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 May 12, 2026 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
833759	99	114	105,6	cyclictest	833756	-21	cyclictest	19:35:12	0
833759	99	107	99,6	cyclictest	1033387	-21	kworker/u4:1+events_unbound	00:23:28	0
833759	99	103	95,6	cyclictest	840103	-21	kworker/u4:3+events_unbound	20:47:30	0
833760	99	97	91,4	cyclictest	998662	-21	kworker/u4:6+events_unbound	23:43:24	1
833759	99	96	89,5	cyclictest	955053	-21	kworker/u4:2+events_unbound	23:33:21	0
833759	99	96	89,5	cyclictest	856798	-21	kworker/u4:17+events_unbound	20:37:29	0
833760	99	89	2,30	cyclictest	892553	-21	ssh	21:40:39	1
833759	99	87	80,5	cyclictest	840105	-21	kworker/u4:7+events_unbound	20:07:23	0
833759	99	86	70,9	cyclictest	953905	-21	sh	22:50:41	0
833759	99	85	67,15	cyclictest	53	-21	kswapd0	21:40:11	0
833759	99	84	77,5	cyclictest	840103	-21	kworker/u4:3+events_unbound	21:02:34	0
833760	99	82	76,4	cyclictest	880499	-21	kworker/u4:10+events_unbound	21:27:43	1
833760	99	82	10,27	cyclictest	1066	-21	snmpd	19:25:17	1
833759	99	78	70,6	cyclictest	933485	-21	kworker/u4:12+events_unbound	22:43:09	0
833759	99	75	68,5	cyclictest	855529	-21	kworker/u4:11+events_unbound	20:52:31	0
833760	99	74	67,5	cyclictest	842758	-21	kworker/u4:2+events_unbound	20:27:27	1
833759	99	74	45,19	cyclictest	53	-21	kswapd0	22:00:08	0
833759	99	73	45,16	cyclictest	0	-21	swapper/0	21:50:23	0
833759	99	69	57,9	cyclictest	928411	-21	kworker/u4:3+xprtiod	22:35:12	0
833759	99	69	57,9	cyclictest	928411	-21	kworker/u4:3+xprtiod	22:35:11	0
833760	99	66	58,6	cyclictest	1003076	-21	kworker/u4:3+events_unbound	00:03:25	1
833760	99	66	58,6	cyclictest	1003076	-21	kworker/u4:3+events_unbound	00:03:25	1
833760	99	65	57,6	cyclictest	894053	-21	kworker/u4:3+events_unbound	21:52:50	1
833759	99	65	48,7	cyclictest	977167	-21	kworker/u4:5+events_unbound	23:40:21	0
833760	99	64	52,5	cyclictest	0	-21	swapper/1	23:25:38	1
833759	99	62	55,5	cyclictest	833682	-21	kworker/u4:0+events_unbound	19:17:16	0
833759	99	61	51,8	cyclictest	918218	-21	df_abs	22:10:19	0
833759	99	61	44,6	cyclictest	840103	-21	kworker/u4:3+events_unbound	19:45:03	0
833759	99	60	53,5	cyclictest	875970	-21	kworker/u4:1+events_unbound	21:24:59	0
833759	99	60	37,20	cyclictest	853455	-21	fschecks_count	20:25:19	0
833760	99	59	51,6	cyclictest	955053	-21	kworker/u4:2+events_unbound	22:53:17	1
833759	99	59	52,5	cyclictest	1045470	-21	xargs	00:35:38	0
833759	99	59	47,8	cyclictest	833756	-21	cyclictest	21:37:11	0
833759	99	58	49,7	cyclictest	958358	-21	switchtime	22:55:37	0
833759	99	57	51,4	cyclictest	840104	-21	kworker/u4:4+events_unbound	20:22:27	0
833760	99	56	39,6	cyclictest	958855	-21	kworker/u4:5+events_unbound	22:56:08	1
833760	99	55	47,6	cyclictest	1011919	-21	kworker/u4:11+events_unbound	00:08:27	1
833760	99	55	45,7	cyclictest	905176	-21	fschecks_time	21:55:19	1
833760	99	55	38,5	cyclictest	1011919	-21	kworker/u4:11+events_unbound	00:17:02	1
833759	99	55	50,3	cyclictest	980995	-21	kworker/u4:7+events_unbound	23:40:02	0
833759	99	55	44,8	cyclictest	850802	-21	df	20:15:19	0
833759	99	55	41,9	cyclictest	842783	-21	modprobe	19:45:00	0
833760	99	54	48,4	cyclictest	914281	-21	rm	22:05:26	1
