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 #4, slot #1

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: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack4slot1s.osadl.org (updated Wed Dec 31, 2025 00:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
7750	2	91	0,3	sleep3	0	-21	swapper/3	21:45:35	3
7750	2	91	0,3	sleep3	0	-21	swapper/3	21:45:35	3
25476	2	86	0,3	sleep3	0	-21	swapper/3	21:05:39	3
21538	2	78	0,3	chrt	0	-21	swapper/2	19:30:30	2
1343	2	78	0,3	chrt	1345	-21	threads	20:00:40	1
1343	2	78	0,3	chrt	1345	-21	threads	20:00:40	1
31634	2	68	0,2	sleep2	0	-21	swapper/2	00:15:37	2
31634	2	68	0,2	sleep2	0	-21	swapper/2	00:15:37	2
31634	2	68	0,2	sleep2	0	-21	swapper/2	00:15:37	2
28303	2	66	0,2	sleep2	35	1	rcuc/2	22:40:33	2
28303	2	66	0,2	sleep2	35	1	rcuc/2	22:40:33	2
6349	2	65	0,2	chrt	0	-21	swapper/2	21:40:39	2
6349	2	65	0,2	chrt	0	-21	swapper/2	21:40:39	2
23500	2	59	0,3	sleep3	0	-21	swapper/3	21:00:36	3
14107	99	58	52,3	cyclictest	0	-21	swapper/0	00:00:26	0
14107	99	58	52,3	cyclictest	0	-21	swapper/0	00:00:26	0
14107	99	58	52,3	cyclictest	0	-21	swapper/0	00:00:26	0
12752	2	58	0,3	chrt	0	-21	swapper/1	20:30:43	1
28097	2	55	0,3	sleep2	0	-21	swapper/2	00:05:40	2
19718	2	54	0,3	sleep3	0	-21	swapper/3	22:15:42	3
19718	2	54	0,3	sleep3	0	-21	swapper/3	22:15:42	3
30710	2	53	0,2	sleep3	0	-21	swapper/3	22:45:41	3
30710	2	53	0,2	sleep3	0	-21	swapper/3	22:45:41	3
18238	2	49	0,3	chrt	0	-21	swapper/3	19:20:34	3
18238	2	49	0,3	chrt	0	-21	swapper/3	19:20:34	3
26664	2	47	0,1	sleep0	0	-21	swapper/0	00:00:48	0
26664	2	47	0,1	sleep0	0	-21	swapper/0	00:00:48	0
14110	99	47	1,30	cyclictest	28950	-21	latency_hist	19:50:26	1
14110	99	46	4,32	cyclictest	25969	-21	memory	00:00:36	1
14110	99	46	4,32	cyclictest	25969	-21	memory	00:00:36	1
892	2	45	0,3	sleep0	0	-21	swapper/0	00:20:34	0
892	2	45	0,3	sleep0	0	-21	swapper/0	00:20:34	0
26979	2	45	0,2	sleep3	0	-21	swapper/3	19:45:22	3
26979	2	45	0,2	sleep3	0	-21	swapper/3	19:45:22	3
14110	99	45	1,31	cyclictest	8075	-21	taskset	23:12:23	1
14110	99	45	1,31	cyclictest	8075	-21	taskset	23:12:23	1
21759	2	44	0,3	sleep0	0	-21	swapper/0	19:30:32	0
20248	2	43	0,3	sleep2	0	-21	swapper/2	23:45:34	2
20248	2	43	0,3	sleep2	0	-21	swapper/2	23:45:34	2
14110	99	42	1,28	cyclictest	15753	-21	taskset	23:34:50	1
14110	99	42	1,28	cyclictest	15753	-21	taskset	23:34:50	1
14110	99	42	0,29	cyclictest	2939	-21	/usr/sbin/munin	21:30:43	1
14110	99	42	0,29	cyclictest	2939	-21	/usr/sbin/munin	21:30:43	1
10389	2	42	0,3	sleep3	0	-21	swapper/3	20:25:34	3
32606	2	41	0,1	sleep1	346	-21	unixbench_singl	22:50:42	1
32606	2	41	0,1	sleep1	346	-21	unixbench_singl	22:50:42	1
27841	2	41	0,2	sleep1	27844	-21	missed_timers	00:05:35	1
27261	2	41	0,3	sleep0	0	-21	swapper/0	00:05:30	0
14863	2	41	0,1	sleep1	0	-21	swapper/1	22:05:31	1
14863	2	41	0,1	sleep1	0	-21	swapper/1	22:05:31	1
