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 Mon Aug 31, 2026 00:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
6163	89	65	0,61	rtkit-daemon	0	-21	swapper/5	19:09:44	5
6163	89	65	0,61	rtkit-daemon	0	-21	swapper/5	19:09:44	5
83383	2	56	44,8	sleep4	0	-21	swapper/4	19:06:05	4
83383	2	56	44,8	sleep4	0	-21	swapper/4	19:06:05	4
74324	2	54	20,29	sleep7	0	-21	swapper/7	19:04:48	7
74324	2	54	20,29	sleep7	0	-21	swapper/7	19:04:48	7
83926	99	53	47,4	cyclictest	686587	-21	latency_hist	23:39:42	7
83917	99	36	34,2	cyclictest	686979	-21	kworker/u16:4+events_unbound	23:53:40	4
83917	99	36	34,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	23:13:25	4
83917	99	36	34,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	23:07:12	4
83917	99	36	34,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	23:07:12	4
83917	99	36	34,2	cyclictest	443351	-21	kworker/u16:3+events_unbound	22:06:29	4
83917	99	36	34,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:45:44	4
83917	99	36	34,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:40:49	4
83917	99	36	34,2	cyclictest	345717	-21	kworker/u16:0+events_unbound	21:56:46	4
83917	99	36	34,2	cyclictest	253140	-21	kworker/u16:3+events_unbound	21:17:57	4
83917	99	36	33,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	21:47:41	4
83917	99	36	33,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	21:47:41	4
83917	99	35	33,2	cyclictest	735805	-21	kworker/u16:1+events_unbound	00:34:13	4
83917	99	35	33,2	cyclictest	613865	-21	kworker/u16:3+events_unbound	23:32:05	4
83917	99	35	33,2	cyclictest	613865	-21	kworker/u16:3+events_unbound	00:04:00	4
83917	99	35	33,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	23:03:13	4
83917	99	35	33,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	22:33:33	4
83917	99	35	33,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	21:41:45	4
83917	99	35	33,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	21:41:45	4
83917	99	35	33,2	cyclictest	345717	-21	kworker/u16:0+events_unbound	21:28:14	4
83917	99	35	33,2	cyclictest	300869	-21	kworker/u16:5+events_unbound	21:51:45	4
83917	99	35	33,2	cyclictest	194951	-21	kworker/u16:2+events_unbound	21:22:34	4
83394	2	35	25,7	sleep6	0	-21	swapper/6	19:06:15	6
83394	2	35	25,7	sleep6	0	-21	swapper/6	19:06:15	6
83917	99	34	32,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	23:59:20	4
83917	99	34	32,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	22:53:25	4
83917	99	34	32,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	23:36:05	4
83917	99	34	32,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:17:29	4
83922	99	33	31,2	cyclictest	300869	-21	kworker/u16:5+events_unbound	21:49:42	6
83922	99	33	31,2	cyclictest	300869	-21	kworker/u16:5+events_unbound	21:49:42	6
83917	99	33	31,2	cyclictest	735805	-21	kworker/u16:1+events_unbound	00:27:13	4
83917	99	33	31,2	cyclictest	735805	-21	kworker/u16:1+events_unbound	00:27:13	4
83917	99	33	31,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	23:25:20	4
83917	99	33	31,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	23:22:05	4
83917	99	33	31,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	23:18:57	4
83917	99	33	31,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	23:45:45	4
83917	99	33	31,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	23:45:45	4
83917	99	33	31,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:36:48	4
83917	99	33	31,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	21:38:05	4
83917	99	33	31,2	cyclictest	345717	-21	kworker/u16:0+events_unbound	22:24:24	4
83917	99	33	31,2	cyclictest	300869	-21	kworker/u16:5+events_unbound	21:30:29	4
83922	99	32	30,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	00:01:08	6
83917	99	32	30,2	cyclictest	735805	-21	kworker/u16:1+events_unbound	00:15:41	4
83917	99	32	30,2	cyclictest	443351	-21	kworker/u16:3+events_unbound	22:59:17	4
