OSADL QA Farm on Real-time of Mainline Linux

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

Click here to display the system's profile data or here to proceed to next system.

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 100 highest latencies:

System rack7slot2.osadl.org (updated Tue Jul 14, 2026 00:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4136868	99	114	105,6	cyclictest	56221	-21	kworker/u4:12+events_unbound	23:02:24	1
4136868	99	88	80,6	cyclictest	42779	-21	kworker/u4:0+events_unbound	22:42:20	1
4136868	99	87	80,5	cyclictest	42779	-21	kworker/u4:0+events_unbound	22:37:19	1
4136868	99	87	80,5	cyclictest	42779	-21	kworker/u4:0+events_unbound	22:37:19	1
4136868	99	81	74,5	cyclictest	56221	-21	kworker/u4:12+events_unbound	23:47:33	1
4136867	99	80	72,6	cyclictest	60697	-21	kworker/u4:15+events_unbound	22:52:22	0
4136867	99	80	71,7	cyclictest	38299	-21	kworker/u4:20+events_unbound	22:22:18	0
4136867	99	76	69,4	cyclictest	864	-21	basename	21:40:16	0
4136867	99	70	63,5	cyclictest	25484	-21	kworker/u4:8+events_unbound	22:12:16	0
4136868	99	68	58,7	cyclictest	4138100	-21	kworker/u4:10+events_unbound	19:21:46	1
4136868	99	67	57,7	cyclictest	122199	-21	kworker/u4:6+events_unbound	23:57:34	1
4136867	99	67	57,7	cyclictest	4183494	-21	kworker/u4:3+events_unbound	21:52:11	0
4136868	99	64	55,7	cyclictest	4174833	-21	sh	21:17:00	1
4136868	99	62	53,6	cyclictest	47243	-21	kworker/u4:10+events_unbound	22:32:19	1
4136867	99	62	52,7	cyclictest	117732	-21	kworker/u4:0+events_unbound	23:52:33	0
4136868	99	61	56,3	cyclictest	4140763	-21	kworker/u4:0+events_unbound	20:01:50	1
4136868	99	59	50,6	cyclictest	4145960	-21	kworker/u4:5+events_unbound	20:36:57	1
4136868	99	58	49,6	cyclictest	4160092	-21	kworker/u4:10+events_unbound	21:22:03	1
4136868	99	57	50,5	cyclictest	4187965	-21	kworker/u4:6+events_unbound	21:32:07	1
4136868	99	57	50,5	cyclictest	4187965	-21	kworker/u4:6+events_unbound	21:32:06	1
4136868	99	56	43,8	cyclictest	4146850	-21	ps	19:45:36	1
4136868	99	55	48,5	cyclictest	531	-21	in:imuxsock	00:07:35	1
4136868	99	55	48,5	cyclictest	531	-21	in:imuxsock	00:07:35	1
4136868	99	55	47,6	cyclictest	4124290	-21	kworker/u4:2+events_unbound	19:26:46	1
4136868	99	55	46,7	cyclictest	135459	-21	kworker/u4:6+events_unbound	00:27:39	1
4136868	99	55	46,6	cyclictest	0	-21	swapper/1	00:10:25	1
4136868	99	55	45,7	cyclictest	4124293	-21	kworker/u4:6+events_unbound	19:36:48	1
4136867	99	55	49,4	cyclictest	112109	-21	proc_pri	23:45:38	0
4136867	99	55	47,6	cyclictest	147410	-21	unixbench_singl	00:25:43	0
4136867	99	55	45,5	cyclictest	4140763	-21	kworker/u4:0+xprtiod	20:00:16	0
4136868	99	54	47,5	cyclictest	27175	-21	latency_hist	22:10:02	1
4136868	99	54	45,7	cyclictest	38521	-21	sd-accept	22:22:17	1
4136867	99	54	46,5	cyclictest	4126912	-21	kworker/u4:13+events_unbound	19:15:01	0
4136867	99	54	46,5	cyclictest	4126912	-21	kworker/u4:13+events_unbound	19:15:00	0
4136868	99	53	45,6	cyclictest	4158818	-21	kworker/u4:2+events_unbound	21:02:01	1
4136868	99	53	44,6	cyclictest	4124291	-21	kworker/u4:3+events_unbound	19:11:44	1
4136868	99	53	44,6	cyclictest	4124291	-21	kworker/u4:3+events_unbound	19:11:44	1
4136867	99	53	45,6	cyclictest	122197	-21	kworker/u4:4+events_unbound	00:00:01	0
4136867	99	53	44,6	cyclictest	89099	-21	ssh	23:20:15	0
4136868	99	52	46,4	cyclictest	4136864	-21	cyclictest	23:42:31	1
4136868	99	52	45,5	cyclictest	89106	-21	/usr/sbin/munin	23:20:16	1
4136867	99	52	43,7	cyclictest	4172753	-21	aten_r7power_en	21:15:19	0
4136867	99	52	31,18	cyclictest	0	-21	swapper/0	21:10:25	0
4136868	99	51	44,5	cyclictest	124739	-21	fschecks_count	00:00:20	1
4136868	99	51	43,5	cyclictest	138547	-21	timerandwakeup	00:15:41	1
