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 May 21, 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
1147815	2	79	0,3	sleep3	75	-21	kworker/3:1+events	10:35:57	3
1127500	2	57	0,2	chrt	47	1	rcuc/3	10:15:54	3
937666	99	51	42,7	cyclictest	1209404	-21	latency_hist	11:40:02	0
937666	99	50	45,3	cyclictest	969146	-21	kworker/u8:0+events_unbound	09:30:56	0
937668	99	49	42,5	cyclictest	1209650	-21	kworker/u8:3+flush-8:0	12:35:58	1
937668	99	49	39,7	cyclictest	1074715	-21	latency_hist	09:25:01	1
937668	99	47	42,4	cyclictest	988591	-21	kworker/u8:3+events_unbound	08:11:03	1
937668	99	47	42,4	cyclictest	969146	-21	kworker/u8:0+flush-8:0	07:40:58	1
937668	99	47	42,4	cyclictest	906089	-21	kworker/u8:2+flush-8:0	08:45:57	1
937668	99	47	41,5	cyclictest	969146	-21	kworker/u8:0+flush-8:0	09:31:00	1
937668	99	47	41,5	cyclictest	1084782	-21	kworker/u8:2+flush-8:0	10:40:59	1
937668	99	47	41,4	cyclictest	1138952	-21	kworker/u8:3+flush-8:0	10:31:04	1
937668	99	47	39,6	cyclictest	1189819	-21	kworker/u8:1+flush-8:0	11:31:04	1
937666	99	47	43,3	cyclictest	1209650	-21	kworker/u8:3+events_unbound	12:16:05	0
1153482	2	47	0,4	chrt	0	-21	swapper/0	10:41:03	0
937668	99	46	41,4	cyclictest	1209650	-21	kworker/u8:3+flush-8:0	12:16:06	1
937668	99	46	41,4	cyclictest	1164557	-21	kworker/u8:4+flush-8:0	11:21:00	1
937666	99	46	42,3	cyclictest	1209650	-21	kworker/u8:3+events_unbound	12:06:05	0
937666	99	46	38,6	cyclictest	949697	-21	/usr/sbin/munin	07:20:58	0
937666	99	46	38,6	cyclictest	949697	-21	/usr/sbin/munin	07:20:58	0
937666	99	46	38,5	cyclictest	1704890	-21	systemd-journal	08:25:54	0
937671	99	45	36,7	cyclictest	969379	-21	gpgv	07:40:01	2
937666	99	45	41,3	cyclictest	969146	-21	kworker/u8:0+events_unbound	08:20:49	0
937666	99	45	41,3	cyclictest	1233881	-21	kworker/u8:1+events_unbound	12:20:43	0
937666	99	45	41,3	cyclictest	1164557	-21	kworker/u8:4+events_unbound	10:56:05	0
937666	99	45	41,3	cyclictest	1124471	-21	kworker/u8:1+events_unbound	10:20:44	0
937668	99	44	40,3	cyclictest	1084782	-21	kworker/u8:2+events_unbound	10:45:56	1
937668	99	44	39,4	cyclictest	1204310	-21	kworker/u8:2+events_unbound	11:50:49	1
937668	99	44	39,3	cyclictest	906089	-21	kworker/u8:2+flush-8:0	08:56:04	1
937668	99	44	38,5	cyclictest	969146	-21	kworker/u8:0+events_unbound	08:06:00	1
937668	99	44	36,6	cyclictest	1209650	-21	kworker/u8:3+events_unbound	12:26:05	1
937668	99	44	36,6	cyclictest	1084782	-21	kworker/u8:2+events_unbound	09:35:59	1
937666	99	44	40,3	cyclictest	1209650	-21	kworker/u8:3+events_unbound	12:35:43	0
937666	99	44	40,3	cyclictest	1028973	-21	kworker/u8:3+events_unbound	09:56:08	0
