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 Jun 18, 2026 00:44:17)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1674978	2	192	0,3	sleep3	75	-21	kworker/3:1+events	21:40:01	3
1736312	2	80	0,2	sleep2	0	-21	swapper/2	22:40:31	2
1575875	2	71	0,5	sleep1	28	1	rcuc/1	20:00:26	1
1523574	99	69	64,4	cyclictest	1528683	-21	kworker/u8:1+events_unbound	20:20:39	1
1523574	99	66	62,3	cyclictest	1555495	-21	kworker/u8:2+events_unbound	22:00:35	1
1523574	99	65	59,4	cyclictest	1471125	-21	kworker/u8:0+flush-8:0	19:55:44	1
1523574	99	64	59,4	cyclictest	1662536	-21	kworker/u8:1+flush-8:0	21:35:42	1
1523574	99	64	59,4	cyclictest	1649359	-21	kworker/u8:4+events_unbound	21:25:41	1
1523574	99	64	58,3	cyclictest	1704072	-21	kworker/u8:3+events_unbound	23:40:40	1
1523574	99	64	58,3	cyclictest	1704072	-21	kworker/u8:3+events_unbound	23:40:40	1
1523574	99	64	57,5	cyclictest	1555495	-21	kworker/u8:2+flush-8:0	21:20:38	1
1523574	99	64	53,5	cyclictest	1815704	-21	kworker/u8:4+flush-8:0	00:10:30	1
1523574	99	63	56,6	cyclictest	1555495	-21	kworker/u8:2+events_unbound	21:15:37	1
1523572	99	62	54,6	cyclictest	1662536	-21	kworker/u8:1+flush-8:0	23:15:35	0
1523574	99	61	55,4	cyclictest	1704890	-21	systemd-journal	19:10:27	1
1523574	99	61	55,4	cyclictest	1471125	-21	kworker/u8:0+events_unbound	20:15:35	1
1523574	99	60	53,5	cyclictest	1754736	-21	kworker/u8:0+flush-8:0	00:00:37	1
1523574	99	60	53,5	cyclictest	1754736	-21	kworker/u8:0+flush-8:0	00:00:37	1
1523574	99	60	52,6	cyclictest	1704890	-21	systemd-journal	21:10:27	1
1523574	99	59	53,4	cyclictest	1754736	-21	kworker/u8:0+flush-8:0	23:30:26	1
1523574	99	59	53,4	cyclictest	1704072	-21	kworker/u8:3+events_unbound	22:30:34	1
1523574	99	59	52,5	cyclictest	1704072	-21	kworker/u8:3+flush-8:0	22:15:39	1
1523574	99	59	52,5	cyclictest	1599817	-21	kworker/u8:3+flush-8:0	20:35:37	1
1523574	99	59	52,5	cyclictest	1599817	-21	kworker/u8:3+flush-8:0	20:35:36	1
1523574	99	58	53,3	cyclictest	1629254	-21	kworker/u8:0+events_unbound	21:50:37	1
1523574	99	58	52,3	cyclictest	1629254	-21	kworker/u8:0+events_unbound	21:55:25	1
1523574	99	58	51,5	cyclictest	1704072	-21	kworker/u8:3+events_unbound	23:10:27	1
1523574	99	58	51,5	cyclictest	1629254	-21	kworker/u8:0+flush-8:0	20:55:29	1
1523574	99	58	50,6	cyclictest	1528683	-21	kworker/u8:1+flush-8:0	19:15:36	1
1523577	99	57	52,3	cyclictest	1629254	-21	kworker/u8:0+events_unbound	21:05:36	2
1523574	99	57	53,3	cyclictest	1555495	-21	kworker/u8:2+events_unbound	20:30:42	1
1523574	99	57	53,3	cyclictest	1555495	-21	kworker/u8:2+events_unbound	20:30:42	1
