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 Mon Aug 03, 2026 12:44:49)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3007643	99	78	39,27	cyclictest	31	1	ktimers/2	09:20:02	2
3007643	99	67	13,19	cyclictest	0	-21	swapper/2	11:55:05	2
3007643	99	67	13,19	cyclictest	0	-21	swapper/2	11:55:05	2
3007641	99	62	1,31	cyclictest	0	-21	swapper/1	07:55:01	1
3007639	99	59	48,5	cyclictest	206	50	irq/252-8000000.ethernet	07:40:18	0
3007639	99	58	48,5	cyclictest	0	-21	swapper/0	08:35:12	0
3007639	99	58	48,5	cyclictest	0	-21	swapper/0	08:35:12	0
3007641	99	57	3,29	cyclictest	0	-21	swapper/1	10:20:01	1
3007643	99	56	48,5	cyclictest	3042115	-21	munin-plugin-st	10:29:59	2
3007641	99	55	1,27	cyclictest	0	-21	swapper/1	11:20:01	1
3007639	99	55	37,15	cyclictest	13	1	ktimers/0	10:55:01	0
3007643	99	52	44,4	cyclictest	3060172	-21	unixbench_multi	12:10:29	2
3007643	99	52	16,15	cyclictest	3026854	-21	/usr/sbin/munin	09:00:20	2
3007641	99	51	1,32	cyclictest	0	-21	swapper/1	08:30:01	1
3007639	99	51	44,4	cyclictest	3057743	-21	sendmail	12:00:00	0
3007639	99	51	44,4	cyclictest	3057743	-21	sendmail	11:59:59	0
3007639	99	51	43,4	cyclictest	206	50	irq/252-8000000.ethernet	11:45:21	0
3007639	99	51	43,4	cyclictest	206	50	irq/252-8000000.ethernet	09:20:01	0
3007641	99	50	1,28	cyclictest	0	-21	swapper/1	07:45:00	1
3007639	99	50	42,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	11:35:24	0
3007643	99	49	38,8	cyclictest	3040336	-21	sendmail	10:20:00	2
3007643	99	49	36,8	cyclictest	0	-21	swapper/2	10:45:01	2
3007643	99	49	35,9	cyclictest	0	-21	swapper/2	12:20:00	2
3007641	99	49	1,29	cyclictest	0	-21	swapper/1	09:40:02	1
3007639	99	49	41,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	07:55:29	0
3007639	99	49	41,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	07:55:28	0
3007641	99	48	1,31	cyclictest	0	-21	swapper/1	07:35:02	1
3007639	99	48	41,4	cyclictest	206	50	irq/252-8000000.ethernet	09:40:01	0
3007639	99	48	28,15	cyclictest	14	-21	rcu_preempt	08:35:00	0
3007643	99	47	37,7	cyclictest	3046512	-21	munin-plugin-st	10:55:00	2
3007641	99	47	1,29	cyclictest	0	-21	swapper/1	10:35:00	1
3007639	99	47	40,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	10:20:21	0
3007639	99	47	40,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	09:10:28	0
3007639	99	47	39,5	cyclictest	3014831	-21	munin-plugin-st	07:50:00	0
3007639	99	47	34,7	cyclictest	0	-21	swapper/0	07:25:02	0
3007641	99	46	33,8	cyclictest	0	-21	swapper/1	09:30:00	1
3007639	99	46	39,4	cyclictest	3013136	-21	munin-plugin-st	07:40:00	0
3007639	99	46	39,4	cyclictest	206	50	irq/252-8000000.ethernet	12:20:01	0
3007639	99	46	38,4	cyclictest	206	50	irq/252-8000000.ethernet	12:00:30	0
3007643	99	45	34,7	cyclictest	3008447	-21	munin-plugin-st	07:15:00	2
3007641	99	45	33,8	cyclictest	0	-21	swapper/1	07:15:01	1
