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 highest latencies:

System rack7slot2.osadl.org (updated Mon Apr 13, 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
191378	99	105	95,7	cyclictest	272775	-21	kworker/u4:9+events_unbound	10:10:32	0
191378	99	96	87,6	cyclictest	217150	-21	kworker/u4:4+events_unbound	09:20:26	0
191378	99	93	85,6	cyclictest	316911	-21	kworker/u4:5+events_unbound	11:30:47	0
191378	99	88	68,4	cyclictest	180092	-21	kworker/u4:13+events_unbound	09:10:25	0
191378	99	87	70,6	cyclictest	382087	-21	kworker/u4:8+events_unbound	12:15:55	0
191378	99	85	75,7	cyclictest	242319	-21	kworker/u4:11+events_unbound	09:55:31	0
191378	99	83	76,5	cyclictest	390939	-21	kworker/u4:5+events_unbound	12:25:56	0
191378	99	83	75,6	cyclictest	264526	-21	kworker/u4:5+events_unbound	10:25:33	0
191381	99	81	75,4	cyclictest	217149	-21	kworker/u4:2+events_unbound	08:50:20	1
191378	99	80	72,6	cyclictest	208104	-21	kworker/u4:8+events_unbound	08:40:22	0
191381	99	77	31,43	cyclictest	0	-21	swapper/1	12:30:19	1
191381	99	76	67,7	cyclictest	351882	-21	kworker/u4:3+events_unbound	12:10:54	1
191381	99	74	69,3	cyclictest	191304	-21	kworker/u4:2+events_unbound	07:49:59	1
191378	99	73	62,8	cyclictest	273412	-21	kworker/u4:17+events_unbound	10:35:35	0
191378	99	72	64,6	cyclictest	268985	-21	kworker/u4:7+events_unbound	10:05:01	0
191381	99	71	36,32	cyclictest	327671	-21	aten2__	11:10:16	1
191378	99	71	57,11	cyclictest	53	-21	kswapd0	12:05:12	0
191378	99	71	43,24	cyclictest	256	50	irq/23-42890000.ethernet	10:05:10	0
191381	99	70	61,6	cyclictest	0	-21	swapper/1	12:05:42	1
191381	99	70	46,22	cyclictest	276001	-21	ssh	10:10:24	1
191381	99	70	30,36	cyclictest	0	-21	swapper/1	09:15:36	1
191378	99	68	50,12	cyclictest	210700	-21	modprobe	08:25:01	0
191381	99	67	45,20	cyclictest	1066	-21	snmpd	09:50:13	1
191381	99	67	30,33	cyclictest	0	-21	swapper/1	11:04:57	1
191381	99	67	28,36	cyclictest	358637	-21	fschecks_time	11:45:19	1
191381	99	67	27,5	cyclictest	0	-21	swapper/1	09:20:30	1
191381	99	66	40,24	cyclictest	241000	-21	uname	09:30:23	1
191381	99	66	38,25	cyclictest	209429	-21	munin-run	08:20:00	1
191381	99	66	34,29	cyclictest	323349	-21	aten_r7power_po	11:05:17	1
191381	99	66	34,29	cyclictest	0	-21	swapper/1	09:25:26	1
191381	99	66	30,33	cyclictest	0	-21	swapper/1	10:00:25	1
191378	99	66	57,7	cyclictest	218421	-21	kworker/u4:7+events_unbound	09:40:30	0
191381	99	65	31,31	cyclictest	0	-21	swapper/1	12:20:17	1
191378	99	65	5,20	cyclictest	253269	-21	apt-get	09:45:09	0
191381	99	64	55,6	cyclictest	181362	-21	kworker/u4:15+events_unbound	07:20:00	1
191381	99	64	4,44	cyclictest	354580	-21	ssh	11:40:25	1
191381	99	64	32,29	cyclictest	0	-21	swapper/1	10:40:35	1
191381	99	64	32,29	cyclictest	0	-21	swapper/1	10:40:34	1
191381	99	64	3,21	cyclictest	393907	-21	ssh	12:25:37	1
191378	99	64	57,5	cyclictest	191304	-21	kworker/u4:2+events_unbound	07:55:01	0
191378	99	64	52,6	cyclictest	316911	-21	kworker/u4:5+events_unbound	11:17:01	0
191381	99	63	33,27	cyclictest	217148	-21	kworker/u4:0-rpciod	09:10:39	1
