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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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 Fri May 15, 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
682452	99	125	113,9	cyclictest	53	-21	kswapd0	22:00:08	0
682452	99	112	101,7	cyclictest	692790	-21	kworker/u4:1+events_unbound	20:52:37	0
682452	99	107	71,32	cyclictest	0	-21	swapper/0	19:25:11	0
682452	99	98	90,5	cyclictest	773745	-21	kworker/u4:12+events_unbound	22:22:49	0
682452	99	88	80,5	cyclictest	896587	-21	kworker/u4:11+events_unbound	00:38:07	0
682453	99	87	67,15	cyclictest	871933	-21	apt-get	00:10:08	1
682452	99	85	46,35	cyclictest	53	-21	kswapd0	00:10:07	0
682453	99	82	65,13	cyclictest	808673	-21	kworker/u4:10-rpciod	23:05:22	1
682452	99	81	70,9	cyclictest	742915	-21	kworker/u4:14+events_unbound	21:42:45	0
682452	99	80	73,5	cyclictest	724846	-21	kworker/u4:6+events_unbound	21:22:39	0
682452	99	78	71,5	cyclictest	808673	-21	kworker/u4:10+events_unbound	23:02:54	0
682452	99	77	70,5	cyclictest	682449	-21	cyclictest	22:52:32	0
682452	99	76	64,9	cyclictest	682449	-21	cyclictest	19:20:11	0
682452	99	73	66,5	cyclictest	720279	-21	kworker/u4:4+events_unbound	21:17:38	0
682452	99	72	64,6	cyclictest	821998	-21	kworker/u4:8+events_unbound	23:12:56	0
682452	99	72	54,6	cyclictest	848091	-21	kworker/u4:5+events_unbound	23:43:01	0
682452	99	70	61,6	cyclictest	848089	-21	kworker/u4:1+events_unbound	00:08:06	0
682453	99	69	3,52	cyclictest	855409	-21	ssh	23:50:30	1
682452	99	68	59,6	cyclictest	671136	-21	kworker/u4:14+events_unbound	19:30:02	0
682453	99	64	53,8	cyclictest	0	-21	swapper/1	00:05:30	1
682452	99	64	55,7	cyclictest	778229	-21	kworker/u4:2+events_unbound	22:35:03	0
682452	99	64	50,5	cyclictest	720278	-21	kworker/u4:2+events_unbound	21:27:42	0
682453	99	61	37,13	cyclictest	685261	-21	apt-get	19:20:11	1
682452	99	61	53,6	cyclictest	720279	-21	kworker/u4:4+events_unbound	21:52:45	0
682453	99	60	53,5	cyclictest	760370	-21	kworker/u4:6+events_unbound	22:07:48	1
682453	99	60	52,6	cyclictest	692792	-21	kworker/u4:4+events_unbound	21:02:36	1
682452	99	60	53,5	cyclictest	821999	-21	kworker/u4:10+events_unbound	23:23:55	0
682452	99	60	52,6	cyclictest	839155	-21	kworker/u4:15+events_unbound	23:32:59	0
682452	99	59	52,6	cyclictest	755837	-21	kworker/u4:7+events_unbound	21:57:46	0
682452	99	58	47,9	cyclictest	671136	-21	kworker/u4:14+events_unbound	20:12:31	0
682452	99	58	46,8	cyclictest	0	-21	swapper/0	23:05:23	0
682452	99	58	35,20	cyclictest	695137	-21	timerandwakeup	19:55:38	0
682453	99	57	48,5	cyclictest	704428	-21	latency_hist	20:35:01	1
682452	99	57	50,5	cyclictest	878726	-21	kworker/u4:11+events_unbound	00:20:01	0
682452	99	57	50,5	cyclictest	694065	-21	kworker/u4:6+events_unbound	19:55:00	0
682452	99	56	46,8	cyclictest	734168	-21	systemd	21:32:42	0
682452	99	56	46,8	cyclictest	734168	-21	systemd	21:32:42	0
682453	99	54	13,15	cyclictest	807169	-21	ntpq	22:55:28	1
682452	99	54	47,5	cyclictest	671136	-21	kworker/u4:14+events_unbound	20:05:32	0
682452	99	54	47,5	cyclictest	671136	-21	kworker/u4:14+events_unbound	20:05:32	0
682453	99	53	43,7	cyclictest	668596	-21	kworker/u4:2+events_unbound	20:27:33	1
