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 #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 Thu Jul 09, 2026 12:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3494423	2	264	0,6	sleep3	0	-21	swapper/3	12:05:22	3
3356362	2	195	0,2	sleep3	75	-21	kworker/3:1-events	09:50:14	3
3193402	99	160	156,2	cyclictest	3424859	-21	gpgv	11:00:00	2
3442265	2	82	0,2	chrt	75	-21	kworker/3:1+events	11:15:14	3
3342855	2	70	0,3	sleep3	75	-21	kworker/3:1+mm_percpu_wq	09:35:13	3
3193398	99	64	61,2	cyclictest	0	-21	swapper/1	11:00:00	1
3193393	99	63	58,3	cyclictest	3198512	-21	munin-node	07:15:05	0
3410965	2	62	0,4	chrt	75	-21	kworker/3:1-events	10:45:13	3
3389397	2	61	0,3	chrt	3389402	-21	unixbench_singl	10:20:26	0
3193398	99	60	49,8	cyclictest	3214452	-21	ntpq	07:25:19	1
3193393	99	59	53,5	cyclictest	3193263	-21	kworker/u8:2+flush-8:0	07:30:21	0
3193402	99	58	47,8	cyclictest	1704890	-21	systemd-journal	09:15:00	2
3193398	99	58	52,4	cyclictest	3390030	-21	kworker/u8:1+flush-8:0	11:05:21	1
3230048	2	56	0,3	chrt	75	-21	kworker/3:1-events	07:40:25	3
3193398	99	56	46,7	cyclictest	3255674	-21	latency_hist	08:10:01	1
3193398	99	55	45,8	cyclictest	3439056	-21	ntpq	11:10:17	1
3193393	99	55	38,15	cyclictest	3424870	-21	latency_hist	11:00:01	0
3193398	99	54	48,5	cyclictest	3193263	-21	kworker/u8:2+flush-8:0	07:20:20	1
3193398	99	54	47,5	cyclictest	3197401	-21	ntpq	07:10:19	1
3193398	99	52	47,4	cyclictest	3193263	-21	kworker/u8:2+events_unbound	07:35:19	1
3193393	99	52	45,5	cyclictest	3193263	-21	kworker/u8:2+flush-8:0	07:20:19	0
3245949	2	51	0,13	sleep1	0	-21	swapper/1	08:00:00	1
3193398	99	51	45,4	cyclictest	3480525	-21	kworker/u8:3+flush-8:0	12:00:17	1
3193398	99	51	45,4	cyclictest	3424604	-21	apt-get	11:00:03	1
3193398	99	51	45,4	cyclictest	3392184	-21	kworker/u8:4+events_unbound	10:30:18	1
3193398	99	50	46,3	cyclictest	3193263	-21	kworker/u8:2+flush-8:0	08:20:24	1
3193398	99	50	45,3	cyclictest	3285676	-21	kworker/u8:1+flush-8:0	08:45:20	1
3193398	99	50	43,5	cyclictest	3138960	-21	kworker/u8:3+flush-8:0	08:00:21	1
3193398	99	50	40,8	cyclictest	3523701	-21	ntpq	12:35:17	1
3193398	99	50	40,8	cyclictest	3523701	-21	ntpq	12:35:16	1
3193393	99	50	38,9	cyclictest	3300490	-21	cp	08:55:02	0
3193393	99	50	38,9	cyclictest	3300490	-21	cp	08:55:01	0
3193398	99	49	43,5	cyclictest	3390030	-21	kworker/u8:1+flush-8:0	10:35:18	1
3193398	99	49	43,4	cyclictest	3390030	-21	kworker/u8:1+events_unbound	11:20:10	1
3193398	99	49	36,10	cyclictest	1704890	-21	systemd-journal	10:25:00	1
3193402	99	48	30,15	cyclictest	1704890	-21	systemd-journal	12:05:19	2
3193398	99	48	44,3	cyclictest	3505058	-21	kworker/u8:0+events_unbound	12:30:22	1
3193398	99	48	44,3	cyclictest	3138960	-21	kworker/u8:3+flush-8:0	07:45:24	1
3193398	99	48	41,5	cyclictest	3193263	-21	kworker/u8:2+flush-8:0	08:25:21	1
3193402	99	47	38,7	cyclictest	1704890	-21	systemd-journal	12:00:01	2
3193398	99	47	40,6	cyclictest	3392184	-21	kworker/u8:4+events_unbound	12:15:17	1
3193398	99	47	39,5	cyclictest	3285676	-21	kworker/u8:1+flush-8:0	09:40:22	1
3193398	99	45	39,4	cyclictest	3390030	-21	kworker/u8:1+events_unbound	10:40:20	1
3193398	99	44	39,4	cyclictest	3193263	-21	kworker/u8:2+flush-8:0	07:30:21	1
3193398	99	44	39,4	cyclictest	3178721	-21	kworker/u8:0+events_unbound	07:15:10	1
3193398	99	44	38,5	cyclictest	3138960	-21	kworker/u8:3+flush-8:0	08:10:22	1
3193398	99	44	35,7	cyclictest	1704890	-21	systemd-journal	11:20:01	1
3193402	99	43	27,14	cyclictest	3349172	-21	needreboot	09:40:15	2
3193398	99	43	39,3	cyclictest	3340202	-21	kworker/u8:3+flush-8:0	10:10:21	1
3193398	99	43	39,3	cyclictest	3193263	-21	kworker/u8:2+events_unbound	09:10:20	1
