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 Wed Apr 02, 2025 00:43:37)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
793227	2	57	47,7	sleep6	0	-21	swapper/6	03:35:46	6
793451	2	53	43,7	sleep5	0	-21	swapper/5	03:38:58	5
793246	2	53	20,29	sleep7	0	-21	swapper/7	03:36:03	7
793290	2	49	39,7	sleep4	0	-21	swapper/4	03:36:40	4
793783	99	39	0,37	cyclictest	944232	-21	latency_hist	04:59:11	7
793783	99	35	0,33	cyclictest	643	-21	systemd-journal	04:04:12	7
793776	99	32	30,2	cyclictest	1120768	-21	kworker/u16:1+events_unbound	06:45:21	5
793771	99	32	30,2	cyclictest	1030046	-21	kworker/u16:5+flush-8:0	06:09:41	4
793776	99	31	29,2	cyclictest	1030046	-21	kworker/u16:5+events_unbound	06:20:22	5
793771	99	31	29,2	cyclictest	1030046	-21	kworker/u16:5+events_unbound	06:30:12	4
793776	99	30	28,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	07:54:20	5
793776	99	30	28,2	cyclictest	827650	-21	kworker/u16:4+events_unbound	04:05:21	5
793776	99	30	28,2	cyclictest	1185268	-21	kworker/u16:1+events_unbound	07:16:21	5
793783	99	29	0,27	cyclictest	1260973	-21	latency_hist	08:04:10	7
793779	99	29	27,2	cyclictest	1234895	-21	kworker/u16:5+flush-8:0	08:29:29	6
793776	99	29	27,2	cyclictest	990482	-21	kworker/u16:2+events_unbound	05:51:21	5
793779	99	28	26,2	cyclictest	1006765	-21	kworker/u16:3+events_unbound	05:29:29	6
793776	99	28	26,2	cyclictest	1030046	-21	kworker/u16:5+events_unbound	05:47:22	5
793783	99	27	24,1	cyclictest	0	-21	swapper/7	08:24:36	7
793779	99	27	25,2	cyclictest	990482	-21	kworker/u16:2+events_unbound	06:04:26	6
793779	99	27	25,2	cyclictest	849726	-21	kworker/u16:0+events_unbound	04:29:26	6
793779	99	27	24,2	cyclictest	1153312	-21	kworker/u16:2+events_unbound	06:59:13	6
793776	99	27	25,2	cyclictest	990482	-21	kworker/u16:2+events_unbound	06:10:36	5
793776	99	27	25,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	04:58:21	5
793776	99	27	25,2	cyclictest	779745	-21	kworker/u16:2+flush-8:0	03:49:22	5
793776	99	27	25,2	cyclictest	1304012	-21	kworker/u16:0+events_unbound	09:09:09	5
793776	99	27	25,2	cyclictest	1304012	-21	kworker/u16:0+events_unbound	08:37:20	5
793771	99	27	23,3	cyclictest	990482	-21	kworker/u16:2+flush-8:0	06:04:21	4
793779	99	26	24,2	cyclictest	827650	-21	kworker/u16:4+flush-8:0	04:24:37	6
793779	99	26	24,2	cyclictest	1132531	-21	kworker/u16:3+flush-8:0	07:59:33	6
793779	99	26	23,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	07:39:13	6
793776	99	26	24,2	cyclictest	827650	-21	kworker/u16:4+events_unbound	04:11:37	5
793776	99	26	24,2	cyclictest	827650	-21	kworker/u16:4+events_unbound	03:59:10	5
793776	99	26	24,2	cyclictest	1234895	-21	kworker/u16:5+events_unbound	08:23:21	5
793771	99	26	24,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	07:12:21	4
793771	99	26	23,2	cyclictest	1234895	-21	kworker/u16:5+flush-8:0	08:29:21	4
793771	99	26	23,2	cyclictest	1153312	-21	kworker/u16:2+events_unbound	08:36:21	4
793776	99	25	23,2	cyclictest	741476	-21	kworker/u16:3+events_unbound	04:02:22	5
793776	99	25	23,2	cyclictest	1185268	-21	kworker/u16:1+events_unbound	07:33:21	5
793776	99	25	23,2	cyclictest	1006765	-21	kworker/u16:3+events_unbound	05:30:18	5
793771	99	25	23,2	cyclictest	990482	-21	kworker/u16:2+flush-8:0	06:14:22	4
793771	99	25	23,2	cyclictest	849726	-21	kworker/u16:0+flush-8:0	04:04:33	4
793776	99	24	22,2	cyclictest	943922	-21	kworker/u16:0+flush-8:0	05:04:45	5
793776	99	24	22,2	cyclictest	879870	-21	kworker/u16:5+flush-8:0	04:36:17	5
793776	99	24	22,2	cyclictest	870214	-21	kworker/u16:1+flush-8:0	04:21:37	5
793776	99	24	22,2	cyclictest	870214	-21	kworker/u16:1+flush-8:0	04:21:37	5
793776	99	24	22,2	cyclictest	1026719	-21	kworker/u16:4+events_unbound	07:05:21	5
793776	99	24	21,2	cyclictest	1324950	-21	kworker/u16:4+events_unbound	08:56:21	5
793771	99	24	22,2	cyclictest	990482	-21	kworker/u16:2+events_unbound	05:50:57	4
793771	99	24	22,2	cyclictest	1132531	-21	kworker/u16:3+events_unbound	07:06:21	4
793771	99	24	21,2	cyclictest	1153312	-21	kworker/u16:2+flush-8:0	07:15:21	4
