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 May 07, 2026 12:44:48)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
797534	99	83	11,53	cyclictest	24	-21	ksoftirqd/1	11:10:01	1
797534	99	80	65,8	cyclictest	807152	-21	sshd	08:05:00	1
797538	99	76	33,34	cyclictest	813280	-21	/usr/sbin/munin	08:40:19	3
797534	99	66	50,13	cyclictest	24	-21	ksoftirqd/1	11:55:19	1
797534	99	59	49,7	cyclictest	23	1	ktimers/1	09:40:15	1
797534	99	59	16,14	cyclictest	24	-21	ksoftirqd/1	09:50:01	1
797534	99	58	4,26	cyclictest	22	-21	rcuc/1	10:40:02	1
797533	99	58	48,6	cyclictest	0	-21	swapper/0	10:30:11	0
797533	99	57	51,4	cyclictest	15	-21	rcuc/0	10:45:01	0
797537	99	56	4,37	cyclictest	829293	-21	apt-get	10:15:01	2
797537	99	56	1,8	cyclictest	0	-21	swapper/2	08:20:01	2
797537	99	56	1,8	cyclictest	0	-21	swapper/2	08:20:01	2
797534	99	56	45,7	cyclictest	841216	-21	munin-plugin-st	11:25:00	1
797534	99	54	10,10	cyclictest	814760	-21	apt-get	08:50:01	1
797537	99	53	1,23	cyclictest	0	-21	swapper/2	07:45:01	2
797534	99	53	39,8	cyclictest	807918	-21	munin-plugin-st	08:10:00	1
797534	99	53	2,4	cyclictest	0	-21	swapper/1	11:45:03	1
797533	99	53	45,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	11:05:29	0
797537	99	52	11,12	cyclictest	14	-21	rcu_preempt	11:45:02	2
797533	99	52	3,5	cyclictest	822503	-21	head	09:30:28	0
797533	99	52	34,15	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	11:25:00	0
797533	99	52	34,15	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	09:55:17	0
797533	99	52	34,15	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	09:55:17	0
797533	99	51	46,4	cyclictest	0	-21	swapper/0	12:15:10	0
797533	99	51	3,44	cyclictest	0	-21	swapper/0	09:10:22	0
797533	99	50	3,14	cyclictest	802931	-21	sshd	07:40:01	0
797533	99	49	42,4	cyclictest	847327	-21	cmp	12:00:02	0
797533	99	49	41,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	09:45:25	0
797533	99	49	1,11	cyclictest	813437	-21	cut	08:40:20	0
797533	99	48	41,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	10:05:22	0
797533	99	48	39,5	cyclictest	208	50	irq/208-8000000.ethernet	12:10:21	0
797533	99	48	37,7	cyclictest	821647	-21	grep	09:25:28	0
797537	99	47	1,24	cyclictest	0	-21	swapper/2	11:05:01	2
797534	99	47	30,9	cyclictest	0	-21	swapper/1	09:30:27	1
797534	99	47	11,17	cyclictest	22	-21	rcuc/1	07:20:01	1
797534	99	47	11,17	cyclictest	22	-21	rcuc/1	07:20:01	1
797533	99	47	39,4	cyclictest	206	50	irq/252-8000000.ethernet	09:25:00	0
797533	99	46	35,7	cyclictest	0	-21	swapper/0	08:50:01	0
797533	99	46	2,6	cyclictest	799707	-21	cpu	07:20:16	0
797533	99	46	1,4	cyclictest	0	-21	swapper/0	08:35:01	0
797537	99	45	36,5	cyclictest	0	-21	swapper/2	12:30:00	2