682452	99	53	46,5	cyclictest	793683	-21	fschecks_count	22:40:19	0
682452	99	52	45,5	cyclictest	885715	-21	/usr/sbin/munin	00:25:19	0
682452	99	52	45,5	cyclictest	861505	-21	kworker/u4:5+events_unbound	00:00:00	0
682452	99	52	45,5	cyclictest	825247	-21	unixbench_singl	23:15:41	0
682452	99	52	32,18	cyclictest	893895	-21	idleruntime-cro	00:35:00	0
682453	99	51	9,15	cyclictest	792508	-21	ssh	22:39:14	1
682453	99	51	44,5	cyclictest	811204	-21	fschecks_time	23:00:21	1
682453	99	51	44,5	cyclictest	693263	-21	fschecks_count	19:50:19	1
682453	99	51	4,40	cyclictest	741187	-21	ssh	21:40:28	1
682453	99	51	43,5	cyclictest	895019	-21	grep	00:35:34	1
682453	99	51	19,20	cyclictest	0	-21	swapper/1	21:25:29	1
682453	99	51	10,17	cyclictest	726007	-21	ssh	21:23:49	1
682452	99	51	5,41	cyclictest	0	-21	swapper/0	21:05:07	0
682452	99	51	4,39	cyclictest	766701	-21	modprobe	22:10:00	0
682453	99	50	41,5	cyclictest	820241	-21	/usr/sbin/munin	23:10:29	1
682453	99	50	39,9	cyclictest	798965	-21	unixbench_multi	22:45:44	1
682453	99	50	39,9	cyclictest	732572	-21	sendmail_mailtr	21:30:40	1
682453	99	50	39,9	cyclictest	732572	-21	sendmail_mailtr	21:30:40	1
682453	99	50	38,8	cyclictest	53	-21	kswapd0	22:55:01	1
682453	99	50	19,10	cyclictest	829226	-21	ntp_states	23:20:34	1
682452	99	50	43,5	cyclictest	854694	-21	aten2__	23:50:16	0
682452	99	50	39,7	cyclictest	0	-21	swapper/0	23:00:00	0
682453	99	49	43,4	cyclictest	851248	-21	sendmail_mailqu	23:45:38	1
682453	99	49	39,7	cyclictest	787126	-21	kworker/u4:10-rpciod	22:40:40	1
682453	99	49	17,9	cyclictest	0	-21	swapper/1	22:25:15	1
682453	99	49	10,11	cyclictest	757160	-21	ssh	21:58:53	1
682452	99	49	41,7	cyclictest	733881	-21	kworker/u4:1+events_unbound	21:37:00	0
682452	99	49	41,7	cyclictest	733881	-21	kworker/u4:1+events_unbound	21:37:00	0
682452	99	49	32,4	cyclictest	788640	-21	munin-plugin-st	22:35:00	0
682453	99	48	38,7	cyclictest	759161	-21	ld	22:00:41	1
682453	99	48	37,9	cyclictest	709026	-21	ps	20:50:34	1
682453	99	48	17,8	cyclictest	0	-21	swapper/1	00:00:37	1
682452	99	48	42,4	cyclictest	0	-21	swapper/0	22:25:12	0
682452	99	48	39,7	cyclictest	864045	-21	kernelversion	00:00:23	0
682452	99	48	31,15	cyclictest	841491	-21	aten2__	23:35:16	0
682452	99	48	28,17	cyclictest	0	-21	swapper/0	22:45:26	0
682453	99	47	38,7	cyclictest	691297	-21	threads	19:40:36	1
682453	99	47	38,6	cyclictest	874260	-21	kworker/u4:6-rpciod	00:20:38	1
682453	99	47	38,6	cyclictest	689895	-21	sendmail_mailqu	19:35:35	1
682453	99	47	10,11	cyclictest	836945	-21	ssh	23:30:04	1
682452	99	47	40,5	cyclictest	684214	-21	fschecks_time	19:15:18	0
682452	99	47	33,8	cyclictest	0	-21	swapper/0	21:10:27	0
682453	99	46	40,4	cyclictest	719170	-21	processes	21:15:41	1
682453	99	46	39,5	cyclictest	776146	-21	fschecks_time	22:20:18	1
682453	99	46	39,5	cyclictest	682449	-21	cyclictest	23:25:32	1
682453	99	46	37,7	cyclictest	825231	-21	unixbench_singl	23:15:41	1
682453	99	46	37,6	cyclictest	0	-21	swapper/1	23:40:12	1
682453	99	46	36,7	cyclictest	0	-21	swapper/1	21:35:37	1
682453	99	46	36,7	cyclictest	0	-21	swapper/1	21:35:37	1
682453	99	46	10,10	cyclictest	695521	-21	wc	20:00:02	1
