OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #5

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
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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 rack0slot5s.osadl.org (updated Fri May 15, 2026 00:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1262124	99	57	5,26	cyclictest	91048	-21	CPU		7
1262124	99	56	6,25	cyclictest	0	-21	swapper/15		7
1262124	99	55	5,39	cyclictest	91048	-21	CPU		7
1262124	99	55	5,39	cyclictest	91048	-21	CPU		7
1262124	99	54	4,25	cyclictest	0	-21	swapper/15		7
1261434	2	49	46,2	sleep14	0	-21	swapper/14		6
1262094	99	48	5,26	cyclictest	1535055	-31	munin-graph		14
1261449	2	46	44,2	sleep10	0	-21	swapper/10		2
1262124	99	45	5,26	cyclictest	91048	-21	CPU		7
1261731	2	45	43,2	sleep5	0	-21	swapper/5		11
1360	98	44	0,43	rtkit-daemon	0	-21	swapper/3		9
1261680	2	44	42,1	sleep9	0	-21	swapper/9		15
1262124	99	43	4,25	cyclictest	91048	-21	CPU		7
1261726	2	43	41,2	sleep2	0	-21	swapper/2		8
1261444	2	43	40,2	sleep7	0	-21	swapper/7		13
1262124	99	42	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	42	4,25	cyclictest	0	-21	swapper/15		7
1261499	2	42	40,2	sleep6	0	-21	swapper/6		12
1262124	99	40	4,11	cyclictest	0	-21	swapper/15		7
1262124	99	40	4,11	cyclictest	0	-21	swapper/15		7
1261540	2	38	36,2	sleep11	0	-21	swapper/11		3
1260588	2	38	36,1	sleep15	0	-21	swapper/15		7
1261684	2	37	35,2	sleep13	0	-21	swapper/13		5
1261456	2	37	36,1	sleep0	0	-21	swapper/0		0
1261609	2	36	34,2	sleep8	0	-21	swapper/8		14
1261511	2	35	33,2	sleep1	0	-21	swapper/1		1
1262124	99	32	6,25	cyclictest	0	-21	swapper/15		7
1262072	99	32	27,4	cyclictest	1561	-21	snmpd		8
1262124	99	31	5,25	cyclictest	0	-21	swapper/15		7
1262124	99	31	5,25	cyclictest	0	-21	swapper/15		7
1262124	99	31	4,26	cyclictest	0	-21	swapper/15		7
1262124	99	30	6,11	cyclictest	0	-21	swapper/15		7
1262124	99	30	5,25	cyclictest	0	-21	swapper/15		7
1262124	99	30	5,25	cyclictest	0	-21	swapper/15		7
1262124	99	30	4,26	cyclictest	0	-21	swapper/15		7
1262124	99	30	4,25	cyclictest	0	-21	swapper/15		7
1262107	99	30	26,3	cyclictest	1561	-21	snmpd		3
1262107	99	30	26,3	cyclictest	1561	-21	snmpd		3
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262124	99	29	4,25	cyclictest	0	-21	swapper/15		7
1262072	99	29	26,3	cyclictest	0	-21	swapper/2		8
1262072	99	29	0,27	cyclictest	0	-21	swapper/2		8
1262124	99	28	3,25	cyclictest	0	-21	swapper/15		7
1262124	99	28	0,27	cyclictest	0	-21	swapper/15		7
1262111	99	28	3,3	cyclictest	865740	-21	kworker/12:0+mm_percpu_wq		4
1262111	99	28	26,1	cyclictest	1561	-21	snmpd		4
1262111	99	28	0,27	cyclictest	0	-21	swapper/12		4
1262111	99	28	0,27	cyclictest	0	-21	swapper/12		4
1262107	99	28	0,27	cyclictest	0	-21	swapper/11		3
1262107	99	28	0,27	cyclictest	0	-21	swapper/11		3
1262107	99	28	0,27	cyclictest	0	-21	swapper/11		3
1262102	99	28	0,27	cyclictest	0	-21	swapper/10		2
1262102	99	28	0,27	cyclictest	0	-21	swapper/10		2
1262102	99	28	0,27	cyclictest	0	-21	swapper/10		2
1262102	99	28	0,27	cyclictest	0	-21	swapper/10		2
1262102	99	28	0,27	cyclictest	0	-21	swapper/10		2
1262099	99	28	26,1	cyclictest	1561	-21	snmpd		15
1262099	99	28	0,27	cyclictest	0	-21	swapper/9		15
1262099	99	28	0,1	cyclictest	0	-21	swapper/9		15
1262094	99	28	25,2	cyclictest	1561	-21	snmpd		14
1262094	99	28	0,27	cyclictest	0	-21	swapper/8		14
1262094	99	28	0,27	cyclictest	0	-21	swapper/8		14
1262087	99	28	27,1	cyclictest	0	-21	swapper/6		12
1262087	99	28	0,27	cyclictest	0	-21	swapper/6		12
1262082	99	28	27,1	cyclictest	1561	-21	snmpd		11
1262082	99	28	26,1	cyclictest	1561	-21	snmpd		11
1262082	99	28	0,27	cyclictest	0	-21	swapper/5		11
1262082	99	28	0,27	cyclictest	0	-21	swapper/5		11
1262075	99	28	27,1	cyclictest	1561	-21	snmpd		9
1262075	99	28	0,27	cyclictest	0	-21	swapper/3		9
1262072	99	28	0,27	cyclictest	0	-21	swapper/2		8
1262072	99	28	0,27	cyclictest	0	-21	swapper/2		8
1262064	99	28	5,1	cyclictest	0	-21	swapper/1		1
1262064	99	28	0,27	cyclictest	0	-21	swapper/1		1
1262059	99	28	0,27	cyclictest	0	-21	swapper/0		0
1262124	99	27	26,1	cyclictest	0	-21	swapper/15		7
1262124	99	27	0,1	cyclictest	0	-21	swapper/15		7
1262119	99	27	0,1	cyclictest	0	-21	swapper/14		6
1262114	99	27	26,1	cyclictest	1561	-21	snmpd		5
1262114	99	27	26,1	cyclictest	1561	-21	snmpd		5
1262114	99	27	26,1	cyclictest	0	-21	swapper/13		5
1262114	99	27	25,1	cyclictest	1561	-21	snmpd		5
1262114	99	27	0,27	cyclictest	0	-21	swapper/13		5
1262114	99	27	0,27	cyclictest	0	-21	swapper/13		5
1262114	99	27	0,1	cyclictest	0	-21	swapper/13		5
1262114	99	27	0,1	cyclictest	0	-21	swapper/13		5
1262111	99	27	26,1	cyclictest	1561	-21	snmpd		4
1262111	99	27	0,26	cyclictest	0	-21	swapper/12		4
1262107	99	27	26,1	cyclictest	0	-21	swapper/11		3
1262107	99	27	0,27	cyclictest	0	-21	swapper/11		3
1262102	99	27	26,1	cyclictest	1561	-21	snmpd		2
1262102	99	27	26,1	cyclictest	0	-21	swapper/10		2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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