1523574	99	57	52,4	cyclictest	1599817	-21	kworker/u8:3+events_unbound	20:25:26	1
1523574	99	57	44,10	cyclictest	1704890	-21	systemd-journal	19:20:27	1
1621018	2	56	0,2	sleep2	0	-21	swapper/2	20:45:29	2
1523577	99	56	52,3	cyclictest	1815704	-21	kworker/u8:4+events_unbound	00:00:43	2
1523577	99	56	52,3	cyclictest	1815704	-21	kworker/u8:4+events_unbound	00:00:42	2
1523574	99	56	50,4	cyclictest	1704072	-21	kworker/u8:3+events_unbound	23:05:24	1
1523574	99	56	49,5	cyclictest	1815704	-21	kworker/u8:4+events_unbound	00:15:37	1
1523574	99	55	51,3	cyclictest	1662536	-21	kworker/u8:1+events_unbound	22:40:39	1
1523574	99	55	50,4	cyclictest	1662536	-21	kworker/u8:1+events_unbound	23:35:37	1
1523574	99	55	47,6	cyclictest	1662536	-21	kworker/u8:1+flush-8:0	23:50:36	1
1523574	99	55	46,6	cyclictest	1704890	-21	systemd-journal	22:50:28	1
1523574	99	55	44,7	cyclictest	1704890	-21	systemd-journal	20:10:27	1
1523574	99	54	49,4	cyclictest	1599817	-21	kworker/u8:3+events_unbound	21:05:41	1
1523574	99	54	49,4	cyclictest	1555495	-21	kworker/u8:2+events_unbound	21:45:39	1
1523574	99	54	48,4	cyclictest	1629254	-21	kworker/u8:0+events_unbound	22:05:36	1
1523574	99	54	48,3	cyclictest	1662536	-21	kworker/u8:1+events_unbound	22:10:26	1
1523574	99	54	47,5	cyclictest	1754736	-21	kworker/u8:0+events_unbound	00:05:28	1
1523574	99	54	47,5	cyclictest	1704072	-21	kworker/u8:3+events_unbound	23:00:36	1
1523577	99	52	48,3	cyclictest	1662536	-21	kworker/u8:1+events_unbound	22:50:35	2
1523577	99	52	48,3	cyclictest	1528683	-21	kworker/u8:1+events_unbound	20:20:43	2
1523574	99	52	46,4	cyclictest	1528683	-21	kworker/u8:1+events_unbound	19:25:40	1
1523572	99	52	46,4	cyclictest	1471125	-21	kworker/u8:0+flush-8:0	19:45:29	0
1523577	99	51	47,3	cyclictest	1555495	-21	kworker/u8:2+events_unbound	21:45:45	2
1523574	99	51	45,4	cyclictest	1704072	-21	kworker/u8:3+events_unbound	22:25:28	1
1523572	99	51	41,8	cyclictest	1619336	-21	ntpq	20:40:35	0
1523577	99	50	44,4	cyclictest	1575276	-21	gpgv	20:00:00	2
1523574	99	50	44,5	cyclictest	1754736	-21	kworker/u8:0+events_unbound	23:55:39	1
1523574	99	50	44,5	cyclictest	1754736	-21	kworker/u8:0+events_unbound	23:55:38	1
1523574	99	50	44,4	cyclictest	1754736	-21	kworker/u8:0+events_unbound	23:20:25	1
1523574	99	50	44,4	cyclictest	1599817	-21	kworker/u8:3+flush-8:0	20:45:32	1
1523574	99	50	44,4	cyclictest	1599817	-21	kworker/u8:3+events_unbound	20:50:24	1
1523574	99	50	42,6	cyclictest	1528683	-21	kworker/u8:1+events_unbound	19:50:25	1
1523574	99	50	42,6	cyclictest	1528683	-21	kworker/u8:1+events_unbound	19:50:24	1
1523574	99	49	43,5	cyclictest	1555495	-21	kworker/u8:2+events_unbound	22:45:38	1
