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 May 13, 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
769530	2	62	52,7	sleep4	0	-21	swapper/4	19:04:04	4
770105	99	55	50,4	cyclictest	1077204	-21	latency_hist	21:38:07	7
770099	99	50	48,2	cyclictest	1234503	-21	kworker/u16:0+events_unbound	00:08:39	5
769820	2	50	40,7	sleep5	0	-21	swapper/5	19:08:06	5
770100	99	45	43,2	cyclictest	1210346	-21	kworker/u16:2+flush-8:0	22:38:08	6
768979	2	41	6,29	sleep7	0	-21	swapper/7	19:03:43	7
770099	99	39	37,2	cyclictest	995094	-21	kworker/u16:1+events_unbound	21:30:39	5
770099	99	39	37,2	cyclictest	1210346	-21	kworker/u16:2+events_unbound	23:55:47	5
770099	99	38	36,2	cyclictest	1343314	-21	kworker/u16:1+flush-8:0	23:50:48	5
770099	99	38	36,2	cyclictest	1135273	-21	kworker/u16:1+events_unbound	22:52:03	5
770099	99	37	35,2	cyclictest	1343314	-21	kworker/u16:1+events_unbound	23:35:39	5
770099	99	37	35,2	cyclictest	1234503	-21	kworker/u16:0+events_unbound	00:06:03	5
770099	99	37	35,2	cyclictest	1113487	-21	kworker/u16:4+events_unbound	22:04:12	5
770099	99	36	34,2	cyclictest	975895	-21	kworker/u16:3+events_unbound	21:08:48	5
770099	99	36	34,2	cyclictest	760303	-21	kworker/u16:0+flush-8:0	20:13:34	5
770099	99	36	34,2	cyclictest	1210346	-21	kworker/u16:2+events_unbound	23:30:44	5
770099	99	36	34,2	cyclictest	1210346	-21	kworker/u16:2+events_unbound	22:55:04	5
770099	99	36	34,2	cyclictest	1161110	-21	kworker/u16:0+flush-8:0	22:23:47	5
770099	99	36	34,2	cyclictest	1135273	-21	kworker/u16:1+flush-8:0	22:39:27	5
770099	99	36	34,2	cyclictest	1135273	-21	kworker/u16:1+events_unbound	23:10:23	5
770099	99	36	34,2	cyclictest	1135273	-21	kworker/u16:1+events_unbound	23:10:23	5
770099	99	35	33,2	cyclictest	995094	-21	kworker/u16:1+events_unbound	21:25:36	5
770099	99	35	33,2	cyclictest	1343314	-21	kworker/u16:1+events_unbound	23:58:47	5
770099	99	35	33,2	cyclictest	1234503	-21	kworker/u16:0+flush-8:0	23:18:51	5
770099	99	35	33,2	cyclictest	1234503	-21	kworker/u16:0+events_unbound	23:24:23	5
770099	99	35	33,2	cyclictest	1234503	-21	kworker/u16:0+events_unbound	00:24:39	5
770099	99	35	33,2	cyclictest	1135273	-21	kworker/u16:1+events_unbound	22:35:16	5
770099	99	35	33,2	cyclictest	1135273	-21	kworker/u16:1+events_unbound	22:16:23	5
770099	99	35	33,2	cyclictest	1037760	-21	kworker/u16:3+events_unbound	21:50:27	5
770099	99	35	33,2	cyclictest	1037760	-21	kworker/u16:3+events_unbound	21:39:27	5
770105	99	34	32,1	cyclictest	1004721	-21	diskmemload	22:27:19	7
770105	99	34	29,4	cyclictest	1343273	-21	latency_hist	23:28:08	7
770099	99	34	32,2	cyclictest	1343314	-21	kworker/u16:1+events_unbound	23:42:20	5
770099	99	34	32,2	cyclictest	1234503	-21	kworker/u16:0+flush-8:0	23:47:59	5
770099	99	34	32,2	cyclictest	1210346	-21	kworker/u16:2+events_unbound	22:44:12	5
770099	99	34	32,2	cyclictest	1161110	-21	kworker/u16:0+flush-8:0	22:29:44	5
770099	99	34	32,2	cyclictest	1135273	-21	kworker/u16:1+events_unbound	23:00:35	5
770099	99	34	32,2	cyclictest	1135273	-21	kworker/u16:1+events_unbound	22:19:24	5
770099	99	34	32,2	cyclictest	1113487	-21	kworker/u16:4+events_unbound	22:09:03	5
770099	99	34	32,2	cyclictest	1113487	-21	kworker/u16:4+events_unbound	21:56:11	5
770099	99	34	32,2	cyclictest	1016793	-21	kworker/u16:0+events_unbound	21:34:00	5
770100	99	33	30,2	cyclictest	1210346	-21	kworker/u16:2+events_unbound	23:18:20	6
770099	99	33	31,2	cyclictest	995094	-21	kworker/u16:1+events_unbound	21:45:24	5
770099	99	33	31,2	cyclictest	1476414	-21	kworker/u16:3+events_unbound	00:32:59	5
770099	99	33	31,2	cyclictest	1234503	-21	kworker/u16:0+events_unbound	00:33:11	5
770099	99	33	31,2	cyclictest	1037760	-21	kworker/u16:3+events_unbound	21:20:55	5
770099	99	32	30,2	cyclictest	995094	-21	kworker/u16:1+flush-8:0	21:14:28	5