797534	99	45	30,10	cyclictest	0	-21	swapper/1	09:50:29	1
797533	99	45	9,8	cyclictest	0	-21	swapper/0	08:30:01	0
797533	99	45	37,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	08:20:17	0
797533	99	45	37,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	08:20:17	0
797533	99	45	2,5	cyclictest	807335	-21	df	08:05:18	0
797533	99	45	1,42	cyclictest	826744	-21	kworker/u8:0+events_freezable_power_	10:10:12	0
797537	99	44	30,9	cyclictest	0	-21	swapper/2	08:00:27	2
797534	99	44	35,4	cyclictest	0	-21	swapper/1	08:00:00	1
797534	99	44	32,8	cyclictest	0	-21	swapper/1	11:40:01	1
797534	99	44	26,11	cyclictest	0	-21	swapper/1	10:55:30	1
797533	99	44	37,4	cyclictest	815693	-21	munin-plugin-st	08:55:00	0
797533	99	44	37,4	cyclictest	206	50	irq/252-8000000.ethernet	07:10:23	0
797533	99	44	2,39	cyclictest	0	-21	swapper/0	12:25:19	0
797537	99	43	34,5	cyclictest	817392	-21	munin-plugin-st	09:05:00	2
797534	99	43	20,12	cyclictest	0	-21	swapper/1	09:05:01	1
797533	99	43	36,4	cyclictest	0	-21	swapper/0	09:40:28	0
797533	99	43	35,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	10:20:17	0
797533	99	43	2,8	cyclictest	848085	-21	grep	12:00:28	0
797533	99	43	2,39	cyclictest	0	-21	swapper/0	11:30:12	0
797533	99	43	2,38	cyclictest	0	-21	swapper/0	09:00:28	0
797533	99	43	1,40	cyclictest	0	-21	swapper/0	10:25:30	0
797533	99	43	1,35	cyclictest	823481	-21	latency_hist	09:40:01	0
797537	99	42	28,9	cyclictest	0	-21	swapper/2	11:55:29	2
797537	99	42	26,8	cyclictest	0	-21	swapper/2	12:00:19	2
797534	99	42	29,8	cyclictest	0	-21	swapper/1	10:25:28	1
797534	99	42	10,11	cyclictest	0	-21	swapper/1	08:20:01	1
797533	99	42	34,4	cyclictest	825548	-21	kernelversion	09:50:25	0
797533	99	42	25,11	cyclictest	0	-21	swapper/0	09:15:26	0
797533	99	42	2,38	cyclictest	0	-21	swapper/0	10:45:18	0
797533	99	42	2,38	cyclictest	0	-21	swapper/0	10:45:18	0
797534	99	41	6,15	cyclictest	0	-21	swapper/1	12:30:02	1
797534	99	41	27,10	cyclictest	0	-21	swapper/1	09:05:30	1
797533	99	41	8,22	cyclictest	0	-21	swapper/0	08:00:01	0
797533	99	41	3,35	cyclictest	0	-21	swapper/0	11:37:05	0
797533	99	41	33,4	cyclictest	0	-21	swapper/0	10:15:18	0
797533	99	41	2,4	cyclictest	803355	-21	/usr/sbin/munin	07:40:24	0
797533	99	41	1,4	cyclictest	817655	-21	df_inode	09:05:19	0
797533	99	41	1,36	cyclictest	805576	-21	date	07:55:01	0
797537	99	40	25,9	cyclictest	0	-21	swapper/2	11:50:26	2
797537	99	40	1,32	cyclictest	1660	-21	snmpd	08:50:00	2
797537	99	40	10,19	cyclictest	30	-21	rcuc/2	09:30:01	2
797534	99	40	27,7	cyclictest	0	-21	swapper/1	12:10:27	1
797534	99	40	26,8	cyclictest	0	-21	swapper/1	11:25:27	1
797534	99	40	26,8	cyclictest	0	-21	swapper/1	11:25:27	1
797534	99	40	25,9	cyclictest	0	-21	swapper/1	07:25:28	1
