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 Thu Jul 30, 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
939860	99	103	96,5	cyclictest	957700	-21	kworker/u4:8+events_unbound	20:20:49	1
939860	99	100	92,5	cyclictest	939799	-21	kworker/u4:0+events_unbound	19:25:38	1
939859	99	96	52,41	cyclictest	0	-21	swapper/0	23:35:12	0
939860	99	92	84,6	cyclictest	1098326	-21	kworker/u4:11+events_unbound	23:41:28	1
939859	99	92	81,8	cyclictest	1005051	-21	kworker/u4:4+events_unbound	22:01:10	0
939860	99	87	79,6	cyclictest	1058547	-21	kworker/u4:10+events_unbound	22:51:18	1
939859	99	84	60,19	cyclictest	53	-21	kswapd0	00:00:08	0
939859	99	82	53,13	cyclictest	0	-21	swapper/0	00:30:10	0
939859	99	82	53,13	cyclictest	0	-21	swapper/0	00:30:10	0
939860	99	78	69,6	cyclictest	995861	-21	kworker/u4:19+events_unbound	21:46:06	1
939859	99	78	6,23	cyclictest	1043744	-21	ssh	22:30:23	0
939859	99	74	67,5	cyclictest	986693	-21	kworker/u4:2+events_unbound	21:45:33	0
939859	99	74	31,40	cyclictest	0	-21	swapper/0	23:50:16	0
939859	99	72	38,31	cyclictest	1088398	-21	sshd	23:20:37	0
939859	99	72	38,31	cyclictest	1088398	-21	sshd	23:20:36	0
939860	99	71	62,5	cyclictest	1067490	-21	kworker/u4:3+events_unbound	23:06:20	1
939860	99	70	61,6	cyclictest	928740	-21	kworker/u4:7+events_unbound	19:15:36	1
939859	99	70	32,6	cyclictest	0	-21	swapper/0	00:05:30	0
939859	99	70	32,35	cyclictest	967311	-21	gltestperf	20:55:19	0
939860	99	69	60,6	cyclictest	931303	-21	kworker/u4:1+events_unbound	20:05:45	1
939859	99	69	32,6	cyclictest	0	-21	swapper/0	21:25:27	0
939859	99	69	26,41	cyclictest	0	-21	swapper/0	23:40:26	0
939859	99	69	21,42	cyclictest	256	50	irq/23-42890000.ethernet	22:40:06	0
939860	99	68	60,5	cyclictest	1151444	-21	kworker/u4:4+events_unbound	00:38:26	1
939859	99	68	33,5	cyclictest	1048627	-21	mailstats	22:35:40	0
939859	99	67	33,31	cyclictest	0	-21	swapper/0	20:00:01	0
939859	99	66	31,5	cyclictest	0	-21	swapper/0	21:20:11	0
939859	99	66	30,33	cyclictest	942097	-21	switchtime	19:15:38	0
939859	99	66	29,6	cyclictest	0	-21	swapper/0	00:25:31	0
939859	99	65	5,26	cyclictest	1154505	-21	ntpq	00:35:36	0
939859	99	65	27,5	cyclictest	0	-21	swapper/0	20:30:26	0
939860	99	64	57,5	cyclictest	1081013	-21	kworker/u4:10+events_unbound	23:31:26	1
939860	99	64	55,6	cyclictest	977504	-21	kworker/u4:10+events_unbound	21:21:01	1
939860	99	63	56,5	cyclictest	1045572	-21	kworker/u4:5+events_unbound	22:41:16	1
939859	99	63	32,5	cyclictest	1084854	-21	kworker/u4:12-rpciod	23:55:36	0
939859	99	63	30,7	cyclictest	948042	-21	fschecks_time	19:40:18	0
939859	99	63	26,7	cyclictest	939856	-21	cyclictest	22:26:58	0
939859	99	62	34,4	cyclictest	928741	-21	kworker/u4:8-xprtiod	19:25:38	0
939859	99	60	5,16	cyclictest	1092684	-21	ntpq	23:25:30	0
939859	99	60	50,8	cyclictest	739164	-21	kworker/u4:3+events_unbound	19:20:37	0
939859	99	60	28,5	cyclictest	931303	-21	kworker/u4:1+rpciod	19:40:01	0
939859	99	60	27,10	cyclictest	0	-21	swapper/0	00:15:21	0
939860	99	59	53,4	cyclictest	1134171	-21	kworker/u4:6+events_unbound	00:15:02	1
