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 Thu Nov 20, 2025 00:44:53)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
192035	99	106	1,67	cyclictest	0	-21	swapper/1	19:50:00	1
192033	99	82	3,52	cyclictest	0	-21	swapper/0	20:50:01	0
192035	99	76	66,6	cyclictest	22	-21	rcuc/1	21:35:02	1
192037	99	73	65,5	cyclictest	0	-21	swapper/2	22:35:01	2
192037	99	73	65,5	cyclictest	0	-21	swapper/2	22:35:01	2
192037	99	64	52,8	cyclictest	240823	-21	sh	00:25:00	2
192037	99	59	2,28	cyclictest	30	-21	rcuc/2	23:40:16	2
192035	99	56	17,33	cyclictest	0	-21	swapper/1	20:25:27	1
192035	99	56	17,33	cyclictest	0	-21	swapper/1	20:25:27	1
192037	99	55	45,6	cyclictest	203958	-21	munin-plugin-st	20:50:00	2
192037	99	53	13,20	cyclictest	30	-21	rcuc/2	00:05:02	2
192037	99	52	38,9	cyclictest	202262	-21	sendmail	20:40:00	2
192037	99	51	37,9	cyclictest	1287	-21	cron	23:10:00	2
192035	99	51	42,5	cyclictest	215309	-21	apt-key	21:55:01	1
192035	99	50	1,33	cyclictest	236793	-21	fschecks_count	00:00:19	1
192033	99	50	42,4	cyclictest	210005	-21	unixbench_singl	21:20:27	0
192033	99	50	16,31	cyclictest	0	-21	swapper/0	20:10:29	0
192033	99	50	16,31	cyclictest	0	-21	swapper/0	20:10:29	0
192035	99	49	34,11	cyclictest	0	-21	swapper/1	00:00:01	1
192033	99	49	43,4	cyclictest	0	-21	swapper/0	23:35:11	0
192035	99	48	7,32	cyclictest	0	-21	swapper/1	00:15:24	1
192035	99	48	7,32	cyclictest	0	-21	swapper/1	00:15:24	1
192035	99	48	33,11	cyclictest	198886	-21	munin-plugin-st	20:20:00	1
192033	99	48	1,4	cyclictest	0	-21	swapper/0	21:50:20	0
192035	99	47	8,4	cyclictest	192447	-21	meminfo	19:15:02	1
192033	99	47	34,8	cyclictest	0	-21	swapper/0	21:45:25	0
192033	99	47	13,3	cyclictest	0	-21	swapper/0	00:00:01	0
192037	99	46	40,4	cyclictest	31	1	ktimers/2	22:45:01	2
192037	99	46	37,5	cyclictest	239966	-21	munin-plugin-st	00:20:00	2
192037	99	46	37,5	cyclictest	239966	-21	munin-plugin-st	00:20:00	2
192035	99	46	36,5	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	23:35:25	1
192035	99	46	32,9	cyclictest	0	-21	swapper/1	00:25:26	1
192037	99	45	31,11	cyclictest	0	-21	swapper/2	22:50:00	2
192037	99	45	31,11	cyclictest	0	-21	swapper/2	22:49:59	2
192035	99	45	25,11	cyclictest	0	-21	swapper/1	22:00:00	1
192037	99	44	24,13	cyclictest	31	1	ktimers/2	23:20:10	2
192035	99	44	30,8	cyclictest	203063	-21	grep	20:40:30	1
192037	99	43	31,8	cyclictest	0	-21	swapper/2	22:50:27	2
192035	99	43	32,7	cyclictest	230401	-21	grep	23:20:27	1
192035	99	43	24,10	cyclictest	0	-21	swapper/1	22:25:27	1
192033	99	43	8,27	cyclictest	15	-21	rcuc/0	19:15:02	0
192033	99	43	30,8	cyclictest	0	-21	swapper/0	21:25:32	0
192033	99	43	30,8	cyclictest	0	-21	swapper/0	19:35:01	0
192033	99	43	26,14	cyclictest	233259	-21	cpu	23:40:13	0
192037	99	42	33,5	cyclictest	1684	50	irq/134-8000000.ethernet-tx2	22:10:21	2
192037	99	42	31,9	cyclictest	31	1	ktimers/2	19:40:01	2
192035	99	42	33,6	cyclictest	0	-21	swapper/1	22:10:00	1