3007641	99	45	1,24	cyclictest	0	-21	swapper/1	12:40:01	1
3007639	99	45	38,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	12:20:26	0
3007639	99	45	2,6	cyclictest	3024930	-21	users	08:45:31	0
3007643	99	44	9,13	cyclictest	3028498	-21	gpg-connect-age	09:10:02	2
3007643	99	44	36,4	cyclictest	3026644	-21	sendmail	08:59:59	2
3007643	99	44	33,8	cyclictest	3034433	-21	munin-plugin-st	09:44:59	2
3007643	99	44	29,9	cyclictest	0	-21	swapper/2	08:30:02	2
3007639	99	44	37,5	cyclictest	14	-21	rcu_preempt	09:45:16	0
3007639	99	44	37,4	cyclictest	206	50	irq/252-8000000.ethernet	10:35:25	0
3007639	99	44	36,5	cyclictest	0	-21	swapper/0	07:15:05	0
3007639	99	44	35,5	cyclictest	208	50	irq/208-8000000.ethernet	10:25:26	0
3007639	99	44	35,5	cyclictest	206	50	irq/252-8000000.ethernet	11:55:01	0
3007639	99	44	35,5	cyclictest	206	50	irq/252-8000000.ethernet	11:55:01	0
3007639	99	44	35,5	cyclictest	0	-21	swapper/0	11:25:29	0
3007639	99	44	26,16	cyclictest	0	-21	swapper/0	09:25:25	0
3007639	99	44	24,16	cyclictest	3025454	-21	/usr/sbin/munin	08:50:23	0
3007643	99	43	33,7	cyclictest	3033576	-21	munin-plugin-st	09:40:00	2
3007639	99	43	36,4	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	09:05:25	0
3007639	99	43	27,14	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	08:25:20	0
3007639	99	43	22,18	cyclictest	0	-21	swapper/0	10:15:20	0
3007641	99	42	34,4	cyclictest	3055088	-21	grep	11:40:30	1
3007641	99	42	34,4	cyclictest	3055088	-21	grep	11:40:30	1
3007641	99	42	28,9	cyclictest	0	-21	swapper/1	12:00:27	1
3007641	99	42	1,21	cyclictest	0	-21	swapper/1	11:30:01	1
3007639	99	42	36,4	cyclictest	206	50	irq/252-8000000.ethernet	11:15:28	0
3007639	99	42	35,4	cyclictest	0	-21	swapper/0	10:30:04	0
3007639	99	42	28,10	cyclictest	0	-21	swapper/0	09:40:22	0
3007639	99	42	2,38	cyclictest	0	-21	swapper/0	09:55:18	0
3007639	99	42	1,37	cyclictest	0	-21	swapper/0	10:10:00	0
3007639	99	42	1,36	cyclictest	3030510	-21	cut	09:20:17	0
3007643	99	41	28,7	cyclictest	0	-21	swapper/2	10:55:30	2
3007641	99	41	25,9	cyclictest	0	-21	swapper/1	07:20:01	1
3007641	99	41	24,11	cyclictest	0	-21	swapper/1	08:35:19	1
3007641	99	41	24,11	cyclictest	0	-21	swapper/1	08:35:19	1
3007639	99	41	35,4	cyclictest	0	-21	swapper/0	11:40:23	0
3007639	99	41	35,4	cyclictest	0	-21	swapper/0	11:40:23	0
3007639	99	41	1,4	cyclictest	3049470	-21	fschecks_time	11:10:21	0
3007639	99	41	1,4	cyclictest	3049470	-21	fschecks_time	11:10:21	0
3007639	99	41	1,38	cyclictest	0	-21	swapper/0	12:10:29	0
3007639	99	41	1,38	cyclictest	0	-21	swapper/0	10:40:12	0
3007639	99	41	1,38	cyclictest	0	-21	swapper/0	07:25:14	0
3007643	99	40	32,5	cyclictest	3009663	-21	cat	07:20:01	2
3007643	99	40	31,6	cyclictest	3051657	-21	grep	11:20:28	2
3007643	99	40	25,8	cyclictest	0	-21	swapper/2	08:05:28	2
3007641	99	40	8,19	cyclictest	3045868	-21	/usr/sbin/munin	10:50:19	1
