OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #7, 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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack7slot4s.osadl.org (updated Wed Jul 01, 2026 00:45:21)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
9945	99	62	3,48	cyclictest	5535	-21	ssh	22:45:14	0
9945	99	59	3,44	cyclictest	11551	-21	ssh	00:00:13	0
9953	99	58	2,38	cyclictest	18422	-21	ssh	23:10:11	1
9945	99	56	34,9	cyclictest	12	-21	ksoftirqd/0	23:40:13	0
9953	99	54	6,37	cyclictest	14147	-21	ssh	21:20:14	1
9961	99	52	2,8	cyclictest	0	-21	swapper/2	19:10:13	2
9953	99	52	1,37	cyclictest	5525	-21	ssh	22:45:13	1
9961	99	51	1,4	cyclictest	0	-21	swapper/2	20:40:14	2
9961	99	51	1,45	cyclictest	0	-21	swapper/2	00:10:09	2
9961	99	51	1,45	cyclictest	0	-21	swapper/2	00:10:09	2
9961	99	49	1,6	cyclictest	25773	-21	apt-get	23:50:14	2
9961	99	49	1,6	cyclictest	25773	-21	apt-get	23:50:13	2
9961	99	49	1,2	cyclictest	0	-21	swapper/2	22:55:12	2
9953	99	49	4,39	cyclictest	10598	-21	ssh	00:20:15	1
9961	99	47	1,42	cyclictest	0	-21	swapper/2	21:20:13	2
9953	99	47	4,34	cyclictest	28892	-21	ssh	22:40:14	1
9969	99	43	5,23	cyclictest	359	66	irq/58-eth0	23:40:12	3
9961	99	43	2,6	cyclictest	29359	-21	apt-get	19:30:12	2
9961	99	42	3,35	cyclictest	273	46	irq/40-dwc2_hso	22:35:13	2
9961	99	42	1,4	cyclictest	0	-21	swapper/2	20:35:13	2
9961	99	42	1,4	cyclictest	0	-21	swapper/2	20:35:13	2
9953	99	42	18,7	cyclictest	21	-21	ksoftirqd/1	21:10:14	1
9953	99	42	18,7	cyclictest	21	-21	ksoftirqd/1	21:10:14	1
9961	99	41	3,5	cyclictest	273	46	irq/40-dwc2_hso	20:10:13	2
9961	99	41	1,3	cyclictest	0	-21	swapper/2	21:25:11	2
9945	99	41	4,29	cyclictest	23560	-21	ssh	22:55:11	0
9961	99	40	1,4	cyclictest	13054	-21	apt-get	23:25:14	2
9961	99	40	1,4	cyclictest	0	-21	swapper/2	23:55:11	2
9961	99	40	1,34	cyclictest	28877	-21	ssh	22:40:13	2
9953	99	40	33,5	cyclictest	0	-21	swapper/1	23:50:14	1
9953	99	40	33,5	cyclictest	0	-21	swapper/1	23:50:14	1
9953	99	40	1,33	cyclictest	5304	-21	ssh	00:35:16	1
9969	99	39	2,23	cyclictest	359	66	irq/58-eth0	22:40:14	3
9961	99	39	3,3	cyclictest	0	-21	swapper/2	21:30:22	2
9961	99	39	1,7	cyclictest	24974	-21	ssh	22:20:02	2
9961	99	39	1,6	cyclictest	0	-21	swapper/2	21:35:21	2
9953	99	39	21,13	cyclictest	21	-21	ksoftirqd/1	00:25:13	1
9969	99	38	3,19	cyclictest	0	-21	swapper/3	00:00:12	3
9961	99	38	2,33	cyclictest	0	-21	swapper/2	23:15:15	2
9961	99	38	2,33	cyclictest	0	-21	swapper/2	23:15:15	2
9961	99	38	2,19	cyclictest	31058	-21	ssh	23:35:11	2
9961	99	38	1,6	cyclictest	7804	-21	ssh	23:03:43	2
9961	99	38	1,5	cyclictest	5014	-21	grep	00:15:24	2
9961	99	38	1,4	cyclictest	0	-21	swapper/2	22:45:13	2
9961	99	38	1,33	cyclictest	0	-21	swapper/2	23:05:13	2
9969	99	37	6,19	cyclictest	359	66	irq/58-eth0	22:45:14	3
9961	99	37	1,8	cyclictest	32044	-21	kthreadcore	20:05:20	2
9961	99	37	1,8	cyclictest	17875	-21	kthreadcore	19:15:21	2
