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 Apr 24, 2026 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
132058	99	64	59,4	cyclictest	194230	-21	kworker/u8:2+events_unbound	20:31:26	1
132058	99	62	58,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	00:31:20	1
132060	99	61	52,7	cyclictest	451807	-21	cp	00:29:59	2
132058	99	60	56,3	cyclictest	318089	-21	kworker/u8:3+events_unbound	22:21:15	1
132058	99	60	51,6	cyclictest	347491	-21	latency_hist	22:45:01	1
132058	99	59	55,3	cyclictest	223693	-21	kworker/u8:1+events_unbound	20:46:23	1
132058	99	58	54,3	cyclictest	194230	-21	kworker/u8:2+events_unbound	21:06:23	1
132058	99	57	53,3	cyclictest	411558	-21	kworker/u8:3+events_unbound	00:01:09	1
132058	99	57	53,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	00:11:26	1
132058	99	57	53,3	cyclictest	213803	-21	kworker/u8:3+events_unbound	21:21:27	1
132058	99	57	53,3	cyclictest	213803	-21	kworker/u8:3+events_unbound	21:21:27	1
132058	99	57	53,3	cyclictest	194230	-21	kworker/u8:2+events_unbound	20:26:23	1
132058	99	57	52,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	23:11:13	1
132058	99	56	52,3	cyclictest	318089	-21	kworker/u8:3+events_unbound	22:16:10	1
132058	99	56	51,4	cyclictest	273243	-21	kworker/u8:1+events_unbound	21:41:14	1
132054	99	56	45,8	cyclictest	362935	-21	diskstats	23:01:11	0
132058	99	55	51,3	cyclictest	381276	-21	kworker/u8:0+events_unbound	23:51:22	1
132058	99	55	51,3	cyclictest	132166	-21	kworker/u8:0+events_unbound	20:01:10	1
132058	99	55	49,4	cyclictest	112353	-21	kworker/u8:2+events_unbound	19:31:23	1
132058	99	54	50,3	cyclictest	158771	-21	kworker/u8:1+events_unbound	19:56:23	1
132058	99	54	50,3	cyclictest	132166	-21	kworker/u8:0+events_unbound	19:36:18	1
132058	99	54	49,4	cyclictest	99894	-21	kworker/u8:1+events_unbound	19:16:11	1
132054	99	54	46,6	cyclictest	194230	-21	kworker/u8:2+flush-8:0	20:11:11	0
132058	99	53	49,3	cyclictest	371921	-21	kworker/u8:1+events_unbound	23:16:09	1
132058	99	53	49,3	cyclictest	293056	-21	kworker/u8:1+events_unbound	21:51:13	1
132058	99	53	49,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	23:56:12	1
132058	99	53	49,3	cyclictest	213803	-21	kworker/u8:3+events_unbound	22:01:27	1
132058	99	53	49,3	cyclictest	158771	-21	kworker/u8:1+events_unbound	20:06:23	1
132058	99	52	42,7	cyclictest	336777	-21	ntpq	22:31:21	1
132054	99	52	44,6	cyclictest	132166	-21	kworker/u8:0+flush-8:0	20:06:10	0
132058	99	51	47,3	cyclictest	318089	-21	kworker/u8:3+events_unbound	23:01:08	1
132058	99	51	47,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	22:51:11	1
132058	99	51	47,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	00:16:08	1
132058	99	51	47,3	cyclictest	213803	-21	kworker/u8:3+events_unbound	21:16:11	1
132058	99	51	47,3	cyclictest	213803	-21	kworker/u8:3+events_unbound	21:16:11	1
132054	99	51	42,7	cyclictest	377438	-21	/usr/sbin/munin	23:16:19	0
132054	99	51	41,7	cyclictest	280	-21	systemd-journal	21:45:01	0
132054	99	50	41,6	cyclictest	456899	-21	latency_hist	00:35:01	0
132060	99	49	41,6	cyclictest	280	-21	systemd-journal	20:05:00	2
132058	99	49	45,3	cyclictest	213803	-21	kworker/u8:3+events_unbound	21:36:15	1
132058	99	49	45,3	cyclictest	132166	-21	kworker/u8:0+events_unbound	20:21:08	1
132058	99	49	45,3	cyclictest	132166	-21	kworker/u8:0+events_unbound	20:11:14	1
399640	2	48	0,2	sleep3	48	1	ktimers/3	23:36:16	3
132058	99	48	44,3	cyclictest	396773	-21	kworker/u8:1+events_unbound	23:41:09	1
132058	99	48	44,3	cyclictest	318089	-21	kworker/u8:3+events_unbound	22:26:25	1
132058	99	48	44,3	cyclictest	213803	-21	kworker/u8:3+events_unbound	21:31:10	1
132058	99	48	44,3	cyclictest	213803	-21	kworker/u8:3+events_unbound	20:36:23	1
132058	99	48	44,3	cyclictest	132166	-21	kworker/u8:0+events_unbound	19:46:13	1