4136868	99	51	42,6	cyclictest	106422	-21	cron	23:40:01	1
4136868	99	51	41,5	cyclictest	122196	-21	kworker/u4:3+events_unbound	00:32:39	1
4136867	99	51	44,5	cyclictest	49147	-21	latency_hist	22:35:01	0
4136867	99	51	43,6	cyclictest	32020	-21	df	22:15:19	0
4136868	99	50	43,5	cyclictest	85721	-21	switchtime	23:15:41	1
4136868	99	50	43,5	cyclictest	4145123	-21	fschecks_count	19:40:21	1
4136868	99	50	40,6	cyclictest	0	-21	swapper/1	22:11:40	1
4136868	99	50	39,8	cyclictest	0	-21	swapper/1	22:00:32	1
4136867	99	50	43,4	cyclictest	4181537	-21	sort	21:25:14	0
4136868	99	49	42,5	cyclictest	32462	-21	ntpq	22:15:29	1
4136868	99	49	42,5	cyclictest	1250	-21	grep	21:40:21	1
4136868	99	49	41,6	cyclictest	4124293	-21	kworker/u4:6+events_unbound	19:16:44	1
4136868	99	49	40,7	cyclictest	78266	-21	systemd	23:07:25	1
4136868	99	49	40,7	cyclictest	4140764	-21	kworker/u4:12+events_unbound	19:31:47	1
4136867	99	49	42,5	cyclictest	0	-21	swapper/0	19:45:37	0
4136867	99	49	39,7	cyclictest	4164443	-21	fschecks_time	20:55:19	0
4136867	99	49	30,16	cyclictest	0	-21	swapper/0	23:25:36	0
4136868	99	48	42,4	cyclictest	4170328	-21	systemd	21:12:00	1
4136868	99	48	41,5	cyclictest	94562	-21	mailstats	23:25:46	1
4136868	99	48	39,6	cyclictest	59159	-21	processes	22:45:37	1
4136867	99	48	41,5	cyclictest	85084	-21	gltestperf	23:15:21	0
4136867	99	48	41,5	cyclictest	138425	-21	/usr/sbin/munin	00:15:40	0
4136867	99	48	40,6	cyclictest	41531	-21	grep	22:25:38	0
4136867	99	48	40,6	cyclictest	152498	-21	kworker/u4:13+events_unbound	00:37:41	0
4136867	99	48	39,6	cyclictest	56221	-21	kworker/u4:12+events_unbound	22:57:24	0
4136867	99	48	34,11	cyclictest	5759	-21	if_eth0	21:45:22	0
4136867	99	48	30,16	cyclictest	134281	-21	unixbench_multi	00:10:42	0
4136868	99	47	40,5	cyclictest	116796	-21	sed	23:50:40	1
4136868	99	47	39,5	cyclictest	68038	-21	mailstats	22:55:39	1
4136868	99	47	39,5	cyclictest	0	-21	swapper/1	20:55:01	1
4136868	99	47	38,7	cyclictest	4166502	-21	kworker/u4:15+events_unbound	21:37:08	1
4136868	99	47	38,7	cyclictest	4124291	-21	kworker/u4:3+events_unbound	20:21:54	1
4136868	99	47	36,8	cyclictest	0	-21	swapper/1	22:50:14	1
4136867	99	47	39,6	cyclictest	4186964	-21	mailstats	21:30:38	0
4136867	99	47	39,6	cyclictest	4186964	-21	mailstats	21:30:38	0
4136867	99	47	39,6	cyclictest	107315	-21	uname	23:40:23	0
4136867	99	47	39,5	cyclictest	80375	-21	diskmemload	23:10:17	0
4136867	99	47	37,7	cyclictest	515	-21	sendmail	21:39:59	0
4136867	99	47	36,9	cyclictest	4139034	-21	sendmail_mailqu	19:15:36	0
4136867	99	47	30,7	cyclictest	126636	-21	kworker/u4:1+events_unbound	00:02:37	0
4136868	99	46	40,4	cyclictest	0	-21	swapper/1	21:45:42	1
4136868	99	46	39,5	cyclictest	81160	-21	proc_pri	23:10:36	1
4136868	99	46	39,5	cyclictest	38299	-21	kworker/u4:20-rpciod	22:25:17	1
4136868	99	46	39,5	cyclictest	14238	-21	aten_r7power_vo	21:55:18	1
4136868	99	46	37,7	cyclictest	97998	-21	aten_r7power_po	23:30:17	1
4136868	99	46	35,8	cyclictest	0	-21	swapper/1	21:25:33	1
4136867	99	46	40,4	cyclictest	141925	-21	aten_r7power_vo	00:20:15	0
4136867	99	46	39,5	cyclictest	4178105	-21	/usr/sbin/munin	21:20:49	0
4136867	99	46	39,5	cyclictest	14488	-21	cut	21:55:21	0
4136867	99	46	38,5	cyclictest	4161418	-21	latency_hist	20:44:59	0
4136867	99	46	38,5	cyclictest	4117695	-21	kworker/u4:7+events_unbound	19:10:02	0
4136867	99	46	37,7	cyclictest	102655	-21	fschecks_count	23:35:20	0
4136867	99	46	37,6	cyclictest	4160093	-21	kworker/u4:11+events_unbound	20:46:59	0
4136867	99	46	37,6	cyclictest	0	-21	swapper/0	00:05:31	0
4136867	99	46	37,6	cyclictest	0	-21	swapper/0	00:05:31	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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