797534	99	40	17,18	cyclictest	839716	-21	/usr/sbin/munin	11:15:18	1
797533	99	40	35,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	11:43:05	0
797533	99	40	31,5	cyclictest	0	-21	swapper/0	12:24:59	0
797533	99	40	23,15	cyclictest	0	-21	swapper/0	11:45:19	0
797533	99	40	1,4	cyclictest	0	-21	swapper/0	07:25:11	0
797533	99	40	1,37	cyclictest	0	-21	swapper/0	11:50:17	0
797537	99	39	31,6	cyclictest	0	-21	swapper/2	08:55:01	2
797537	99	39	30,6	cyclictest	0	-21	swapper/2	09:15:01	2
797537	99	39	28,6	cyclictest	0	-21	swapper/2	10:40:28	2
797537	99	39	1,27	cyclictest	0	-21	swapper/2	11:40:01	2
797534	99	39	33,4	cyclictest	23	1	ktimers/1	09:15:00	1
797534	99	39	25,9	cyclictest	0	-21	swapper/1	10:10:28	1
797533	99	39	34,3	cyclictest	13	1	ktimers/0	10:00:16	0
797533	99	39	30,4	cyclictest	809406	-21	ps	08:15:25	0
797533	99	39	1,36	cyclictest	0	-21	swapper/0	11:15:23	0
797537	99	38	29,5	cyclictest	0	-21	swapper/2	09:35:28	2
797537	99	38	28,5	cyclictest	0	-21	swapper/2	07:20:29	2
797537	99	38	27,5	cyclictest	0	-21	swapper/2	10:55:29	2
797534	99	38	25,9	cyclictest	0	-21	swapper/1	11:50:27	1
797534	99	38	25,9	cyclictest	0	-21	swapper/1	10:00:14	1
797534	99	38	24,8	cyclictest	0	-21	swapper/1	07:50:00	1
797534	99	38	24,8	cyclictest	0	-21	swapper/1	07:20:29	1
797534	99	38	23,8	cyclictest	0	-21	swapper/1	12:35:29	1
797534	99	38	23,8	cyclictest	0	-21	swapper/1	10:45:27	1
797534	99	38	23,8	cyclictest	0	-21	swapper/1	10:45:27	1
797534	99	38	23,12	cyclictest	0	-21	swapper/1	10:30:01	1
797534	99	38	1,2	cyclictest	0	-21	swapper/1	08:45:01	1
797533	99	38	7,9	cyclictest	0	-21	swapper/0	07:50:01	0
797533	99	38	31,4	cyclictest	208	50	irq/208-8000000.ethernet	12:05:24	0
797533	99	38	30,6	cyclictest	813057	-21	cron	08:40:00	0
797533	99	38	30,6	cyclictest	0	-21	swapper/0	10:55:16	0
797533	99	38	18,18	cyclictest	0	-21	swapper/0	07:15:06	0
797533	99	38	18,18	cyclictest	0	-21	swapper/0	07:15:06	0
797533	99	38	1,4	cyclictest	801566	-21	fw_packets	07:30:21	0
797533	99	38	1,4	cyclictest	801566	-21	fw_packets	07:30:21	0
797533	99	38	1,35	cyclictest	0	-21	swapper/0	11:10:28	0
797537	99	37	29,5	cyclictest	0	-21	swapper/2	10:50:28	2
797537	99	37	28,4	cyclictest	0	-21	swapper/2	09:15:01	2
797534	99	37	4,17	cyclictest	850023	-21	/usr/sbin/munin	12:15:17	1
797534	99	37	26,5	cyclictest	801960	-21	grep	07:30:27	1
797534	99	37	26,5	cyclictest	801960	-21	grep	07:30:27	1
797534	99	37	25,9	cyclictest	0	-21	swapper/1	11:00:27	1
797534	99	37	21,9	cyclictest	0	-21	swapper/1	07:10:27	1
797534	99	37	1,30	cyclictest	847501	-21	/usr/sbin/munin	12:00:16	1
797534	99	37	1,10	cyclictest	0	-21	swapper/1	08:40:01	1
797533	99	37	31,4	cyclictest	0	-21	swapper/0	08:00:13	0