191381	99	63	32,28	cyclictest	349911	-21	fschecks_time	11:35:20	1
191381	99	63	29,32	cyclictest	402652	-21	mailstats	12:35:37	1
191381	99	63	28,4	cyclictest	0	-21	swapper/1	10:30:26	1
191381	99	63	28,33	cyclictest	0	-21	swapper/1	10:48:16	1
191381	99	63	26,34	cyclictest	0	-21	swapper/1	07:35:37	1
191381	99	63	23,8	cyclictest	314941	-21	ssh	10:55:22	1
191381	99	62	34,26	cyclictest	370958	-21	latency_hist	12:00:01	1
191381	99	62	29,30	cyclictest	0	-21	swapper/1	08:22:57	1
191381	99	62	22,8	cyclictest	0	-21	swapper/1	10:20:36	1
191381	99	61	7,13	cyclictest	0	-21	swapper/1	09:35:41	1
191381	99	61	29,28	cyclictest	0	-21	swapper/1	12:15:25	1
191381	99	61	24,6	cyclictest	0	-21	swapper/1	10:10:01	1
191378	99	61	53,6	cyclictest	299075	-21	kworker/u4:1+events_unbound	11:25:46	0
191378	99	61	4,53	cyclictest	244552	-21	apt-get	09:35:10	0
191381	99	60	25,6	cyclictest	0	-21	swapper/1	10:25:34	1
191381	99	60	24,6	cyclictest	0	-21	swapper/1	10:35:17	1
191381	99	60	17,11	cyclictest	192449	-21	sed	07:10:37	1
191378	99	60	38,14	cyclictest	390937	-21	kworker/u4:1+xprtiod	12:30:08	0
191381	99	59	27,7	cyclictest	202724	-21	timerandwakeup	07:50:37	1
191381	99	59	27,6	cyclictest	0	-21	swapper/1	09:40:36	1
191381	99	59	24,9	cyclictest	0	-21	swapper/1	10:15:42	1
191381	99	59	22,7	cyclictest	341967	-21	timerwakeupswit	11:25:41	1
191381	99	59	21,10	cyclictest	0	-21	swapper/1	08:55:20	1
191378	99	59	52,5	cyclictest	285307	-21	/usr/sbin/munin	10:20:39	0
191378	99	59	51,5	cyclictest	367960	-21	switchtime	11:55:37	0
191381	99	58	28,5	cyclictest	254064	-21	gltestperf	09:45:29	1
191381	99	58	27,29	cyclictest	337299	-21	proc_pri	11:20:34	1
191381	99	58	22,6	cyclictest	0	-21	swapper/1	12:00:40	1
191381	99	57	24,30	cyclictest	0	-21	swapper/1	10:50:11	1
191381	99	57	21,9	cyclictest	0	-21	swapper/1	09:00:37	1
191381	99	56	6,21	cyclictest	345970	-21	ntpq	11:30:33	1
191381	99	56	26,6	cyclictest	0	-21	swapper/1	09:05:18	1
191381	99	56	26,4	cyclictest	0	-21	swapper/1	11:50:26	1
191378	99	56	49,5	cyclictest	299075	-21	kworker/u4:1+events_unbound	10:52:58	0
191378	99	56	46,7	cyclictest	323219	-21	dpkg	11:05:12	0
191378	99	56	42,11	cyclictest	0	-21	swapper/0	11:50:18	0
191378	99	56	36,18	cyclictest	354032	-21	aten_r7power_en	11:40:17	0
191381	99	55	8,14	cyclictest	262928	-21	ssh	09:55:24	1
191378	99	54	5,34	cyclictest	241232	-21	ssh	09:30:31	0
191378	99	54	46,6	cyclictest	343047	-21	kworker/u4:0+events_unbound	11:36:05	0
191378	99	54	18,25	cyclictest	0	-21	swapper/0	12:20:36	0
191378	99	53	46,5	cyclictest	321395	-21	kworker/u4:9+events_unbound	11:21:59	0
191378	99	53	46,5	cyclictest	213224	-21	kworker/u4:17+events_unbound	08:40:01	0
191378	99	52	45,5	cyclictest	371785	-21	/usr/sbin/munin	12:00:21	0
191378	99	52	40,7	cyclictest	256	50	irq/23-42890000.ethernet	07:40:01	0
191378	99	52	30,15	cyclictest	37	-21	kcompactd0	11:45:34	0
191378	99	51	41,8	cyclictest	328794	-21	timerwakeupswit	11:10:41	0
191378	99	50	43,4	cyclictest	0	-21	swapper/0	10:15:42	0
191378	99	50	42,6	cyclictest	258299	-21	ls	09:50:20	0