3007641	99	40	31,5	cyclictest	3048240	-21	grep	11:00:30	1
3007641	99	40	31,5	cyclictest	0	-21	swapper/1	09:15:28	1
3007641	99	40	26,9	cyclictest	0	-21	swapper/1	10:05:20	1
3007641	99	40	24,11	cyclictest	0	-21	swapper/1	10:00:00	1
3007641	99	40	1,2	cyclictest	0	-21	swapper/1	09:45:00	1
3007639	99	40	34,4	cyclictest	0	-21	swapper/0	08:55:16	0
3007639	99	40	34,4	cyclictest	0	-21	swapper/0	08:20:11	0
3007639	99	40	33,4	cyclictest	206	50	irq/252-8000000.ethernet	11:20:17	0
3007639	99	40	28,8	cyclictest	0	-21	swapper/0	08:00:32	0
3007639	99	40	1,6	cyclictest	3015537	-21	threads	07:50:29	0
3007643	99	39	29,5	cyclictest	0	-21	swapper/2	08:30:29	2
3007643	99	39	26,8	cyclictest	0	-21	swapper/2	07:25:01	2
3007643	99	39	22,8	cyclictest	0	-21	swapper/2	08:40:28	2
3007641	99	39	26,9	cyclictest	0	-21	swapper/1	08:40:29	1
3007641	99	39	1,26	cyclictest	0	-21	swapper/1	07:40:00	1
3007641	99	39	12,17	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	08:10:26	1
3007639	99	39	4,11	cyclictest	14	-21	rcu_preempt	09:50:02	0
3007639	99	39	32,4	cyclictest	206	50	irq/252-8000000.ethernet	10:45:13	0
3007639	99	39	32,4	cyclictest	206	50	irq/252-8000000.ethernet	10:45:12	0
3007639	99	39	1,7	cyclictest	0	-21	swapper/0	07:35:02	0
3007639	99	39	1,3	cyclictest	0	-21	swapper/0	11:35:02	0
3007639	99	39	1,36	cyclictest	0	-21	swapper/0	11:05:14	0
3007639	99	39	1,36	cyclictest	0	-21	swapper/0	08:05:28	0
3007639	99	39	0,37	cyclictest	200	-21	pr/ttyS2	10:05:01	0
3007643	99	38	29,4	cyclictest	0	-21	swapper/2	08:45:30	2
3007643	99	38	28,7	cyclictest	0	-21	swapper/2	09:55:30	2
3007643	99	38	27,7	cyclictest	0	-21	swapper/2	11:15:00	2
3007643	99	38	27,7	cyclictest	0	-21	swapper/2	11:15:00	2
3007643	99	38	25,8	cyclictest	0	-21	swapper/2	10:10:29	2
3007643	99	38	25,8	cyclictest	0	-21	swapper/2	10:10:29	2
3007643	99	38	25,10	cyclictest	0	-21	swapper/2	08:50:27	2
3007641	99	38	30,5	cyclictest	3037724	-21	grep	10:00:28	1
3007641	99	38	28,5	cyclictest	0	-21	swapper/1	08:55:28	1
3007641	99	38	27,7	cyclictest	23	1	ktimers/1	09:30:13	1
3007641	99	38	21,11	cyclictest	0	-21	swapper/1	08:25:00	1
3007639	99	38	34,2	cyclictest	0	-21	swapper/0	08:10:19	0
3007639	99	38	32,3	cyclictest	1673	50	irq/118-8000000.ethernet-tx0	12:35:20	0
3007639	99	38	30,5	cyclictest	3020734	-21	kworker/u8:1-events_power_efficient	08:40:21	0
3007639	99	38	25,10	cyclictest	0	-21	swapper/0	07:10:28	0
3007639	99	38	21,15	cyclictest	0	-21	swapper/0	10:10:25	0
3007639	99	38	21,15	cyclictest	0	-21	swapper/0	10:10:24	0
3007639	99	38	1,35	cyclictest	0	-21	swapper/0	10:55:02	0
3007643	99	37	30,3	cyclictest	3015586	-21	unixbench_multi	07:50:30	2
3007643	99	37	28,5	cyclictest	0	-21	swapper/2	10:20:21	2
3007643	99	37	27,4	cyclictest	0	-21	swapper/2	11:50:26	2
3007643	99	37	27,4	cyclictest	0	-21	swapper/2	11:50:26	2