833759	99	54	1,37	cyclictest	1	-21	systemd	00:05:30	0
833760	99	53	45,4	cyclictest	840141	-21	apt-get	19:35:06	1
833760	99	53	43,8	cyclictest	876404	-21	sshd	21:22:38	1
833759	99	53	46,5	cyclictest	833683	-21	kworker/u4:1+events_unbound	19:27:18	0
833759	99	52	44,5	cyclictest	985442	-21	ssh	23:26:41	0
833759	99	52	42,7	cyclictest	949656	-21	grep	22:45:40	0
833759	99	52	38,8	cyclictest	0	-21	swapper/0	00:02:16	0
833759	99	52	38,8	cyclictest	0	-21	swapper/0	00:02:15	0
833759	99	52	34,6	cyclictest	911256	-21	kworker/u4:5+events_unbound	22:06:41	0
833760	99	51	43,6	cyclictest	842758	-21	kworker/u4:2+events_unbound	20:02:22	1
833760	99	51	43,5	cyclictest	910536	-21	unixbench_singl	22:00:47	1
833760	99	51	43,5	cyclictest	864585	-21	latency_hist	21:10:00	1
833759	99	51	44,5	cyclictest	972743	-21	kworker/u4:10+events_unbound	23:14:00	0
833759	99	51	44,5	cyclictest	906775	-21	kworker/u4:10+events_unbound	22:00:00	0
833759	99	51	43,5	cyclictest	833756	-21	cyclictest	22:25:30	0
833759	99	51	33,16	cyclictest	939514	-21	munin-plugin-st	22:35:01	0
833759	99	51	33,16	cyclictest	939514	-21	munin-plugin-st	22:35:00	0
833760	99	50	43,5	cyclictest	887811	-21	gcc	21:35:24	1
833760	99	50	43,5	cyclictest	1033389	-21	kworker/u4:2+events_unbound	00:28:27	1
833760	99	50	41,7	cyclictest	837560	-21	kworker/u4:12+events_unbound	20:32:30	1
833760	99	50	40,7	cyclictest	1005265	-21	aten2__	23:50:15	1
833760	99	50	33,5	cyclictest	933485	-21	kworker/u4:12+events_unbound	22:38:59	1
833760	99	50	33,5	cyclictest	933485	-21	kworker/u4:12+events_unbound	22:38:59	1
833759	99	50	43,5	cyclictest	928411	-21	kworker/u4:3+events_unbound	22:21:58	0
833759	99	50	43,5	cyclictest	896892	-21	ld	21:45:35	0
833759	99	50	43,5	cyclictest	1003076	-21	kworker/u4:3+events_unbound	23:51:00	0
833759	99	50	43,4	cyclictest	923350	-21	/usr/sbin/munin	22:15:36	0
833759	99	50	35,10	cyclictest	1042317	-21	ssh	00:32:14	0
833760	99	49	4,33	cyclictest	945237	-21	ssh	22:40:43	1
833760	99	49	42,5	cyclictest	846622	-21	idleruntime-cro	20:00:01	1
833760	99	49	42,5	cyclictest	812998	-21	kworker/u4:5+events_unbound	19:35:01	1
833760	99	49	41,6	cyclictest	948969	-21	fschecks_time	22:45:21	1
833760	99	49	41,6	cyclictest	861573	-21	sendmail_mailqu	20:55:38	1
833760	99	49	40,7	cyclictest	849142	-21	systemd	20:07:22	1
833759	99	49	41,5	cyclictest	933485	-21	kworker/u4:12-rpciod	23:00:32	0
833759	99	49	32,15	cyclictest	1030047	-21	sshd	00:18:28	0
833760	99	48	41,5	cyclictest	966862	-21	ntpq	23:05:34	1
833760	99	48	39,7	cyclictest	852991	-21	systemd	20:22:25	1
833760	99	48	39,6	cyclictest	0	-21	swapper/1	21:10:22	1
833760	99	48	39,6	cyclictest	0	-21	swapper/1	19:15:27	1
833759	99	48	41,5	cyclictest	833756	-21	cyclictest	21:30:01	0
833759	99	48	40,6	cyclictest	1033389	-21	kworker/u4:2+events_unbound	00:27:00	0
833760	99	47	40,5	cyclictest	926761	-21	grep	22:20:14	1
833760	99	47	40,5	cyclictest	1031688	-21	fschecks_count	00:20:22	1
833760	99	47	39,6	cyclictest	897334	-21	unixbench_singl	21:45:42	1
833760	99	47	39,5	cyclictest	834175	-21	fschecks_count	19:10:19	1
833760	99	47	38,6	cyclictest	955054	-21	kworker/u4:3-rpciod	23:05:00	1
833760	99	47	37,7	cyclictest	993142	-21	/usr/sbin/munin	23:35:38	1
