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 #7, 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rack7slot2.osadl.org (updated Wed Nov 12, 2025 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2129290	99	136	117,7	cyclictest	2305098	-21	kworker/u4:6+events_unbound	00:28:41	0
2129290	99	127	118,7	cyclictest	2174817	-21	kworker/u4:2+events_unbound	21:53:13	0
2129291	99	124	116,6	cyclictest	2225647	-21	kworker/u4:13+events_unbound	22:58:26	1
2129291	99	117	94,9	cyclictest	2140923	-21	kworker/u4:9+events_unbound	19:52:45	1
2129290	99	115	101,6	cyclictest	2140923	-21	kworker/u4:9+events_unbound	20:37:57	0
2129290	99	112	105,5	cyclictest	2241587	-21	kworker/u4:4+events_unbound	23:38:35	0
2129291	99	111	88,6	cyclictest	2222224	-21	kworker/u4:12+events_unbound	22:28:19	1
2129290	99	111	103,6	cyclictest	2139643	-21	kworker/u4:3+events_unbound	20:17:51	0
2129290	99	111	103,6	cyclictest	2139643	-21	kworker/u4:3+events_unbound	20:17:50	0
2129291	99	104	94,7	cyclictest	2210225	-21	kworker/u4:3+events_unbound	22:15:14	1
2129290	99	103	96,5	cyclictest	2285373	-21	kworker/u4:5+events_unbound	23:53:35	0
2129290	99	103	95,6	cyclictest	2225647	-21	kworker/u4:13+events_unbound	23:33:35	0
2129290	99	103	95,6	cyclictest	2225647	-21	kworker/u4:13+events_unbound	23:33:34	0
2129291	99	101	94,5	cyclictest	2285376	-21	kworker/u4:8+events_unbound	00:18:39	1
2129291	99	100	90,8	cyclictest	2160370	-21	kworker/u4:6+events_unbound	21:08:02	1
2129290	99	99	92,5	cyclictest	2301422	-21	kworker/u4:2+events_unbound	00:08:39	0
2129290	99	99	91,6	cyclictest	2129207	-21	kworker/u4:3+events_unbound	19:27:39	0
2129291	99	97	90,6	cyclictest	2285371	-21	kworker/u4:3+events_unbound	23:48:35	1
2129290	99	96	88,6	cyclictest	2115378	-21	kworker/u4:9+events_unbound	19:17:40	0
2129291	99	94	87,5	cyclictest	2241588	-21	kworker/u4:6+events_unbound	23:23:31	1
2129291	99	94	86,6	cyclictest	2289386	-21	kworker/u4:10+events_unbound	23:53:38	1
2129291	99	85	73,6	cyclictest	2115375	-21	kworker/u4:5+events_unbound	19:22:41	1
2129291	99	83	76,5	cyclictest	2210224	-21	kworker/u4:2+events_unbound	22:13:17	1
2129291	99	83	75,6	cyclictest	2149965	-21	kworker/u4:11+events_unbound	20:52:59	1
2129291	99	80	73,5	cyclictest	2174817	-21	kworker/u4:2+events_unbound	21:58:12	1
2129291	99	78	70,6	cyclictest	2190838	-21	kworker/u4:9+events_unbound	21:48:11	1
2129291	99	78	68,7	cyclictest	2149964	-21	kworker/u4:7+events_unbound	21:23:06	1
2129291	99	77	69,6	cyclictest	2210224	-21	kworker/u4:2+events_unbound	22:38:22	1
2129290	99	75	66,7	cyclictest	2305098	-21	kworker/u4:6+events_unbound	00:13:38	0
2129291	99	74	55,7	cyclictest	2226192	-21	kworker/u4:14+events_unbound	22:48:23	1
2129291	99	74	55,7	cyclictest	2133115	-21	kworker/u4:7+events_unbound	19:30:02	1
2129291	99	73	65,6	cyclictest	2135767	-21	kworker/u4:14+events_unbound	19:57:48	1
2129290	99	73	68,3	cyclictest	2322422	-21	kworker/u4:3+events_unbound	00:38:43	0
2129291	99	72	66,4	cyclictest	2230195	-21	kworker/u4:1+events_unbound	23:15:38	1
2129291	99	72	65,5	cyclictest	2241587	-21	kworker/u4:4+events_unbound	23:38:34	1
2129291	99	70	62,5	cyclictest	2135767	-21	kworker/u4:14+events_unbound	20:00:01	1
2129291	99	69	61,6	cyclictest	2241586	-21	kworker/u4:3+events_unbound	23:03:27	1
2129291	99	69	56,10	cyclictest	37	-21	kcompactd0	22:34:30	1
2129290	99	68	6,60	cyclictest	0	-21	swapper/0	22:00:33	0
2129291	99	67	60,5	cyclictest	2133115	-21	kworker/u4:7+events_unbound	19:35:01	1
2129290	99	67	5,52	cyclictest	2248254	-21	ssh	23:00:30	0
2129291	99	66	59,5	cyclictest	2156494	-21	kworker/u4:5+events_unbound	22:03:15	1
2129290	99	65	56,7	cyclictest	2125530	-21	kworker/u4:2+events_unbound	20:50:01	0
2129290	99	65	47,10	cyclictest	2266954	-21	modprobe	23:25:00	0
2129291	99	64	57,5	cyclictest	2129289	-21	cyclictest	23:31:07	1
2129291	99	64	57,5	cyclictest	2129289	-21	cyclictest	23:31:07	1
2129291	99	64	46,6	cyclictest	2301424	-21	kworker/u4:4+events_unbound	00:10:02	1
2129290	99	64	57,5	cyclictest	2281368	-21	kworker/u4:2+events_unbound	23:43:34	0
2129290	99	64	57,5	cyclictest	2139643	-21	kworker/u4:3+events_unbound	20:25:02	0
2129290	99	64	56,5	cyclictest	2285376	-21	kworker/u4:8+events_unbound	00:17:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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