3193398	99	43	35,6	cyclictest	3340202	-21	kworker/u8:3+flush-8:0	09:45:18	1
3193402	99	42	31,8	cyclictest	1704890	-21	systemd-journal	08:45:00	2
3193402	99	42	31,8	cyclictest	1704890	-21	systemd-journal	08:44:59	2
3193398	99	42	36,4	cyclictest	3193263	-21	kworker/u8:2+events_unbound	08:15:18	1
3193398	99	42	35,5	cyclictest	3365339	-21	apt-get	10:00:03	1
3193398	99	42	35,5	cyclictest	3305121	-21	kworker/u8:3+flush-8:0	09:00:18	1
3193398	99	42	33,7	cyclictest	3478976	-21	ntpq	11:50:19	1
3193393	99	42	34,6	cyclictest	1704890	-21	systemd-journal	07:54:59	0
3193393	99	41	33,6	cyclictest	3350172	-21	latency_hist	09:45:00	0
3193398	99	40	36,3	cyclictest	3285676	-21	kworker/u8:1+events_unbound	09:50:14	1
3193398	99	40	35,3	cyclictest	3480525	-21	kworker/u8:3+events_unbound	11:55:14	1
3193398	99	40	34,5	cyclictest	3340202	-21	kworker/u8:3+events_unbound	09:35:21	1
3193398	99	40	34,4	cyclictest	3480525	-21	kworker/u8:3+events_unbound	12:10:13	1
3193398	99	40	33,5	cyclictest	3193263	-21	kworker/u8:2+events_unbound	09:05:22	1
3193398	99	40	33,5	cyclictest	3193263	-21	kworker/u8:2+events_unbound	08:30:18	1
3193393	99	40	34,4	cyclictest	3305121	-21	kworker/u8:3+events_unbound	09:10:09	0
3193402	99	39	30,7	cyclictest	1704890	-21	systemd-journal	09:25:01	2
3193402	99	39	22,15	cyclictest	3485413	-21	fschecks_count	12:00:06	2
3193393	99	39	33,4	cyclictest	3193263	-21	kworker/u8:2+flush-8:0	08:30:26	0
3193393	99	39	32,6	cyclictest	3390030	-21	kworker/u8:1+flush-8:0	11:05:08	0
3193393	99	39	30,6	cyclictest	3494879	-21	latency_hist	12:10:01	0
3193393	99	39	30,6	cyclictest	1704890	-21	systemd-journal	10:40:00	0
3193402	99	38	22,14	cyclictest	3444533	-21	unixbench_singl	11:15:26	2
3193402	99	38	22,14	cyclictest	3295618	-21	aten2_r5power_e	08:50:06	2
3193402	99	38	22,14	cyclictest	3295618	-21	aten2_r5power_e	08:50:06	2
3193402	99	38	16,2	cyclictest	0	-21	swapper/2	08:00:00	2
3193398	99	38	34,3	cyclictest	3360115	-21	kworker/u8:2+events_unbound	10:20:00	1
3193393	99	38	33,4	cyclictest	3193263	-21	kworker/u8:2+flush-8:0	07:35:21	0
3193402	99	37	2,13	cyclictest	3335510	-21	apt-get	09:30:06	2
3193402	99	37	16,7	cyclictest	1704890	-21	systemd-journal	10:35:00	2
3193398	99	37	31,4	cyclictest	3392184	-21	kworker/u8:4+events_unbound	10:50:07	1
3193393	99	37	28,6	cyclictest	3505036	-21	/usr/sbin/munin	12:20:18	0
3193402	99	36	25,9	cyclictest	1704890	-21	systemd-journal	09:17:16	2
3193398	99	36	32,3	cyclictest	3419246	-21	kworker/u8:2+flush-8:0	11:25:20	1
3193398	99	36	31,4	cyclictest	3305121	-21	kworker/u8:3+events_unbound	09:15:26	1
3193398	99	36	30,4	cyclictest	3193263	-21	kworker/u8:2+events_unbound	09:30:19	1
3193398	99	36	29,5	cyclictest	3470260	-21	apt-get	11:45:05	1
3193393	99	36	32,3	cyclictest	3480525	-21	kworker/u8:3+flush-8:0	12:10:20	0
3193393	99	36	26,7	cyclictest	3364109	-21	ntpq	09:55:18	0
3193402	99	35	21,12	cyclictest	3255273	-21	unixbench_singl	08:05:26	2
3193398	99	35	31,3	cyclictest	3285676	-21	kworker/u8:1+flush-8:0	08:50:09	1
3193398	99	35	31,3	cyclictest	3285676	-21	kworker/u8:1+flush-8:0	08:50:08	1
3193393	99	35	30,4	cyclictest	3305467	-21	sendmail	09:00:00	0
3193393	99	35	30,3	cyclictest	3285676	-21	kworker/u8:1+events_unbound	08:45:18	0
3477079	2	34	0,9	sleep3	45	1	irq_work/3	11:50:14	3
3193402	99	34	24,8	cyclictest	3225668	-21	cat	07:40:01	2
3193402	99	34	21,11	cyclictest	3231186	-21	fschecks_count	07:45:09	2
3193402	99	34	20,12	cyclictest	3515173	-21	cpuspeed_turbos	12:30:08	2
3193402	99	34	19,12	cyclictest	0	-21	swapper/2	10:39:59	2
3193402	99	34	1,11	cyclictest	3478988	-21	ntpq	11:50:20	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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