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 #e, 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
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rackeslot4s.osadl.org (updated Sat Jun 27, 2026 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2182942	99	62	59,2	cyclictest	2348738	-21	kworker/u8:0+events_unbound	09:55:13	2
2182934	99	61	53,5	cyclictest	2467604	-21	latency_hist	11:45:00	0
2182942	99	50	44,4	cyclictest	2452094	-21	latency_hist	11:30:01	2
2182937	99	50	46,3	cyclictest	2499162	-21	kworker/u8:3+flush-259:0	12:15:44	1
2182937	99	48	45,2	cyclictest	2431695	-21	kworker/u8:4+events_unbound	12:10:21	1
2182937	99	48	45,2	cyclictest	2281545	-21	kworker/u8:4+events_unbound	10:55:01	1
2182942	99	47	44,2	cyclictest	2177785	-21	kworker/u8:1+flush-259:0	07:35:01	2
2182942	99	46	42,3	cyclictest	2472944	-21	kworker/u8:0+flush-259:0	12:00:35	2
2182937	99	46	43,2	cyclictest	2322723	-21	kworker/u8:0+events_unbound	09:35:22	1
2182937	99	46	43,2	cyclictest	2213942	-21	kworker/u8:3+flush-259:0	07:45:01	1
2182937	99	46	42,3	cyclictest	2426369	-21	kworker/u8:3+events_unbound	11:15:21	1
2182942	99	45	42,2	cyclictest	2462668	-21	kworker/u8:1+events_unbound	12:20:15	2
2182942	99	44	41,2	cyclictest	2462668	-21	kworker/u8:1+flush-259:0	11:50:45	2
2182942	99	43	40,2	cyclictest	2281545	-21	kworker/u8:4+flush-259:0	10:40:25	2
2182942	99	43	39,3	cyclictest	2281545	-21	kworker/u8:4+events_unbound	09:40:20	2
2182942	99	43	39,3	cyclictest	1939814	-21	kworker/u8:3+events_unbound	07:20:22	2
2182934	99	42	37,3	cyclictest	2208629	-21	kworker/u8:0+flush-259:0	08:10:00	0
2182942	99	41	38,2	cyclictest	2281545	-21	kworker/u8:4+flush-259:0	09:50:15	2
2182942	99	41	38,2	cyclictest	2276370	-21	kworker/u8:3+flush-259:0	09:05:36	2
2182942	99	41	38,2	cyclictest	2260508	-21	kworker/u8:2+events_unbound	08:40:02	2
2182937	99	41	38,2	cyclictest	2379917	-21	kworker/u8:2+events_unbound	10:35:22	1
2182937	99	41	38,2	cyclictest	2281545	-21	kworker/u8:4+flush-259:0	09:00:15	1
2182937	99	41	38,2	cyclictest	2239896	-21	kworker/u8:1+flush-259:0	08:15:23	1
2182942	99	40	37,2	cyclictest	2462668	-21	kworker/u8:1+events_unbound	11:55:42	2
2182937	99	40	37,2	cyclictest	2379917	-21	kworker/u8:2+flush-259:0	10:30:34	1
2182937	99	40	37,2	cyclictest	2281545	-21	kworker/u8:4+events_unbound	09:40:14	1
2182937	99	40	37,2	cyclictest	2213942	-21	kworker/u8:3+flush-259:0	08:30:00	1
2182937	99	40	36,3	cyclictest	2404790	-21	kworker/u8:1+flush-259:0	10:48:35	1
2182942	99	39	36,2	cyclictest	2472944	-21	kworker/u8:0+events_unbound	12:05:24	2
2182942	99	39	36,2	cyclictest	2431695	-21	kworker/u8:4+flush-259:0	11:45:39	2
2182942	99	39	36,2	cyclictest	2431695	-21	kworker/u8:4+events_unbound	12:10:25	2
2182942	99	39	36,2	cyclictest	2281545	-21	kworker/u8:4+events_unbound	10:50:24	2
2182942	99	39	36,2	cyclictest	2177785	-21	kworker/u8:1+flush-259:0	07:40:35	2
2182942	99	39	35,3	cyclictest	1939814	-21	kworker/u8:3+flush-259:0	07:19:49	2
2182937	99	39	35,3	cyclictest	335557	-21	systemd-journal	11:34:34	1
2182937	99	39	35,3	cyclictest	2348738	-21	kworker/u8:0+flush-259:0	10:10:22	1
2182937	99	39	31,6	cyclictest	2369293	-21	cp	10:10:01	1
2182942	99	38	36,2	cyclictest	2260508	-21	kworker/u8:2+events_unbound	08:33:35	2
2182942	99	38	35,2	cyclictest	2208629	-21	kworker/u8:0+flush-259:0	07:35:24	2
2182942	99	38	34,3	cyclictest	2462668	-21	kworker/u8:1+flush-259:0	12:25:45	2
2182942	99	38	34,3	cyclictest	2270819	-21	kworker/u8:1+flush-259:0	08:35:25	2
2182937	99	38	35,2	cyclictest	2177785	-21	kworker/u8:1+events_unbound	07:30:21	1
2182937	99	38	34,3	cyclictest	2431695	-21	kworker/u8:4+flush-259:0	11:20:41	1
2182944	99	37	30,5	cyclictest	509	-21	rs:main		3
2182942	99	37	34,2	cyclictest	2348738	-21	kworker/u8:0+flush-259:0	10:10:20	2
2182942	99	37	34,2	cyclictest	2213942	-21	kworker/u8:3+events_unbound	07:50:20	2
2182942	99	37	33,3	cyclictest	2208629	-21	kworker/u8:0+events_unbound	08:19:36	2
2182937	99	37	34,2	cyclictest	2472944	-21	kworker/u8:0+flush-259:0	12:05:15	1
2182937	99	37	34,2	cyclictest	2276370	-21	kworker/u8:3+events_unbound	09:25:19	1
2182937	99	37	34,2	cyclictest	2260508	-21	kworker/u8:2+events_unbound	08:30:23	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2021-09-01 - 00:34