OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 792 highest latencies:

System rack7slot2.osadl.org (updated Tue Jul 07, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3430311	99	125	61,45	cyclictest	53	-21	kswapd0	10:40:12	0
3430311	99	123	93,21	cyclictest	53	-21	kswapd0	10:35:12	0
3430313	99	111	103,6	cyclictest	3477173	-21	kworker/u4:4+events_unbound	09:34:45	1
3430313	99	103	96,5	cyclictest	3499872	-21	kworker/u4:0+events_unbound	10:19:53	1
3430313	99	96	87,6	cyclictest	3438007	-21	kworker/u4:8+events_unbound	09:14:41	1
3430313	99	93	86,5	cyclictest	3618141	-21	kworker/u4:8+events_unbound	12:15:15	1
3430313	99	92	76,7	cyclictest	3447043	-21	kworker/u4:15+events_unbound	09:19:43	1
3430313	99	85	77,6	cyclictest	3530204	-21	kworker/u4:11+events_unbound	11:15:01	1
3430313	99	84	61,6	cyclictest	3556805	-21	kworker/u4:1+events_unbound	10:59:58	1
3430313	99	83	76,5	cyclictest	3503747	-21	kworker/u4:4+events_unbound	09:59:50	1
3430313	99	81	72,7	cyclictest	3579158	-21	kworker/u4:16+events_unbound	11:30:05	1
3430313	99	81	61,5	cyclictest	3561295	-21	kworker/u4:8+events_unbound	11:05:02	1
3430311	99	79	1,35	cyclictest	3625049	-21	ssh	12:15:13	0
3430313	99	76	68,6	cyclictest	3552503	-21	kworker/u4:7+events_unbound	10:54:58	1
3430311	99	75	64,8	cyclictest	3609778	-21	kworker/u4:11+events_unbound	12:25:17	0
3430313	99	73	67,4	cyclictest	3591871	-21	kworker/u4:1+events_unbound	11:40:09	1
3430313	99	73	64,6	cyclictest	3447042	-21	kworker/u4:10+events_unbound	09:09:40	1
3430313	99	70	63,5	cyclictest	3517387	-21	kworker/u4:3+events_unbound	10:24:52	1
3430311	99	70	40,20	cyclictest	53	-21	kswapd0	11:45:10	0
3430313	99	68	54,4	cyclictest	3570212	-21	kworker/u4:9+events_unbound	11:25:07	1
3430311	99	67	58,7	cyclictest	3486236	-21	kworker/u4:1+events_unbound	09:39:47	0
3430313	99	65	57,6	cyclictest	3454811	-21	kworker/u4:12+events_unbound	08:54:38	1
3430313	99	65	57,6	cyclictest	3443204	-21	kworker/u4:14+events_unbound	08:04:29	1
3430313	99	65	57,6	cyclictest	3443204	-21	kworker/u4:14+events_unbound	08:04:29	1
3430311	99	65	3,51	cyclictest	3524850	-21	ssh	10:20:33	0
3430313	99	64	57,5	cyclictest	3039017	-21	kworker/u4:0+events_unbound	08:29:35	1
3430311	99	64	59,3	cyclictest	3508323	-21	kworker/u4:10+events_unbound	10:10:02	0
3430313	99	63	56,5	cyclictest	3561297	-21	kworker/u4:10+events_unbound	11:04:59	1
3430313	99	61	54,5	cyclictest	3432806	-21	kworker/u4:17+events_unbound	07:24:19	1
3430313	99	61	49,7	cyclictest	0	-21	swapper/1	10:30:37	1
3430313	99	61	49,7	cyclictest	0	-21	swapper/1	10:30:36	1
3430311	99	61	35,23	cyclictest	53	-21	kswapd0	11:10:11	0
3430313	99	60	53,5	cyclictest	3426507	-21	kworker/u4:1+events_unbound	07:20:01	1
3430313	99	60	48,9	cyclictest	3426508	-21	kworker/u4:2+events_unbound	08:10:00	1
3430313	99	59	42,10	cyclictest	3593812	-21	modprobe	11:40:00	1
3430311	99	59	50,7	cyclictest	3565745	-21	kworker/u4:4+events_unbound	11:50:11	0
3430313	99	58	49,7	cyclictest	3463535	-21	kworker/u4:20+events_unbound	09:24:42	1
3430311	99	58	50,6	cyclictest	3561295	-21	kworker/u4:8+events_unbound	11:20:05	0
3430313	99	57	50,5	cyclictest	3565745	-21	kworker/u4:4+events_unbound	11:50:00	1
3430311	99	57	50,5	cyclictest	3629406	-21	/usr/sbin/munin	12:20:13	0
3430311	99	57	47,6	cyclictest	3511377	-21	/usr/sbin/munin	10:05:24	0
3430313	99	56	49,5	cyclictest	3487886	-21	ssh	09:39:44	1
