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 system in rack #0, slot #2

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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot2.osadl.org (updated Thu Mar 19, 2026 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1342868	2	101	0,1	sleep7	1342866	-21	cut	23:38:49	7
1158233	2	72	0,1	sleep7	1158231	-21	ssh	22:19:15	7
735623	2	58	48,7	sleep5	0	-21	swapper/5	19:01:37	5
735575	2	55	46,6	sleep4	0	-21	swapper/4	19:00:56	4
736053	99	54	52,2	cyclictest	1087620	-21	kworker/u16:1+flush-8:0	23:24:02	4
736053	99	52	49,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	22:59:04	4
864626	2	50	0,0	sleep7	864627	-21	expr	20:08:45	7
736055	99	49	47,2	cyclictest	1220984	-21	kworker/u16:3+events_unbound	23:38:58	5
736055	99	49	47,2	cyclictest	1185788	-21	kworker/u16:2+events_unbound	23:04:05	5
736053	99	49	46,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	21:53:32	4
736055	99	47	45,2	cyclictest	1400100	-21	kworker/u16:4+events_unbound	00:09:02	5
736053	99	47	45,2	cyclictest	1278138	-21	kworker/u16:0+events_unbound	23:13:50	4
736053	99	47	44,2	cyclictest	1185788	-21	kworker/u16:2+flush-8:0	22:53:58	4
736053	99	47	44,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	00:23:46	4
735550	2	47	37,7	sleep6	0	-21	swapper/6	19:00:34	6
736053	99	46	44,2	cyclictest	989929	-21	kworker/u16:1+events_unbound	21:13:48	4
736053	99	46	44,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	00:29:06	4
736053	99	46	43,2	cyclictest	735817	-21	kworker/u16:2+flush-8:0	19:18:48	4
736056	99	45	42,2	cyclictest	825673	-21	kworker/u16:2+flush-8:0	21:04:08	6
736053	99	45	42,2	cyclictest	854244	-21	kworker/u16:1+events_unbound	20:38:47	4
736055	99	44	42,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	23:16:03	5
736053	99	43	41,2	cyclictest	1220984	-21	kworker/u16:3+events_unbound	23:58:43	4
736053	99	43	40,2	cyclictest	989929	-21	kworker/u16:1+events_unbound	21:28:47	4
736055	99	42	40,2	cyclictest	1185788	-21	kworker/u16:2+events_unbound	22:43:58	5
736053	99	42	40,2	cyclictest	1184894	-21	kworker/u16:0+events_unbound	22:43:32	4
736053	99	42	40,2	cyclictest	1184894	-21	kworker/u16:0+events_unbound	22:43:32	4
736053	99	42	40,2	cyclictest	1089037	-21	kworker/u16:5+events_unbound	22:23:48	4
736053	99	42	40,2	cyclictest	1089037	-21	kworker/u16:5+events_unbound	22:18:55	4
736053	99	42	40,2	cyclictest	1089037	-21	kworker/u16:5+events_unbound	22:14:06	4
736053	99	42	39,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	22:43:46	4
735748	2	42	2,36	sleep7	0	-21	swapper/7	19:03:24	7
736055	99	41	39,2	cyclictest	969310	-21	kworker/u16:4+events_unbound	21:21:59	5
736055	99	41	39,2	cyclictest	969310	-21	kworker/u16:4+events_unbound	21:21:59	5
736055	99	41	39,2	cyclictest	1278138	-21	kworker/u16:0+events_unbound	23:45:39	5
736055	99	41	39,2	cyclictest	1278138	-21	kworker/u16:0+events_unbound	00:26:06	5
736055	99	41	39,2	cyclictest	1278138	-21	kworker/u16:0+events_unbound	00:22:22	5
736055	99	41	39,2	cyclictest	1087663	-21	kworker/u16:4+events_unbound	22:31:02	5
736053	99	41	39,2	cyclictest	825673	-21	kworker/u16:2+flush-8:0	20:58:58	4
736055	99	40	38,2	cyclictest	969310	-21	kworker/u16:4+flush-8:0	21:03:58	5
736055	99	40	38,2	cyclictest	735817	-21	kworker/u16:2+flush-8:0	19:08:56	5
736055	99	40	38,2	cyclictest	735817	-21	kworker/u16:2+flush-8:0	19:08:56	5
736055	99	40	38,2	cyclictest	1087663	-21	kworker/u16:4+events_unbound	22:06:11	5
736053	99	40	38,2	cyclictest	1087620	-21	kworker/u16:1+flush-8:0	23:53:47	4
736053	99	40	38,2	cyclictest	1062418	-21	kworker/u16:2+flush-8:0	21:43:56	4
736053	99	40	37,2	cyclictest	989929	-21	kworker/u16:1+flush-8:0	21:18:48	4
736053	99	40	37,2	cyclictest	989929	-21	kworker/u16:1+flush-8:0	21:18:48	4
736053	99	40	37,2	cyclictest	1185788	-21	kworker/u16:2+events_unbound	23:03:46	4
873386	2	39	0,0	chrt	0	-21	swapper/6	20:13:33	6
736055	99	39	37,2	cyclictest	989929	-21	kworker/u16:1+events_unbound	21:18:10	5
736055	99	39	37,2	cyclictest	930646	-21	kworker/u16:0+events_unbound	21:41:35	5
