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 Tue Jun 09, 2026 12:44:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1184339	2	164	0,3	sleep3	0	-21	swapper/3	07:10:39	3
1441384	2	97	0,2	chrt	0	-21	swapper/1	11:25:43	1
1210609	2	74	0,4	sleep1	0	-21	swapper/1	07:35:37	1
1182583	99	66	56,7	cyclictest	1254177	-21	latency_hist	08:20:01	0
1182585	99	63	58,3	cyclictest	1158752	-21	kworker/u8:2+events_unbound	07:30:48	1
1182585	99	60	56,3	cyclictest	1274435	-21	kworker/u8:1+flush-8:0	09:25:50	1
1182588	99	59	49,8	cyclictest	1318791	-21	gpgv	09:25:01	2
1182585	99	59	47,4	cyclictest	1471977	-21	kworker/u8:0+events_unbound	12:00:45	1
1182585	99	58	52,5	cyclictest	1141119	-21	kworker/u8:3+flush-8:0	07:10:42	1
1182588	99	54	48,4	cyclictest	1461091	-21	kworker/u8:2+events_unbound	11:45:48	2
1182585	99	54	49,4	cyclictest	1388321	-21	kworker/u8:1+events_unbound	10:55:34	1
1182585	99	53	46,5	cyclictest	1487697	-21	kworker/u8:0+flush-8:0	12:20:34	1
1182585	99	53	46,5	cyclictest	1199814	-21	kworker/u8:1+flush-8:0	07:40:40	1
1182585	99	53	46,4	cyclictest	1274435	-21	kworker/u8:1+events_unbound	10:05:51	1
1182588	99	52	46,4	cyclictest	1452193	-21	kworker/u8:1+events_unbound	11:40:46	2
1182585	99	52	47,4	cyclictest	1141119	-21	kworker/u8:3+events_unbound	08:30:47	1
1182585	99	52	46,4	cyclictest	1480762	-21	kworker/u8:1+flush-8:0	12:05:49	1
1182585	99	52	46,4	cyclictest	1328711	-21	kworker/u8:3+flush-8:0	09:50:50	1
1182585	99	52	46,4	cyclictest	1141119	-21	kworker/u8:3+events_unbound	08:00:50	1
1182585	99	50	44,4	cyclictest	1254220	-21	kworker/u8:0+flush-8:0	08:35:50	1
1182585	99	50	43,5	cyclictest	1274435	-21	kworker/u8:1+events_unbound	09:45:48	1
1182588	99	49	41,6	cyclictest	1423386	-21	kworker/u8:3+flush-8:0	11:15:37	2
1182585	99	49	45,3	cyclictest	1254220	-21	kworker/u8:0+flush-8:0	09:10:47	1
1182585	99	49	44,3	cyclictest	1199814	-21	kworker/u8:1+events_unbound	08:05:33	1
1182585	99	49	38,8	cyclictest	1501860	-21	ntpq	12:25:45	1
1182588	99	47	37,8	cyclictest	1187614	-21	cp	07:15:00	2
1182585	99	47	43,3	cyclictest	1274435	-21	kworker/u8:1+flush-8:0	09:55:31	1
1182585	99	47	41,4	cyclictest	1274435	-21	kworker/u8:1+flush-8:0	10:15:45	1
1182585	99	47	39,6	cyclictest	1704890	-21	systemd-journal	11:30:43	1
1182585	99	46	41,4	cyclictest	1141119	-21	kworker/u8:3+events_unbound	08:15:42	1
1182585	99	46	40,4	cyclictest	1452193	-21	kworker/u8:1+flush-8:0	11:50:44	1
1182585	99	45	41,3	cyclictest	1480762	-21	kworker/u8:1+events_unbound	12:35:40	1
1182585	99	45	39,5	cyclictest	1461091	-21	kworker/u8:2+flush-8:0	11:45:42	1
