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 100 highest latencies:

System rack7slot2.osadl.org (updated Wed May 13, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2183471	99	91	83,6	cyclictest	2195016	-21	kworker/u4:3+events_unbound	20:02:13	1
2183470	99	88	80,6	cyclictest	2191091	-21	kworker/u4:16+events_unbound	19:52:13	0
2183471	99	76	68,6	cyclictest	2188550	-21	kworker/u4:15+events_unbound	21:02:25	1
2183470	99	73	64,6	cyclictest	2216763	-21	kworker/u4:11+events_unbound	22:02:39	0
2183470	99	73	54,6	cyclictest	2256121	-21	kworker/u4:0+events_unbound	21:57:39	0
2183471	99	66	58,6	cyclictest	2273651	-21	kworker/u4:9+events_unbound	22:42:47	1
2183471	99	64	57,5	cyclictest	2338312	-21	kworker/u4:16+events_unbound	23:32:57	1
2183471	99	64	57,5	cyclictest	2338312	-21	kworker/u4:16+events_unbound	23:32:56	1
2183470	99	64	52,10	cyclictest	2301282	-21	ssh	22:49:57	0
2183471	99	63	43,7	cyclictest	2360296	-21	kworker/u4:14+events_unbound	23:58:02	1
2183471	99	62	53,6	cyclictest	2191091	-21	kworker/u4:16+events_unbound	20:47:24	1
2183471	99	60	44,6	cyclictest	2372879	-21	kworker/u4:16+events_unbound	00:20:59	1
2183471	99	59	48,9	cyclictest	0	-21	swapper/1	22:30:14	1
2183471	99	59	48,9	cyclictest	0	-21	swapper/1	22:30:13	1
2183470	99	59	51,6	cyclictest	2351462	-21	kworker/u4:5+events_unbound	00:03:04	0
2183470	99	59	51,6	cyclictest	2348963	-21	latency_hist	23:45:01	0
2183470	99	58	41,15	cyclictest	2358135	-21	grep	23:55:19	0
2183470	99	58	40,16	cyclictest	2387933	-21	munin-plugin-st	00:30:00	0
2183470	99	58	35,21	cyclictest	2379927	-21	fschecks_time	00:20:19	0
2183471	99	57	38,15	cyclictest	2310106	-21	ssh	23:00:01	1
2183471	99	56	48,6	cyclictest	2381739	-21	kworker/u4:9+events_unbound	00:35:01	1
2183471	99	56	48,6	cyclictest	2291257	-21	systemd	22:37:46	1
2183471	99	56	48,6	cyclictest	2291257	-21	systemd	22:37:45	1
2183470	99	56	48,6	cyclictest	2395410	-21	sshd	00:38:08	0
2183470	99	56	48,5	cyclictest	2371498	-21	load	00:10:28	0
2183470	99	56	46,7	cyclictest	2314680	-21	aten2__	23:05:15	0
2183471	99	55	45,7	cyclictest	2184435	-21	switchtime	19:10:37	1
2183470	99	55	47,6	cyclictest	2188550	-21	kworker/u4:15+events_unbound	20:22:20	0
2183471	99	54	47,5	cyclictest	2265301	-21	sshd	22:07:39	1
2183471	99	54	45,7	cyclictest	2187122	-21	timerwakeupswit	19:20:39	1
2183470	99	53	46,5	cyclictest	2196287	-21	kworker/u4:9+events_unbound	20:30:01	0
2183470	99	53	43,8	cyclictest	2376818	-21	sh	00:16:10	0
2183470	99	53	43,7	cyclictest	2269257	-21	kworker/u4:0+events_unbound	22:12:43	0
2183470	99	53	43,5	cyclictest	0	-21	swapper/0	21:40:16	0
2183471	99	52	45,5	cyclictest	2360296	-21	kworker/u4:14+events_unbound	00:18:05	1
2183471	99	52	44,6	cyclictest	2236987	-21	df_abs	21:35:16	1
2183471	99	52	42,7	cyclictest	37	-21	kcompactd0	22:14:58	1
2183471	99	52	42,7	cyclictest	0	-21	swapper/1	20:10:37	1
2183470	99	52	45,5	cyclictest	2201578	-21	kworker/u4:13+events_unbound	21:52:00	0
2183470	99	52	43,7	cyclictest	2390514	-21	kworker/u4:7+events_unbound	00:33:09	0
2183471	99	51	43,6	cyclictest	2184700	-21	kworker/u4:4+events_unbound	19:17:05	1
2183471	99	51	40,8	cyclictest	53	-21	kswapd0	22:20:01	1
2183470	99	51	44,5	cyclictest	2239299	-21	sh	21:37:35	0
2183470	99	51	43,6	cyclictest	2198950	-21	kworker/u4:7+events_unbound	20:12:16	0
2183470	99	51	41,7	cyclictest	2208328	-21	aten_r7power_vo	20:45:16	0
2183471	99	50	43,5	cyclictest	2331717	-21	ssh	23:25:06	1
