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 Sun Jun 28, 2026 00:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3620353	2	176	0,2	sleep1	28	1	rcuc/1	20:55:21	1
3676886	2	89	0,5	chrt	0	-21	swapper/3	21:50:25	3
3511883	99	71	65,4	cyclictest	3777219	-21	kworker/u8:1+events_unbound	23:50:35	1
3511883	99	69	61,6	cyclictest	3491366	-21	kworker/u8:0+flush-8:0	19:15:03	1
3511883	99	63	57,4	cyclictest	3752517	-21	kworker/u8:3+events_unbound	23:15:33	1
3511883	99	59	55,3	cyclictest	3568473	-21	kworker/u8:1+events_unbound	20:40:01	1
3511883	99	59	52,5	cyclictest	3653408	-21	kworker/u8:2+events_unbound	23:40:28	1
3511883	99	58	50,6	cyclictest	3506812	-21	kworker/u8:1+events_unbound	19:40:28	1
3745949	2	57	0,1	sleep0	3745955	-21	kthreadcore	23:00:25	0
3511883	99	57	52,4	cyclictest	3568473	-21	kworker/u8:1+events_unbound	20:25:27	1
3511883	99	57	50,5	cyclictest	3653408	-21	kworker/u8:2+events_unbound	22:50:29	1
3511880	99	57	38,16	cyclictest	3627507	-21	ntpq	21:00:26	0
3532622	2	56	0,2	chrt	0	-21	swapper/0	19:25:26	0
3511883	99	56	48,6	cyclictest	3653408	-21	kworker/u8:2+flush-8:0	22:35:27	1
3511880	99	56	23,21	cyclictest	0	-21	swapper/0	19:42:25	0
3511885	99	54	43,9	cyclictest	3707039	-21	ntpq	22:20:28	2
3511883	99	54	49,4	cyclictest	3653408	-21	kworker/u8:2+events_unbound	00:30:30	1
3511883	99	54	49,4	cyclictest	3653408	-21	kworker/u8:2+events_unbound	00:30:30	1
3511883	99	54	49,4	cyclictest	3577545	-21	kworker/u8:0+flush-8:0	20:20:26	1
3511883	99	53	43,7	cyclictest	1704890	-21	systemd-journal	20:35:01	1
3511880	99	53	46,5	cyclictest	3653408	-21	kworker/u8:2+flush-8:0	23:45:31	0
3511883	99	51	47,3	cyclictest	3766627	-21	kworker/u8:0+flush-8:0	00:15:28	1
3511883	99	51	45,4	cyclictest	3752517	-21	kworker/u8:3+flush-8:0	23:20:28	1
3511883	99	50	45,4	cyclictest	3597890	-21	kworker/u8:3+events_unbound	21:55:29	1
3511883	99	50	44,5	cyclictest	3766627	-21	kworker/u8:0+flush-8:0	00:20:30	1
3511883	99	49	44,3	cyclictest	3506812	-21	kworker/u8:1+events_unbound	19:10:30	1
3511883	99	49	43,5	cyclictest	3603699	-21	kworker/u8:0+flush-8:0	21:35:25	1
3511883	99	49	43,4	cyclictest	3528687	-21	kworker/u8:3+flush-8:0	20:00:23	1
3511885	99	48	19,15	cyclictest	3554163	-21	fschecks_count	19:50:18	2
3511883	99	48	44,3	cyclictest	3648240	-21	kworker/u8:1+flush-8:0	21:25:30	1
3511883	99	48	43,4	cyclictest	3668069	-21	kworker/u8:1+flush-8:0	21:45:30	1
3511883	99	48	43,4	cyclictest	3528687	-21	kworker/u8:3+flush-8:0	19:45:29	1
3511883	99	48	43,3	cyclictest	3826151	-21	kworker/u8:3+flush-8:0	00:35:35	1
3511883	99	48	43,3	cyclictest	3826151	-21	kworker/u8:3+flush-8:0	00:35:34	1
3511883	99	48	41,5	cyclictest	3597890	-21	kworker/u8:3+events_unbound	21:05:29	1
3511883	99	47	41,4	cyclictest	3777219	-21	kworker/u8:1+flush-8:0	23:45:17	1
3511883	99	47	41,4	cyclictest	3766627	-21	kworker/u8:0+flush-8:0	00:00:27	1
3511883	99	47	41,4	cyclictest	3506812	-21	kworker/u8:1+flush-8:0	19:25:18	1
3511880	99	47	36,9	cyclictest	3682919	-21	apt-get	22:00:01	0
3511883	99	46	42,3	cyclictest	3597890	-21	kworker/u8:3+flush-8:0	21:20:35	1
3511883	99	46	42,3	cyclictest	3577545	-21	kworker/u8:0+events_unbound	20:15:01	1
3511883	99	46	42,3	cyclictest	3568473	-21	kworker/u8:1+events_unbound	20:45:32	1
3511883	99	46	41,4	cyclictest	3653408	-21	kworker/u8:2+flush-8:0	00:10:30	1
3511883	99	46	41,4	cyclictest	3653408	-21	kworker/u8:2+events_unbound	22:15:29	1
3511883	99	46	40,5	cyclictest	3623722	-21	kworker/u8:2+flush-8:0	21:10:21	1
3511883	99	46	40,4	cyclictest	3459664	-21	kworker/u8:2+events_unbound	19:30:29	1
3511883	99	45	41,3	cyclictest	3732691	-21	kworker/u8:1+events_unbound	22:55:32	1
3511883	99	45	39,5	cyclictest	3623722	-21	kworker/u8:2+flush-8:0	21:15:27	1
