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 Sat Mar 14, 2026 00:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
86922	99	94	86,6	cyclictest	182100	-21	kworker/u4:4+events_unbound	22:35:33	1
86920	99	92	80,5	cyclictest	53	-21	kswapd0	23:05:09	0
86922	99	86	79,5	cyclictest	185925	-21	kworker/u4:10+events_unbound	22:26:54	1
86922	99	86	75,9	cyclictest	53	-21	kswapd0	00:05:01	1
86922	99	86	47,4	cyclictest	0	-21	swapper/1	21:40:11	1
86920	99	85	77,6	cyclictest	53	-21	kswapd0	23:20:01	0
86920	99	85	69,14	cyclictest	230356	-21	kworker/u4:9+events_unbound	23:27:11	0
86922	99	81	58,7	cyclictest	221486	-21	kworker/u4:5+events_unbound	23:40:00	1
86920	99	81	73,6	cyclictest	173141	-21	kworker/u4:5+events_unbound	22:16:52	0
86920	99	80	72,5	cyclictest	230356	-21	kworker/u4:9+events_unbound	23:37:12	0
86920	99	79	68,8	cyclictest	221486	-21	kworker/u4:5+events_unbound	23:40:33	0
86920	99	78	70,6	cyclictest	260663	-21	kworker/u4:1+events_unbound	00:08:16	0
86920	99	78	70,6	cyclictest	217053	-21	kworker/u4:2+events_unbound	23:32:10	0
86920	99	78	70,6	cyclictest	142482	-21	kworker/u4:6+events_unbound	21:51:46	0
86920	99	74	67,5	cyclictest	182101	-21	kworker/u4:7+events_unbound	23:02:06	0
86920	99	74	65,7	cyclictest	90729	-21	kworker/u4:11+events_unbound	19:36:18	0
86920	99	74	64,7	cyclictest	204449	-21	kworker/u4:14+events_unbound	22:55:34	0
86920	99	73	67,4	cyclictest	103480	-21	kworker/u4:15+events_unbound	21:36:42	0
86920	99	73	66,5	cyclictest	269528	-21	kworker/u4:9+events_unbound	00:15:00	0
86922	99	72	64,6	cyclictest	116353	-21	kworker/u4:9+events_unbound	21:21:42	1
86920	99	72	64,5	cyclictest	182100	-21	kworker/u4:4+events_unbound	22:41:57	0
86920	99	70	62,6	cyclictest	53	-21	kswapd0	22:00:34	0
86922	99	68	58,7	cyclictest	0	-21	swapper/1	22:30:28	1
86920	99	68	60,6	cyclictest	265074	-21	kworker/u4:6+events_unbound	23:57:31	0
86920	99	68	51,5	cyclictest	142483	-21	kworker/u4:7+events_unbound	21:56:47	0
86922	99	67	57,7	cyclictest	53	-21	kswapd0	23:05:00	1
86920	99	66	55,8	cyclictest	283521	-21	systemd	00:18:48	0
86920	99	65	58,5	cyclictest	88144	-21	kworker/u4:0+events_unbound	20:20:01	0
86920	99	63	55,6	cyclictest	260663	-21	kworker/u4:1+events_unbound	00:03:07	0
86922	99	62	41,7	cyclictest	142482	-21	kworker/u4:6+events_unbound	21:50:01	1
86920	99	62	55,4	cyclictest	133478	-21	kworker/u4:5+events_unbound	21:30:00	0
86920	99	62	48,8	cyclictest	256	50	irq/23-42890000.ethernet	19:10:00	0
86920	99	61	55,4	cyclictest	53	-21	kswapd0	22:35:32	0
86920	99	61	53,6	cyclictest	269527	-21	kworker/u4:8+events_unbound	00:33:58	0
86920	99	61	51,7	cyclictest	53	-21	kswapd0	23:20:10	0
86920	99	60	52,6	cyclictest	259768	-21	/usr/sbin/munin	23:50:40	0
86920	99	60	51,7	cyclictest	378	-21	dbus-daemon	21:11:38	0
86920	99	57	49,5	cyclictest	120446	-21	kworker/u4:0+xprtiod	21:30:12	0
86920	99	57	47,7	cyclictest	90727	-21	kworker/u4:9+events_unbound	20:00:02	0
86920	99	57	46,8	cyclictest	179633	-21	apt-get	22:20:13	0
86922	99	55	48,4	cyclictest	0	-21	swapper/1	22:20:15	1
86920	99	55	48,5	cyclictest	142484	-21	kworker/u4:8+events_unbound	21:48:42	0
86920	99	55	46,7	cyclictest	182101	-21	kworker/u4:7+events_unbound	22:52:02	0
86922	99	54	47,5	cyclictest	0	-21	swapper/1	23:15:25	1
86922	99	54	43,8	cyclictest	158878	-21	sh	21:55:35	1
86922	99	54	41,10	cyclictest	0	-21	swapper/1	21:35:29	1
86920	99	54	46,6	cyclictest	225922	-21	kworker/u4:8+events_unbound	23:14:59	0