939860	99	59	44,11	cyclictest	0	-21	swapper/1	22:35:30	1
939859	99	59	5,32	cyclictest	1109536	-21	ssh	23:45:15	0
939859	99	59	49,7	cyclictest	1137981	-21	kworker/u4:8+events_unbound	00:23:23	0
939860	99	58	51,5	cyclictest	1005051	-21	kworker/u4:4+events_unbound	22:10:04	1
939860	99	58	47,7	cyclictest	1092228	-21	basename	23:25:18	1
939860	99	58	46,8	cyclictest	1034944	-21	ld	22:20:34	1
939860	99	56	45,8	cyclictest	0	-21	swapper/1	19:10:33	1
939859	99	56	49,5	cyclictest	957701	-21	kworker/u4:9+events_unbound	20:25:49	0
939859	99	56	3,47	cyclictest	1069476	-21	apt-get	23:00:07	0
939859	99	55	48,5	cyclictest	962908	-21	kworker/u4:8+events_unbound	20:40:53	0
939859	99	55	47,6	cyclictest	969311	-21	kworker/u4:12+events_unbound	21:05:58	0
939860	99	54	37,14	cyclictest	53	-21	kswapd0	00:00:09	1
939859	99	54	47,5	cyclictest	924810	-21	kworker/u4:4+events_unbound	19:10:01	0
939860	99	53	40,10	cyclictest	995858	-21	kworker/u4:8+events_unbound	21:40:15	1
939859	99	53	45,6	cyclictest	944938	-21	kworker/u4:17+events_unbound	19:45:42	0
939860	99	52	44,6	cyclictest	939856	-21	cyclictest	00:20:25	1
939860	99	52	32,6	cyclictest	965470	-21	kworker/u4:7+events_unbound	21:55:00	1
939859	99	52	43,6	cyclictest	53	-21	kswapd0	22:20:35	0
939859	99	52	43,6	cyclictest	1063034	-21	kworker/u4:0-rpciod	22:55:20	0
939859	99	52	42,8	cyclictest	966733	-21	systemd	20:50:54	0
939859	99	51	39,9	cyclictest	1000479	-21	ssh	21:42:19	0
939860	99	50	42,6	cyclictest	939856	-21	cyclictest	22:05:33	1
939860	99	50	42,6	cyclictest	1140232	-21	latency_hist	00:20:01	1
939860	99	50	34,10	cyclictest	0	-21	swapper/1	21:15:23	1
939859	99	50	43,5	cyclictest	947477	-21	kworker/u4:3+events_unbound	19:50:42	0
939859	99	50	42,5	cyclictest	0	-21	swapper/0	22:10:23	0
939859	99	50	31,15	cyclictest	53	-21	kswapd0	22:05:16	0
939860	99	49	42,5	cyclictest	972136	-21	timerwakeupswit	21:10:41	1
939860	99	49	42,5	cyclictest	953548	-21	sendmail_mailqu	20:00:35	1
939860	99	49	40,6	cyclictest	0	-21	swapper/1	00:33:24	1
939860	99	49	40,6	cyclictest	0	-21	swapper/1	00:33:23	1
939860	99	49	38,8	cyclictest	1127677	-21	gltestperf	00:05:25	1
939860	99	49	38,8	cyclictest	1083591	-21	uname	23:15:19	1
939860	99	49	33,11	cyclictest	0	-21	swapper/1	21:30:29	1
939859	99	49	29,18	cyclictest	962151	-21	fschecks_time	20:35:23	0
939859	99	49	26,21	cyclictest	940339	-21	fschecks_time	19:10:20	0
939860	99	48	41,5	cyclictest	969075	-21	awk	21:00:36	1
939860	99	48	41,5	cyclictest	1033931	-21	latency_hist	22:20:02	1
939860	99	48	40,5	cyclictest	1081012	-21	kworker/u4:8-rpciod	23:36:07	1
939859	99	48	27,18	cyclictest	1061115	-21	cut	22:50:19	0
939860	99	47	39,5	cyclictest	948508	-21	switchtime	19:40:40	1
939860	99	47	37,8	cyclictest	1090029	-21	kworker/u4:4-xprtiod	23:50:40	1
939860	99	47	37,7	cyclictest	1144983	-21	aten_r7power_po	00:25:15	1
939860	99	47	37,7	cyclictest	0	-21	swapper/1	23:21:24	1
939860	99	47	37,7	cyclictest	0	-21	swapper/1	23:21:23	1
939860	99	47	2,36	cyclictest	1043759	-21	ntpq	22:30:24	1
939859	99	47	6,12	cyclictest	1030285	-21	ntpq	22:15:27	0