1523572	99	49	45,3	cyclictest	1704072	-21	kworker/u8:3+events_unbound	22:15:42	0
1523572	99	49	41,6	cyclictest	1599233	-21	ntpq	20:20:33	0
1523574	99	48	41,5	cyclictest	1662536	-21	kworker/u8:1+events_unbound	21:30:42	1
1523574	99	47	40,5	cyclictest	1555495	-21	kworker/u8:2+events_unbound	22:55:27	1
1523572	99	47	38,7	cyclictest	1614345	-21	ntpq	20:35:33	0
1523572	99	47	38,7	cyclictest	1614345	-21	ntpq	20:35:33	0
1523574	99	46	41,3	cyclictest	1844318	-21	kworker/u8:1+events_unbound	00:30:30	1
1523574	99	46	41,3	cyclictest	1599817	-21	kworker/u8:3+events_unbound	20:45:01	1
1523572	99	46	40,4	cyclictest	1699958	-21	apt-get	22:05:21	0
1523572	99	46	37,7	cyclictest	1540444	-21	apt-get	19:24:59	0
1523572	99	46	37,6	cyclictest	1844293	-21	base64	00:30:02	0
1523572	99	46	36,8	cyclictest	1838024	-21	ntpq	00:20:35	0
1523574	99	45	41,3	cyclictest	1754736	-21	kworker/u8:0+events_unbound	00:20:38	1
1523574	99	45	40,4	cyclictest	1815704	-21	kworker/u8:4+flush-8:0	00:35:26	1
1523574	99	45	40,4	cyclictest	1528683	-21	kworker/u8:1+events_unbound	19:45:32	1
1523574	99	45	38,5	cyclictest	1662536	-21	kworker/u8:1+flush-8:0	22:35:37	1
1523574	99	44	40,3	cyclictest	1754736	-21	kworker/u8:0+events_unbound	00:25:40	1
1523574	99	44	40,3	cyclictest	1528683	-21	kworker/u8:1+flush-8:0	19:40:40	1
1523574	99	43	39,3	cyclictest	1754736	-21	kworker/u8:0+flush-8:0	23:15:26	1
1523574	99	43	39,3	cyclictest	1528683	-21	kworker/u8:1+events_unbound	20:05:26	1
1523574	99	43	38,4	cyclictest	1754736	-21	kworker/u8:0+flush-8:0	23:25:43	1
1523572	99	43	38,4	cyclictest	1662536	-21	kworker/u8:1+flush-8:0	23:55:30	0
1523572	99	43	38,4	cyclictest	1662536	-21	kworker/u8:1+flush-8:0	23:55:30	0
1523577	99	42	38,3	cyclictest	1555495	-21	kworker/u8:2+events_unbound	20:35:26	2
1523577	99	42	38,3	cyclictest	1555495	-21	kworker/u8:2+events_unbound	20:35:25	2
1523577	99	42	37,4	cyclictest	1555495	-21	kworker/u8:2+events_unbound	22:55:46	2
1523572	99	42	37,3	cyclictest	1528683	-21	kworker/u8:1+flush-8:0	19:50:31	0
1523572	99	42	37,3	cyclictest	1528683	-21	kworker/u8:1+flush-8:0	19:50:30	0
1523572	99	42	34,6	cyclictest	1679051	-21	ntpq	21:40:37	0
1523577	99	41	36,4	cyclictest	1815704	-21	kworker/u8:4+events_unbound	00:20:46	2
1523572	99	41	35,4	cyclictest	1471125	-21	kworker/u8:0+flush-8:0	20:05:38	0
1523572	99	41	34,5	cyclictest	1754736	-21	kworker/u8:0+events_unbound	23:20:35	0
1523577	99	40	36,3	cyclictest	1528683	-21	kworker/u8:1+flush-8:0	19:50:33	2
1523577	99	40	36,3	cyclictest	1528683	-21	kworker/u8:1+flush-8:0	19:50:32	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