OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Wed Dec 03, 2025 00:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3465188	2	202	0,2	sleep3	586	-21	kworker/3:2+events	19:41:16	3
3430495	99	74	50,8	cyclictest	3720336	-21	cp	00:00:01	2
3430487	99	74	70,3	cyclictest	3610411	-21	kworker/u8:2+events_unbound	23:01:25	0
3430487	99	68	64,3	cyclictest	3729817	-21	kworker/u8:0+events_unbound	00:31:24	0
3430491	99	66	61,4	cyclictest	3420780	-21	kworker/u8:0+events_unbound	19:11:25	1
3430491	99	66	61,4	cyclictest	3420780	-21	kworker/u8:0+events_unbound	19:11:24	1
3430491	99	63	59,2	cyclictest	3551041	-21	kworker/u8:1+flush-8:0	21:21:24	1
3430491	99	63	59,2	cyclictest	3551041	-21	kworker/u8:1+flush-8:0	21:21:24	1
3577452	2	62	0,3	sleep3	586	-21	kworker/3:2+events	21:36:12	3
3430487	99	62	53,3	cyclictest	3690381	-21	kworker/u8:3+events_unbound	23:56:25	0
3430487	99	61	57,3	cyclictest	3590510	-21	kworker/u8:1+events_unbound	22:06:22	0
3430487	99	60	56,3	cyclictest	3453228	-21	kworker/u8:2+events_unbound	20:36:26	0
3430491	99	58	50,6	cyclictest	3684915	-21	kworker/u8:2+flush-8:0	23:46:19	1
3430491	99	57	48,3	cyclictest	3430358	-21	kworker/u8:1+events_unbound	19:46:09	1
3430487	99	57	53,3	cyclictest	3580613	-21	kworker/u8:0+events_unbound	21:41:24	0
3430487	99	57	52,3	cyclictest	3610411	-21	kworker/u8:2+events_unbound	22:31:21	0
3430487	99	57	49,3	cyclictest	3453228	-21	kworker/u8:2+events_unbound	19:56:12	0
3430491	99	56	50,4	cyclictest	3453228	-21	kworker/u8:2+events_unbound	20:21:13	1
3430487	99	56	52,3	cyclictest	3453228	-21	kworker/u8:2+events_unbound	19:41:24	0
3430491	99	55	50,4	cyclictest	3690381	-21	kworker/u8:3+flush-8:0	00:36:20	1
3430491	99	55	50,4	cyclictest	3430358	-21	kworker/u8:1+events_unbound	19:31:18	1
3430487	99	55	52,2	cyclictest	3675527	-21	kworker/u8:0+events_unbound	23:36:26	0
3430487	99	55	51,3	cyclictest	3670088	-21	kworker/u8:3+events_unbound	23:11:23	0
3430487	99	55	50,4	cyclictest	3719755	-21	kworker/u8:1+events_unbound	00:06:23	0
3430491	99	54	49,3	cyclictest	3516433	-21	kworker/u8:3+events_unbound	22:11:09	1
3430491	99	54	44,8	cyclictest	282	-21	systemd-journal	20:30:00	1
3430487	99	54	50,3	cyclictest	3684915	-21	kworker/u8:2+events_unbound	23:46:22	0
3430487	99	54	44,8	cyclictest	3437914	-21	diskstats	19:16:10	0
3430487	99	54	44,8	cyclictest	3437914	-21	diskstats	19:16:10	0
3430491	99	53	48,4	cyclictest	3580613	-21	kworker/u8:0+events_unbound	21:36:27	1
3430491	99	53	47,4	cyclictest	3690381	-21	kworker/u8:3+flush-8:0	23:41:20	1
3430491	99	53	46,5	cyclictest	3641393	-21	kworker/u8:3+flush-8:0	22:51:13	1
3430487	99	53	49,3	cyclictest	3729817	-21	kworker/u8:0+events_unbound	00:11:20	0
