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 #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 50 highest latencies:

System rackaslot4s.osadl.org (updated Fri Aug 29, 2025 12:43:30)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3647561	99	77	69,6	cyclictest	3739348	-21	kworker/u16:4+flush-179:0		3
3647561	99	71	63,6	cyclictest	3718395	-21	kworker/u16:2+events_unbound		3
3647561	99	69	62,5	cyclictest	3722235	-21	kworker/u16:4+events_unbound		3
3647561	99	66	58,6	cyclictest	3718395	-21	kworker/u16:2+events_unbound		3
3647561	99	66	58,6	cyclictest	3707373	-21	kworker/u16:0+flush-179:0		3
3647547	99	66	57,7	cyclictest	3799039	-21	kworker/u16:5+flush-179:0		0
3647547	99	65	56,7	cyclictest	3768427	-21	kworker/u16:0+flush-179:0		0
3647561	99	64	57,5	cyclictest	3718395	-21	kworker/u16:2+flush-179:32		3
3647561	99	64	56,6	cyclictest	3805836	-21	kworker/u16:0+flush-179:0		3
3647551	99	64	55,7	cyclictest	3773104	-21	kworker/u16:3+flush-179:0		1
3647547	99	63	55,6	cyclictest	3671335	-21	kworker/u16:3+events_unbound		0
3647561	99	61	53,6	cyclictest	3746900	-21	kworker/u16:1+events_unbound		3
3647561	99	61	53,6	cyclictest	3739348	-21	kworker/u16:4+flush-179:0		3
3647561	99	60	50,8	cyclictest	3770573	-21	latency_hist		3
3647561	99	60	50,8	cyclictest	3739348	-21	kworker/u16:4+events_unbound		3
3647561	99	60	50,8	cyclictest	3739348	-21	kworker/u16:4+events_unbound		3
3647556	99	60	51,7	cyclictest	3669574	-21	kworker/u16:4+flush-179:32		2
3647547	99	59	49,7	cyclictest	3669574	-21	kworker/u16:4+events_unbound		0
3647561	99	58	51,5	cyclictest	3718395	-21	kworker/u16:2+events_unbound		3
3647551	99	57	21,22	cyclictest	3824887	-21	sh		1
3647561	99	56	48,6	cyclictest	3712053	-21	kworker/u16:1+events_unbound		3
3647547	99	56	48,6	cyclictest	3671335	-21	kworker/u16:3+events_unbound		0
3647561	99	55	46,7	cyclictest	3718395	-21	kworker/u16:2+events_unbound		3
3647547	99	55	48,5	cyclictest	3838684	-21	kworker/u16:0+flush-179:32		0
3647547	99	55	46,7	cyclictest	3768427	-21	kworker/u16:0+flush-179:0		0
3647561	99	54	47,5	cyclictest	3828770	-21	kworker/u16:3+events_unbound		3
3647561	99	54	46,6	cyclictest	3773104	-21	kworker/u16:3+events_unbound		3
3647551	99	54	26,17	cyclictest	0	-21	swapper/1		1
3647551	99	53	41,9	cyclictest	519	-21	systemd-journal		1
3647551	99	53	20,17	cyclictest	3814378	-21	rm		1
3647547	99	53	44,7	cyclictest	3718395	-21	kworker/u16:2+events_unbound		0
3647561	99	52	44,6	cyclictest	3799039	-21	kworker/u16:5+flush-179:0		3
3647561	99	52	44,6	cyclictest	3718395	-21	kworker/u16:2+flush-179:0		3
3647561	99	52	44,6	cyclictest	3718395	-21	kworker/u16:2+events_unbound		3
3647561	99	52	44,6	cyclictest	3718395	-21	kworker/u16:2+events_unbound		3
3647551	99	52	17,22	cyclictest	3732241	-21	date		1
3647547	99	52	45,5	cyclictest	3671335	-21	kworker/u16:3+events_unbound		0
3647561	99	51	43,6	cyclictest	3671335	-21	kworker/u16:3+flush-179:32		3
3647561	99	50	44,4	cyclictest	3823523	-21	kworker/u16:1+flush-179:0		3
3647561	99	50	43,5	cyclictest	3726995	-21	kworker/u16:1+events_unbound		3
3647561	99	50	40,7	cyclictest	3799039	-21	kworker/u16:5+flush-179:0		3
3647551	99	50	20,16	cyclictest	3710075	-21	rm		1
3647561	99	49	42,5	cyclictest	3746900	-21	kworker/u16:1+events_unbound		3
3647556	99	49	38,8	cyclictest	3822552	-21	cat		2
3647561	99	48	41,5	cyclictest	3746900	-21	kworker/u16:1+events_unbound		3
3647561	99	48	41,5	cyclictest	3662274	-21	kworker/u16:1+flush-179:0		3
3647561	99	48	39,7	cyclictest	3823523	-21	kworker/u16:1+events_unbound		3
3647561	99	48	39,7	cyclictest	3649167	-21	kworker/u16:0+events_unbound		3
3647556	99	48	38,7	cyclictest	3848428	-21	kworker/u16:4+flush-179:0		2
3647551	99	48	17,14	cyclictest	3797974	-21	rm		1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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