833760	99	47	35,7	cyclictest	0	-21	swapper/1	23:20:23	1
833759	99	47	38,7	cyclictest	844575	-21	fschecks_time	19:50:19	0
833760	99	46	39,5	cyclictest	974740	-21	aten2__	23:15:14	1
833760	99	46	39,5	cyclictest	936557	-21	ls	22:30:39	1
833760	99	46	39,5	cyclictest	936557	-21	ls	22:30:38	1
833760	99	46	39,5	cyclictest	1013610	-21	sh	00:00:01	1
833760	99	46	38,5	cyclictest	849628	-21	fschecks_count	20:10:22	1
833760	99	46	35,6	cyclictest	0	-21	swapper/1	00:30:16	1
833759	99	46	40,4	cyclictest	880499	-21	kworker/u4:10+events_unbound	21:34:59	0
833759	99	46	38,6	cyclictest	834018	-21	aten_r7power_po	19:10:16	0
833760	99	45	36,7	cyclictest	988805	-21	processes	23:30:37	1
833760	99	45	36,7	cyclictest	919201	-21	unixbench_multi	22:10:40	1
833760	99	45	30,11	cyclictest	0	-21	swapper/1	22:15:34	1
833759	99	45	38,5	cyclictest	840101	-21	kworker/u4:0+events_unbound	20:40:03	0
833759	99	45	25,17	cyclictest	0	-21	swapper/0	20:00:00	0
833760	99	44	38,4	cyclictest	998661	-21	kworker/u4:4+events_unbound	23:46:59	1
833760	99	44	36,6	cyclictest	875971	-21	kworker/u4:3-rpciod	21:35:02	1
833760	99	44	36,6	cyclictest	0	-21	swapper/1	22:25:22	1
833760	99	44	26,6	cyclictest	1042209	-21	kworker/u4:6+events_unbound	00:38:00	1
833759	99	44	37,5	cyclictest	1022773	-21	cut	00:10:16	0
833759	99	44	37,5	cyclictest	1013783	-21	cat	00:00:01	0
833759	99	44	32,10	cyclictest	0	-21	swapper/0	23:06:09	0
833760	99	43	36,5	cyclictest	843304	-21	fschecks_time	19:45:19	1
833760	99	43	36,5	cyclictest	842758	-21	kworker/u4:2+events_unbound	20:17:25	1
833760	99	43	34,6	cyclictest	856087	-21	gltestperf	20:35:22	1
833760	99	43	34,6	cyclictest	0	-21	swapper/1	21:15:18	1
833759	99	43	36,5	cyclictest	979205	-21	aten_r7power_po	23:20:14	0
833759	99	43	35,6	cyclictest	869472	-21	aten_r7power_vo	21:15:17	0
833759	99	43	34,5	cyclictest	998662	-21	kworker/u4:6-rpciod	23:45:29	0
833759	99	43	33,7	cyclictest	963899	-21	kworker/u4:1-rpciod	23:15:15	0
833760	99	42	33,6	cyclictest	0	-21	swapper/1	23:10:29	1
833760	99	42	33,6	cyclictest	0	-21	swapper/1	00:10:17	1
833759	99	42	35,5	cyclictest	865392	-21	if_eth0	21:10:24	0
833759	99	42	34,6	cyclictest	836625	-21	aten_r7power_vo	19:20:16	0
833759	99	42	33,5	cyclictest	847495	-21	grep	20:00:35	0
833759	99	41	36,4	cyclictest	850412	-21	kworker/u4:6+events_unbound	20:14:02	0
833759	99	41	32,7	cyclictest	864347	-21	unixbench-2d	21:05:38	0
833759	99	41	23,15	cyclictest	0	-21	swapper/0	19:30:19	0
833760	99	40	33,5	cyclictest	841982	-21	fschecks_time	19:40:19	1
833760	99	40	32,5	cyclictest	0	-21	swapper/1	20:40:17	1
833760	99	40	31,6	cyclictest	0	-21	swapper/1	20:45:39	1
833759	99	39	30,7	cyclictest	860865	-21	aten2__	20:55:18	0
833760	99	38	30,5	cyclictest	0	-21	swapper/1	19:20:31	1
833760	99	38	26,8	cyclictest	0	-21	swapper/1	20:50:37	1
833759	99	37	27,7	cyclictest	0	-21	swapper/0	20:30:15	0
833760	99	36	22,11	cyclictest	845067	-21	sed	19:50:37	1
833760	99	35	26,6	cyclictest	0	-21	swapper/1	21:00:30	1
833759	99	28	9,5	cyclictest	14	-21	ksoftirqd/0	19:10:00	0
833760	99	25	17,5	cyclictest	0	-21	swapper/1	19:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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