OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Tue Dec 09, 2025 00:44:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2382523	2	346	0,3	sleep3	586	-21	kworker/3:2+events	23:56:01	3
2346202	2	221	0,2	sleep3	586	-21	kworker/3:2-events	23:16:16	3
2262113	2	75	0,2	sleep0	13	-21	ksoftirqd/0	21:51:13	0
2097366	99	63	59,3	cyclictest	2302847	-21	kworker/u8:1+events_unbound	22:41:18	0
2097366	99	60	53,3	cyclictest	2071367	-21	kworker/u8:0+events_unbound	19:46:14	0
2097366	99	57	53,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	19:11:24	0
2097366	99	55	44,8	cyclictest	2187548	-21	ntpq	20:36:14	0
2097366	99	55	44,8	cyclictest	2187548	-21	ntpq	20:36:14	0
2097366	99	54	46,3	cyclictest	2336878	-21	kworker/u8:0+events_unbound	23:51:22	0
2097369	99	53	43,7	cyclictest	2281914	-21	ntpq	22:11:15	1
2097366	99	53	44,7	cyclictest	2108244	-21	ntpq	19:16:15	0
2336108	2	52	0,3	chrt	0	-21	swapper/0	23:06:14	0
2097366	99	52	48,3	cyclictest	2411731	-21	kworker/u8:3+events_unbound	00:36:06	0
2097366	99	52	48,3	cyclictest	2371799	-21	kworker/u8:1+events_unbound	23:56:24	0
2097366	99	51	47,3	cyclictest	2071367	-21	kworker/u8:0+events_unbound	19:41:15	0
2097366	99	51	39,10	cyclictest	282	-21	systemd-journal	20:15:00	0
2097366	99	49	45,3	cyclictest	2258303	-21	kworker/u8:0+events_unbound	22:06:18	0
2097366	99	49	42,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	21:21:06	0
2097373	99	48	43,4	cyclictest	2397255	-21	gpgv	00:10:00	2
2097366	99	48	44,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	19:56:21	0
2097366	99	48	40,3	cyclictest	2071367	-21	kworker/u8:0+events_unbound	19:51:03	0
2097366	99	48	40,3	cyclictest	2045107	-21	kworker/u8:1+events_unbound	21:31:08	0
2263787	2	47	0,3	sleep0	0	-21	swapper/0	21:56:07	0
2097373	99	47	36,9	cyclictest	2217208	-21	ntpq	21:06:15	2
2097366	99	47	43,3	cyclictest	2347307	-21	kworker/u8:2+events_unbound	23:41:05	0
2097366	99	47	43,3	cyclictest	2183320	-21	kworker/u8:2+events_unbound	20:51:04	0
2097366	99	47	43,3	cyclictest	2071367	-21	kworker/u8:0+events_unbound	20:01:09	0
2097366	99	47	43,3	cyclictest	2045107	-21	kworker/u8:1+events_unbound	20:16:24	0
2097366	99	47	40,3	cyclictest	2282742	-21	kworker/u8:1+events_unbound	22:21:04	0
2097369	99	46	38,6	cyclictest	282	-21	systemd-journal	19:16:06	1
2097366	99	46	42,3	cyclictest	2336878	-21	kworker/u8:0+events_unbound	23:31:19	0
2097366	99	46	42,3	cyclictest	2071367	-21	kworker/u8:0+events_unbound	19:33:07	0
2097366	99	45	41,3	cyclictest	2371799	-21	kworker/u8:1+events_unbound	00:31:25	0
2097366	99	45	41,3	cyclictest	2183320	-21	kworker/u8:2+events_unbound	21:36:08	0
2097366	99	45	41,3	cyclictest	2071367	-21	kworker/u8:0+events_unbound	19:28:04	0
2097366	99	45	41,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	20:56:28	0
2097366	99	45	40,4	cyclictest	2045107	-21	kworker/u8:1+events_unbound	20:26:24	0
2097366	99	45	37,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	22:32:16	0
2097366	99	44	40,3	cyclictest	2411731	-21	kworker/u8:3+events_unbound	00:21:24	0
2097366	99	44	40,3	cyclictest	2347307	-21	kworker/u8:2+events_unbound	23:46:24	0
2097366	99	44	36,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	22:11:08	0
2097366	99	43	39,3	cyclictest	2302847	-21	kworker/u8:1+events_unbound	22:56:25	0
2097366	99	43	39,3	cyclictest	2183320	-21	kworker/u8:2+events_unbound	21:15:17	0
2097366	99	43	39,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	20:48:17	0
2097366	99	43	39,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	20:43:16	0
2097366	99	43	27,3	cyclictest	16	1	rcu_preempt	00:11:07	0
2097366	99	42	38,3	cyclictest	2336878	-21	kworker/u8:0+events_unbound	23:16:20	0
2097366	99	42	38,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	21:06:04	0
