OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, 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: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackaslot4s.osadl.org (updated Mon Sep 15, 2025 12:43:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
414228	99	80	70,7	cyclictest	401324	-21	kworker/u16:0+flush-179:0		2
414232	99	78	71,5	cyclictest	606398	-21	kworker/u16:1+events_unbound		3
414232	99	77	70,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414228	99	74	66,6	cyclictest	399039	-21	kworker/u16:3+flush-179:0		2
414221	99	73	64,7	cyclictest	585321	-21	kworker/u16:1+flush-179:0		0
414232	99	72	64,6	cyclictest	424342	-21	kworker/u16:0+events_unbound		3
414232	99	72	64,6	cyclictest	399039	-21	kworker/u16:3+events_unbound		3
414228	99	72	61,8	cyclictest	443115	-21	kworker/u16:0+events_unbound		2
414232	99	71	64,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	71	63,6	cyclictest	532774	-21	kworker/u16:5+events_unbound		3
414232	99	71	63,6	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	70	63,5	cyclictest	448424	-21	kworker/u16:4+events_unbound		3
414232	99	69	62,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	69	62,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	69	61,6	cyclictest	521629	-21	kworker/u16:2+events_unbound		3
414232	99	68	61,5	cyclictest	448424	-21	kworker/u16:4+events_unbound		3
414232	99	67	60,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	67	57,8	cyclictest	484738	-21	kworker/u16:1+events_unbound		3
414232	99	65	57,6	cyclictest	581095	-21	kworker/u16:5+events_unbound		3
414221	99	63	54,6	cyclictest	443115	-21	kworker/u16:0+flush-179:0		0
414232	99	62	55,5	cyclictest	581095	-21	kworker/u16:5+events_unbound		3
414232	99	61	54,5	cyclictest	472543	-21	kworker/u16:3+events_unbound		3
414232	99	61	54,5	cyclictest	472543	-21	kworker/u16:3+events_unbound		3
414232	99	61	53,6	cyclictest	472543	-21	kworker/u16:3+events_unbound		3
414232	99	61	53,6	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	61	50,8	cyclictest	470765	-21	munin-node		3
414232	99	60	55,3	cyclictest	394489	-21	kworker/u16:2+events_unbound		3
414232	99	60	53,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	60	53,5	cyclictest	394489	-21	kworker/u16:2+events_unbound		3
414232	99	60	53,5	cyclictest	394489	-21	kworker/u16:2+events_unbound		3
414232	99	60	49,8	cyclictest	515357	-21	latency_hist		3
414221	99	60	51,7	cyclictest	455026	-21	kworker/u16:1+events_unbound		0
414232	99	59	51,6	cyclictest	461830	-21	kworker/u16:2+events_unbound		3
414232	99	59	51,6	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414228	99	59	51,5	cyclictest	530357	-21	kworker/u16:3+events_unbound		2
414228	99	59	50,6	cyclictest	443115	-21	kworker/u16:0+flush-179:0		2
414232	99	58	50,6	cyclictest	394489	-21	kworker/u16:2+events_unbound		3
414228	99	58	51,5	cyclictest	455026	-21	kworker/u16:1+flush-179:32		2
414226	99	58	48,8	cyclictest	521629	-21	kworker/u16:2+events_unbound		1
414221	99	58	49,7	cyclictest	455026	-21	kworker/u16:1+flush-179:0		0
414232	99	57	50,5	cyclictest	572938	-21	kworker/u16:3+events_unbound		3
414232	99	57	50,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	57	49,6	cyclictest	540653	-21	kworker/u16:1+flush-179:0		3
414232	99	56	49,5	cyclictest	540653	-21	kworker/u16:1+events_unbound		3
414232	99	56	49,5	cyclictest	472543	-21	kworker/u16:3+events_unbound		3
414232	99	56	49,5	cyclictest	448424	-21	kworker/u16:4+events_unbound		3
414232	99	56	48,6	cyclictest	488803	-21	kworker/u16:2+events_unbound		3
414232	99	56	48,6	cyclictest	488803	-21	kworker/u16:2+events_unbound		3
414228	99	56	48,6	cyclictest	521629	-21	kworker/u16:2+flush-179:0		2