132054	99	48	37,9	cyclictest	280	-21	systemd-journal	21:00:19	0
132058	99	47	43,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	21:56:12	1
132058	99	47	43,3	cyclictest	223693	-21	kworker/u8:1+events_unbound	21:01:08	1
132058	99	47	43,3	cyclictest	194230	-21	kworker/u8:2+events_unbound	20:16:12	1
132054	99	47	40,5	cyclictest	317608	-21	apt-get	22:15:01	0
132058	99	46	42,3	cyclictest	194230	-21	kworker/u8:2+events_unbound	20:51:29	1
132058	99	46	41,4	cyclictest	287019	-21	kworker/u8:2+events_unbound	23:21:11	1
132054	99	46	36,7	cyclictest	208830	-21	latency_hist	20:25:01	0
132058	99	45	41,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	23:36:29	1
132054	99	45	41,3	cyclictest	273243	-21	kworker/u8:1+flush-8:0	21:31:27	0
132058	99	44	40,3	cyclictest	411558	-21	kworker/u8:3+events_unbound	00:36:13	1
132058	99	44	40,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	23:31:09	1
132058	99	44	40,3	cyclictest	194230	-21	kworker/u8:2+events_unbound	21:26:24	1
132054	99	44	35,6	cyclictest	297786	-21	latency_hist	21:55:01	0
132058	99	43	39,3	cyclictest	149231	-21	kworker/u8:3+events_unbound	19:26:25	1
132058	99	43	38,4	cyclictest	287019	-21	kworker/u8:2+events_unbound	22:46:28	1
132058	99	43	33,8	cyclictest	147930	-21	ntpq	19:21:20	1
132054	99	43	36,5	cyclictest	437192	-21	/usr/sbin/munin	00:16:18	0
132054	99	43	35,6	cyclictest	308045	-21	apt-get	22:06:05	0
132054	99	43	33,8	cyclictest	158071	-21	ntpq	19:31:20	0
132058	99	42	38,3	cyclictest	194230	-21	kworker/u8:2+events_unbound	21:11:18	1
132058	99	42	38,3	cyclictest	194230	-21	kworker/u8:2+events_unbound	21:11:18	1
132054	99	42	36,4	cyclictest	318089	-21	kworker/u8:3+flush-8:0	22:41:25	0
132058	99	41	37,3	cyclictest	396773	-21	kworker/u8:1+events_unbound	23:46:25	1
132054	99	41	32,7	cyclictest	280	-21	systemd-journal	22:50:00	0
132060	99	40	33,5	cyclictest	268410	-21	apt-get	21:26:05	2
132058	99	40	36,3	cyclictest	352145	-21	kworker/u8:0+events_unbound	23:06:26	1
132058	99	40	36,3	cyclictest	158771	-21	kworker/u8:1+events_unbound	19:41:28	1
132058	99	40	35,4	cyclictest	132166	-21	kworker/u8:0+events_unbound	19:13:21	1
132054	99	40	34,4	cyclictest	280	-21	systemd-journal	22:31:19	0
132060	99	39	29,8	cyclictest	280	-21	systemd-journal	19:25:00	2
132058	99	39	35,3	cyclictest	318089	-21	kworker/u8:3+events_unbound	23:26:26	1
132058	99	39	0,36	cyclictest	1	-21	systemd	23:00:00	1
132054	99	39	34,4	cyclictest	194230	-21	kworker/u8:2+flush-8:0	21:06:11	0
132054	99	39	27,9	cyclictest	447381	-21	diskstats	00:26:10	0
132058	99	38	34,3	cyclictest	132166	-21	kworker/u8:0+events_unbound	19:51:20	1
132058	99	38	33,4	cyclictest	287019	-21	kworker/u8:2+events_unbound	22:38:36	1
132054	99	38	32,4	cyclictest	280	-21	systemd-journal	19:55:00	0
132058	99	37	32,4	cyclictest	307440	-21	kworker/u8:0+events_unbound	22:12:19	1
132054	99	37	30,5	cyclictest	280	-21	systemd-journal	20:30:00	0
132054	99	37	28,6	cyclictest	461836	-21	latency_hist	00:40:00	0
132058	99	36	32,3	cyclictest	287019	-21	kworker/u8:2+events_unbound	00:06:26	1
437657	2	35	0,5	sleep2	0	-21	swapper/2	00:16:12	2
132060	99	35	31,3	cyclictest	189698	-21	irqcore	20:06:12	2
132058	99	35	32,2	cyclictest	307440	-21	kworker/u8:0+events_unbound	22:06:26	1
132058	99	35	29,4	cyclictest	442174	-21	apt-get	00:21:04	1
132054	99	35	31,2	cyclictest	223693	-21	kworker/u8:1+flush-8:0	20:56:19	0
132054	99	35	29,4	cyclictest	99894	-21	kworker/u8:1+flush-8:0	19:21:11	0
132054	99	35	29,4	cyclictest	287019	-21	kworker/u8:2+flush-8:0	21:46:25	0
446802	2	34	0,7	sleep3	0	-21	swapper/3	00:25:00	3
132060	99	34	27,5	cyclictest	402298	-21	apt-get	23:41:06	2
132058	99	34	30,3	cyclictest	441545	-21	kworker/u8:1+events_unbound	00:25:44	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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