793776	99	23	21,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	06:42:17	5
793776	99	23	21,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	06:42:17	5
793776	99	23	21,2	cyclictest	790198	-21	kworker/u16:5+events_unbound	03:47:21	5
793776	99	23	21,2	cyclictest	1153312	-21	kworker/u16:2+events_unbound	08:12:34	5
793776	99	23	21,2	cyclictest	1132531	-21	kworker/u16:3+events_unbound	07:04:10	5
793776	99	23	20,2	cyclictest	1026719	-21	kworker/u16:4+flush-8:0	06:34:13	5
793771	99	23	21,2	cyclictest	990482	-21	kworker/u16:2+flush-8:0	05:24:35	4
793771	99	23	21,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	05:04:30	4
793771	99	23	21,2	cyclictest	1026719	-21	kworker/u16:4+events_unbound	06:24:12	4
793783	99	22	0,20	cyclictest	922575	-21	latency_hist	04:44:12	7
793779	99	22	20,2	cyclictest	879870	-21	kworker/u16:5+events_unbound	04:49:14	6
793779	99	22	20,2	cyclictest	827650	-21	kworker/u16:4+flush-8:0	05:14:41	6
793779	99	22	20,2	cyclictest	1185268	-21	kworker/u16:1+flush-8:0	07:34:11	6
793776	99	22	20,2	cyclictest	990482	-21	kworker/u16:2+events_unbound	06:28:50	5
793776	99	22	20,2	cyclictest	943922	-21	kworker/u16:0+flush-8:0	08:16:16	5
793776	99	22	20,2	cyclictest	943922	-21	kworker/u16:0+flush-8:0	08:16:16	5
793776	99	22	20,2	cyclictest	827650	-21	kworker/u16:4+events_unbound	05:28:25	5
793776	99	22	20,2	cyclictest	1185268	-21	kworker/u16:1+flush-8:0	07:14:09	5
793776	99	22	20,2	cyclictest	1153312	-21	kworker/u16:2+flush-8:0	07:54:05	5
793776	99	22	20,2	cyclictest	1153312	-21	kworker/u16:2+events_unbound	06:50:18	5
793776	99	22	20,2	cyclictest	1132531	-21	kworker/u16:3+events_unbound	08:03:37	5
793771	99	22	20,2	cyclictest	827650	-21	kworker/u16:4+events_unbound	04:59:29	4
793771	99	22	19,2	cyclictest	779745	-21	kworker/u16:2+events_unbound	04:09:28	4
793771	99	22	19,2	cyclictest	1228615	-21	kworker/u16:4+events_unbound	07:44:32	4
793779	99	21	19,2	cyclictest	741476	-21	kworker/u16:3+flush-8:0	03:44:17	6
793779	99	21	18,2	cyclictest	1153312	-21	kworker/u16:2+events_unbound	08:19:13	6
793776	99	21	19,2	cyclictest	990482	-21	kworker/u16:2+events_unbound	05:55:13	5
793776	99	21	19,2	cyclictest	879870	-21	kworker/u16:5+events_unbound	05:15:29	5
793776	99	21	19,2	cyclictest	879870	-21	kworker/u16:5+events_unbound	05:11:01	5
793776	99	21	19,2	cyclictest	879870	-21	kworker/u16:5+events_unbound	04:48:29	5
793776	99	21	19,2	cyclictest	1335315	-21	kworker/u16:1+events_unbound	08:50:37	5
793776	99	21	18,2	cyclictest	990482	-21	kworker/u16:2+flush-8:0	06:14:25	5
793771	99	21	19,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	06:26:21	4
793771	99	21	19,2	cyclictest	827650	-21	kworker/u16:4+flush-8:0	05:10:56	4
793771	99	21	19,2	cyclictest	790198	-21	kworker/u16:5+events_unbound	04:00:22	4
793771	99	21	19,2	cyclictest	1185268	-21	kworker/u16:1+events_unbound	07:38:22	4
793771	99	21	19,2	cyclictest	1120768	-21	kworker/u16:1+events_unbound	06:43:20	4
793771	99	21	19,2	cyclictest	1120768	-21	kworker/u16:1+events_unbound	06:43:20	4
793771	99	21	18,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	05:59:21	4
793783	99	20	0,19	cyclictest	911221	-21	cut	04:34:11	7
793779	99	20	19,1	cyclictest	990482	-21	kworker/u16:2+flush-8:0	05:24:33	6
793779	99	20	17,2	cyclictest	1026719	-21	kworker/u16:4+flush-8:0	05:59:06	6
793776	99	20	18,2	cyclictest	990482	-21	kworker/u16:2+flush-8:0	06:05:33	5
793776	99	20	18,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	05:01:50	5
793776	99	20	18,2	cyclictest	1153312	-21	kworker/u16:2+flush-8:0	06:58:17	5
793776	99	20	17,2	cyclictest	943922	-21	kworker/u16:0+events_unbound	07:44:14	5
793771	99	20	18,2	cyclictest	870214	-21	kworker/u16:1+flush-8:0	04:14:21	4
793771	99	20	18,2	cyclictest	790198	-21	kworker/u16:5+events_unbound	03:39:39	4
793771	99	20	18,2	cyclictest	1153312	-21	kworker/u16:2+flush-8:0	06:59:26	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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