3511883	99	45	39,4	cyclictest	3653408	-21	kworker/u8:2+events_unbound	22:00:30	1
3511883	99	45	39,4	cyclictest	3597890	-21	kworker/u8:3+flush-8:0	22:05:29	1
3511880	99	45	40,4	cyclictest	3826151	-21	kworker/u8:3+events_unbound	00:25:32	0
3511880	99	45	37,5	cyclictest	1704890	-21	systemd-journal	19:45:25	0
3511880	99	45	35,7	cyclictest	3797070	-21	true	23:55:00	0
3511880	99	45	18,16	cyclictest	3757445	-21	cron	23:15:01	0
3511883	99	44	40,3	cyclictest	3698203	-21	kworker/u8:0+events_unbound	22:45:33	1
3511883	99	44	40,3	cyclictest	3568473	-21	kworker/u8:1+events_unbound	20:40:28	1
3511883	99	44	38,4	cyclictest	3653408	-21	kworker/u8:2+events_unbound	23:55:28	1
3511880	99	44	26,16	cyclictest	3519299	-21	fschecks_time	19:15:21	0
3511880	99	44	2,20	cyclictest	0	-21	swapper/0	20:00:29	0
3511880	99	44	1,32	cyclictest	3523950	-21	/usr/sbin/munin	19:20:14	0
3511880	99	44	1,29	cyclictest	589	-21	runrttasks	20:30:15	0
3511883	99	43	38,3	cyclictest	3766627	-21	kworker/u8:0+flush-8:0	23:30:34	1
3511883	99	43	35,6	cyclictest	3528687	-21	kworker/u8:3+events_unbound	19:50:29	1
3511880	99	43	26,15	cyclictest	3666347	-21	kthreadcore	21:40:25	0
3511880	99	42	35,5	cyclictest	3653408	-21	kworker/u8:2+events_unbound	22:00:28	0
3511880	99	42	19,18	cyclictest	0	-21	swapper/0	19:30:03	0
3511885	99	41	36,4	cyclictest	3653408	-21	kworker/u8:2+flush-8:0	21:50:29	2
3511880	99	41	23,15	cyclictest	1704890	-21	systemd-journal	21:45:24	0
3511885	99	40	24,14	cyclictest	3693362	-21	aten2_r5power_e	22:10:16	2
3511880	99	40	3,23	cyclictest	0	-21	swapper/0	23:59:46	0
3511883	99	39	36,2	cyclictest	3578609	-21	apt-get	20:15:13	1
3511883	99	39	35,3	cyclictest	3698203	-21	kworker/u8:0+events_unbound	22:25:27	1
3511883	99	39	35,3	cyclictest	3698203	-21	kworker/u8:0+events_unbound	22:25:26	1
3511883	99	39	32,6	cyclictest	3732691	-21	kworker/u8:1+events_unbound	23:05:29	1
3511880	99	39	31,6	cyclictest	3712401	-21	grep	22:25:34	0
3511880	99	39	31,6	cyclictest	3712401	-21	grep	22:25:34	0
3511880	99	39	2,24	cyclictest	0	-21	swapper/0	22:55:18	0
3511880	99	39	2,23	cyclictest	0	-21	swapper/0	23:30:58	0
3511880	99	39	18,18	cyclictest	3608184	-21	latency_hist	20:45:00	0
3511880	99	39	1,21	cyclictest	589	-21	runrttasks	20:15:14	0
3511880	99	39	0,38	cyclictest	3717721	-21	sshd	22:34:24	0
3511883	99	38	34,3	cyclictest	3653408	-21	kworker/u8:2+flush-8:0	23:35:16	1
3511883	99	38	32,4	cyclictest	3807475	-21	apt-get	00:05:14	1
3511883	99	38	32,4	cyclictest	3597890	-21	kworker/u8:3+events_unbound	21:00:29	1
3511880	99	38	7,23	cyclictest	589	-21	runrttasks	19:51:46	0
3511880	99	38	2,28	cyclictest	583	-21	snmpd	00:35:16	0
3511880	99	38	2,28	cyclictest	583	-21	snmpd	00:35:15	0
3511880	99	38	2,23	cyclictest	0	-21	swapper/0	20:08:42	0
3511880	99	38	19,17	cyclictest	0	-21	swapper/0	21:54:59	0
3511880	99	38	11,18	cyclictest	0	-21	swapper/0	19:10:30	0
3511885	99	37	22,13	cyclictest	3588601	-21	aten2_r5power_c	20:25:16	2
3511885	99	37	21,14	cyclictest	3752984	-21	cpuspeed_turbos	23:10:16	2
3511883	99	37	33,3	cyclictest	3766627	-21	kworker/u8:0+flush-8:0	23:25:32	1
3511883	99	37	33,3	cyclictest	3653408	-21	kworker/u8:2+flush-8:0	22:20:32	1
3511883	99	37	33,3	cyclictest	3653408	-21	kworker/u8:2+events_unbound	22:40:18	1
3511883	99	37	32,4	cyclictest	3506812	-21	kworker/u8:1+events_unbound	19:40:00	1
3511883	99	37	31,5	cyclictest	3653408	-21	kworker/u8:2+events_unbound	21:40:28	1
3511883	99	37	26,4	cyclictest	3506812	-21	kworker/u8:1+events_unbound	19:20:29	1
3511880	99	37	9,20	cyclictest	589	-21	runrttasks	23:07:05	0
3511880	99	37	9,20	cyclictest	589	-21	runrttasks	22:51:04	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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