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 Thu Apr 02, 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
3469893	99	53	49,3	cyclictest	3470737	-21	kworker/u8:4+events_unbound	07:15:11	1
3469893	99	53	48,2	cyclictest	3686704	-21	kworker/u8:1+events_unbound	11:15:23	1
3469893	99	50	46,3	cyclictest	3712719	-21	kworker/u8:2+events_unbound	12:00:24	1
3469902	99	49	46,2	cyclictest	3650818	-21	kworker/u8:3+events_unbound	11:25:25	3
3469893	99	49	46,2	cyclictest	3475971	-21	kworker/u8:1+flush-259:0	08:35:24	1
3469885	99	49	42,3	cyclictest	3541996	-21	kworker/u8:0+events_unbound	09:00:14	0
3469902	99	47	44,3	cyclictest	3500272	-21	kworker/u8:4+events_unbound	08:50:16	3
3469893	99	46	42,2	cyclictest	3579668	-21	kworker/u8:0+events_unbound	10:40:12	1
3469885	99	46	42,3	cyclictest	3650818	-21	kworker/u8:3+events_unbound	11:50:19	0
3469885	99	46	39,2	cyclictest	3500272	-21	kworker/u8:4+events_unbound	10:00:14	0
3469893	99	45	41,3	cyclictest	3739195	-21	apt-get	11:55:11	1
3469885	99	45	41,3	cyclictest	3579668	-21	kworker/u8:0+events_unbound	10:25:23	0
3469902	99	44	41,2	cyclictest	3475971	-21	kworker/u8:1+events_unbound	08:45:12	3
3469902	99	44	41,2	cyclictest	3470737	-21	kworker/u8:4+events_unbound	07:15:18	3
3469893	99	44	38,3	cyclictest	3650818	-21	kworker/u8:3+events_unbound	11:45:23	1
3469902	99	43	40,2	cyclictest	3650818	-21	kworker/u8:3+events_unbound	12:25:22	3
3469902	99	43	39,3	cyclictest	3765111	-21	kworker/u8:0+events_unbound	12:35:23	3
3469902	99	43	39,3	cyclictest	3666326	-21	kworker/u8:2+events_unbound	11:00:23	3
3469902	99	43	39,3	cyclictest	3666288	-21	latency_hist	10:45:01	3
3469885	99	43	40,2	cyclictest	3500272	-21	kworker/u8:4+events_unbound	10:15:21	0
3469902	99	42	39,2	cyclictest	3475971	-21	kworker/u8:1+events_unbound	08:40:23	3
3469893	99	42	39,2	cyclictest	3770031	-21	kworker/u8:1+events_unbound	12:25:20	1
3469893	99	42	38,3	cyclictest	3579668	-21	kworker/u8:0+flush-259:0	09:45:21	1
3469885	99	42	38,3	cyclictest	3619880	-21	kworker/u8:1+flush-259:0	10:05:24	0
3469902	99	41	38,2	cyclictest	3475971	-21	kworker/u8:1+events_unbound	07:25:10	3
3469902	99	41	37,3	cyclictest	3500272	-21	kworker/u8:4+events_unbound	09:30:23	3
3469893	99	41	39,2	cyclictest	3686704	-21	kworker/u8:1+events_unbound	11:25:15	1
3469902	99	40	37,2	cyclictest	3712719	-21	kworker/u8:2+events_unbound	11:35:24	3
3469893	99	40	37,2	cyclictest	3579668	-21	kworker/u8:0+events_unbound	10:50:15	1
3469893	99	40	35,3	cyclictest	3614702	-21	latency_hist	09:55:00	1
3469885	99	40	37,2	cyclictest	3650818	-21	kworker/u8:3+events_unbound	10:30:18	0
3469885	99	40	36,3	cyclictest	3749194	-21	kworker/u8:4+events_unbound	12:15:21	0
3469885	99	40	36,3	cyclictest	3500272	-21	kworker/u8:4+events_unbound	08:55:13	0
3469893	99	39	36,2	cyclictest	3475971	-21	kworker/u8:1+events_unbound	07:25:09	1
3469893	99	39	35,3	cyclictest	3500272	-21	kworker/u8:4+events_unbound	08:10:15	1
3469893	99	39	35,2	cyclictest	3579668	-21	kworker/u8:0+events_unbound	10:00:19	1
3469885	99	39	36,2	cyclictest	3712719	-21	kworker/u8:2+events_unbound	11:35:22	0
3469902	99	38	36,2	cyclictest	3500272	-21	kworker/u8:4+events_unbound	09:50:22	3
3469902	99	38	35,2	cyclictest	3697296	-21	kworker/u8:0+events_unbound	11:20:21	3
3469902	99	38	35,2	cyclictest	3650818	-21	kworker/u8:3+events_unbound	10:50:22	3
3469893	99	38	35,2	cyclictest	3650818	-21	kworker/u8:3+events_unbound	12:15:13	1
3469893	99	38	34,3	cyclictest	3500272	-21	kworker/u8:4+events_unbound	08:05:17	1
3469902	99	37	34,2	cyclictest	3770031	-21	kworker/u8:1+events_unbound	12:30:14	3
3469902	99	37	34,2	cyclictest	3650818	-21	kworker/u8:3+events_unbound	10:30:25	3
3469893	99	37	34,2	cyclictest	3697296	-21	kworker/u8:0+events_unbound	11:20:13	1
3469893	99	37	34,2	cyclictest	3562724	-21	kworker/u8:1+events_unbound	09:15:16	1
3469885	99	37	34,2	cyclictest	3712719	-21	kworker/u8:2+events_unbound	12:00:22	0
3469885	99	37	34,2	cyclictest	3712719	-21	kworker/u8:2+events_unbound	11:30:14	0
3469885	99	37	34,2	cyclictest	3692047	-21	kworker/u8:2+events_unbound	11:10:19	0
3469885	99	37	34,2	cyclictest	3475971	-21	kworker/u8:1+events_unbound	07:55:20	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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