2
1909147	99	35	2,26	cyclictest	0	-21	swapper/1	20:35:14	1
1909145	99	35	29,4	cyclictest	208	50	irq/208-8000000.ethernet	22:30:29	0
1909145	99	35	28,4	cyclictest	0	-21	swapper/0	22:20:16	0
1909145	99	35	26,7	cyclictest	0	-21	swapper/0	23:20:00	0
1909145	99	35	26,7	cyclictest	0	-21	swapper/0	23:19:59	0
1909145	99	35	26,6	cyclictest	0	-21	swapper/0	21:30:29	0
1909145	99	35	1,30	cyclictest	13	1	ktimers/0	19:30:30	0
1909150	99	34	7,19	cyclictest	1945090	-21	sed	22:35:28	2
1909150	99	34	22,7	cyclictest	1959659	-21	grep	00:00:30	2
1909147	99	34	27,4	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	21:55:29	1
1909147	99	34	22,8	cyclictest	0	-21	swapper/1	00:35:28	1
1909147	99	34	21,9	cyclictest	0	-21	swapper/1	20:30:28	1
1909147	99	34	17,10	cyclictest	0	-21	swapper/1	23:55:22	1
1909145	99	34	20,9	cyclictest	0	-21	swapper/0	22:25:29	0
1909145	99	34	1,31	cyclictest	0	-21	swapper/0	23:52:31	0
1909150	99	33	25,5	cyclictest	1960787	-21	/usr/sbin/munin	00:10:25	2
1909150	99	33	21,10	cyclictest	31	1	ktimers/2	19:25:14	2
1909150	99	33	21,10	cyclictest	31	1	ktimers/2	19:25:14	2
1909150	99	33	19,9	cyclictest	0	-21	swapper/2	23:50:30	2
1909150	99	33	1,2	cyclictest	0	-21	swapper/2	22:00:01	2
1909147	99	33	26,4	cyclictest	1961366	-21	grep	00:10:30	1
1909147	99	33	2,3	cyclictest	0	-21	swapper/1	00:30:28	1
1909147	99	33	22,6	cyclictest	1958041	-21	sshd	23:54:24	1
1909147	99	33	1,5	cyclictest	1914186	-21	kernelversion	19:35:24	1
1909147	99	33	1,3	cyclictest	1962491	-21	apt-get	00:20:15	1
1909147	99	33	12,15	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	19:25:24	1
1909147	99	33	12,15	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	19:25:24	1
1909147	99	32	6,20	cyclictest	1930967	-21	/usr/sbin/munin	21:15:22	1
1909147	99	32	6,20	cyclictest	1930967	-21	/usr/sbin/munin	21:15:22	1
1909147	99	32	27,2	cyclictest	0	-21	swapper/1	19:45:21	1
1909147	99	32	25,5	cyclictest	1922994	-21	munin-plugin-st	20:30:00	1
1909147	99	32	25,4	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	00:15:24	1
1909147	99	32	25,4	cyclictest	0	-21	swapper/1	21:00:26	1
1909147	99	32	24,5	cyclictest	0	-21	swapper/1	23:40:27	1
1909147	99	32	24,5	cyclictest	0	-21	swapper/1	23:15:30	1
1909147	99	32	24,5	cyclictest	0	-21	swapper/1	23:15:30	1
1909147	99	32	23,6	cyclictest	1940095	-21	grep	22:05:28	1
1909147	99	32	16,11	cyclictest	0	-21	swapper/1	19:30:29	1
1909147	99	32	1,25	cyclictest	1949326	-21	unixbench_multi	23:00:31	1
1909145	99	32	21,7	cyclictest	0	-21	swapper/0	00:20:30	0
1909150	99	31	5,17	cyclictest	1941774	-21	grep	22:15:27	2
1909147	99	31	25,4	cyclictest	0	-21	swapper/1	19:40:28	1
1909147	99	31	25,3	cyclictest	0	-21	swapper/1	20:05:24	1
1909147	99	31	25,3	cyclictest	0	-21	swapper/1	20:05:23	1
1909147	99	31	24,4	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	21:10:28	1
1909147	99	31	1,28	cyclictest	0	-21	swapper/1	21:35:26	1
1909150	99	30	16,10	cyclictest	1943419	-21	grep	22:25:29	2
1909147	99	30	21,5	cyclictest	0	-21	swapper/1	19:50:20	1
1909147	99	30	20,7	cyclictest	0	-21	swapper/1	22:25:28	1
1909147	99	29	22,4	cyclictest	0	-21	swapper/1	21:55:00	1
1909147	99	29	18,7	cyclictest	22	-21	rcuc/1	21:20:15	1
1909147	99	29	18,7	cyclictest	0	-21	swapper/1	19:55:16	1
1909147	99	29	13,13	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	00:03:45	1
1909147	99	28	9,4	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	22:17:57	1
1909145	99	28	1,3	cyclictest	0	-21	swapper/0	19:10:01	0
1909147	99	27	18,6	cyclictest	0	-21	swapper/1	20:45:18	1
1909147	99	27	13,10	cyclictest	0	-21	swapper/1	22:20:20	1
1909147	99	21	12,6	cyclictest	0	-21	swapper/1	19:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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