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 Fri Jun 19, 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
3476355	2	104	0,3	chrt	45	1	irq_work/3	09:50:40	3
3340342	2	102	0,3	chrt	75	-21	kworker/3:1-events	07:35:31	3
3311399	99	74	63,8	cyclictest	3416666	-21	ntpq	08:50:33	0
3311402	99	71	57,9	cyclictest	1704890	-21	systemd-journal	12:20:39	1
3311399	99	70	57,11	cyclictest	3272026	-21	kworker/u8:3+flush-8:0	08:00:37	0
3311402	99	64	48,13	cyclictest	3417854	-21	/usr/sbin/munin	08:55:33	1
3311399	99	64	51,10	cyclictest	3491064	-21	ntpq	10:05:35	0
3311402	99	62	51,9	cyclictest	3322201	-21	ntpq	07:15:39	1
3311402	99	62	51,8	cyclictest	3505947	-21	ntpq	10:20:36	1
3311402	99	62	47,10	cyclictest	1704890	-21	systemd-journal	08:45:30	1
3311406	99	61	55,4	cyclictest	3375051	-21	kworker/u8:3+flush-8:0	08:55:37	2
3311399	99	61	52,6	cyclictest	3338408	-21	kworker/u8:0+flush-8:0	07:35:27	0
3311399	99	61	50,8	cyclictest	3625266	-21	ntpq	12:20:36	0
3311402	99	59	49,8	cyclictest	1704890	-21	systemd-journal	12:00:01	1
3311399	99	59	49,8	cyclictest	3332323	-21	ntpq	07:25:36	0
3311399	99	59	49,7	cyclictest	3462090	-21	apt-get	09:40:00	0
3311399	99	58	47,8	cyclictest	1704890	-21	systemd-journal	09:25:30	0
3311399	99	58	44,5	cyclictest	3282938	-21	kworker/u8:2+flush-8:0	07:20:37	0
3311399	99	57	51,5	cyclictest	3419838	-21	kworker/u8:1+events_unbound	09:40:38	0
3311399	99	57	46,8	cyclictest	3580830	-21	ntpq	11:35:35	0
3311406	99	56	51,3	cyclictest	3282938	-21	kworker/u8:2+flush-8:0	07:45:41	2
3311402	99	56	48,5	cyclictest	3590622	-21	ntpq	11:45:32	1
3311402	99	56	47,6	cyclictest	3605468	-21	ntpq	12:00:35	1
3311402	99	56	42,11	cyclictest	3571720	-21	/usr/sbin/munin	11:30:33	1
3311402	99	56	33,12	cyclictest	3387049	-21	ntpq	08:20:33	1
3311399	99	56	52,2	cyclictest	3282938	-21	kworker/u8:2+flush-8:0	08:35:45	0
3311406	99	54	49,4	cyclictest	3367338	-21	kworker/u8:1+flush-8:0	08:05:34	2
3311406	99	54	48,4	cyclictest	3545841	-21	kworker/u8:1+events_unbound	11:05:38	2
3311399	99	54	48,4	cyclictest	3282938	-21	kworker/u8:2+flush-8:0	07:40:32	0
3311399	99	54	44,7	cyclictest	1704890	-21	systemd-journal	08:30:01	0
3311399	99	54	43,9	cyclictest	3500980	-21	ntpq	10:15:35	0
3311399	99	54	43,7	cyclictest	3282938	-21	kworker/u8:2+flush-8:0	08:10:36	0
3311402	99	53	42,9	cyclictest	3555683	-21	ntpq	11:10:33	1
3311399	99	53	47,4	cyclictest	3556840	-21	kworker/u8:0+events_unbound	11:40:41	0
3311399	99	53	47,4	cyclictest	3556840	-21	kworker/u8:0+events_unbound	11:40:41	0
3311399	99	53	45,5	cyclictest	3375051	-21	kworker/u8:3+events_unbound	09:30:40	0
3311406	99	52	43,7	cyclictest	3541749	-21	awk	11:00:00	2
3311399	99	52	41,8	cyclictest	3481141	-21	ntpq	09:55:35	0
3311406	99	51	46,4	cyclictest	3375051	-21	kworker/u8:3+flush-8:0	08:50:40	2
3311406	99	51	45,4	cyclictest	3476782	-21	kworker/u8:0+flush-8:0	10:50:40	2
3311402	99	51	41,7	cyclictest	3640310	-21	ntpq	12:35:33	1
3311406	99	50	45,3	cyclictest	3493894	-21	kworker/u8:3+flush-8:0	10:10:36	2
3311406	99	50	45,3	cyclictest	3419838	-21	kworker/u8:1+flush-8:0	09:50:41	2
3311406	99	50	42,6	cyclictest	3561664	-21	cat	11:20:01	2
3311399	99	50	44,4	cyclictest	3282938	-21	kworker/u8:2+flush-8:0	09:20:30	0
3311399	99	50	43,5	cyclictest	3296187	-21	kworker/u8:0+flush-8:0	07:10:40	0
3311399	99	50	42,6	cyclictest	3325750	-21	kworker/u8:1+flush-8:0	07:30:33	0
3311399	99	50	39,9	cyclictest	3615462	-21	ntpq	12:10:40	0
3311406	99	49	44,3	cyclictest	3563517	-21	kworker/u8:3+flush-8:0	11:25:26	2
3311406	99	48	44,3	cyclictest	3606612	-21	kworker/u8:1+flush-8:0	12:35:37	2
3311406	99	48	42,4	cyclictest	3493894	-21	kworker/u8:3+flush-8:0	10:45:36	2