192033	99	42	35,4	cyclictest	243349	-21	latency_hist	00:40:00	0
192033	99	42	34,5	cyclictest	212	50	irq/208-8000000.ethernet	23:30:28	0
192033	99	42	34,5	cyclictest	212	50	irq/208-8000000.ethernet	23:30:28	0
192033	99	42	34,4	cyclictest	212	50	irq/208-8000000.ethernet	00:15:27	0
192033	99	42	34,4	cyclictest	212	50	irq/208-8000000.ethernet	00:15:27	0
192033	99	42	28,10	cyclictest	0	-21	swapper/0	21:40:26	0
192033	99	42	1,8	cyclictest	0	-21	swapper/0	23:30:01	0
192033	99	42	1,6	cyclictest	205664	-21	sed	20:55:26	0
192037	99	41	32,5	cyclictest	210005	-21	unixbench_singl	21:20:27	2
192037	99	41	21,14	cyclictest	31	1	ktimers/2	22:55:17	2
192035	99	41	24,9	cyclictest	0	-21	swapper/1	20:00:36	1
192033	99	41	29,8	cyclictest	0	-21	swapper/0	22:15:29	0
192033	99	41	29,8	cyclictest	0	-21	swapper/0	22:15:29	0
192033	99	41	28,9	cyclictest	0	-21	swapper/0	23:05:28	0
192033	99	41	27,9	cyclictest	0	-21	swapper/0	00:05:29	0
192037	99	40	3,5	cyclictest	275	-21	systemd-journal	22:25:26	2
192037	99	40	30,7	cyclictest	232064	-21	grep	23:30:29	2
192037	99	40	30,7	cyclictest	232064	-21	grep	23:30:28	2
192037	99	40	29,7	cyclictest	232929	-21	grep	23:35:26	2
192037	99	40	28,8	cyclictest	0	-21	swapper/2	23:15:20	2
192037	99	40	28,8	cyclictest	0	-21	swapper/2	23:15:20	2
192037	99	40	1,9	cyclictest	0	-21	swapper/2	20:55:01	2
192037	99	40	1,28	cyclictest	197185	-21	kworker/u8:1+events_power_efficient	21:11:20	2
192035	99	40	6,15	cyclictest	22	-21	rcuc/1	21:15:01	1
192035	99	40	31,5	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	20:50:24	1
192035	99	40	30,5	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	23:15:18	1
192035	99	40	30,5	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	23:15:18	1
192035	99	40	28,8	cyclictest	0	-21	swapper/1	21:15:27	1
192035	99	40	23,8	cyclictest	0	-21	swapper/1	23:45:31	1
192035	99	40	23,8	cyclictest	0	-21	swapper/1	23:45:30	1
192033	99	40	18,19	cyclictest	192208	-21	latency_hist	19:15:01	0
192033	99	40	1,34	cyclictest	0	-21	swapper/0	21:20:02	0
192033	99	40	1,2	cyclictest	0	-21	swapper/0	20:40:00	0
192037	99	39	35,2	cyclictest	0	-21	swapper/2	21:05:19	2
192037	99	39	30,4	cyclictest	0	-21	swapper/2	19:56:44	2
192037	99	39	23,12	cyclictest	31	1	ktimers/2	00:10:15	2
192035	99	39	32,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	23:50:15	1
192035	99	39	26,8	cyclictest	0	-21	swapper/1	22:15:28	1
192035	99	39	26,8	cyclictest	0	-21	swapper/1	22:15:28	1
192035	99	39	23,8	cyclictest	0	-21	swapper/1	21:05:29	1
192033	99	39	32,4	cyclictest	212	50	irq/208-8000000.ethernet	22:55:21	0
192033	99	39	31,5	cyclictest	200463	-21	grep	20:25:29	0
192033	99	39	31,5	cyclictest	200463	-21	grep	20:25:29	0
192033	99	39	30,6	cyclictest	0	-21	swapper/0	21:05:15	0
192033	99	39	25,9	cyclictest	0	-21	swapper/0	22:05:21	0
192033	99	39	1,7	cyclictest	0	-21	swapper/0	22:50:01	0
192033	99	39	1,7	cyclictest	0	-21	swapper/0	22:50:01	0
192033	99	39	1,4	cyclictest	0	-21	swapper/0	20:05:21	0