797533	99	37	30,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	08:10:02	0
797533	99	37	21,12	cyclictest	238	50	irq/422-mmc1	10:35:12	0
797537	99	36	1,26	cyclictest	0	-21	swapper/2	11:25:01	2
797537	99	36	1,16	cyclictest	0	-21	swapper/2	09:25:00	2
797537	99	36	11,12	cyclictest	844877	-21	/usr/sbin/munin	11:45:17	2
797534	99	36	28,5	cyclictest	0	-21	swapper/1	11:34:59	1
797534	99	36	25,6	cyclictest	0	-21	swapper/1	10:35:28	1
797534	99	36	24,6	cyclictest	0	-21	swapper/1	08:10:28	1
797534	99	36	1,29	cyclictest	0	-21	swapper/1	07:50:23	1
797533	99	36	30,4	cyclictest	0	-21	swapper/0	11:25:22	0
797533	99	36	30,4	cyclictest	0	-21	swapper/0	11:25:22	0
797533	99	36	1,3	cyclictest	0	-21	swapper/0	11:00:19	0
797533	99	36	1,33	cyclictest	0	-21	swapper/0	10:50:11	0
797537	99	35	28,5	cyclictest	842004	-21	unixbench_singl	11:25:28	2
797537	99	35	28,5	cyclictest	842004	-21	unixbench_singl	11:25:27	2
797537	99	35	2,4	cyclictest	0	-21	swapper/2	12:40:01	2
797537	99	35	23,8	cyclictest	0	-21	swapper/2	08:15:01	2
797537	99	35	18,11	cyclictest	0	-21	swapper/2	07:55:01	2
797537	99	35	1,4	cyclictest	0	-21	swapper/2	10:20:01	2
797537	99	35	1,29	cyclictest	0	-21	swapper/2	12:10:01	2
797537	99	35	1,27	cyclictest	850883	-21	/usr/sbin/munin	12:20:23	2
797534	99	35	26,6	cyclictest	821662	-21	grep	09:25:28	1
797534	99	35	26,4	cyclictest	811315	-21	grep	08:25:28	1
797534	99	35	24,6	cyclictest	23	1	ktimers/1	10:15:19	1
797534	99	35	22,8	cyclictest	23	1	ktimers/1	10:05:25	1
797534	99	35	19,9	cyclictest	0	-21	swapper/1	08:20:28	1
797534	99	35	19,9	cyclictest	0	-21	swapper/1	08:20:28	1
797534	99	35	17,10	cyclictest	0	-21	swapper/1	11:50:00	1
797533	99	35	25,6	cyclictest	0	-21	swapper/0	12:30:20	0
797533	99	35	17,8	cyclictest	0	-21	swapper/0	12:35:30	0
797537	99	34	27,5	cyclictest	809692	-21	cut	08:20:00	2
797537	99	34	26,5	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	08:30:00	2
797537	99	34	25,7	cyclictest	0	-21	swapper/2	10:30:28	2
797537	99	34	25,6	cyclictest	842252	-21	/usr/sbin/munin	11:30:20	2
797537	99	34	25,4	cyclictest	0	-21	swapper/2	08:35:19	2
797537	99	34	24,7	cyclictest	816495	-21	grep	08:55:30	2
797537	99	34	22,9	cyclictest	0	-21	swapper/2	07:10:28	2
797537	99	34	1,8	cyclictest	0	-21	swapper/2	09:35:02	2
797534	99	34	24,6	cyclictest	826706	-21	grep	09:55:29	1
797534	99	34	24,6	cyclictest	826706	-21	grep	09:55:29	1
797534	99	34	1,27	cyclictest	811583	-21	/usr/sbin/munin	08:30:23	1
797534	99	34	1,27	cyclictest	0	-21	swapper/1	09:15:03	1
797533	99	34	3,4	cyclictest	816609	-21	cat	09:00:00	0
797537	99	33	27,3	cyclictest	801365	-21	sshd	07:30:10	2
797537	99	33	27,3	cyclictest	801365	-21	sshd	07:30:10	2