3430487	99	53	49,3	cyclictest	3625515	-21	kworker/u8:0+events_unbound	22:41:17	0
3430487	99	53	49,3	cyclictest	3516433	-21	kworker/u8:3+events_unbound	22:11:23	0
3430487	99	53	49,3	cyclictest	3501948	-21	kworker/u8:0+events_unbound	20:31:22	0
3430487	99	53	48,4	cyclictest	3516433	-21	kworker/u8:3+events_unbound	21:56:22	0
3430491	99	52	48,3	cyclictest	3420780	-21	kworker/u8:0+events_unbound	19:21:11	1
3430491	99	52	47,3	cyclictest	3516433	-21	kworker/u8:3+events_unbound	20:36:19	1
3430491	99	52	47,3	cyclictest	3501948	-21	kworker/u8:0+events_unbound	20:31:08	1
3430491	99	52	46,4	cyclictest	3641393	-21	kworker/u8:3+flush-8:0	22:56:18	1
3430491	99	52	45,5	cyclictest	3655289	-21	kworker/u8:0+flush-8:0	23:06:20	1
3430487	99	52	48,3	cyclictest	3719755	-21	kworker/u8:1+events_unbound	00:01:12	0
3430487	99	52	48,3	cyclictest	3641393	-21	kworker/u8:3+events_unbound	22:51:18	0
3430487	99	52	48,3	cyclictest	3580613	-21	kworker/u8:0+events_unbound	21:51:25	0
3430487	99	52	48,3	cyclictest	3430358	-21	kworker/u8:1+events_unbound	19:51:24	0
3430487	99	52	47,3	cyclictest	3430358	-21	kworker/u8:1+events_unbound	19:46:21	0
3430487	99	52	45,6	cyclictest	3420780	-21	kworker/u8:0+events_unbound	19:21:10	0
3430487	99	52	43,3	cyclictest	3521501	-21	kworker/u8:0+events_unbound	21:01:24	0
3699560	2	51	0,2	sleep1	0	-21	swapper/1	23:36:23	1
3430491	99	51	45,5	cyclictest	3487122	-21	kworker/u8:3+flush-8:0	20:16:21	1
3430487	99	51	47,3	cyclictest	3516433	-21	kworker/u8:3+events_unbound	22:26:26	0
3430487	99	51	47,3	cyclictest	3430358	-21	kworker/u8:1+events_unbound	20:06:08	0
3430487	99	51	46,4	cyclictest	3516433	-21	kworker/u8:3+events_unbound	20:46:10	0
3430487	99	51	45,4	cyclictest	3729817	-21	kworker/u8:0+events_unbound	00:16:10	0
3430491	99	50	46,3	cyclictest	3516433	-21	kworker/u8:3+events_unbound	20:56:19	1
3430491	99	50	46,3	cyclictest	3430358	-21	kworker/u8:1+flush-8:0	19:26:19	1
3430491	99	50	44,5	cyclictest	3690381	-21	kworker/u8:3+flush-8:0	23:56:20	1
3430491	99	50	44,4	cyclictest	3590510	-21	kworker/u8:1+events_unbound	22:06:20	1
3430491	99	50	39,4	cyclictest	3516433	-21	kworker/u8:3+flush-8:0	22:16:21	1
3430487	99	50	46,3	cyclictest	3516433	-21	kworker/u8:3+events_unbound	20:41:22	0
3430487	99	50	45,4	cyclictest	3660702	-21	kworker/u8:1+events_unbound	23:26:19	0
3430487	99	50	45,4	cyclictest	3575316	-21	kworker/u8:2+events_unbound	21:36:23	0
3430491	99	49	43,5	cyclictest	3516433	-21	kworker/u8:3+flush-8:0	22:01:12	1
3430491	99	49	43,4	cyclictest	3690381	-21	kworker/u8:3+flush-8:0	23:31:11	1
3430491	99	49	38,3	cyclictest	3575316	-21	kworker/u8:2+events_unbound	21:46:09	1
3430487	99	49	45,3	cyclictest	3690381	-21	kworker/u8:3+events_unbound	00:26:13	0
