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 highest latencies:

System rack7slot2.osadl.org (updated Thu Aug 20, 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
3311075	99	111	104,5	cyclictest	3337950	-21	kworker/u4:12+events_unbound	21:20:42	1
3311075	99	103	96,5	cyclictest	3362851	-21	kworker/u4:9+events_unbound	22:00:49	1
3311074	99	103	94,7	cyclictest	3460680	-21	kworker/u4:7+events_unbound	00:03:28	0
3311075	99	101	82,6	cyclictest	3330207	-21	kworker/u4:8+events_unbound	20:35:33	1
3311075	99	99	90,6	cyclictest	3316154	-21	kworker/u4:12+events_unbound	20:30:33	1
3311075	99	95	86,7	cyclictest	3312301	-21	kworker/u4:6+events_unbound	19:30:23	1
3311075	99	91	83,6	cyclictest	3312300	-21	kworker/u4:5+events_unbound	19:50:29	1
3311075	99	90	81,7	cyclictest	3317427	-21	kworker/u4:15+events_unbound	19:35:25	1
3311075	99	90	74,7	cyclictest	3336671	-21	kworker/u4:1+events_unbound	20:50:36	1
3311075	99	89	82,5	cyclictest	3526834	-21	kworker/u4:9+events_unbound	00:39:00	1
3311075	99	89	82,5	cyclictest	3312300	-21	kworker/u4:5+events_unbound	19:55:29	1
3311075	99	86	69,5	cyclictest	3316154	-21	kworker/u4:12+events_unbound	20:20:32	1
3311075	99	84	76,6	cyclictest	3332747	-21	kworker/u4:5+events_unbound	20:40:36	1
3311075	99	83	67,5	cyclictest	3358258	-21	kworker/u4:7+events_unbound	21:50:48	1
3311074	99	80	67,10	cyclictest	53	-21	kswapd0	22:05:08	0
3311075	99	79	69,8	cyclictest	3312302	-21	kworker/u4:7+events_unbound	19:15:20	1
3311075	99	77	70,5	cyclictest	3317422	-21	kworker/u4:14+events_unbound	20:00:27	1
3311074	99	77	3,63	cyclictest	3342981	-21	ssh	21:10:28	0
3311075	99	76	69,5	cyclictest	3456154	-21	kworker/u4:2+events_unbound	23:31:07	1
3311075	99	72	68,2	cyclictest	3317422	-21	kworker/u4:14+events_unbound	20:05:29	1
3311075	99	72	55,5	cyclictest	3349080	-21	kworker/u4:8+events_unbound	21:25:43	1
3311075	99	69	63,4	cyclictest	3385108	-21	kworker/u4:3+events_unbound	22:05:49	1
3311074	99	67	36,25	cyclictest	256	50	irq/23-42890000.ethernet	22:50:12	0
3311075	99	65	59,5	cyclictest	3407857	-21	kworker/u4:15+events_unbound	23:11:02	1
3311075	99	65	58,5	cyclictest	3469625	-21	kworker/u4:1+events_unbound	00:18:54	1
3311075	99	65	58,5	cyclictest	3438797	-21	kworker/u4:10+events_unbound	23:00:59	1
3311074	99	64	54,5	cyclictest	0	-21	swapper/0	19:25:01	0
3311074	99	63	45,15	cyclictest	3397215	-21	ntp_states	22:10:33	0
3311074	99	62	53,7	cyclictest	53	-21	kswapd0	23:50:01	0
3311074	99	62	46,10	cyclictest	256	50	irq/23-42890000.ethernet	00:10:08	0
3311074	99	61	40,13	cyclictest	3320007	-21	kworker/u4:15	19:44:59	0
3311075	99	60	53,5	cyclictest	3458177	-21	apt-get	23:20:10	1
3311074	99	60	50,8	cyclictest	3526831	-21	kworker/u4:3+events_unbound	00:40:01	0
3311075	99	59	49,8	cyclictest	3362849	-21	kworker/u4:3+events_unbound	21:45:01	1
3311074	99	59	50,7	cyclictest	3409886	-21	/usr/sbin/munin	22:25:15	0
3311075	99	58	47,8	cyclictest	3432104	-21	aten_r7power_vo	22:50:21	1
3311075	99	58	43,6	cyclictest	3372008	-21	kworker/u4:13+events_unbound	22:40:55	1
3311075	99	57	47,8	cyclictest	3511833	-21	cpu	00:20:17	1
3311074	99	57	50,5	cyclictest	3312300	-21	kworker/u4:5+events_unbound	19:50:02	0