3430313	99	56	48,5	cyclictest	0	-21	swapper/1	12:30:18	1
3430313	99	56	47,7	cyclictest	3609776	-21	kworker/u4:9+events_unbound	12:20:03	1
3430313	99	56	47,6	cyclictest	3438011	-21	kworker/u4:9+events_unbound	08:49:38	1
3430311	99	56	48,5	cyclictest	3461274	-21	latency_hist	09:10:01	0
3430311	99	56	35,14	cyclictest	3430310	-21	cyclictest	12:30:13	0
3430313	99	55	44,7	cyclictest	3618141	-21	kworker/u4:8+events_unbound	12:10:01	1
3430313	99	55	43,9	cyclictest	3499872	-21	kworker/u4:0+events_unbound	10:25:34	1
3430313	99	55	43,8	cyclictest	3488441	-21	basename	09:40:16	1
3430313	99	55	43,8	cyclictest	3488441	-21	basename	09:40:16	1
3430311	99	55	49,4	cyclictest	3426508	-21	kworker/u4:2+events_unbound	08:59:40	0
3430311	99	55	35,18	cyclictest	3472608	-21	kworker/u4:1	09:21:50	0
3430311	99	55	33,20	cyclictest	3585452	-21	aten_r7power_en	11:30:17	0
3430311	99	54	46,6	cyclictest	3426508	-21	kworker/u4:2+events_unbound	08:24:32	0
3430311	99	54	33,17	cyclictest	3453533	-21	cron	08:40:00	0
3430313	99	53	43,6	cyclictest	3609778	-21	kworker/u4:11+events_unbound	12:00:01	1
3430313	99	53	37,11	cyclictest	37	-21	kcompactd0	10:14:02	1
3430311	99	53	42,9	cyclictest	0	-21	swapper/0	11:55:33	0
3430313	99	52	45,5	cyclictest	3511737	-21	sendmail_mailqu	10:05:37	1
3430311	99	52	44,5	cyclictest	3595419	-21	unixbench_multi	11:40:39	0
3430311	99	52	41,8	cyclictest	3502719	-21	ps	09:55:37	0
3430311	99	52	32,6	cyclictest	3479157	-21	latency_hist	09:30:01	0
3430311	99	52	32,17	cyclictest	3593801	-21	cron	11:40:00	0
3430313	99	51	46,4	cyclictest	3436741	-21	kworker/u4:6+events_unbound	07:50:45	1
3430313	99	51	43,5	cyclictest	3426508	-21	kworker/u4:2+events_unbound	08:25:00	1
3430313	99	51	38,10	cyclictest	3633774	-21	apt	12:25:14	1
3430311	99	51	42,6	cyclictest	3506652	-21	fschecks_time	10:00:20	0
3430311	99	51	42,6	cyclictest	3493820	-21	proc_pri	09:45:37	0
3430311	99	51	38,10	cyclictest	3642573	-21	aten_r7power_cu	12:35:16	0
3430313	99	50	37,6	cyclictest	3431536	-21	kworker/u4:15+events_unbound	07:29:19	1
3430313	99	50	37,6	cyclictest	3431536	-21	kworker/u4:15+events_unbound	07:29:18	1
3430311	99	50	45,3	cyclictest	0	-21	swapper/0	09:15:01	0
3430311	99	50	38,8	cyclictest	3451651	-21	sshd	08:30:26	0
3430311	99	50	37,10	cyclictest	53	-21	kswapd0	10:55:44	0
3430311	99	50	24,22	cyclictest	0	-21	swapper/0	07:20:11	0
3430313	99	49	41,5	cyclictest	3643489	-21	awk	12:35:37	1
3430311	99	49	42,4	cyclictest	3612136	-21	basename	12:00:21	0
3430311	99	49	41,6	cyclictest	3559613	-21	kernelversion	11:00:22	0
3430313	99	48	40,5	cyclictest	0	-21	swapper/1	12:10:14	1
3430313	99	48	32,13	cyclictest	3536921	-21	apt-get	10:35:12	1
3430313	99	48	31,9	cyclictest	3587409	-21	kworker/u4:9+events_unbound	11:50:25	1
3430311	99	48	40,6	cyclictest	3563419	-21	dpkg	11:05:12	0
3430311	99	48	29,17	cyclictest	3520919	-21	/usr/sbin/munin	10:15:44	0
3430313	99	47	40,5	cyclictest	3437225	-21	fschecks_count	07:35:19	1
3430313	99	47	39,5	cyclictest	3451116	-21	aten2__	08:30:17	1
3430313	99	47	32,12	cyclictest	3497003	-21	cron	09:49:59	1
3430311	99	47	42,3	cyclictest	3438013	-21	kworker/u4:12+events_unbound	07:39:24	0
3430311	99	47	39,5	cyclictest	3529059	-21	/usr/sbin/munin	10:25:23	0
3430311	99	47	37,7	cyclictest	3466091	-21	aten_r7power_cu	09:15:15	0
3430311	99	47	32,11	cyclictest	0	-21	swapper/0	09:30:23	0
3430313	99	46	38,4	cyclictest	3506699	-21	fschecks_time	10:00:22	1