797537	99	33	24,7	cyclictest	0	-21	swapper/2	07:35:28	2
797537	99	33	1,3	cyclictest	0	-21	swapper/2	11:20:02	2
797534	99	33	24,6	cyclictest	23	1	ktimers/1	10:25:01	1
797534	99	33	24,6	cyclictest	23	1	ktimers/1	07:40:12	1
797534	99	33	21,7	cyclictest	23	1	ktimers/1	08:50:13	1
797537	99	32	24,5	cyclictest	0	-21	swapper/2	09:05:21	2
797537	99	32	23,7	cyclictest	826118	-21	/usr/sbin/munin	09:55:24	2
797537	99	32	23,7	cyclictest	826118	-21	/usr/sbin/munin	09:55:24	2
797537	99	32	23,6	cyclictest	0	-21	swapper/2	10:30:00	2
797537	99	32	1,4	cyclictest	0	-21	swapper/2	12:15:02	2
797534	99	32	25,4	cyclictest	23	1	ktimers/1	12:20:09	1
797534	99	32	21,7	cyclictest	0	-21	swapper/1	10:50:26	1
797534	99	32	1,18	cyclictest	0	-21	swapper/1	09:35:10	1
797537	99	31	24,4	cyclictest	827818	-21	/usr/sbin/munin	10:05:18	2
797537	99	31	23,5	cyclictest	803905	-21	dropbear	07:45:13	2
797537	99	31	23,4	cyclictest	0	-21	swapper/2	10:20:25	2
797537	99	31	22,6	cyclictest	852561	-21	/usr/sbin/munin	12:30:10	2
797537	99	31	21,7	cyclictest	827547	-21	grep	10:00:27	2
797534	99	31	25,4	cyclictest	23	1	ktimers/1	08:55:19	1
797534	99	31	20,7	cyclictest	0	-21	swapper/1	12:05:29	1
797534	99	31	11,14	cyclictest	802714	-21	/usr/sbin/munin	07:35:29	1
797537	99	30	22,5	cyclictest	0	-21	swapper/2	10:35:28	2
797537	99	30	22,5	cyclictest	0	-21	swapper/2	07:25:28	2
797537	99	30	19,7	cyclictest	0	-21	swapper/2	11:05:21	2
797537	99	30	13,14	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	12:10:24	2
797534	99	30	22,6	cyclictest	23	1	ktimers/1	12:30:25	1
797537	99	29	22,4	cyclictest	31	1	ktimers/2	08:40:24	2
797537	99	29	19,6	cyclictest	0	-21	swapper/2	09:45:28	2
797537	99	29	19,5	cyclictest	0	-21	swapper/2	08:30:25	2
797537	99	29	18,7	cyclictest	0	-21	swapper/2	11:10:27	2
797537	99	29	1,2	cyclictest	0	-21	swapper/2	09:45:01	2
797534	99	29	20,4	cyclictest	23	1	ktimers/1	11:05:24	1
797537	99	28	1,3	cyclictest	0	-21	swapper/2	08:10:01	2
797533	99	28	3,5	cyclictest	797494	-21	latency_hist	07:10:01	0
797537	99	27	16,9	cyclictest	31	1	ktimers/2	07:15:15	2
797537	99	27	16,9	cyclictest	31	1	ktimers/2	07:15:15	2
797537	99	27	16,7	cyclictest	0	-21	swapper/2	07:10:01	2
797537	99	27	10,15	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	07:55:20	2
797537	99	26	11,13	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	10:48:15	2
797537	99	26	11,13	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	10:48:14	2
797537	99	25	15,7	cyclictest	0	-21	swapper/2	09:50:27	2
797534	99	25	17,6	cyclictest	0	-21	swapper/1	09:20:18	1
797534	99	21	7,4	cyclictest	24	-21	ksoftirqd/1	07:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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