414228	99	56	48,6	cyclictest	521629	-21	kworker/u16:2+flush-179:0		2
414232	99	55	48,5	cyclictest	394489	-21	kworker/u16:2+events_unbound		3
414232	99	55	45,7	cyclictest	488803	-21	kworker/u16:2+flush-179:0		3
414232	99	55	45,7	cyclictest	488803	-21	kworker/u16:2+flush-179:0		3
414228	99	55	46,7	cyclictest	443115	-21	kworker/u16:0+flush-179:32		2
414232	99	54	47,5	cyclictest	572938	-21	kworker/u16:3+events_unbound		3
414232	99	54	47,5	cyclictest	540653	-21	kworker/u16:1+events_unbound		3
414232	99	54	47,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	54	46,6	cyclictest	484738	-21	kworker/u16:1+events_unbound		3
414232	99	54	46,6	cyclictest	484738	-21	kworker/u16:1+events_unbound		3
414232	99	53	45,6	cyclictest	472543	-21	kworker/u16:3+events_unbound		3
414221	99	53	45,6	cyclictest	530357	-21	kworker/u16:3+flush-179:32		0
414232	99	52	45,5	cyclictest	424342	-21	kworker/u16:0+events_unbound		3
414232	99	52	45,5	cyclictest	424342	-21	kworker/u16:0+events_unbound		3
414232	99	52	45,5	cyclictest	413642	-21	kworker/u16:4+events_unbound		3
414232	99	52	44,6	cyclictest	521629	-21	kworker/u16:2+events_unbound		3
414232	99	52	43,7	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414228	99	52	44,6	cyclictest	443115	-21	kworker/u16:0+flush-179:0		2
414232	99	51	44,5	cyclictest	553466	-21	kworker/u16:4+events_unbound		3
414232	99	51	44,5	cyclictest	439727	-21	kworker/u16:3+events_unbound		3
414232	99	51	44,5	cyclictest	439727	-21	kworker/u16:3+events_unbound		3
414232	99	51	43,6	cyclictest	399039	-21	kworker/u16:3+events_unbound		3
414228	99	51	43,6	cyclictest	521629	-21	kworker/u16:2+flush-179:32		2
414228	99	51	42,6	cyclictest	472543	-21	kworker/u16:3+flush-179:0		2
414228	99	51	42,6	cyclictest	472543	-21	kworker/u16:3+flush-179:0		2
414226	99	51	42,7	cyclictest	424342	-21	kworker/u16:0+events_unbound		1
414232	99	50	43,5	cyclictest	581095	-21	kworker/u16:5+events_unbound		3
414232	99	50	43,5	cyclictest	461830	-21	kworker/u16:2+events_unbound		3
414232	99	50	42,6	cyclictest	521629	-21	kworker/u16:2+events_unbound		3
414228	99	50	42,6	cyclictest	394489	-21	kworker/u16:2+flush-179:32		2
414228	99	50	41,7	cyclictest	585321	-21	kworker/u16:1+flush-179:0		2
414228	99	50	39,8	cyclictest	607385	-21	cat		2
414226	99	50	42,6	cyclictest	461830	-21	kworker/u16:2+flush-179:0		1
414226	99	50	42,6	cyclictest	448424	-21	kworker/u16:4+flush-179:32		1
414226	99	50	42,6	cyclictest	448424	-21	kworker/u16:4+flush-179:32		1
414221	99	50	41,7	cyclictest	399039	-21	kworker/u16:3+flush-179:0		0
414221	99	50	39,8	cyclictest	519	-21	systemd-journal		0
414232	99	49	42,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414232	99	49	42,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		3
414228	99	49	41,6	cyclictest	568286	-21	kworker/u16:1+flush-179:0		2
414226	99	49	41,6	cyclictest	455039	-21	kworker/u16:5+events_unbound		1
414226	99	49	39,7	cyclictest	394489	-21	kworker/u16:2+flush-179:32		1
414228	99	48	40,6	cyclictest	448424	-21	kworker/u16:4+events_unbound		2
414228	99	48	40,6	cyclictest	443115	-21	kworker/u16:0+flush-179:0		2
414228	99	48	37,8	cyclictest	561968	-21	latency_hist		2
414221	99	48	24,21	cyclictest	443115	-21	kworker/u16:0+events_unbound		0
414228	99	47	40,5	cyclictest	443115	-21	kworker/u16:0+events_unbound		2
414226	99	47	36,8	cyclictest	519	-21	systemd-journal		1
414226	99	47	36,8	cyclictest	519	-21	systemd-journal		1
414226	99	46	38,6	cyclictest	472543	-21	kworker/u16:3+events_unbound		1
414226	99	46	35,8	cyclictest	441434	-21	latency_hist		1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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