192037	99	38	27,8	cyclictest	0	-21	swapper/2	20:44:27	2
192035	99	38	31,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	23:40:22	1
192035	99	38	31,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	20:35:29	1
192035	99	38	30,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	20:20:26	1
192035	99	38	27,7	cyclictest	0	-21	swapper/1	20:55:25	1
192035	99	38	27,6	cyclictest	0	-21	swapper/1	21:20:26	1
192035	99	38	25,9	cyclictest	0	-21	swapper/1	00:05:27	1
192035	99	38	2,4	cyclictest	0	-21	swapper/1	19:15:02	1
192033	99	38	32,4	cyclictest	1682	50	irq/118-8000000.ethernet-tx0	20:30:21	0
192033	99	38	29,6	cyclictest	13	1	ktimers/0	20:15:29	0
192033	99	38	28,7	cyclictest	0	-21	swapper/0	21:30:20	0
192033	99	38	26,9	cyclictest	0	-21	swapper/0	21:10:30	0
192033	99	38	26,8	cyclictest	0	-21	swapper/0	20:45:27	0
192033	99	38	26,8	cyclictest	0	-21	swapper/0	00:00:28	0
192033	99	38	26,7	cyclictest	0	-21	swapper/0	23:00:29	0
192033	99	38	26,7	cyclictest	0	-21	swapper/0	23:00:29	0
192033	99	38	25,8	cyclictest	0	-21	swapper/0	21:00:29	0
192033	99	38	25,8	cyclictest	0	-21	swapper/0	20:40:29	0
192033	99	38	24,9	cyclictest	0	-21	swapper/0	22:20:28	0
192037	99	37	30,3	cyclictest	209015	-21	unixbench_multi	21:15:26	2
192037	99	37	29,5	cyclictest	212618	-21	unixbench_singl	21:35:28	2
192037	99	37	26,6	cyclictest	206479	-21	unixbench_multi	21:00:29	2
192037	99	37	24,7	cyclictest	0	-21	swapper/2	21:35:01	2
192037	99	37	20,9	cyclictest	0	-21	swapper/2	20:15:00	2
192037	99	37	20,9	cyclictest	0	-21	swapper/2	20:15:00	2
192035	99	37	30,4	cyclictest	222898	-21	sendmail	22:40:00	1
192035	99	37	29,5	cyclictest	23	1	ktimers/1	00:40:00	1
192035	99	37	28,5	cyclictest	0	-21	swapper/1	23:05:00	1
192035	99	37	28,5	cyclictest	0	-21	swapper/1	23:04:59	1
192035	99	37	23,9	cyclictest	0	-21	swapper/1	22:00:22	1
192035	99	37	23,9	cyclictest	0	-21	swapper/1	22:00:22	1
192035	99	37	1,29	cyclictest	0	-21	swapper/1	23:05:24	1
192033	99	37	24,8	cyclictest	0	-21	swapper/0	22:00:31	0
192033	99	37	24,8	cyclictest	0	-21	swapper/0	22:00:31	0
192033	99	37	24,10	cyclictest	13	1	ktimers/0	22:40:19	0
192033	99	37	23,9	cyclictest	0	-21	swapper/0	22:30:29	0
192033	99	37	23,9	cyclictest	0	-21	swapper/0	22:30:28	0
192033	99	37	23,9	cyclictest	0	-21	swapper/0	19:56:39	0
192033	99	37	22,9	cyclictest	0	-21	swapper/0	23:15:28	0
192033	99	37	22,9	cyclictest	0	-21	swapper/0	23:15:28	0
192037	99	36	3,5	cyclictest	193375	-21	apt-get	19:35:00	2
192037	99	36	23,9	cyclictest	0	-21	swapper/2	20:00:24	2
192037	99	36	22,7	cyclictest	0	-21	swapper/2	21:40:27	2
192037	99	36	21,7	cyclictest	199633	-21	grep	20:20:30	2
192037	99	36	1,27	cyclictest	275	-21	systemd-journal	22:05:23	2
192035	99	36	29,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	00:10:22	1
192035	99	36	28,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	22:55:27	1
192035	99	36	20,9	cyclictest	0	-21	swapper/1	23:10:28	1