14110	99	41	1,28	cyclictest	31094	-21	seq	22:47:15	1
14110	99	41	1,28	cyclictest	31094	-21	seq	22:47:15	1
14110	99	41	0,25	cyclictest	21956	-21	taskset	22:24:42	1
14110	99	41	0,25	cyclictest	21956	-21	taskset	22:24:42	1
28151	2	40	0,2	sleep1	28154	-21	grep	22:40:32	1
28151	2	40	0,2	sleep1	28154	-21	grep	22:40:32	1
14110	99	40	0,38	cyclictest	1390	-21	sshd	21:29:49	1
14110	99	40	0,38	cyclictest	1390	-21	sshd	21:29:49	1
29862	2	39	0,2	sleep2	0	-21	swapper/2	19:50:40	2
14110	99	39	18,18	cyclictest	14102	-21	cyclictest	00:20:44	1
14110	99	39	18,18	cyclictest	14102	-21	cyclictest	00:20:44	1
14110	99	39	1,26	cyclictest	29899	-21	seq	21:18:14	1
14110	99	39	1,26	cyclictest	29899	-21	seq	21:18:14	1
14110	99	39	1,26	cyclictest	29899	-21	seq	21:18:14	1
14110	99	39	1,25	cyclictest	30712	-21	runrttasks	00:14:59	1
14110	99	39	1,25	cyclictest	30712	-21	runrttasks	00:14:59	1
14110	99	39	1,24	cyclictest	0	-21	swapper/1	19:22:35	1
14110	99	39	1,24	cyclictest	0	-21	swapper/1	19:22:35	1
14110	99	39	0,37	cyclictest	25189	-40	mandb	00:00:32	1
14110	99	39	0,37	cyclictest	25189	-40	mandb	00:00:32	1
7473	2	38	0,1	sleep0	0	-21	swapper/0	23:10:39	0
7473	2	38	0,1	sleep0	0	-21	swapper/0	23:10:39	0
14110	99	38	1,35	cyclictest	0	-21	swapper/1	21:01:59	1
14110	99	38	1,34	cyclictest	4857	-21	ntp_states	20:10:37	1
14110	99	38	1,34	cyclictest	4857	-21	ntp_states	20:10:37	1
14110	99	38	1,34	cyclictest	4857	-21	ntp_states	20:10:37	1
14110	99	38	1,34	cyclictest	31572	-21	ntp_states	19:55:39	1
14110	99	38	1,34	cyclictest	31572	-21	ntp_states	19:55:39	1
14110	99	38	1,34	cyclictest	31572	-21	ntp_states	19:55:39	1
14114	99	37	1,25	cyclictest	26689	-21	taskset	00:01:07	3
14114	99	37	1,25	cyclictest	26689	-21	taskset	00:01:07	3
14110	99	37	1,34	cyclictest	601	-21	snmpd	21:08:30	1
14110	99	37	1,33	cyclictest	28152	-21	sshd	21:14:49	1
14110	99	37	1,33	cyclictest	22378	-21	sshd	20:57:49	1
14110	99	37	1,33	cyclictest	22378	-21	sshd	20:57:49	1
14110	99	37	0,34	cyclictest	23010	-21	sshd	19:33:48	1
16349	2	36	0,3	sleep2	0	-21	swapper/2	22:09:50	2
16349	2	36	0,3	sleep2	0	-21	swapper/2	22:09:50	2
14113	99	36	3,23	cyclictest	25271	-21	chrt	00:00:26	2
14113	99	36	3,23	cyclictest	25271	-21	chrt	00:00:26	2
14113	99	36	3,23	cyclictest	25271	-21	chrt	00:00:26	2
14110	99	36	9,25	cyclictest	729	-21	dbus-daemon	23:50:39	1
14110	99	36	6,28	cyclictest	16616	-21	vmstat	20:40:43	1
14110	99	36	6,28	cyclictest	16616	-21	vmstat	20:40:43	1
14110	99	36	30,4	cyclictest	10173	-21	cron	23:20:18	1
14110	99	36	30,4	cyclictest	10173	-21	cron	23:20:18	1
14110	99	36	1,33	cyclictest	16768	-21	ntp_states	23:35:38	1
14110	99	36	1,33	cyclictest	16768	-21	ntp_states	23:35:38	1
14110	99	36	1,33	cyclictest	0	-21	swapper/1	20:23:58	1
14110	99	36	1,32	cyclictest	3491	-21	sshd	20:05:49	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