937668	99	43	39,2	cyclictest	1049757	-21	kworker/u8:1+events_unbound	09:11:02	1
937668	99	43	38,4	cyclictest	955074	-21	kworker/u8:3+events_unbound	07:35:58	1
937668	99	43	38,4	cyclictest	906089	-21	kworker/u8:2+flush-8:0	08:01:00	1
937668	99	43	38,4	cyclictest	1109851	-21	kworker/u8:0+flush-8:0	10:11:07	1
937668	99	43	37,4	cyclictest	1209650	-21	kworker/u8:3+events_unbound	11:56:00	1
937668	99	43	37,3	cyclictest	885781	-21	kworker/u8:1+events_unbound	07:11:05	1
937666	99	43	39,3	cyclictest	576446	-21	kworker/u8:3+events_unbound	07:19:42	0
937666	99	43	39,3	cyclictest	1209650	-21	kworker/u8:3+events_unbound	12:31:43	0
937666	99	43	39,3	cyclictest	1189819	-21	kworker/u8:1+events_unbound	11:25:58	0
937666	99	43	39,3	cyclictest	1189819	-21	kworker/u8:1+events_unbound	11:25:58	0
937666	99	43	33,7	cyclictest	963407	-21	ntpq	07:30:59	0
937671	99	42	36,4	cyclictest	1028973	-21	kworker/u8:3+flush-8:0	09:00:47	2
937668	99	42	37,4	cyclictest	1164557	-21	kworker/u8:4+flush-8:0	10:56:02	1
937668	99	42	37,3	cyclictest	1209650	-21	kworker/u8:3+flush-8:0	12:00:53	1
937668	99	42	36,4	cyclictest	1164557	-21	kworker/u8:4+flush-8:0	11:10:56	1
937668	99	42	34,6	cyclictest	906089	-21	kworker/u8:2+events_unbound	07:56:04	1
937666	99	42	38,3	cyclictest	988591	-21	kworker/u8:3+events_unbound	08:10:43	0
937666	99	42	38,3	cyclictest	1224483	-21	kworker/u8:0+events_unbound	12:04:43	0
937666	99	42	38,3	cyclictest	1209650	-21	kworker/u8:3+events_unbound	11:55:46	0
937666	99	42	38,3	cyclictest	1178914	-21	kworker/u8:0+events_unbound	11:10:46	0
937666	99	42	38,3	cyclictest	1049757	-21	kworker/u8:1+events_unbound	09:20:48	0
937666	99	42	38,3	cyclictest	1028973	-21	kworker/u8:3+events_unbound	09:46:07	0
937666	99	42	37,4	cyclictest	906089	-21	kworker/u8:2+events_unbound	08:19:43	0
937666	99	42	37,4	cyclictest	1209650	-21	kworker/u8:3+events_unbound	12:28:43	0
937668	99	41	37,3	cyclictest	1084782	-21	kworker/u8:2+flush-8:0	10:26:02	1
937668	99	41	36,4	cyclictest	1049757	-21	kworker/u8:1+flush-8:0	09:56:05	1
937668	99	41	36,3	cyclictest	1178914	-21	kworker/u8:0+events_unbound	11:35:56	1
937668	99	41	35,5	cyclictest	1164557	-21	kworker/u8:4+events_unbound	11:05:59	1
937668	99	41	35,5	cyclictest	1028973	-21	kworker/u8:3+flush-8:0	08:51:06	1
937668	99	41	35,5	cyclictest	1028973	-21	kworker/u8:3+flush-8:0	08:51:05	1
937668	99	41	35,4	cyclictest	885781	-21	kworker/u8:1+events_unbound	07:26:03	1
937668	99	41	33,6	cyclictest	969146	-21	kworker/u8:0+flush-8:0	08:21:03	1
937666	99	41	37,3	cyclictest	906089	-21	kworker/u8:2+events_unbound	08:36:05	0