9961	99	37	1,6	cyclictest	21609	-21	/usr/sbin/munin	22:00:15	2
9961	99	37	1,6	cyclictest	21609	-21	/usr/sbin/munin	22:00:15	2
9961	99	37	1,3	cyclictest	0	-21	swapper/2	20:20:14	2
9961	99	37	1,33	cyclictest	3956	-21	acpi	23:20:12	2
9969	99	36	4,21	cyclictest	359	66	irq/58-eth0	21:25:11	3
9961	99	36	6,5	cyclictest	12191	-21	cut	00:20:24	2
9961	99	36	1,9	cyclictest	11900	-21	if_eth1	00:00:17	2
9961	99	36	1,7	cyclictest	23348	-21	ntp_states	00:25:28	2
9961	99	36	1,7	cyclictest	18593	-21	irqrtprio	21:40:18	2
9961	99	36	1,7	cyclictest	16423	-21	tail	19:50:18	2
9961	99	36	1,6	cyclictest	9325	-21	ps	20:50:17	2
9961	99	36	1,6	cyclictest	17385	-21	irqrtprio	23:45:20	2
9961	99	36	1,6	cyclictest	17385	-21	irqrtprio	23:45:20	2
9961	99	36	1,6	cyclictest	12350	-21	sh	23:40:30	2
9969	99	35	1,23	cyclictest	359	66	irq/58-eth0	21:15:13	3
9961	99	35	8,24	cyclictest	12647	-21	ssh	21:55:16	2
9961	99	35	1,8	cyclictest	9466	-21	unixbench_singl	00:35:32	2
9961	99	35	1,8	cyclictest	23525	-21	timerwakeupswit	19:20:29	2
9953	99	35	3,21	cyclictest	7760	-21	ssh	23:40:13	1
9969	99	34	2,20	cyclictest	359	66	irq/58-eth0	22:15:11	3
9961	99	34	2,5	cyclictest	8068	-21	head	20:45:30	2
9961	99	34	1,7	cyclictest	22485	-21	grep	21:00:28	2
9961	99	34	1,7	cyclictest	22485	-21	grep	21:00:28	2
9961	99	34	1,7	cyclictest	21459	-21	usage_Anybus	20:25:30	2
9961	99	34	1,7	cyclictest	18256	-21	ssh	23:10:02	2
9961	99	34	1,6	cyclictest	11503	-21	grep	20:15:27	2
9961	99	34	1,5	cyclictest	32388	-21	sh	00:30:28	2
9961	99	34	1,5	cyclictest	24309	-21	cat	21:05:20	2
9961	99	34	1,5	cyclictest	13928	-21	cut	22:30:22	2
9961	99	34	1,5	cyclictest	13928	-21	cut	22:30:22	2
9961	99	34	1,4	cyclictest	10306	-21	timerwakeupswit	19:40:28	2
9961	99	34	1,26	cyclictest	14560	-21	ssh	22:50:15	2
9961	99	34	0,8	cyclictest	24835	-21	tail	19:55:28	2
9969	99	33	1,15	cyclictest	359	66	irq/58-eth0	00:20:15	3
9961	99	33	1,8	cyclictest	26247	-21	grep	23:30:30	2
9961	99	33	1,7	cyclictest	2837	-21	kthreadcore	19:35:19	2
9961	99	33	1,29	cyclictest	28518	-21	cut	21:10:16	2
9961	99	33	1,29	cyclictest	28518	-21	cut	21:10:16	2
9961	99	33	0,6	cyclictest	1892	-21	ssh	22:25:13	2
9961	99	33	0,5	cyclictest	15584	-21	ssh	22:14:38	2
9961	99	33	0,4	cyclictest	26940	-21	ssh	21:45:13	2
9953	99	33	20,7	cyclictest	9937	-21	cyclictest	22:15:10	1
9953	99	33	1,23	cyclictest	23148	-21	ssh	21:25:12	1
9945	99	33	2,27	cyclictest	30667	-21	ssh	22:05:13	0
9945	99	33	21,4	cyclictest	14128	-21	apt-get	21:20:13	0
9945	99	33	1,23	cyclictest	16849	-21	ssh	23:45:15	0
9945	99	33	1,23	cyclictest	16849	-21	ssh	23:45:15	0
9969	99	32	10,14	cyclictest	359	66	irq/58-eth0	20:35:13	3
9969	99	32	10,14	cyclictest	359	66	irq/58-eth0	20:35:12	3
9961	99	32	1,7	cyclictest	22189	-21	/usr/sbin/munin	20:30:12	2
9961	99	32	1,7	cyclictest	11059	-21	ssh	21:53:46	2
9961	99	32	1,5	cyclictest	25821	-21	kthreadcore	19:25:19	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17