3007643	99	37	26,7	cyclictest	0	-21	swapper/2	12:30:29	2
3007643	99	37	26,7	cyclictest	0	-21	swapper/2	10:05:28	2
3007643	99	37	24,8	cyclictest	0	-21	swapper/2	07:35:00	2
3007643	99	37	23,11	cyclictest	31	1	ktimers/2	08:20:13	2
3007643	99	37	21,10	cyclictest	0	-21	swapper/2	07:40:26	2
3007641	99	37	26,7	cyclictest	0	-21	swapper/1	08:19:59	1
3007641	99	37	13,15	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	10:35:13	1
3007639	99	37	30,3	cyclictest	0	-21	swapper/0	09:00:28	0
3007639	99	37	20,15	cyclictest	0	-21	swapper/0	12:25:15	0
3007639	99	37	1,4	cyclictest	0	-21	swapper/0	09:30:14	0
3007639	99	37	1,34	cyclictest	3047707	-21	grep	11:00:18	0
3007639	99	37	1,34	cyclictest	0	-21	swapper/0	12:05:18	0
3007643	99	36	29,4	cyclictest	1675	50	irq/134-8000000.ethernet-tx2	09:10:27	2
3007643	99	36	1,2	cyclictest	0	-21	swapper/2	12:20:18	2
3007641	99	36	29,4	cyclictest	1674	50	irq/126-8000000.ethernet-tx1	10:55:04	1
3007641	99	36	27,6	cyclictest	23	1	ktimers/1	09:40:14	1
3007641	99	36	27,5	cyclictest	14	-21	rcu_preempt	10:25:27	1
3007641	99	36	24,6	cyclictest	3044684	-21	grep	10:40:30	1
3007641	99	36	1,28	cyclictest	3051121	-21	/usr/sbin/munin	11:20:26	1
3007643	99	35	28,5	cyclictest	3011453	-21	munin-plugin-st	07:29:59	2
3007643	99	35	25,6	cyclictest	0	-21	swapper/2	10:00:27	2
3007643	99	35	24,6	cyclictest	0	-21	swapper/2	11:25:29	2
3007643	99	35	21,9	cyclictest	0	-21	swapper/2	09:30:29	2
3007643	99	35	20,9	cyclictest	0	-21	swapper/2	08:35:26	2
3007643	99	35	20,9	cyclictest	0	-21	swapper/2	08:35:26	2
3007643	99	35	1,28	cyclictest	3031253	-21	/usr/sbin/munin	09:25:23	2
3007641	99	35	27,5	cyclictest	0	-21	swapper/1	09:20:28	1
3007641	99	35	24,7	cyclictest	3059336	-21	grep	12:05:28	1
3007641	99	35	24,7	cyclictest	0	-21	swapper/1	11:15:01	1
3007641	99	35	24,7	cyclictest	0	-21	swapper/1	11:15:00	1
3007643	99	34	24,7	cyclictest	0	-21	swapper/2	11:40:00	2
3007643	99	34	21,9	cyclictest	0	-21	swapper/2	11:45:28	2
3007641	99	34	23,7	cyclictest	0	-21	swapper/1	08:05:01	1
3007641	99	34	22,8	cyclictest	0	-21	swapper/1	12:20:25	1
3007639	99	34	1,4	cyclictest	3063750	-21	cat	12:35:01	0
3007639	99	34	1,31	cyclictest	0	-21	swapper/0	08:17:00	0
3007643	99	33	25,3	cyclictest	0	-21	swapper/2	11:00:28	2
3007643	99	33	20,8	cyclictest	0	-21	swapper/2	08:15:00	2
3007643	99	33	1,30	cyclictest	0	-21	swapper/2	09:50:26	2
3007641	99	33	25,4	cyclictest	14	-21	rcu_preempt	09:10:22	1
3007641	99	33	23,5	cyclictest	0	-21	swapper/1	11:30:25	1
3007641	99	33	23,4	cyclictest	0	-21	swapper/1	12:15:30	1
3007641	99	33	19,8	cyclictest	0	-21	swapper/1	07:25:30	1
3007643	99	32	18,9	cyclictest	0	-21	swapper/2	08:00:31	2
3007641	99	32	25,4	cyclictest	0	-21	swapper/1	11:45:26	1
3007641	99	32	23,4	cyclictest	0	-21	swapper/1	08:10:01	1
3007641	99	32	20,8	cyclictest	0	-21	swapper/1	10:20:27	1
3007643	99	31	26,3	cyclictest	3014521	-21	phc2sys	07:45:27	2