3430313	99	46	36,7	cyclictest	0	-21	swapper/1	08:10:32	1
3430313	99	46	29,11	cyclictest	3459941	-21	modprobe	09:05:01	1
3430311	99	46	41,3	cyclictest	3605294	-21	kworker/u4:6+events_unbound	12:10:14	0
3430311	99	46	40,4	cyclictest	3444158	-21	/usr/sbin/munin	08:00:37	0
3430311	99	46	40,4	cyclictest	3444158	-21	/usr/sbin/munin	08:00:36	0
3430311	99	46	38,6	cyclictest	3431534	-21	kworker/u4:11+events_unbound	07:44:25	0
3430311	99	46	27,16	cyclictest	0	-21	swapper/0	11:25:19	0
3430311	99	46	26,18	cyclictest	3444934	-21	fschecks_count	08:05:20	0
3430313	99	45	38,5	cyclictest	3577459	-21	ldconfig	11:20:35	1
3430313	99	45	37,6	cyclictest	3568377	-21	kernelversion	11:10:23	1
3430313	99	45	36,7	cyclictest	3546944	-21	proc_pri	10:45:39	1
3430311	99	45	39,4	cyclictest	3550838	-21	cut	10:50:19	0
3430311	99	45	38,5	cyclictest	3498266	-21	processes	09:50:38	0
3430311	99	45	38,5	cyclictest	3426508	-21	kworker/u4:2+events_unbound	07:35:01	0
3430311	99	45	3,16	cyclictest	3440611	-21	apt-get	07:50:11	0
3430313	99	44	37,5	cyclictest	3430237	-21	kworker/u4:4+events_unbound	07:14:16	1
3430313	99	44	35,6	cyclictest	3445769	-21	kworker/u4:3-nfsiod	08:15:28	1
3430313	99	44	35,6	cyclictest	0	-21	swapper/1	09:25:24	1
3430313	99	44	34,6	cyclictest	3486239	-21	kworker/u4:7-rpciod	09:50:15	1
3430311	99	44	37,5	cyclictest	3536958	-21	sort	10:35:01	0
3430311	99	44	37,5	cyclictest	3536958	-21	sort	10:35:00	0
3430311	99	44	24,17	cyclictest	0	-21	swapper/0	12:05:27	0
3430313	99	43	37,4	cyclictest	3440249	-21	sendmail_mailqu	07:45:38	1
3430313	99	43	36,5	cyclictest	3609776	-21	kworker/u4:9+events_unbound	12:00:02	1
3430313	99	43	36,5	cyclictest	3541896	-21	df_abs	10:40:21	1
3430311	99	43	36,5	cyclictest	1069	-21	lldpd	07:14:28	0
3430311	99	43	34,7	cyclictest	3488557	-21	aten_r7power_vo	09:40:17	0
3430311	99	43	34,7	cyclictest	3488557	-21	aten_r7power_vo	09:40:16	0
3430311	99	43	26,15	cyclictest	0	-21	swapper/0	07:55:38	0
3430313	99	42	33,6	cyclictest	3439465	-21	latency_hist	07:45:01	1
3430313	99	42	31,7	cyclictest	0	-21	swapper/1	08:40:30	1
3430311	99	42	36,4	cyclictest	0	-21	swapper/0	07:15:18	0
3430311	99	42	34,5	cyclictest	3453839	-21	aten_r7power_po	08:40:17	0
3430311	99	42	33,7	cyclictest	3449917	-21	aten_r7power_po	08:25:17	0
3430311	99	42	33,6	cyclictest	0	-21	swapper/0	10:45:30	0
3430311	99	42	23,16	cyclictest	0	-21	swapper/0	08:15:01	0
3430313	99	41	30,8	cyclictest	0	-21	swapper/1	07:55:38	1
3430311	99	41	34,5	cyclictest	3565744	-21	kworker/u4:2-xprtiod	11:15:22	0
3430311	99	41	34,5	cyclictest	3440621	-21	apt-get	07:50:00	0
3430311	99	41	33,6	cyclictest	3455055	-21	aten_r7power_cu	08:45:16	0
3430311	99	41	33,5	cyclictest	0	-21	swapper/0	07:10:00	0
3430311	99	41	32,6	cyclictest	3447322	-21	grep	08:15:14	0
3430313	99	39	29,7	cyclictest	3447042	-21	kworker/u4:10-rpciod	08:55:36	1
3430313	99	39	28,8	cyclictest	0	-21	swapper/1	07:30:41	1
3430311	99	39	31,6	cyclictest	3459760	-21	timerwakeupswit	09:00:38	0
3430311	99	38	31,5	cyclictest	3456572	-21	fschecks_time	08:50:20	0
3430313	99	36	27,5	cyclictest	3448322	-21	kworker/u4:17-rpciod	08:35:43	1
3430313	99	36	26,7	cyclictest	0	-21	swapper/1	07:10:02	1
3430311	99	35	28,4	cyclictest	3434886	-21	kernelversion	07:25:22	0
3430311	99	35	28,4	cyclictest	3434886	-21	kernelversion	07:25:22	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17