2183471	99	50	43,5	cyclictest	2311563	-21	unixbench_multi	23:00:42	1
2183471	99	50	43,5	cyclictest	2280783	-21	ld	22:25:32	1
2183471	99	50	43,5	cyclictest	2236483	-21	latency_hist	21:35:00	1
2183471	99	50	42,5	cyclictest	53	-21	kswapd0	22:50:01	1
2183471	99	50	39,8	cyclictest	2340862	-21	ssh	23:35:20	1
2183470	99	50	43,5	cyclictest	2367102	-21	uname	00:05:23	0
2183470	99	50	43,5	cyclictest	2337336	-21	ls	23:30:40	0
2183470	99	50	43,5	cyclictest	2337336	-21	ls	23:30:39	0
2183470	99	50	43,5	cyclictest	2281006	-21	run-parts	22:25:38	0
2183470	99	50	42,7	cyclictest	378	-21	dbus-daemon	23:37:55	0
2183470	99	50	41,6	cyclictest	2260515	-21	kworker/u4:3+events_unbound	22:09:59	0
2183470	99	50	38,10	cyclictest	53	-21	kswapd0	23:25:06	0
2183471	99	49	40,7	cyclictest	2206697	-21	systemd	20:37:21	1
2183471	99	49	38,8	cyclictest	2202514	-21	ps	20:20:34	1
2183471	99	49	34,11	cyclictest	0	-21	swapper/1	21:40:40	1
2183470	99	49	42,4	cyclictest	2201578	-21	kworker/u4:13+events_unbound	21:20:00	0
2183470	99	49	41,6	cyclictest	2232877	-21	/usr/sbin/munin	21:30:21	0
2183471	99	48	40,6	cyclictest	2208052	-21	grep	20:45:01	1
2183471	99	48	40,5	cyclictest	2349082	-21	apt-get	23:45:11	1
2183471	99	48	40,5	cyclictest	0	-21	swapper/1	21:10:19	1
2183471	99	48	38,8	cyclictest	2286791	-21	kworker/u4:4-rpciod	23:05:30	1
2183471	99	48	38,7	cyclictest	0	-21	swapper/1	21:45:29	1
2183471	99	48	35,10	cyclictest	0	-21	swapper/1	22:50:33	1
2183470	99	48	41,5	cyclictest	2294313	-21	head	22:40:41	0
2183470	99	48	41,5	cyclictest	2230432	-21	systemd	21:27:31	0
2183470	99	48	41,5	cyclictest	2230432	-21	systemd	21:27:30	0
2183471	99	47	40,5	cyclictest	2384379	-21	gltestperf	00:25:23	1
2183471	99	47	40,5	cyclictest	2332354	-21	fschecks_time	23:25:23	1
2183471	99	47	40,5	cyclictest	2323807	-21	/usr/sbin/munin	23:15:21	1
2183471	99	47	39,5	cyclictest	2279808	-21	diskmemload	22:25:01	1
2183470	99	47	39,6	cyclictest	2307197	-21	/usr/sbin/munin	22:55:41	0
2183470	99	47	39,4	cyclictest	0	-21	swapper/0	23:15:23	0
2183470	99	47	38,7	cyclictest	2245664	-21	aten_r7power_vo	21:45:17	0
2183470	99	47	38,7	cyclictest	2188580	-21	cron	19:30:00	0
2183470	99	47	38,6	cyclictest	2275424	-21	ssh	22:20:00	0
2183470	99	47	37,8	cyclictest	2200635	-21	aten_r7power_vo	20:15:20	0
2183470	99	47	31,14	cyclictest	0	-21	swapper/0	20:50:37	0
2183471	99	46	39,5	cyclictest	2393872	-21	who	00:35:42	1
2183471	99	46	39,5	cyclictest	2259420	-21	sendmail_mailqu	22:00:39	1
2183471	99	46	39,5	cyclictest	2191091	-21	kworker/u4:16+events_unbound	19:57:13	1
2183471	99	46	37,7	cyclictest	2221223	-21	kworker/u4:1+events_unbound	21:17:29	1
2183471	99	46	37,7	cyclictest	2210759	-21	aten2__	20:55:15	1
2183471	99	46	37,6	cyclictest	0	-21	swapper/1	21:55:31	1
2183471	99	46	34,9	cyclictest	0	-21	swapper/1	21:25:33	1
2183471	99	46	34,9	cyclictest	0	-21	swapper/1	21:25:32	1
2183470	99	46	39,5	cyclictest	2333934	-21	kworker/u4:8+events_unbound	23:27:55	0
2183470	99	46	39,5	cyclictest	2226037	-21	sshd	21:22:30	0
2183470	99	46	37,6	cyclictest	2316990	-21	kworker/u4:8-rpciod	23:15:00	0
2183471	99	45	38,5	cyclictest	2367632	-21	timerandwakeup	00:05:41	1
2183471	99	45	36,7	cyclictest	2210532	-21	systemd	20:52:22	1
2183471	99	45	36,6	cyclictest	0	-21	swapper/1	23:40:27	1
2183471	99	45	35,8	cyclictest	2363419	-21	timerwakeupswit	00:00:48	1
2183470	99	45	39,4	cyclictest	2284552	-21	df_abs	22:30:15	0
2183470	99	45	39,4	cyclictest	2284552	-21	df_abs	22:30:15	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