1182585	99	45	33,10	cyclictest	1704890	-21	systemd-journal	10:45:00	1
1182583	99	45	37,6	cyclictest	1427108	-21	ntpq	11:10:43	0
1182583	99	45	36,7	cyclictest	1274435	-21	kworker/u8:1+events_unbound	10:00:42	0
1182585	99	44	40,3	cyclictest	1254220	-21	kworker/u8:0+flush-8:0	08:55:37	1
1182585	99	44	39,4	cyclictest	1349099	-21	kworker/u8:0+events_unbound	10:10:53	1
1182585	99	44	38,4	cyclictest	1199814	-21	kworker/u8:1+events_unbound	07:25:46	1
1182585	99	44	32,9	cyclictest	1704890	-21	systemd-journal	11:11:46	1
1182588	99	43	38,4	cyclictest	1471977	-21	kworker/u8:0+flush-8:0	11:55:50	2
1182585	99	43	38,4	cyclictest	1141119	-21	kworker/u8:3+flush-8:0	07:55:50	1
1182585	99	43	37,5	cyclictest	1423386	-21	kworker/u8:3+events_unbound	11:35:43	1
1182585	99	43	37,5	cyclictest	1349099	-21	kworker/u8:0+flush-8:0	10:30:44	1
1182588	99	42	37,4	cyclictest	1452193	-21	kworker/u8:1+flush-8:0	11:50:45	2
1182588	99	42	36,4	cyclictest	1480762	-21	kworker/u8:1+flush-8:0	12:30:35	2
1182588	99	42	34,5	cyclictest	1199814	-21	kworker/u8:1+flush-8:0	07:55:45	2
1182588	99	42	32,7	cyclictest	1704890	-21	systemd-journal	10:40:00	2
1182585	99	42	38,3	cyclictest	1487697	-21	kworker/u8:0+events_unbound	12:30:46	1
1182585	99	42	38,3	cyclictest	1403261	-21	kworker/u8:0+flush-8:0	11:05:42	1
1182585	99	42	38,3	cyclictest	1349099	-21	kworker/u8:0+flush-8:0	10:20:45	1
1182585	99	42	38,3	cyclictest	1254220	-21	kworker/u8:0+flush-8:0	08:20:51	1
1182585	99	42	38,3	cyclictest	1254220	-21	kworker/u8:0+events_unbound	08:25:41	1
1182585	99	42	37,4	cyclictest	1274435	-21	kworker/u8:1+events_unbound	09:40:38	1
1182585	99	42	31,9	cyclictest	1407415	-21	ntpq	10:50:46	1
1182585	99	41	36,4	cyclictest	1141119	-21	kworker/u8:3+events_unbound	07:50:45	1
1182585	99	41	31,7	cyclictest	1288211	-21	ntpq	08:50:46	1
1182585	99	41	29,8	cyclictest	1433015	-21	apt-get	11:20:01	1
1182588	99	40	36,3	cyclictest	1349099	-21	kworker/u8:0+events_unbound	09:55:48	2
1182585	99	40	36,3	cyclictest	1378542	-21	kworker/u8:3+flush-8:0	10:25:50	1
1182585	99	40	33,5	cyclictest	1254220	-21	kworker/u8:0+events_unbound	08:45:33	1
1182583	99	40	36,3	cyclictest	1199814	-21	kworker/u8:1+flush-8:0	08:05:31	0
1182583	99	40	34,4	cyclictest	1363713	-21	munin-run	10:10:01	0
1182588	99	39	35,3	cyclictest	1403261	-21	kworker/u8:0+flush-8:0	10:50:38	2
1182585	99	39	35,3	cyclictest	1471977	-21	kworker/u8:0+events_unbound	11:55:46	1
1182585	99	39	35,3	cyclictest	1182748	-21	kworker/u8:0+flush-8:0	07:15:50	1