939859	99	47	41,4	cyclictest	1011887	-21	fschecks_time	21:55:18	0
939859	99	47	39,6	cyclictest	1007368	-21	fschecks_count	21:50:16	0
939859	99	47	38,7	cyclictest	53	-21	kswapd0	23:30:11	0
939859	99	47	38,6	cyclictest	956602	-21	/usr/sbin/munin	20:15:36	0
939860	99	46	39,5	cyclictest	962121	-21	fschecks_time	20:35:24	1
939860	99	46	36,6	cyclictest	0	-21	swapper/1	20:40:37	1
939860	99	46	35,8	cyclictest	943252	-21	sshd	19:20:36	1
939860	99	46	34,9	cyclictest	0	-21	swapper/1	21:35:11	1
939860	99	46	32,9	cyclictest	0	-21	swapper/1	23:45:39	1
939859	99	46	37,7	cyclictest	1083407	-21	fschecks_time	23:15:17	0
939860	99	45	36,7	cyclictest	1078866	-21	df_abs	23:10:18	1
939859	99	45	39,4	cyclictest	989483	-21	sed	21:30:21	0
939859	99	45	24,18	cyclictest	0	-21	swapper/0	00:10:16	0
939860	99	44	38,4	cyclictest	1015908	-21	latency_hist	22:00:01	1
939860	99	44	37,5	cyclictest	985558	-21	switchtime	21:25:40	1
939860	99	44	37,5	cyclictest	1056734	-21	cpu	22:45:17	1
939860	99	44	36,6	cyclictest	1063034	-21	kworker/u4:0-rpciod	23:00:38	1
939860	99	44	34,6	cyclictest	965469	-21	kworker/u4:5-rpciod	20:55:14	1
939859	99	44	34,7	cyclictest	975895	-21	/usr/sbin/munin	21:15:19	0
939860	99	43	36,5	cyclictest	957695	-21	kworker/u4:1+events_unbound	20:35:00	1
939860	99	43	35,5	cyclictest	1045573	-21	kworker/u4:6-rpciod	22:55:23	1
939860	99	43	34,5	cyclictest	0	-21	swapper/1	20:10:19	1
939860	99	43	32,6	cyclictest	0	-21	swapper/1	22:25:12	1
939860	99	43	14,26	cyclictest	0	-21	swapper/1	23:55:27	1
939859	99	43	35,6	cyclictest	958323	-21	gltestperf	20:20:19	0
939859	99	43	34,6	cyclictest	0	-21	swapper/0	23:05:39	0
939859	99	43	34,6	cyclictest	0	-21	swapper/0	20:05:27	0
939859	99	43	33,8	cyclictest	1078707	-21	aten_r7power_cu	23:10:16	0
939859	99	43	23,18	cyclictest	0	-21	swapper/0	22:45:38	0
939860	99	42	35,5	cyclictest	949369	-21	gltestperf	19:45:18	1
939860	99	42	35,5	cyclictest	947454	-21	unixbench_singl	19:35:38	1
939860	99	42	34,5	cyclictest	1005051	-21	kworker/u4:4-xprtiod	22:00:36	1
939860	99	42	33,7	cyclictest	957456	-21	sshd	20:15:36	1
939860	99	42	33,6	cyclictest	950045	-21	kworker/u4:9-rpciod	19:50:22	1
939859	99	42	13,23	cyclictest	971787	-21	ntpq	21:10:35	0
939860	99	41	34,5	cyclictest	970709	-21	latency_hist	21:10:03	1
939860	99	41	34,5	cyclictest	964530	-21	aten_r7power_vo	20:45:16	1
939860	99	41	26,11	cyclictest	960290	-21	modprobe	20:29:59	1
939859	99	41	34,5	cyclictest	968301	-21	aten_r7power_en	21:00:16	0
939859	99	41	30,9	cyclictest	994003	-21	if_err_eth0	21:35:19	0
939860	99	40	30,7	cyclictest	0	-21	swapper/1	20:50:38	1
939860	99	39	31,6	cyclictest	0	-21	swapper/1	19:30:18	1
939860	99	38	29,7	cyclictest	0	-21	swapper/1	19:10:00	1
939859	99	38	29,6	cyclictest	0	-21	swapper/0	20:45:21	0
939859	99	37	30,5	cyclictest	939856	-21	cyclictest	20:10:24	0
939860	99	36	27,7	cyclictest	0	-21	swapper/1	19:55:20	1
939859	99	36	28,5	cyclictest	0	-21	swapper/0	20:00:19	0
939859	99	35	27,6	cyclictest	946047	-21	timerwakeupswit	19:30:36	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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