192035	99	36	20,8	cyclictest	0	-21	swapper/1	00:20:28	1
192033	99	36	2,8	cyclictest	241030	-21	apt-get	00:25:12	0
192033	99	36	26,7	cyclictest	0	-21	swapper/0	23:20:27	0
192033	99	36	26,7	cyclictest	0	-21	swapper/0	22:29:59	0
192033	99	36	26,6	cyclictest	0	-21	swapper/0	00:20:28	0
192033	99	36	24,8	cyclictest	0	-21	swapper/0	22:50:28	0
192033	99	36	1,3	cyclictest	0	-21	swapper/0	00:10:16	0
192033	99	36	1,28	cyclictest	13	1	ktimers/0	19:50:08	0
192037	99	35	27,4	cyclictest	219507	-21	latency_hist	22:20:00	2
192037	99	35	27,4	cyclictest	219507	-21	latency_hist	22:20:00	2
192037	99	35	27,4	cyclictest	0	-21	swapper/2	21:45:26	2
192037	99	35	23,8	cyclictest	0	-21	swapper/2	21:55:29	2
192037	99	35	22,6	cyclictest	0	-21	swapper/2	20:15:29	2
192037	99	35	17,8	cyclictest	0	-21	swapper/2	23:55:19	2
192035	99	35	28,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	23:30:27	1
192035	99	35	28,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	23:30:27	1
192035	99	35	28,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	19:58:20	1
192035	99	35	19,8	cyclictest	0	-21	swapper/1	21:35:01	1
192033	99	35	27,4	cyclictest	200	50	irq/27-20000000.i2c	00:30:31	0
192033	99	35	27,4	cyclictest	200	50	irq/27-20000000.i2c	00:30:31	0
192033	99	35	1,7	cyclictest	218751	-21	latency_hist	22:15:01	0
192037	99	34	24,5	cyclictest	0	-21	swapper/2	20:30:24	2
192037	99	34	21,6	cyclictest	0	-21	swapper/2	23:05:00	2
192037	99	34	21,6	cyclictest	0	-21	swapper/2	23:05:00	2
192037	99	34	18,6	cyclictest	0	-21	swapper/2	22:00:30	2
192037	99	34	18,6	cyclictest	0	-21	swapper/2	22:00:29	2
192035	99	34	25,5	cyclictest	0	-21	swapper/1	20:05:30	1
192035	99	34	24,7	cyclictest	23	1	ktimers/1	20:10:16	1
192035	99	34	24,7	cyclictest	23	1	ktimers/1	20:10:16	1
192035	99	34	22,8	cyclictest	0	-21	swapper/1	20:50:01	1
192033	99	34	27,4	cyclictest	212	50	irq/208-8000000.ethernet	23:10:15	0
192033	99	34	23,7	cyclictest	0	-21	swapper/0	22:35:28	0
192033	99	34	23,6	cyclictest	0	-21	swapper/0	23:45:33	0
192033	99	34	23,6	cyclictest	0	-21	swapper/0	23:45:33	0
192033	99	34	22,8	cyclictest	0	-21	swapper/0	21:35:28	0
192033	99	34	21,8	cyclictest	0	-21	swapper/0	20:20:31	0
192037	99	33	22,6	cyclictest	0	-21	swapper/2	23:15:01	2
192037	99	33	21,6	cyclictest	0	-21	swapper/2	23:30:01	2
192037	99	33	1,3	cyclictest	0	-21	swapper/2	19:25:00	2
192037	99	33	13,13	cyclictest	31	1	ktimers/2	21:50:15	2
192035	99	33	20,7	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	23:25:20	1
192035	99	33	1,26	cyclictest	0	-21	swapper/1	22:40:30	1
192035	99	33	1,26	cyclictest	0	-21	swapper/1	21:00:16	1
192037	99	32	5,21	cyclictest	30	-21	rcuc/2	19:25:46	2
192037	99	32	23,6	cyclictest	205082	-21	/usr/sbin/munin	20:55:15	2
192037	99	32	2,25	cyclictest	0	-21	swapper/2	19:45:46	2
192037	99	32	20,7	cyclictest	1668	-21	snmpd	23:51:25	2
192037	99	32	20,6	cyclictest	0	-21	swapper/2	00:25:21	2