1182585	99	39	34,4	cyclictest	1141119	-21	kworker/u8:3+flush-8:0	07:20:47	1
1182585	99	39	33,5	cyclictest	1274435	-21	kworker/u8:1+events_unbound	09:35:00	1
1182585	99	39	33,5	cyclictest	1254220	-21	kworker/u8:0+events_unbound	09:15:44	1
1182585	99	39	32,5	cyclictest	1141119	-21	kworker/u8:3+flush-8:0	07:45:46	1
1182583	99	39	32,5	cyclictest	1268382	-21	ntpq	08:30:43	0
1182585	99	38	25,10	cyclictest	1704890	-21	systemd-journal	11:05:01	1
1182583	99	38	33,4	cyclictest	1328711	-21	kworker/u8:3+flush-8:0	09:45:33	0
1182583	99	38	30,6	cyclictest	1199814	-21	kworker/u8:1+flush-8:0	08:10:30	0
1182588	99	37	31,4	cyclictest	1378542	-21	kworker/u8:3+flush-8:0	10:45:46	2
1182588	99	37	31,4	cyclictest	1378542	-21	kworker/u8:3+flush-8:0	10:45:46	2
1182585	99	37	32,4	cyclictest	1274435	-21	kworker/u8:1+events_unbound	10:00:33	1
1182585	99	37	30,5	cyclictest	1378542	-21	kworker/u8:3+events_unbound	10:45:47	1
1182585	99	37	30,5	cyclictest	1378542	-21	kworker/u8:3+events_unbound	10:45:47	1
1182583	99	37	32,4	cyclictest	1274435	-21	kworker/u8:1+flush-8:0	08:40:34	0
1182583	99	37	32,4	cyclictest	1274435	-21	kworker/u8:1+flush-8:0	08:40:33	0
1182583	99	37	32,4	cyclictest	1254220	-21	kworker/u8:0+flush-8:0	08:50:35	0
1182583	99	37	32,4	cyclictest	1141119	-21	kworker/u8:3+events_unbound	08:00:00	0
1182588	99	36	32,3	cyclictest	1423386	-21	kworker/u8:3+flush-8:0	11:35:39	2
1182585	99	36	31,3	cyclictest	1	-21	systemd	08:45:00	1
1182585	99	36	31,3	cyclictest	1	-21	systemd	08:44:59	1
1182583	99	36	32,3	cyclictest	1423386	-21	kworker/u8:3+flush-8:0	12:25:50	0
1182583	99	36	32,3	cyclictest	1254220	-21	kworker/u8:0+flush-8:0	09:15:49	0
1182583	99	36	31,4	cyclictest	1254220	-21	kworker/u8:0+flush-8:0	09:25:47	0
1182583	99	36	27,6	cyclictest	1512653	-21	latency_hist	12:40:01	0
1181525	2	36	4,25	sleep0	0	-21	swapper/0	07:05:42	0
1182588	99	35	30,4	cyclictest	1480762	-21	kworker/u8:1+flush-8:0	12:05:51	2
1182585	99	35	30,3	cyclictest	1388321	-21	kworker/u8:1+events_unbound	10:35:36	1
1182585	99	35	28,5	cyclictest	1254220	-21	kworker/u8:0+events_unbound	09:05:33	1
1182583	99	35	30,4	cyclictest	1254220	-21	kworker/u8:0+flush-8:0	08:25:33	0
1182583	99	35	27,5	cyclictest	1423386	-21	kworker/u8:3+flush-8:0	11:20:46	0
1182583	99	35	26,7	cyclictest	1200112	-21	diskstats	07:25:33	0
1182585	99	34	30,3	cyclictest	1403261	-21	kworker/u8:0+flush-8:0	11:40:34	1
1182583	99	34	30,3	cyclictest	1403261	-21	kworker/u8:0+flush-8:0	11:09:17	0
1182583	99	34	30,3	cyclictest	1328711	-21	kworker/u8:3+flush-8:0	09:40:48	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