736055	99	39	37,2	cyclictest	825673	-21	kworker/u16:2+flush-8:0	20:04:00	5
736055	99	39	37,2	cyclictest	777992	-21	kworker/u16:3+flush-8:0	19:54:01	5
736055	99	39	37,2	cyclictest	777992	-21	kworker/u16:3+flush-8:0	19:54:01	5
736055	99	39	37,2	cyclictest	777992	-21	kworker/u16:3+events_unbound	20:23:46	5
736055	99	39	37,2	cyclictest	1400100	-21	kworker/u16:4+events_unbound	00:17:34	5
736055	99	39	37,2	cyclictest	1278138	-21	kworker/u16:0+events_unbound	23:11:19	5
736055	99	39	37,2	cyclictest	1185788	-21	kworker/u16:2+flush-8:0	22:59:07	5
736055	99	39	37,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	22:08:49	5
736055	99	39	37,2	cyclictest	1062418	-21	kworker/u16:2+flush-8:0	21:48:58	5
736055	99	39	37,2	cyclictest	1062418	-21	kworker/u16:2+flush-8:0	21:44:01	5
736055	99	39	37,2	cyclictest	1050381	-21	kworker/u16:3+events_unbound	21:36:11	5
736060	99	38	34,3	cyclictest	1400016	-21	updatedb	00:03:31	7
736055	99	38	36,2	cyclictest	930646	-21	kworker/u16:0+events_unbound	21:26:54	5
736055	99	38	36,2	cyclictest	1184894	-21	kworker/u16:0+events_unbound	22:34:56	5
736055	99	38	36,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	23:37:58	5
736055	99	38	36,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	22:56:59	5
736055	99	38	36,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	22:49:38	5
736053	99	38	37,1	cyclictest	1220984	-21	kworker/u16:3+events_unbound	23:12:30	4
736053	99	38	36,2	cyclictest	806490	-21	kworker/u16:1+events_unbound	19:43:47	4
736053	99	38	35,2	cyclictest	1400100	-21	kworker/u16:4+events_unbound	00:08:43	4
736055	99	37	35,2	cyclictest	1087620	-21	kworker/u16:1+flush-8:0	23:23:59	5
736055	99	37	34,2	cyclictest	1089037	-21	kworker/u16:5+flush-8:0	22:03:32	5
736055	99	37	34,2	cyclictest	1089037	-21	kworker/u16:5+flush-8:0	22:03:32	5
736053	99	37	35,2	cyclictest	989929	-21	kworker/u16:1+events_unbound	21:38:51	4
736053	99	37	35,2	cyclictest	825673	-21	kworker/u16:2+flush-8:0	20:08:27	4
736055	99	36	34,2	cyclictest	989929	-21	kworker/u16:1+events_unbound	21:29:54	5
736055	99	36	34,2	cyclictest	930646	-21	kworker/u16:0+events_unbound	21:12:24	5
736055	99	36	34,2	cyclictest	854244	-21	kworker/u16:1+flush-8:0	20:33:57	5
736055	99	36	34,2	cyclictest	1087620	-21	kworker/u16:1+flush-8:0	00:28:53	5
736055	99	36	34,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	21:55:10	5
736053	99	36	34,2	cyclictest	1278138	-21	kworker/u16:0+events_unbound	00:07:23	4
736053	99	36	33,2	cyclictest	760382	-21	kworker/u16:1+flush-8:0	19:23:59	4
736055	99	35	33,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	23:54:27	5
736055	99	35	33,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	22:22:22	5
736060	99	34	29,4	cyclictest	1076638	-21	latency_hist	21:48:33	7
736055	99	34	32,2	cyclictest	959013	-21	kworker/u16:3+events_unbound	20:57:02	5
736055	99	34	32,2	cyclictest	854244	-21	kworker/u16:1+events_unbound	20:08:53	5
736055	99	34	32,2	cyclictest	777992	-21	kworker/u16:3+events_unbound	19:58:57	5
736055	99	34	32,2	cyclictest	1278138	-21	kworker/u16:0+events_unbound	00:05:27	5
736055	99	34	32,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	23:19:12	5
736055	99	34	32,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	22:15:14	5
736055	99	34	31,2	cyclictest	825673	-21	kworker/u16:2+events_unbound	20:28:42	5
736053	99	34	32,2	cyclictest	825673	-21	kworker/u16:2+flush-8:0	20:18:55	4
736053	99	34	32,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	22:51:39	4
736053	99	34	32,2	cyclictest	1087620	-21	kworker/u16:1+events_unbound	21:54:10	4
736053	99	34	31,2	cyclictest	825673	-21	kworker/u16:2+flush-8:0	20:33:47	4
736056	99	33	31,2	cyclictest	930646	-21	kworker/u16:0+flush-8:0	21:43:58	6
736055	99	33	31,2	cyclictest	777992	-21	kworker/u16:3+flush-8:0	19:43:56	5
736055	99	33	31,2	cyclictest	1278138	-21	kworker/u16:0+events_unbound	00:01:58	5
736055	99	33	31,2	cyclictest	1220984	-21	kworker/u16:3+events_unbound	23:49:12	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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