192035	99	32	25,4	cyclictest	1683	50	irq/126-8000000.ethernet-tx1	20:30:15	1
192035	99	32	21,7	cyclictest	0	-21	swapper/1	21:25:30	1
192035	99	32	1,2	cyclictest	0	-21	swapper/1	22:15:01	1
192033	99	32	27,4	cyclictest	0	-21	swapper/0	19:40:01	0
192033	99	32	1,28	cyclictest	15	-21	rcuc/0	21:55:26	0
192037	99	31	2,7	cyclictest	30	-21	rcuc/2	19:10:01	2
192037	99	31	23,4	cyclictest	0	-21	swapper/2	22:20:28	2
192037	99	31	1,27	cyclictest	242707	-21	/usr/sbin/munin	00:35:25	2
192035	99	31	22,6	cyclictest	214341	-21	sshd	21:47:20	1
192035	99	31	17,8	cyclictest	0	-21	swapper/1	22:50:27	1
192035	99	31	1,24	cyclictest	0	-21	swapper/1	22:45:25	1
192035	99	31	1,24	cyclictest	0	-21	swapper/1	22:45:25	1
192033	99	31	1,25	cyclictest	234916	-21	apt	23:50:14	0
192037	99	30	20,7	cyclictest	0	-21	swapper/2	00:35:01	2
192037	99	30	20,7	cyclictest	0	-21	swapper/2	00:35:01	2
192037	99	30	1,24	cyclictest	31	1	ktimers/2	22:36:50	2
192035	99	30	22,4	cyclictest	0	-21	swapper/1	19:51:59	1
192035	99	30	1,24	cyclictest	0	-21	swapper/1	19:25:10	1
192035	99	30	1,24	cyclictest	0	-21	swapper/1	19:20:02	1
192033	99	30	1,2	cyclictest	0	-21	swapper/0	19:30:02	0
192033	99	30	1,24	cyclictest	0	-21	swapper/0	20:00:02	0
192037	99	29	21,5	cyclictest	0	-21	swapper/2	19:15:01	2
192035	99	29	20,5	cyclictest	0	-21	swapper/1	19:35:00	1
192035	99	29	18,7	cyclictest	0	-21	swapper/1	22:20:28	1
192035	99	29	17,7	cyclictest	1668	-21	snmpd	21:41:20	1
192033	99	29	1,4	cyclictest	192947	-21	munin-run	19:25:01	0
192037	99	28	24,2	cyclictest	0	-21	swapper/2	23:45:27	2
192037	99	28	24,2	cyclictest	0	-21	swapper/2	23:45:27	2
192037	99	28	19,5	cyclictest	30	-21	rcuc/2	19:20:00	2
192037	99	28	1,25	cyclictest	0	-21	swapper/2	00:05:21	2
192035	99	28	23,3	cyclictest	0	-21	swapper/1	00:30:19	1
192035	99	28	23,3	cyclictest	0	-21	swapper/1	00:30:19	1
192035	99	28	1,4	cyclictest	0	-21	swapper/1	22:35:01	1
192035	99	28	1,4	cyclictest	0	-21	swapper/1	22:35:01	1
192033	99	28	22,4	cyclictest	212	50	irq/208-8000000.ethernet	19:49:59	0
192037	99	27	16,9	cyclictest	0	-21	swapper/2	20:30:01	2
192037	99	27	16,9	cyclictest	0	-21	swapper/2	20:30:01	2
192035	99	27	20,5	cyclictest	845	-21	systemd-logind	19:43:51	1
192035	99	27	20,5	cyclictest	845	-21	systemd-logind	19:43:51	1
192033	99	27	1,24	cyclictest	0	-21	swapper/0	19:41:33	0
192033	99	27	1,24	cyclictest	0	-21	swapper/0	19:41:33	0
192037	99	26	3,17	cyclictest	196893	-21	phc2sys	20:05:27	2
192037	99	26	20,4	cyclictest	0	-21	swapper/2	21:28:24	2
192037	99	25	19,4	cyclictest	14	-21	rcu_preempt	19:45:01	2
192037	99	25	19,4	cyclictest	14	-21	rcu_preempt	19:45:01	2
192037	99	25	11,11	cyclictest	31	1	ktimers/2	19:50:12	2
192035	99	25	18,5	cyclictest	275	-21	systemd-journal	19:36:51	1
192033	99	25	2,6	cyclictest	191994	-21	latency_hist	19:10:00	0
192035	99	21	16,3	cyclictest	191994	-21	latency_hist	19:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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