83917	99	32	30,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:04:41	4
83917	99	32	30,2	cyclictest	345717	-21	kworker/u16:0+events_unbound	22:14:37	4
83917	99	32	30,2	cyclictest	194951	-21	kworker/u16:2+events_unbound	21:10:57	4
83926	99	31	29,1	cyclictest	0	-21	swapper/7	22:53:54	7
83917	99	31	29,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	00:22:12	4
83917	99	31	29,2	cyclictest	443351	-21	kworker/u16:3+events_unbound	22:25:24	4
83917	99	31	29,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	23:40:56	4
83926	99	30	24,5	cyclictest	93508	-21	latency_hist	19:14:43	7
83922	99	30	28,2	cyclictest	253140	-21	kworker/u16:3+events_unbound	21:13:17	6
83922	99	30	28,2	cyclictest	253140	-21	kworker/u16:3+events_unbound	20:43:45	6
83922	99	30	28,2	cyclictest	117130	-21	kworker/u16:0+events_unbound	19:59:00	6
83917	99	30	28,2	cyclictest	735805	-21	kworker/u16:1+events_unbound	00:38:24	4
83917	99	30	28,2	cyclictest	735805	-21	kworker/u16:1+events_unbound	00:12:44	4
83917	99	30	28,2	cyclictest	253140	-21	kworker/u16:3+events_unbound	20:41:14	4
83917	99	30	28,2	cyclictest	165575	-21	kworker/u16:3+events_unbound	20:22:54	4
83922	99	29	27,2	cyclictest	443351	-21	kworker/u16:3+events_unbound	22:51:18	6
83922	99	29	27,2	cyclictest	36355	-21	kworker/u16:4+events_unbound	19:38:01	6
83922	99	29	27,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:24:18	6
83922	99	29	27,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:16:58	6
83919	99	29	27,2	cyclictest	194951	-21	kworker/u16:2+flush-8:0	21:00:45	5
83917	99	29	27,2	cyclictest	613865	-21	kworker/u16:3+events_unbound	00:09:09	4
83922	99	28	26,2	cyclictest	686979	-21	kworker/u16:4+events_unbound	23:52:22	6
83922	99	28	26,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	00:04:49	6
83922	99	28	26,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	23:12:34	6
83922	99	28	26,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	23:45:51	6
83922	99	28	26,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	23:45:51	6
83922	99	28	26,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	21:51:34	6
83919	99	28	26,1	cyclictest	0	-21	swapper/5	19:34:58	5
83917	99	28	26,2	cyclictest	253140	-21	kworker/u16:3+events_unbound	20:53:53	4
83926	99	27	0,26	cyclictest	601469	-21	latency_hist	23:04:42	7
83922	99	27	25,2	cyclictest	735805	-21	kworker/u16:1+events_unbound	00:32:55	6
83922	99	27	25,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	22:58:34	6
83922	99	27	25,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	23:07:10	6
83922	99	27	25,2	cyclictest	479987	-21	kworker/u16:2+events_unbound	23:07:10	6
83922	99	27	25,2	cyclictest	443351	-21	kworker/u16:3+events_unbound	22:06:44	6
83922	99	27	25,2	cyclictest	36355	-21	kworker/u16:4+events_unbound	19:21:52	6
83922	99	27	25,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:01:18	6
83922	99	27	25,2	cyclictest	300869	-21	kworker/u16:5+events_unbound	21:21:47	6
83922	99	27	25,2	cyclictest	19826	-21	kworker/u16:1+events_unbound	20:03:02	6
83922	99	27	25,2	cyclictest	165575	-21	kworker/u16:3+events_unbound	19:53:06	6
83922	99	27	24,2	cyclictest	345717	-21	kworker/u16:0+events_unbound	21:54:47	6
672514	2	27	0,1	chrt	672513	-21	rm	23:30:59	7
667343	2	27	0,1	chrt	0	-21	swapper/6	23:30:02	6
83922	99	26	24,2	cyclictest	735805	-21	kworker/u16:1+events_unbound	00:16:22	6
83922	99	26	24,2	cyclictest	613865	-21	kworker/u16:3+events_unbound	23:24:35	6
83922	99	26	24,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	23:56:46	6
83922	99	26	24,2	cyclictest	565135	-21	kworker/u16:0+events_unbound	00:22:30	6
83922	99	26	24,2	cyclictest	443351	-21	kworker/u16:3+events_unbound	22:43:27	6
83922	99	26	24,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	23:37:27	6
83922	99	26	24,2	cyclictest	345718	-21	kworker/u16:1+events_unbound	22:48:22	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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