3311075	99	56	49,5	cyclictest	3314882	-21	kworker/u4:2+events_unbound	19:49:59	1
3311075	99	56	48,6	cyclictest	3489418	-21	/usr/sbin/munin	23:55:12	1
3311074	99	56	45,8	cyclictest	3400893	-21	basename	22:15:16	0
3311074	99	56	34,18	cyclictest	0	-21	swapper/0	20:45:13	0
3311074	99	56	10,37	cyclictest	0	-21	swapper/0	22:45:11	0
3311075	99	55	48,5	cyclictest	3397287	-21	/usr/sbin/munin	22:10:38	1
3311074	99	55	6,17	cyclictest	0	-21	swapper/0	23:25:13	0
3311074	99	55	48,5	cyclictest	3471966	-21	grep	23:35:17	0
3311074	99	55	46,7	cyclictest	3458669	-21	/usr/sbin/munin	23:20:22	0
3311074	99	55	46,6	cyclictest	3347650	-21	/usr/sbin/munin	21:15:36	0
3311074	99	55	44,8	cyclictest	378	-21	dbus-daemon	19:30:23	0
3311074	99	55	39,10	cyclictest	3373479	-21	ssh	21:44:56	0
3311075	99	54	48,4	cyclictest	3348020	-21	unixbench_singl	21:15:39	1
3311075	99	54	46,5	cyclictest	3498022	-21	kworker/u4:7	00:05:01	1
3311075	99	54	43,8	cyclictest	0	-21	swapper/1	22:35:41	1
3311075	99	54	14,19	cyclictest	0	-21	swapper/1	23:50:35	1
3311075	99	53	46,5	cyclictest	3460680	-21	kworker/u4:7+events_unbound	23:26:06	1
3311074	99	53	46,5	cyclictest	3521214	-21	ntp_kernel_err	00:30:32	0
3311074	99	53	44,6	cyclictest	3356914	-21	diskmemload	21:25:39	0
3311074	99	53	36,10	cyclictest	256	50	irq/23-42890000.ethernet	00:17:49	0
3311074	99	53	33,6	cyclictest	3453728	-21	cron	23:14:59	0
3311075	99	52	41,8	cyclictest	3437118	-21	ntpq	22:55:30	1
3311074	99	52	46,4	cyclictest	3517080	-21	mailstats	00:25:38	0
3311074	99	52	44,6	cyclictest	3445509	-21	/usr/sbin/munin	23:05:20	0
3311074	99	52	35,15	cyclictest	3423051	-21	wget	22:40:14	0
3311074	99	52	33,17	cyclictest	0	-21	swapper/0	23:40:33	0
3311075	99	51	42,7	cyclictest	3473347	-21	systemd	23:36:06	1
3311075	99	51	41,7	cyclictest	0	-21	swapper/1	20:10:37	1
3311075	99	51	40,5	cyclictest	3337949	-21	kworker/u4:10+events_unbound	21:05:39	1
3311075	99	51	37,5	cyclictest	3518503	-21	kworker/u4:0+events_unbound	00:35:00	1
3311074	99	51	44,6	cyclictest	3302629	-21	kworker/u4:10+events_unbound	19:35:03	0
3311074	99	51	44,5	cyclictest	3468163	-21	ntp_states	23:30:33	0
3311074	99	51	42,7	cyclictest	3437274	-21	/usr/sbin/munin	22:55:37	0
3311074	99	50	43,5	cyclictest	3358258	-21	kworker/u4:7+events_unbound	21:49:45	0
3311074	99	50	42,6	cyclictest	3312302	-21	kworker/u4:7+events_unbound	19:15:03	0
3311074	99	50	40,8	cyclictest	378	-21	dbus-daemon	20:25:31	0
3311075	99	49	42,5	cyclictest	3409882	-21	aten_r7power_vo	22:25:15	1
3311075	99	49	42,5	cyclictest	3314635	-21	switchtime	19:20:37	1
3311075	99	49	35,12	cyclictest	0	-21	swapper/1	21:35:25	1
3311075	99	49	25,15	cyclictest	27	1	ktimers/1	22:30:27	1
3311074	99	49	44,4	cyclictest	3372008	-21	kworker/u4:13+events_unbound	21:55:03	0
3311074	99	49	43,5	cyclictest	3312301	-21	kworker/u4:6+events_unbound	20:18:49	0
3311074	99	49	35,9	cyclictest	3500236	-21	ssh	00:06:34	0
3311074	99	49	3,10	cyclictest	3406037	-21	ssh	22:20:29	0
3311074	99	49	25,7	cyclictest	0	-21	swapper/0	20:30:16	0
3311075	99	48	42,4	cyclictest	3446393	-21	timerwakeupswit	23:05:41	1
3311075	99	48	41,5	cyclictest	3458249	-21	sh	23:20:02	1