2097366	99	42	35,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	22:26:05	0
2097369	99	41	31,8	cyclictest	282	-21	systemd-journal	21:36:16	1
2097366	99	41	37,3	cyclictest	2387440	-21	kworker/u8:2+events_unbound	00:18:50	0
2097366	99	41	37,3	cyclictest	2387440	-21	kworker/u8:2+events_unbound	00:07:18	0
2097366	99	41	37,3	cyclictest	2268252	-21	kworker/u8:2+events_unbound	22:01:23	0
2097366	99	41	37,3	cyclictest	2045107	-21	kworker/u8:1+events_unbound	20:24:14	0
2097366	99	41	37,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	20:07:07	0
2097369	99	40	34,4	cyclictest	2407644	-21	apt-get	00:21:01	1
2097366	99	40	36,3	cyclictest	2411731	-21	kworker/u8:3+events_unbound	00:26:04	0
2097366	99	40	36,3	cyclictest	2347307	-21	kworker/u8:2+events_unbound	23:38:17	0
2097366	99	40	36,3	cyclictest	2302847	-21	kworker/u8:1+events_unbound	23:03:24	0
2097366	99	40	36,3	cyclictest	2268252	-21	kworker/u8:2+events_unbound	22:16:23	0
2097366	99	40	36,3	cyclictest	2071367	-21	kworker/u8:0+events_unbound	19:38:05	0
2097366	99	40	25,3	cyclictest	16	1	rcu_preempt	19:21:05	0
2097369	99	39	28,9	cyclictest	2293294	-21	diskstats	22:26:06	1
2097366	99	39	35,3	cyclictest	2347307	-21	kworker/u8:2+events_unbound	23:22:25	0
2097366	99	39	35,3	cyclictest	2268252	-21	kworker/u8:2+events_unbound	22:53:21	0
2097366	99	39	35,3	cyclictest	2183320	-21	kworker/u8:2+events_unbound	21:46:24	0
2097366	99	39	35,3	cyclictest	2183320	-21	kworker/u8:2+events_unbound	21:26:23	0
2097366	99	39	35,3	cyclictest	1746288	-21	kworker/u8:5+events_unbound	20:33:16	0
2187035	2	38	0,4	sleep3	586	-21	kworker/3:2+events	20:36:12	3
2187035	2	38	0,4	sleep3	586	-21	kworker/3:2+events	20:36:12	3
2097369	99	38	30,5	cyclictest	2386331	-21	ntpq	23:56:15	1
2097366	99	38	34,3	cyclictest	2381678	-21	kworker/u8:3+events_unbound	00:00:03	0
2097366	99	38	34,3	cyclictest	2183320	-21	kworker/u8:2+events_unbound	21:11:40	0
2097366	99	38	32,4	cyclictest	282	-21	systemd-journal	23:13:26	0
2097366	99	37	33,3	cyclictest	2302847	-21	kworker/u8:1+events_unbound	22:48:19	0
2097366	99	37	33,3	cyclictest	2183320	-21	kworker/u8:2+events_unbound	21:01:39	0
2097366	99	36	32,3	cyclictest	2347307	-21	kworker/u8:2+events_unbound	23:28:31	0
2097366	99	36	32,3	cyclictest	2302847	-21	kworker/u8:1+events_unbound	22:37:57	0
2097369	99	35	27,6	cyclictest	282	-21	systemd-journal	21:20:00	1
2097369	99	35	25,8	cyclictest	2197480	-21	ntpq	20:46:16	1
2097369	99	35	22,9	cyclictest	282	-21	systemd-journal	00:19:16	1
2097366	99	35	31,3	cyclictest	2045107	-21	kworker/u8:1+events_unbound	21:40:19	0
2097373	99	34	24,7	cyclictest	2387187	-21	awk	00:00:00	2
2097369	99	34	30,2	cyclictest	2367450	-21	tr	23:41:05	1
2097369	99	34	29,3	cyclictest	2159553	-21	irqrtprio	20:11:09	1
2097369	99	34	11,10	cyclictest	0	-21	swapper/1	20:26:17	1
2097147	2	34	4,10	sleep1	0	-21	swapper/1	19:09:27	1
2233563	2	33	0,2	sleep3	586	-21	kworker/3:2+events	21:26:04	3
2097373	99	32	23,7	cyclictest	282	-21	systemd-journal	21:55:01	2
2097369	99	32	8,6	cyclictest	587	-21	runrttasks	20:01:21	1
2097369	99	32	7,9	cyclictest	2302393	-21	runrttasks	22:32:20	1
2097369	99	32	28,2	cyclictest	0	-21	swapper/1	20:20:00	1
2097369	99	32	26,4	cyclictest	2397541	-21	wc	00:10:01	1
2097369	99	32	24,6	cyclictest	2341240	-21	ntpq	23:11:14	1
2097369	99	32	24,5	cyclictest	282	-21	systemd-journal	23:23:15	1
2097369	99	32	22,7	cyclictest	282	-21	systemd-journal	23:20:00	1
2097369	99	32	2,12	cyclictest	2390212	-21	kthreadcore	00:01:12	1
2097369	99	32	14,9	cyclictest	16	1	rcu_preempt	00:36:14	1
2097369	99	32	0,20	cyclictest	0	-21	swapper/1	21:41:21	1
2097373	99	31	8,11	cyclictest	0	-21	swapper/2	22:51:16	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17