86922	99	53	46,5	cyclictest	221485	-21	kworker/u4:4+events_unbound	23:30:41	1
86922	99	53	45,6	cyclictest	263536	-21	ntpq	23:55:29	1
86920	99	53	45,6	cyclictest	90727	-21	kworker/u4:9+events_unbound	19:26:18	0
86920	99	53	45,6	cyclictest	189150	-21	gltestperf	22:30:19	0
86920	99	53	40,10	cyclictest	173138	-21	ssh	22:11:45	0
86920	99	53	25,23	cyclictest	254848	-21	ntpq	23:45:27	0
86922	99	52	45,5	cyclictest	254654	-21	sshd	23:45:20	1
86922	99	52	45,5	cyclictest	176218	-21	ntp_kernel_pll_	22:15:26	1
86922	99	52	45,5	cyclictest	131990	-21	/usr/sbin/munin	21:25:21	1
86920	99	52	46,4	cyclictest	286625	-21	kworker/u4:13+events_unbound	00:30:02	0
86920	99	52	30,19	cyclictest	98406	-21	basename	19:55:00	0
86922	99	51	42,7	cyclictest	292318	-21	systemd	00:28:56	1
86922	99	51	41,7	cyclictest	88144	-21	kworker/u4:0+events_unbound	20:41:32	1
86922	99	51	38,7	cyclictest	227714	-21	kworker/u4:8	23:15:00	1
86920	99	51	43,5	cyclictest	287951	-21	sshd	00:23:55	0
86922	99	50	40,7	cyclictest	89443	-21	cron	19:20:01	1
86920	99	50	41,7	cyclictest	378	-21	dbus-daemon	19:41:20	0
86920	99	50	36,10	cyclictest	108710	-21	modprobe	20:35:00	0
86922	99	49	42,5	cyclictest	190422	-21	kworker/u4:11+events_unbound	23:05:12	1
86922	99	49	41,6	cyclictest	90727	-21	kworker/u4:9+events_unbound	20:01:23	1
86922	99	49	41,6	cyclictest	90718	-21	systemd	19:21:16	1
86922	99	49	41,5	cyclictest	53	-21	kswapd0	22:05:12	1
86922	99	49	40,7	cyclictest	232929	-21	gltestperf	23:20:25	1
86920	99	49	42,5	cyclictest	145053	-21	fschecks_count	21:40:18	0
86920	99	49	40,6	cyclictest	202015	-21	aten_r7power_cu	22:45:18	0
86920	99	49	40,6	cyclictest	109971	-21	modprobe	20:40:00	0
86922	99	48	41,5	cyclictest	293935	-21	ntp_kernel_err	00:30:22	1
86922	99	48	39,7	cyclictest	378	-21	dbus-daemon	23:42:12	1
86920	99	48	41,4	cyclictest	90729	-21	kworker/u4:11+events_unbound	19:35:01	0
86920	99	48	38,7	cyclictest	115144	-21	latency_hist	21:00:01	0
86920	99	48	35,8	cyclictest	0	-21	swapper/0	21:25:00	0
86922	99	47	41,4	cyclictest	211553	-21	mailstats	22:55:37	1
86922	99	47	39,6	cyclictest	206763	-21	tail	22:50:20	1
86922	99	47	34,6	cyclictest	191087	-21	kworker/u4:12+events_unbound	22:40:42	1
86920	99	47	40,5	cyclictest	123695	-21	unixbench_multi	21:15:39	0
86920	99	47	38,7	cyclictest	117698	-21	latency_hist	21:10:01	0
86920	99	47	37,8	cyclictest	103500	-21	cron	20:15:00	0
86920	99	47	26,19	cyclictest	88161	-21	cron	19:15:00	0
86920	99	47	25,15	cyclictest	170805	-21	modprobe	22:10:00	0
86922	99	46	42,2	cyclictest	106056	-21	kworker/u4:3+events_unbound	20:26:28	1
86922	99	46	40,4	cyclictest	102134	-21	unixbench_multi	20:05:37	1
86922	99	46	39,5	cyclictest	136520	-21	uname	21:30:26	1
86922	99	46	39,5	cyclictest	118337	-21	cut	21:10:19	1
86922	99	46	37,7	cyclictest	97091	-21	systemd	19:46:20	1
86922	99	46	37,7	cyclictest	142482	-21	kworker/u4:6+events_unbound	22:11:50	1
86922	99	46	35,9	cyclictest	0	-21	swapper/1	00:05:38	1
86920	99	46	38,6	cyclictest	1062	-21	lldpd	20:22:55	0
86922	99	45	38,5	cyclictest	258936	-21	gltestperf	23:50:20	1
86922	99	45	38,5	cyclictest	182100	-21	kworker/u4:4+events_unbound	22:46:58	1
86922	99	45	38,5	cyclictest	163059	-21	ntpq	22:00:28	1
86922	99	45	36,6	cyclictest	295469	-21	kworker/u4:0+rpciod	00:35:25	1
86922	99	45	34,7	cyclictest	0	-21	swapper/1	20:20:00	1
86922	99	45	33,9	cyclictest	0	-21	swapper/1	00:10:13	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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