3007641	99	31	24,3	cyclictest	0	-21	swapper/1	12:25:29	1
3007641	99	31	24,3	cyclictest	0	-21	swapper/1	10:10:22	1
3007641	99	31	24,3	cyclictest	0	-21	swapper/1	10:10:22	1
3007641	99	31	22,7	cyclictest	3027694	-21	/usr/sbin/munin	09:05:29	1
3007641	99	31	22,6	cyclictest	3035594	-21	cut	09:50:19	1
3007641	99	31	22,4	cyclictest	3025775	-21	kworker/u8:1-ext4-rsv-conversion	08:55:02	1
3007641	99	31	21,7	cyclictest	3027443	-21	grep	09:00:29	1
3007641	99	31	21,7	cyclictest	0	-21	swapper/1	07:45:28	1
3007641	99	31	20,8	cyclictest	0	-21	swapper/1	07:55:22	1
3007641	99	31	20,8	cyclictest	0	-21	swapper/1	07:55:22	1
3007641	99	31	1,24	cyclictest	0	-21	swapper/1	12:10:24	1
3007639	99	31	22,6	cyclictest	3007707	-21	cat	07:10:00	0
3007643	99	30	2,26	cyclictest	0	-21	swapper/2	12:35:28	2
3007643	99	30	22,3	cyclictest	0	-21	swapper/2	07:55:23	2
3007643	99	30	22,3	cyclictest	0	-21	swapper/2	07:55:23	2
3007641	99	30	3,24	cyclictest	832	-21	systemd-network	07:24:33	1
3007641	99	30	23,4	cyclictest	3048279	-21	kworker/u8:0-events_power_efficient	11:10:00	1
3007641	99	30	17,9	cyclictest	0	-21	swapper/1	08:45:29	1
3007643	99	29	21,5	cyclictest	0	-21	swapper/2	08:15:27	2
3007643	99	29	20,7	cyclictest	1660	-21	snmpd	11:18:24	2
3007643	99	29	19,7	cyclictest	0	-21	swapper/2	11:40:29	2
3007643	99	29	19,7	cyclictest	0	-21	swapper/2	11:40:29	2
3007643	99	29	17,9	cyclictest	0	-21	swapper/2	10:30:29	2
3007643	99	29	17,9	cyclictest	0	-21	swapper/2	07:35:29	2
3007641	99	29	23,4	cyclictest	0	-21	swapper/1	11:50:21	1
3007641	99	29	23,4	cyclictest	0	-21	swapper/1	11:50:20	1
3007641	99	29	22,5	cyclictest	22	-21	rcuc/1	12:30:19	1
3007641	99	29	19,7	cyclictest	0	-21	swapper/1	11:55:28	1
3007641	99	29	19,7	cyclictest	0	-21	swapper/1	11:55:28	1
3007643	99	28	22,3	cyclictest	0	-21	swapper/2	10:40:00	2
3007643	99	28	20,6	cyclictest	3059416	-21	sshd	12:07:00	2
3007643	99	28	1,4	cyclictest	0	-21	swapper/2	10:50:01	2
3007643	99	28	1,4	cyclictest	0	-21	swapper/2	10:50:01	2
3007641	99	28	16,9	cyclictest	23	1	ktimers/1	10:45:05	1
3007641	99	28	16,9	cyclictest	23	1	ktimers/1	10:45:05	1
3007643	99	27	19,6	cyclictest	0	-21	swapper/2	09:20:19	2
3007643	99	27	18,5	cyclictest	0	-21	swapper/2	12:00:30	2
3007643	99	27	16,7	cyclictest	0	-21	swapper/2	11:30:27	2
3007643	99	26	18,6	cyclictest	3062878	-21	sshd	12:25:38	2
3007643	99	26	18,6	cyclictest	3048671	-21	cut	11:05:21	2
3007641	99	26	19,4	cyclictest	3048279	-21	kworker/u8:0-events_power_efficient	11:35:26	1
3007641	99	26	17,5	cyclictest	0	-21	swapper/1	07:10:01	1
3007643	99	25	1,4	cyclictest	0	-21	swapper/2	09:50:01	2
3007641	99	25	16,5	cyclictest	0	-21	swapper/1	08:30:20	1
3007643	99	19	14,3	cyclictest	3007601	-21	latency_hist	07:10:01	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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