682452	99	46	36,8	cyclictest	767363	-21	fschecks_time	22:10:20	0
682452	99	46	30,14	cyclictest	0	-21	swapper/0	00:20:33	0
682452	99	46	26,17	cyclictest	0	-21	swapper/0	20:20:33	0
682453	99	45	38,5	cyclictest	771101	-21	idleruntime-cro	22:15:00	1
682453	99	45	36,7	cyclictest	685007	-21	idleruntime-cro	19:20:01	1
682453	99	45	34,9	cyclictest	883205	-21	kworker/u4:4-rpciod	00:25:21	1
682452	99	45	38,5	cyclictest	707071	-21	aten2__	20:45:15	0
682452	99	45	38,5	cyclictest	0	-21	swapper/0	23:48:43	0
682452	99	45	37,6	cyclictest	748205	-21	sendmail-mta	21:48:48	0
682453	99	44	8,10	cyclictest	844536	-21	ssh	23:38:26	1
682453	99	44	36,6	cyclictest	698528	-21	gltestperf	20:10:19	1
682453	99	44	35,7	cyclictest	686963	-21	fschecks_time	19:25:23	1
682452	99	44	38,4	cyclictest	671138	-21	kworker/u4:16+events_unbound	19:12:26	0
682452	99	44	37,5	cyclictest	822001	-21	kworker/u4:13+events_unbound	23:30:01	0
682452	99	44	37,5	cyclictest	771965	-21	kernelversion	22:15:21	0
682453	99	43	37,4	cyclictest	682839	-21	fschecks_count	19:10:18	1
682453	99	43	36,5	cyclictest	890392	-21	uname	00:30:23	1
682453	99	43	34,7	cyclictest	750643	-21	uptime	21:50:42	1
682453	99	43	34,6	cyclictest	0	-21	swapper/1	22:30:25	1
682452	99	43	37,4	cyclictest	706083	-21	fschecks_time	20:40:18	0
682452	99	43	35,6	cyclictest	701983	-21	aten2__	20:25:13	0
682453	99	42	6,10	cyclictest	748605	-21	ssh	21:49:26	1
682453	99	42	36,4	cyclictest	0	-21	swapper/1	20:07:31	1
682453	99	42	36,4	cyclictest	0	-21	swapper/1	20:07:30	1
682453	99	42	34,5	cyclictest	0	-21	swapper/1	21:10:34	1
682453	99	42	33,7	cyclictest	699585	-21	df_abs	20:15:16	1
682453	99	42	32,7	cyclictest	0	-21	swapper/1	22:15:34	1
682452	99	42	36,4	cyclictest	695593	-21	aten2__	20:00:15	0
682453	99	41	6,21	cyclictest	0	-21	swapper/1	21:05:08	1
682453	99	41	35,4	cyclictest	863140	-21	idleruntime-cro	00:00:00	1
682453	99	41	34,5	cyclictest	705977	-21	df_abs	20:40:16	1
682453	99	41	34,5	cyclictest	696698	-21	latency_hist	20:05:01	1
682453	99	41	33,5	cyclictest	688760	-21	timerandwakeup	19:30:36	1
682452	99	41	32,7	cyclictest	699450	-21	aten_r7power_en	20:15:14	0
682452	99	41	20,18	cyclictest	709838	-21	fschecks_count	20:55:18	0
682453	99	40	34,4	cyclictest	0	-21	swapper/1	20:45:20	1
682453	99	40	21,15	cyclictest	704493	-21	apt-get	20:35:13	1
682453	99	40	12,6	cyclictest	27	1	ktimers/1	00:15:14	1
682452	99	40	34,4	cyclictest	703337	-21	aten_r7power_vo	20:30:16	0
682453	99	39	29,5	cyclictest	0	-21	swapper/1	19:10:01	1
682453	99	38	5,10	cyclictest	709599	-21	apt-get	20:55:11	1
682453	99	38	30,6	cyclictest	701864	-21	latency_hist	20:25:01	1
682453	99	38	29,7	cyclictest	691775	-21	aten_r7power_cu	19:45:17	1
682452	99	38	31,5	cyclictest	668596	-21	kworker/u4:2+events_unbound	20:38:01	0
682452	99	38	27,8	cyclictest	668596	-21	kworker/u4:2-rpciod	19:50:00	0
682452	99	38	27,7	cyclictest	0	-21	swapper/0	21:00:27	0
682452	99	37	30,5	cyclictest	0	-21	swapper/0	19:40:19	0
682452	99	37	29,6	cyclictest	0	-21	swapper/0	19:35:36	0
682452	99	30	12,5	cyclictest	667110	-21	kworker/u4:13+events_unbound	19:10:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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