191378	99	50	39,9	cyclictest	212378	-21	systemd	08:30:19	0
191381	99	49	41,6	cyclictest	209376	-21	kworker/u4:12+events_unbound	08:25:20	1
191378	99	49	41,5	cyclictest	211194	-21	fschecks_time	08:25:18	0
191378	99	48	40,6	cyclictest	228094	-21	cat	09:15:38	0
191378	99	48	34,8	cyclictest	201666	-21	kworker/u4:2	07:50:01	0
191381	99	47	39,5	cyclictest	215616	-21	timerwakeupswit	08:40:36	1
191378	99	47	39,5	cyclictest	318548	-21	ssh	11:00:01	0
191378	99	47	26,19	cyclictest	305979	-21	fschecks_count	10:45:21	0
191381	99	46	38,5	cyclictest	214533	-21	apt	08:40:00	1
191378	99	46	40,4	cyclictest	220235	-21	fschecks_time	09:00:18	0
191378	99	46	39,5	cyclictest	293847	-21	unixbench_multi	10:30:42	0
191378	99	46	37,7	cyclictest	194397	-21	fschecks_count	07:20:19	0
191378	99	46	35,5	cyclictest	217771	-21	grep	08:50:21	0
191378	99	46	11,27	cyclictest	256	50	irq/23-42890000.ethernet	07:10:01	0
191378	99	45	37,5	cyclictest	299077	-21	kworker/u4:3-xprtiod	10:40:29	0
191378	99	45	37,5	cyclictest	299077	-21	kworker/u4:3-xprtiod	10:40:28	0
191378	99	45	35,8	cyclictest	200405	-21	latency_hist	07:45:01	0
191381	99	44	37,5	cyclictest	332966	-21	/usr/sbin/munin	11:15:37	1
191381	99	44	36,5	cyclictest	212203	-21	aten_r7power_cu	08:30:18	1
191381	99	44	36,5	cyclictest	197452	-21	switchtime	07:30:35	1
191378	99	44	36,6	cyclictest	319118	-21	diskmemload	11:00:19	0
191378	99	44	36,6	cyclictest	203213	-21	aten2__	07:55:19	0
191378	99	44	34,7	cyclictest	218662	-21	aten_r7power_cu	08:55:17	0
191378	99	44	34,6	cyclictest	256	50	irq/23-42890000.ethernet	12:35:27	0
191378	99	43	35,5	cyclictest	207169	-21	cpu	08:10:16	0
191378	99	43	34,7	cyclictest	196916	-21	fschecks_count	07:30:18	0
191378	99	43	34,6	cyclictest	0	-21	swapper/0	08:20:01	0
191378	99	43	33,8	cyclictest	206004	-21	fschecks_count	08:05:19	0
191378	99	43	32,9	cyclictest	196466	-21	cron	07:30:01	0
191378	99	43	32,9	cyclictest	196466	-21	cron	07:30:00	0
191381	99	42	35,5	cyclictest	217185	-21	awk	08:50:00	1
191381	99	42	34,6	cyclictest	204920	-21	gltestperf	08:00:19	1
191381	99	42	32,8	cyclictest	207203	-21	cpu	08:10:17	1
191378	99	42	35,5	cyclictest	193925	-21	apt	07:19:59	0
191378	99	42	33,6	cyclictest	0	-21	swapper/0	07:10:37	0
191378	99	42	33,5	cyclictest	380909	-21	switchtime	12:10:37	0
191378	99	42	32,8	cyclictest	240279	-21	latency_hist	09:30:02	0
191378	99	42	31,7	cyclictest	180092	-21	kworker/u4:13-rpciod	08:00:36	0
191381	99	41	34,5	cyclictest	199246	-21	aten2__	07:40:16	1
191378	99	41	32,6	cyclictest	0	-21	swapper/0	08:45:19	0
191381	99	40	33,5	cyclictest	205560	-21	kworker/u4:3-rpciod	08:05:17	1
191378	99	40	33,5	cyclictest	217148	-21	kworker/u4:0+events_unbound	09:10:01	0
191381	99	39	31,5	cyclictest	0	-21	swapper/1	07:55:42	1
191381	99	39	26,10	cyclictest	0	-21	swapper/1	07:20:11	1
191381	99	35	26,6	cyclictest	0	-21	swapper/1	07:25:32	1
191381	99	35	26,6	cyclictest	0	-21	swapper/1	07:25:32	1
191381	99	32	24,5	cyclictest	0	-21	swapper/1	07:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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