770099	99	32	30,2	cyclictest	1113487	-21	kworker/u16:4+flush-8:0	22:00:43	5
770099	99	32	29,2	cyclictest	1135273	-21	kworker/u16:1+flush-8:0	23:13:15	5
769713	2	32	22,7	sleep6	0	-21	swapper/6	19:06:38	6
770105	99	31	30,0	cyclictest	0	-21	swapper/7	21:08:23	7
770105	99	31	0,29	cyclictest	635	-21	systemd-journal	22:33:02	7
770100	99	31	29,2	cyclictest	812663	-21	kworker/u16:1+flush-8:0	19:48:39	6
770099	99	31	29,2	cyclictest	1210346	-21	kworker/u16:2+flush-8:0	00:21:00	5
770099	99	31	29,2	cyclictest	1210346	-21	kworker/u16:2+events_unbound	00:14:23	5
770099	99	31	29,2	cyclictest	1135273	-21	kworker/u16:1+events_unbound	23:07:52	5
770100	99	30	28,2	cyclictest	1161110	-21	kworker/u16:0+flush-8:0	22:18:03	6
770095	99	30	27,2	cyclictest	1135273	-21	kworker/u16:1+flush-8:0	23:13:23	4
770105	99	29	28,0	cyclictest	0	-21	swapper/7	23:59:07	7
770105	99	28	23,4	cyclictest	1137738	-21	latency_hist	22:03:08	7
770100	99	27	25,2	cyclictest	1234503	-21	kworker/u16:0+flush-8:0	00:28:31	6
770100	99	27	24,2	cyclictest	1210346	-21	kworker/u16:2+flush-8:0	00:33:27	6
770099	99	27	25,2	cyclictest	779614	-21	kworker/u16:2+flush-8:0	19:28:47	5
770099	99	27	25,2	cyclictest	779614	-21	kworker/u16:2+events_unbound	21:00:47	5
770105	99	26	23,2	cyclictest	878753	-21	ntp_states	19:58:32	7
770100	99	26	23,2	cyclictest	899295	-21	kworker/u16:1+flush-8:0	20:48:03	6
770105	99	25	24,0	cyclictest	0	-21	swapper/7	21:15:07	7
770099	99	25	23,2	cyclictest	779614	-21	kworker/u16:2+events_unbound	19:39:13	5
770099	99	25	23,2	cyclictest	779614	-21	kworker/u16:2+events_unbound	19:39:13	5
770099	99	25	22,2	cyclictest	899295	-21	kworker/u16:1+events_unbound	20:48:20	5
770105	99	24	22,1	cyclictest	1379623	-21	ssh	23:43:08	7
770105	99	24	22,1	cyclictest	0	-21	swapper/7	00:22:12	7
770105	99	24	21,2	cyclictest	124	-21	kswapd0	23:03:21	7
770105	99	24	20,2	cyclictest	1253616	-21	ssh	22:48:28	7
770100	99	24	22,2	cyclictest	760303	-21	kworker/u16:0+flush-8:0	20:33:03	6
770099	99	24	22,2	cyclictest	779614	-21	kworker/u16:2+events_unbound	20:04:18	5
770099	99	24	22,2	cyclictest	760303	-21	kworker/u16:0+events_unbound	19:46:47	5
770105	99	23	22,0	cyclictest	0	-21	swapper/7	23:15:08	7
770105	99	23	22,0	cyclictest	0	-21	swapper/7	22:59:07	7
770105	99	23	21,1	cyclictest	1147559	-21	ssh	22:03:52	7
770105	99	23	0,21	cyclictest	1706	-21	dockerd	23:52:04	7
770100	99	23	21,2	cyclictest	760303	-21	kworker/u16:0+flush-8:0	20:08:33	6
770099	99	23	21,2	cyclictest	889473	-21	kworker/u16:4+events_unbound	20:09:19	5
770105	99	22	21,0	cyclictest	0	-21	swapper/7	00:28:27	7
770105	99	22	0,20	cyclictest	1185393	-21	sshd-session	22:21:47	7
770100	99	22	20,2	cyclictest	760303	-21	kworker/u16:0+flush-8:0	20:23:03	6
770100	99	22	20,2	cyclictest	1234503	-21	kworker/u16:0+flush-8:0	23:13:33	6
770099	99	22	20,2	cyclictest	860436	-21	kworker/u16:3+events_unbound	19:57:47	5
770099	99	22	20,2	cyclictest	779614	-21	kworker/u16:2+flush-8:0	19:20:28	5
770105	99	21	20,0	cyclictest	0	-21	swapper/7	22:34:51	7
770105	99	21	20,0	cyclictest	0	-21	swapper/7	21:42:11	7
770105	99	21	19,1	cyclictest	1362401	-21	ssh	23:33:28	7
770105	99	21	19,1	cyclictest	1172808	-21	ssh	22:15:54	7
770099	99	21	19,2	cyclictest	779614	-21	kworker/u16:2+flush-8:0	20:46:19	5
770099	99	21	18,2	cyclictest	3386109	-21	kworker/u16:3+events_unbound	19:10:20	5
770105	99	20	19,0	cyclictest	0	-21	swapper/7	22:11:59	7
770100	99	20	18,2	cyclictest	760303	-21	kworker/u16:0+events_unbound	20:58:32	6
770099	99	20	18,2	cyclictest	779614	-21	kworker/u16:2+events_unbound	19:52:56	5
770099	99	20	18,2	cyclictest	760303	-21	kworker/u16:0+flush-8:0	20:23:24	5
770099	99	20	18,2	cyclictest	760303	-21	kworker/u16:0+flush-8:0	20:23:24	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