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 Wed May 27, 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
2398690	2	57	46,8	sleep5	0	-21	swapper/5	19:05:04	5
2399130	99	54	52,2	cyclictest	2603737	-21	kworker/u16:3+events_unbound	20:52:39	5
2399130	99	54	52,2	cyclictest	2603737	-21	kworker/u16:3+events_unbound	20:52:39	5
2398755	2	53	27,8	sleep4	0	-21	swapper/4	19:05:59	4
2399130	99	49	47,2	cyclictest	3020941	-21	kworker/u16:4+events_unbound	23:57:42	5
2399130	99	44	41,2	cyclictest	2705583	-21	kworker/u16:0+events_unbound	21:42:14	5
2397219	2	40	3,31	sleep7	0	-21	swapper/7	19:02:41	7
2399135	99	39	37,2	cyclictest	2984405	-21	kworker/u16:3+events_unbound	00:27:26	6
2399130	99	39	37,2	cyclictest	2832540	-21	kworker/u16:0+events_unbound	23:29:43	5
2399130	99	38	36,2	cyclictest	3018553	-21	kworker/u16:1+events_unbound	23:42:58	5
2399130	99	38	36,2	cyclictest	2705583	-21	kworker/u16:0+events_unbound	21:53:55	5
2399130	99	37	35,2	cyclictest	3018553	-21	kworker/u16:1+events_unbound	00:23:18	5
2399130	99	37	35,2	cyclictest	3018553	-21	kworker/u16:1+events_unbound	00:08:42	5
2399130	99	37	35,2	cyclictest	2936238	-21	kworker/u16:3+events_unbound	23:12:15	5
2399130	99	37	35,2	cyclictest	2766799	-21	kworker/u16:2+events_unbound	22:42:10	5
2399130	99	37	35,2	cyclictest	2730439	-21	kworker/u16:1+events_unbound	22:29:18	5
2399130	99	37	35,2	cyclictest	2682291	-21	kworker/u16:3+events_unbound	21:58:31	5
2399139	99	36	31,4	cyclictest	2778874	-21	latency_hist	22:07:12	7
2399130	99	36	34,2	cyclictest	2730439	-21	kworker/u16:1+events_unbound	22:13:47	5
2399130	99	36	34,2	cyclictest	2730439	-21	kworker/u16:1+events_unbound	22:13:47	5
2399130	99	35	33,2	cyclictest	3118071	-21	kworker/u16:0+events_unbound	00:29:02	5
2399130	99	35	33,2	cyclictest	3018553	-21	kworker/u16:1+events_unbound	00:17:10	5
2399130	99	35	33,2	cyclictest	3018553	-21	kworker/u16:1+events_unbound	00:17:10	5
2399130	99	35	33,2	cyclictest	2984405	-21	kworker/u16:3+events_unbound	23:33:51	5
2399130	99	35	33,2	cyclictest	2984405	-21	kworker/u16:3+events_unbound	23:33:51	5
2399130	99	35	33,2	cyclictest	2888364	-21	kworker/u16:1+events_unbound	23:12:10	5
2399130	99	35	33,2	cyclictest	2832540	-21	kworker/u16:0+events_unbound	23:39:43	5
2399130	99	35	33,2	cyclictest	2832540	-21	kworker/u16:0+events_unbound	23:03:26	5
2399130	99	35	33,2	cyclictest	2832540	-21	kworker/u16:0+events_unbound	22:59:51	5
2399130	99	35	33,2	cyclictest	2766799	-21	kworker/u16:2+flush-8:0	22:07:43	5
2399130	99	35	33,2	cyclictest	2766799	-21	kworker/u16:2+events_unbound	23:25:27	5
2399130	99	35	33,2	cyclictest	2730439	-21	kworker/u16:1+events_unbound	22:19:10	5
2399130	99	35	32,2	cyclictest	2984405	-21	kworker/u16:3+events_unbound	23:49:31	5
2399130	99	35	32,2	cyclictest	2832540	-21	kworker/u16:0+events_unbound	23:52:15	5
2399130	99	34	32,2	cyclictest	2851566	-21	kworker/u16:3+events_unbound	22:49:18	5
2399130	99	34	32,2	cyclictest	2682291	-21	kworker/u16:3+events_unbound	21:41:03	5
2399130	99	34	32,2	cyclictest	2682291	-21	kworker/u16:3+events_unbound	21:27:58	5
2399130	99	34	32,2	cyclictest	2643791	-21	kworker/u16:1+flush-8:0	21:35:51	5
2399130	99	34	32,2	cyclictest	2643791	-21	kworker/u16:1+flush-8:0	21:35:51	5
2398608	2	34	24,7	sleep6	0	-21	swapper/6	19:03:52	6
2399139	99	33	32,0	cyclictest	0	-21	swapper/7	21:37:50	7
2399130	99	33	31,2	cyclictest	2832540	-21	kworker/u16:0+flush-8:0	22:52:46	5
2399130	99	33	31,2	cyclictest	2832540	-21	kworker/u16:0+flush-8:0	22:52:46	5
2399130	99	33	30,2	cyclictest	2730439	-21	kworker/u16:1+flush-8:0	22:22:22	5
2399126	99	33	31,2	cyclictest	2682291	-21	kworker/u16:3+events_unbound	21:42:35	4
2399130	99	32	30,2	cyclictest	3118071	-21	kworker/u16:0+flush-8:0	00:35:23	5
2399130	99	32	30,2	cyclictest	2984405	-21	kworker/u16:3+events_unbound	00:18:54	5
2399130	99	32	30,2	cyclictest	2766799	-21	kworker/u16:2+events_unbound	23:21:03	5
2399130	99	32	30,2	cyclictest	2766799	-21	kworker/u16:2+events_unbound	22:46:18	5
2399130	99	32	30,2	cyclictest	2766799	-21	kworker/u16:2+events_unbound	22:06:51	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