3311399	99	47	41,4	cyclictest	3569201	-21	kworker/u8:4+flush-8:0	11:30:39	0
3311406	99	46	41,4	cyclictest	3556840	-21	kworker/u8:0+flush-8:0	12:25:35	2
3311406	99	46	41,4	cyclictest	3282938	-21	kworker/u8:2+events_unbound	07:15:05	2
3311406	99	46	41,3	cyclictest	3556840	-21	kworker/u8:0+flush-8:0	12:30:35	2
3311402	99	46	35,9	cyclictest	1704890	-21	systemd-journal	09:50:40	1
3311406	99	45	37,6	cyclictest	3383037	-21	awk	08:20:00	2
3311402	99	45	36,7	cyclictest	3437403	-21	latency_hist	09:15:01	1
3311402	99	45	36,7	cyclictest	3437403	-21	latency_hist	09:15:00	1
3311399	99	45	38,5	cyclictest	3375051	-21	kworker/u8:3+events_unbound	10:00:34	0
3311399	99	45	36,7	cyclictest	3375051	-21	kworker/u8:3+events_unbound	09:15:38	0
3311406	99	44	33,9	cyclictest	3565615	-21	ntpq	11:20:35	2
3311402	99	44	35,6	cyclictest	3373126	-21	apt-get	08:10:21	1
3311402	99	44	33,7	cyclictest	1704890	-21	systemd-journal	12:31:40	1
3311399	99	43	37,4	cyclictest	3556840	-21	kworker/u8:0+flush-8:0	11:20:41	0
3311399	99	43	37,4	cyclictest	3521473	-21	kworker/u8:2+events_unbound	10:40:01	0
3311399	99	43	37,4	cyclictest	3493894	-21	kworker/u8:3+events_unbound	10:40:28	0
3311402	99	42	34,6	cyclictest	3537051	-21	/usr/sbin/munin	10:55:33	1
3311402	99	42	27,12	cyclictest	3328538	-21	apt-get	07:25:22	1
3311402	99	42	14,14	cyclictest	0	-21	swapper/1	12:05:39	1
3311399	99	42	37,4	cyclictest	3545841	-21	kworker/u8:1+flush-8:0	11:05:41	0
3311399	99	42	36,4	cyclictest	3272026	-21	kworker/u8:3+flush-8:0	07:45:25	0
3601964	2	41	0,2	sleep2	0	-21	swapper/2	12:00:25	2
3311406	99	41	36,3	cyclictest	3493894	-21	kworker/u8:3+flush-8:0	11:10:25	2
3311406	99	41	32,6	cyclictest	3507204	-21	cat	10:25:01	2
3311402	99	41	33,5	cyclictest	3383039	-21	latency_hist	08:20:01	1
3311402	99	40	20,16	cyclictest	1704890	-21	systemd-journal	11:26:41	1
3311399	99	40	34,4	cyclictest	3606612	-21	kworker/u8:1+events_unbound	12:35:32	0
3311399	99	40	33,4	cyclictest	3282938	-21	kworker/u8:2+flush-8:0	09:05:40	0
3311399	99	40	31,6	cyclictest	3591554	-21	latency_hist	11:50:00	0
3311406	99	39	34,3	cyclictest	3476782	-21	kworker/u8:0+events_unbound	11:00:27	2
3311402	99	39	31,6	cyclictest	3419838	-21	kworker/u8:1+flush-8:0	09:00:39	1
3311402	99	39	30,6	cyclictest	3527185	-21	/usr/sbin/munin	10:45:36	1
3491261	2	38	0,2	sleep2	0	-21	swapper/2	10:05:40	2
3438030	2	38	0,1	sleep1	3438026	-21	fschecks_time	09:15:26	1
3311406	99	38	33,4	cyclictest	3375051	-21	kworker/u8:3+flush-8:0	08:50:01	2
3311399	99	38	33,4	cyclictest	3375051	-21	kworker/u8:3+flush-8:0	08:30:39	0
3311399	99	38	33,3	cyclictest	3476782	-21	kworker/u8:0+events_unbound	10:45:24	0
3311399	99	38	31,5	cyclictest	3375051	-21	kworker/u8:3+events_unbound	09:49:45	0
3311402	99	37	14,14	cyclictest	42	1	rcuog/2	09:37:24	1
3311399	99	37	30,5	cyclictest	3569201	-21	kworker/u8:4+events_unbound	12:00:24	0
3311399	99	37	29,6	cyclictest	3476782	-21	kworker/u8:0+events_unbound	10:50:23	0
3311399	99	37	29,6	cyclictest	3403330	-21	diskstats	08:40:27	0
3311399	99	37	22,9	cyclictest	3563517	-21	kworker/u8:3+flush-8:0	11:55:23	0
3311402	99	36	3,25	cyclictest	0	-21	swapper/1	08:40:23	1
3311402	99	36	26,8	cyclictest	3521086	-21	ntpq	10:35:36	1
3311399	99	36	31,4	cyclictest	3493894	-21	kworker/u8:3+flush-8:0	11:10:33	0
3311399	99	36	31,3	cyclictest	3477148	-21	systemd-run	09:55:00	0
3311399	99	36	29,5	cyclictest	3556840	-21	kworker/u8:0+flush-8:0	11:25:38	0
3311399	99	36	26,8	cyclictest	3626663	-21	/usr/sbin/munin	12:25:33	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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