3311075	99	48	38,7	cyclictest	3416233	-21	kworker/u4:1+events_unbound	22:50:00	1
3311075	99	48	38,7	cyclictest	0	-21	swapper/1	23:41:08	1
3311074	99	48	40,6	cyclictest	3302629	-21	kworker/u4:10+events_unbound	19:58:02	0
3311074	99	48	39,6	cyclictest	0	-21	swapper/0	20:05:28	0
3311074	99	48	26,19	cyclictest	3321269	-21	cron	19:50:00	0
3311075	99	47	41,4	cyclictest	3342263	-21	aten2__	21:10:16	1
3311075	99	47	40,5	cyclictest	3339302	-21	kworker/u4:13+events_unbound	21:05:00	1
3311075	99	47	40,5	cyclictest	3335625	-21	aten2__	20:45:24	1
3311075	99	47	30,13	cyclictest	3374833	-21	awk	21:45:35	1
3311074	99	47	40,5	cyclictest	3512125	-21	sed	00:20:21	0
3311074	99	47	39,6	cyclictest	3361321	-21	sendmail_mailqu	21:30:39	0
3311074	99	47	39,5	cyclictest	0	-21	swapper/0	21:52:31	0
3311074	99	47	37,7	cyclictest	3337968	-21	modprobe	20:55:00	0
3311074	99	47	36,8	cyclictest	0	-21	swapper/0	21:35:38	0
3311074	99	47	36,7	cyclictest	0	-21	swapper/0	22:30:25	0
3311074	99	47	29,16	cyclictest	3422678	-21	cron	22:40:00	0
3311074	99	47	27,17	cyclictest	0	-21	swapper/0	23:50:12	0
3311074	99	47	25,19	cyclictest	0	-21	swapper/0	23:00:15	0
3311075	99	46	39,5	cyclictest	3498492	-21	aten_r7power_vo	00:05:17	1
3311075	99	46	39,5	cyclictest	3339079	-21	threads	20:55:40	1
3311075	99	46	37,6	cyclictest	3316162	-21	cron	19:30:00	1
3311074	99	46	40,4	cyclictest	3387970	-21	/usr/sbin/munin	22:00:22	0
3311074	99	46	39,5	cyclictest	3312300	-21	kworker/u4:5+events_unbound	20:11:10	0
3311075	99	45	37,6	cyclictest	3513353	-21	kworker/u4:5+events_unbound	00:28:59	1
3311075	99	45	35,7	cyclictest	0	-21	swapper/1	21:30:20	1
3311075	99	45	33,8	cyclictest	37	-21	kcompactd0	21:59:11	1
3311074	99	45	39,4	cyclictest	3489791	-21	fschecks_count	23:55:20	0
3311074	99	45	37,6	cyclictest	3337949	-21	kworker/u4:10+events_unbound	21:00:51	0
3311074	99	45	37,5	cyclictest	0	-21	swapper/0	21:20:42	0
3311074	99	45	36,6	cyclictest	0	-21	swapper/0	19:25:20	0
3311075	99	44	37,5	cyclictest	3330755	-21	gltestperf	20:25:21	1
3311075	99	44	36,6	cyclictest	3405030	-21	latency_hist	22:20:01	1
3311074	99	44	37,5	cyclictest	3311631	-21	head	19:10:23	0
3311074	99	44	36,6	cyclictest	3334172	-21	latency_hist	20:40:01	0
3311074	99	44	14,23	cyclictest	17	1	rcu_preempt	23:15:17	0
3311075	99	43	35,5	cyclictest	3317421	-21	kworker/u4:13-rpciod	19:40:36	1
3311074	99	43	37,5	cyclictest	3332747	-21	kworker/u4:5+events_unbound	20:41:12	0
3311074	99	43	34,7	cyclictest	3341138	-21	fschecks_time	21:05:19	0
3311075	99	42	33,7	cyclictest	3329039	-21	latency_hist	20:20:01	1
3311075	99	42	30,9	cyclictest	0	-21	swapper/1	00:10:41	1
3311075	99	42	13,15	cyclictest	0	-21	swapper/1	22:20:11	1
3311074	99	42	35,5	cyclictest	3302629	-21	kworker/u4:10+events_unbound	20:01:45	0
3311074	99	42	34,5	cyclictest	3311072	-21	cyclictest	20:20:16	0
3311074	99	42	3,32	cyclictest	0	-21	swapper/0	20:55:09	0
3311075	99	41	31,7	cyclictest	0	-21	swapper/1	23:45:20	1
3311075	99	41	2,34	cyclictest	3311821	-21	ntpq	19:10:32	1
3311074	99	35	26,7	cyclictest	0	-21	swapper/0	19:10:00	0
3311075	99	26	19,5	cyclictest	3308573	-21	kworker/u4:0-rpciod	19:10:01	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