3430487	99	49	45,3	cyclictest	3690381	-21	kworker/u8:3+events_unbound	00:26:13	0
3430487	99	49	45,3	cyclictest	3690381	-21	kworker/u8:3+events_unbound	00:21:07	0
3430487	99	49	44,4	cyclictest	3675527	-21	kworker/u8:0+flush-8:0	23:16:17	0
3430487	99	49	43,4	cyclictest	3590510	-21	kworker/u8:1+events_unbound	22:01:22	0
3430491	99	48	45,2	cyclictest	3516433	-21	kworker/u8:3+events_unbound	21:06:19	1
3430491	99	48	43,4	cyclictest	3453228	-21	kworker/u8:2+flush-8:0	20:01:18	1
3430491	99	48	42,5	cyclictest	3690381	-21	kworker/u8:3+flush-8:0	00:26:26	1
3430491	99	48	42,5	cyclictest	3690381	-21	kworker/u8:3+flush-8:0	00:26:26	1
3430491	99	48	42,5	cyclictest	3516433	-21	kworker/u8:3+flush-8:0	20:51:21	1
3430491	99	48	41,5	cyclictest	3610411	-21	kworker/u8:2+flush-8:0	22:21:19	1
3430487	99	48	44,3	cyclictest	3641393	-21	kworker/u8:3+events_unbound	22:46:11	0
3430487	99	48	44,3	cyclictest	3516433	-21	kworker/u8:3+events_unbound	21:06:08	0
3430487	99	48	44,3	cyclictest	3430358	-21	kworker/u8:1+events_unbound	19:36:21	0
3430487	99	48	43,4	cyclictest	3690381	-21	kworker/u8:3+events_unbound	00:36:23	0
3430487	99	48	43,4	cyclictest	3430358	-21	kworker/u8:1+events_unbound	19:26:23	0
3430487	99	48	39,7	cyclictest	3655841	-21	diskstats	22:56:09	0
3430491	99	47	42,4	cyclictest	3670088	-21	kworker/u8:3+events_unbound	23:11:20	1
3430491	99	47	42,4	cyclictest	3610411	-21	kworker/u8:2+flush-8:0	22:31:19	1
3430491	99	47	42,3	cyclictest	3551041	-21	kworker/u8:1+flush-8:0	21:16:23	1
3430491	99	47	42,3	cyclictest	3430358	-21	kworker/u8:1+events_unbound	20:11:27	1
3430491	99	47	41,5	cyclictest	3453228	-21	kworker/u8:2+flush-8:0	19:56:20	1
3430491	99	47	40,5	cyclictest	3675527	-21	kworker/u8:0+flush-8:0	23:51:21	1
3430491	99	47	40,5	cyclictest	3675527	-21	kworker/u8:0+flush-8:0	23:51:21	1
3430487	99	47	43,3	cyclictest	3675527	-21	kworker/u8:0+events_unbound	23:51:13	0
3430487	99	47	43,3	cyclictest	3675527	-21	kworker/u8:0+events_unbound	23:51:13	0
3430487	99	47	43,3	cyclictest	3561482	-21	kworker/u8:0+events_unbound	21:26:24	0
3430487	99	47	43,3	cyclictest	3420780	-21	kworker/u8:0+events_unbound	19:11:27	0
3430487	99	47	43,3	cyclictest	3420780	-21	kworker/u8:0+events_unbound	19:11:27	0
3430487	99	47	42,4	cyclictest	3670088	-21	kworker/u8:3+events_unbound	23:21:26	0
3430487	99	47	42,4	cyclictest	3453228	-21	kworker/u8:2+events_unbound	20:26:13	0
3430491	99	46	42,3	cyclictest	3675527	-21	kworker/u8:0+events_unbound	23:16:18	1
3430491	99	46	41,4	cyclictest	3430358	-21	kworker/u8:1+flush-8:0	19:16:21	1
3430491	99	46	41,4	cyclictest	3430358	-21	kworker/u8:1+flush-8:0	19:16:21	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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