937666	99	41	37,3	cyclictest	906089	-21	kworker/u8:2+events_unbound	07:41:05	0
937666	99	41	37,3	cyclictest	1084782	-21	kworker/u8:2+events_unbound	10:25:53	0
937666	99	41	37,3	cyclictest	1028973	-21	kworker/u8:3+events_unbound	09:40:48	0
937666	99	41	37,3	cyclictest	1028973	-21	kworker/u8:3+events_unbound	08:43:43	0
937666	99	41	36,4	cyclictest	1109851	-21	kworker/u8:0+events_unbound	10:00:47	0
937666	99	41	34,5	cyclictest	937860	-21	apt-get	07:10:46	0
937668	99	40	36,3	cyclictest	1164557	-21	kworker/u8:4+events_unbound	11:15:59	1
937668	99	40	34,5	cyclictest	906089	-21	kworker/u8:2+flush-8:0	08:35:57	1
937668	99	40	34,5	cyclictest	1158714	-21	kworker/u8:3+flush-8:0	11:01:05	1
937668	99	40	34,4	cyclictest	1109851	-21	kworker/u8:0+events_unbound	10:06:01	1
937668	99	40	34,4	cyclictest	1109851	-21	kworker/u8:0+events_unbound	10:06:01	1
937668	99	40	33,5	cyclictest	906089	-21	kworker/u8:2+flush-8:0	07:21:02	1
937668	99	40	33,5	cyclictest	906089	-21	kworker/u8:2+flush-8:0	07:21:02	1
937666	99	40	36,3	cyclictest	906089	-21	kworker/u8:2+events_unbound	08:01:07	0
937666	99	40	36,3	cyclictest	885781	-21	kworker/u8:1+events_unbound	07:37:38	0
937666	99	40	36,3	cyclictest	1224483	-21	kworker/u8:0+events_unbound	12:10:43	0
937666	99	40	36,3	cyclictest	1164557	-21	kworker/u8:4+events_unbound	11:19:43	0
937666	99	40	36,3	cyclictest	1149223	-21	kworker/u8:1+events_unbound	10:50:57	0
937666	99	40	36,3	cyclictest	1138952	-21	kworker/u8:3+events_unbound	10:30:42	0
937666	99	40	36,3	cyclictest	1028973	-21	kworker/u8:3+events_unbound	08:51:26	0
937666	99	40	36,3	cyclictest	1028973	-21	kworker/u8:3+events_unbound	08:51:26	0
937666	99	40	35,4	cyclictest	1028973	-21	kworker/u8:3+events_unbound	08:55:42	0
937668	99	39	34,3	cyclictest	906089	-21	kworker/u8:2+events_unbound	08:40:47	1
937668	99	39	31,6	cyclictest	1189819	-21	kworker/u8:1+flush-8:0	11:25:59	1
937668	99	39	31,6	cyclictest	1189819	-21	kworker/u8:1+flush-8:0	11:25:59	1
937666	99	39	35,3	cyclictest	969146	-21	kworker/u8:0+events_unbound	07:57:43	0
937666	99	39	35,3	cyclictest	1204310	-21	kworker/u8:2+events_unbound	11:51:09	0
937666	99	39	35,3	cyclictest	1164557	-21	kworker/u8:4+events_unbound	11:20:43	0
937666	99	39	35,3	cyclictest	1164557	-21	kworker/u8:4+events_unbound	11:04:43	0
937666	99	39	35,3	cyclictest	1028973	-21	kworker/u8:3+events_unbound	09:37:43	0
937666	99	39	35,3	cyclictest	1028973	-21	kworker/u8:3+events_unbound	09:09:44	0
937666	99	39	34,4	cyclictest	1164557	-21	kworker/u8:4+events_unbound	11:08:43	0
937668	99	38	33,3	cyclictest	1209650	-21	kworker/u8:3+events_unbound	12:05:54	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