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 50 highest latencies:

System rack0slot2.osadl.org (updated Sun May 10, 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
1033102	2	50	40,7	sleep5	0	-21	swapper/5	19:07:40	5
1033435	99	47	45,2	cyclictest	1591794	-21	kworker/u16:3+events_unbound	23:58:46	5
1033435	99	47	44,2	cyclictest	1689376	-21	kworker/u16:2+flush-8:0	00:03:46	5
1033074	2	47	20,8	sleep4	0	-21	swapper/4	19:07:14	4
1033435	99	44	42,2	cyclictest	1134972	-21	kworker/u16:2+flush-8:0	20:23:46	5
1033435	99	43	41,2	cyclictest	1075991	-21	kworker/u16:3+events_unbound	19:48:46	5
1032884	2	40	3,31	sleep7	0	-21	swapper/7	19:04:37	7
1033435	99	39	37,2	cyclictest	1543943	-21	kworker/u16:1+events_unbound	23:02:58	5
1033435	99	39	37,2	cyclictest	1304404	-21	kworker/u16:4+events_unbound	22:40:26	5
1033435	99	38	36,2	cyclictest	1591794	-21	kworker/u16:3+events_unbound	23:29:15	5
1033435	99	38	36,2	cyclictest	1304404	-21	kworker/u16:4+events_unbound	22:29:31	5
1033435	99	38	36,2	cyclictest	1268537	-21	kworker/u16:1+events_unbound	21:19:43	5
1033435	99	37	35,2	cyclictest	1631027	-21	kworker/u16:0+events_unbound	23:56:07	5
1033435	99	37	35,2	cyclictest	1631027	-21	kworker/u16:0+events_unbound	23:56:07	5
1033435	99	37	35,2	cyclictest	1591794	-21	kworker/u16:3+flush-8:0	23:35:46	5
1033435	99	37	35,2	cyclictest	1591794	-21	kworker/u16:3+events_unbound	00:29:50	5
1033435	99	37	35,2	cyclictest	1304404	-21	kworker/u16:4+events_unbound	22:24:55	5
1033435	99	36	34,2	cyclictest	1374621	-21	kworker/u16:2+events_unbound	22:19:43	5
1033435	99	36	34,2	cyclictest	1374621	-21	kworker/u16:2+events_unbound	21:49:31	5
1033435	99	36	34,2	cyclictest	1374621	-21	kworker/u16:2+events_unbound	21:49:31	5
1033435	99	36	34,2	cyclictest	1134972	-21	kworker/u16:2+flush-8:0	20:13:45	5
1033435	99	36	34,2	cyclictest	1134972	-21	kworker/u16:2+events_unbound	21:12:47	5
1033435	99	36	34,2	cyclictest	1134972	-21	kworker/u16:2+events_unbound	21:12:47	5
1033435	99	36	34,2	cyclictest	1075991	-21	kworker/u16:3+events_unbound	21:37:42	5
1033435	99	35	33,2	cyclictest	1631027	-21	kworker/u16:0+events_unbound	23:46:07	5
1033435	99	35	33,2	cyclictest	1484218	-21	kworker/u16:0+events_unbound	23:12:46	5
1033435	99	35	33,2	cyclictest	1484218	-21	kworker/u16:0+events_unbound	23:05:15	5
1033435	99	35	33,2	cyclictest	1484218	-21	kworker/u16:0+events_unbound	22:37:47	5
1033435	99	35	33,2	cyclictest	1374621	-21	kworker/u16:2+events_unbound	23:26:27	5
1033435	99	35	33,2	cyclictest	1374621	-21	kworker/u16:2+events_unbound	23:18:59	5
1033435	99	35	33,2	cyclictest	1374621	-21	kworker/u16:2+events_unbound	21:58:07	5
1033435	99	35	33,2	cyclictest	1134972	-21	kworker/u16:2+events_unbound	21:16:18	5
1033431	99	35	33,2	cyclictest	1304400	-21	kworker/u16:0+events_unbound	21:48:19	4
1033435	99	34	32,2	cyclictest	1714975	-21	kworker/u16:0+events_unbound	00:35:34	5
1033435	99	34	32,2	cyclictest	1714975	-21	kworker/u16:0+events_unbound	00:35:34	5
1033435	99	34	32,2	cyclictest	1591794	-21	kworker/u16:3+events_unbound	00:27:27	5
1033435	99	34	32,2	cyclictest	1498085	-21	kworker/u16:3+events_unbound	22:55:11	5
1033435	99	34	32,2	cyclictest	1304404	-21	kworker/u16:4+events_unbound	22:15:27	5
1033435	99	34	32,2	cyclictest	1304404	-21	kworker/u16:4+events_unbound	21:42:39	5
1033435	99	34	32,2	cyclictest	1210670	-21	kworker/u16:1+events_unbound	20:53:22	5
1033435	99	33	31,2	cyclictest	1714975	-21	kworker/u16:0+events_unbound	00:15:50	5
1033435	99	33	31,2	cyclictest	1631027	-21	kworker/u16:0+events_unbound	23:52:54	5
1033435	99	33	31,2	cyclictest	1631027	-21	kworker/u16:0+events_unbound	23:43:02	5
1033435	99	33	31,2	cyclictest	1484218	-21	kworker/u16:0+events_unbound	22:45:28	5
1033435	99	33	31,2	cyclictest	1353860	-21	kworker/u16:1+events_unbound	21:45:40	5
1033435	99	33	31,2	cyclictest	1304404	-21	kworker/u16:4+flush-8:0	21:24:11	5
1033435	99	33	31,2	cyclictest	1304404	-21	kworker/u16:4+events_unbound	22:02:07	5
1033435	99	33	31,2	cyclictest	1304404	-21	kworker/u16:4+events_unbound	21:29:51	5
1033435	99	33	30,2	cyclictest	1134972	-21	kworker/u16:2+events_unbound	20:33:22	5
1033435	99	32	30,2	cyclictest	1689376	-21	kworker/u16:2+events_unbound	00:10:47	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