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 May 26, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
102445	99	104	98,4	cyclictest	116542	-21	kworker/u4:2+events_unbound	20:52:43	0
102445	99	104	98,4	cyclictest	116542	-21	kworker/u4:2+events_unbound	20:52:42	0
102445	99	102	95,5	cyclictest	228297	-21	kworker/u4:0+events_unbound	23:03:01	0
102445	99	100	93,5	cyclictest	294188	-21	kworker/u4:3+events_unbound	00:23:09	0
102445	99	100	93,5	cyclictest	241735	-21	kworker/u4:9+events_unbound	23:13:04	0
102445	99	98	89,6	cyclictest	197688	-21	kworker/u4:9+events_unbound	22:22:57	0
102446	99	89	43,33	cyclictest	164255	-21	apt-get	21:45:12	1
102445	99	86	77,7	cyclictest	113980	-21	kworker/u4:9+events_unbound	20:02:36	0
102445	99	86	58,21	cyclictest	0	-21	swapper/0	23:45:18	0
102445	99	77	70,5	cyclictest	130665	-21	kworker/u4:9+events_unbound	21:02:44	0
102445	99	77	69,6	cyclictest	116548	-21	kworker/u4:12+events_unbound	20:07:37	0
102445	99	77	46,23	cyclictest	53	-21	kswapd0	21:45:12	0
102445	99	76	70,5	cyclictest	157962	-21	kworker/u4:7+events_unbound	22:02:54	0
102445	99	76	69,5	cyclictest	116542	-21	kworker/u4:2+events_unbound	20:47:41	0
102446	99	74	38,33	cyclictest	0	-21	swapper/1	22:55:19	1
102446	99	72	61,8	cyclictest	266107	-21	fschecks_count	23:40:18	1
102446	99	72	39,31	cyclictest	235130	-21	grep	23:05:15	1
102445	99	71	63,6	cyclictest	113980	-21	kworker/u4:9+events_unbound	19:52:34	0
102446	99	70	33,5	cyclictest	258222	-21	grep	23:30:39	1
102446	99	70	33,34	cyclictest	0	-21	swapper/1	20:35:21	1
102446	99	70	33,34	cyclictest	0	-21	swapper/1	20:35:20	1
102446	99	69	38,28	cyclictest	117822	-21	systemd	20:07:37	1
102446	99	69	31,8	cyclictest	204057	-21	latency_hist	22:30:01	1
102445	99	69	62,6	cyclictest	101157	-21	kworker/u4:3+events_unbound	19:12:29	0
102446	99	68	6,17	cyclictest	204766	-21	irqstats	22:30:22	1
102446	99	68	36,6	cyclictest	178833	-21	switchtime	22:00:39	1
102446	99	68	32,6	cyclictest	0	-21	swapper/1	22:50:25	1
102446	99	68	30,7	cyclictest	0	-21	swapper/1	23:50:31	1
102446	99	67	59,5	cyclictest	211088	-21	kworker/u4:0+events_unbound	22:48:01	1
102446	99	67	59,5	cyclictest	211088	-21	kworker/u4:0+events_unbound	22:48:00	1
102446	99	67	31,7	cyclictest	214172	-21	timerwakeupswit	22:40:40	1
102446	99	66	32,6	cyclictest	0	-21	swapper/1	22:15:32	1
102446	99	66	3,21	cyclictest	37	-21	kcompactd0	23:02:13	1
102446	99	66	29,6	cyclictest	0	-21	swapper/1	23:45:31	1
102446	99	66	12,15	cyclictest	133271	-21	diskmemload	21:25:39	1
102446	99	65	57,5	cyclictest	116546	-21	kworker/u4:6+events_unbound	20:30:01	1
102446	99	65	34,27	cyclictest	0	-21	swapper/1	21:55:37	1
102446	99	65	33,5	cyclictest	0	-21	swapper/1	20:55:21	1
102446	99	65	31,4	cyclictest	168924	-21	acpi	21:50:10	1
102445	99	65	49,7	cyclictest	272320	-21	kworker/u4:4+events_unbound	23:59:01	0
102446	99	64	34,26	cyclictest	0	-21	swapper/1	21:40:19	1
102446	99	64	29,5	cyclictest	0	-21	swapper/1	20:05:00	1
102446	99	63	53,7	cyclictest	0	-21	swapper/1	23:35:21	1
102446	99	63	32,6	cyclictest	119685	-21	fschecks_time	20:15:24	1
102446	99	62	54,6	cyclictest	53	-21	kswapd0	23:20:02	1
102446	99	62	29,5	cyclictest	0	-21	swapper/1	21:00:21	1
102445	99	62	55,5	cyclictest	157961	-21	kworker/u4:6+events_unbound	21:55:04	0
102445	99	61	43,16	cyclictest	164257	-21	munin-run	21:45:01	0
102445	99	60	50,7	cyclictest	102441	-21	cyclictest	23:17:14	0
102445	99	60	49,8	cyclictest	190965	-21	ssh	22:15:11	0
102445	99	59	51,6	cyclictest	290332	-21	kworker/u4:1+events_unbound	00:13:10	0
102446	99	58	45,5	cyclictest	102375	-21	kworker/u4:2+events_unbound	19:37:33	1
102445	99	58	48,7	cyclictest	314085	-21	modprobe	00:35:00	0
102445	99	57	50,5	cyclictest	294188	-21	kworker/u4:3+events_unbound	00:16:59	0
102445	99	57	43,10	cyclictest	133271	-21	diskmemload	22:14:55	0
102445	99	57	3,45	cyclictest	139030	-21	rm	21:15:42	0
102445	99	56	49,5	cyclictest	219390	-21	kworker/u4:5+events_unbound	22:58:00	0
102445	99	56	48,6	cyclictest	147454	-21	/usr/sbin/munin	21:25:24	0
102445	99	56	46,7	cyclictest	224593	-21	sshd	22:53:01	0
102445	99	56	43,7	cyclictest	131961	-21	kworker/u4:10+events_unbound	21:31:00	0
102445	99	55	41,4	cyclictest	237275	-21	kworker/u4:5+events_unbound	23:20:04	0
102445	99	54	48,4	cyclictest	317319	-21	systemd	00:38:10	0
102445	99	54	46,6	cyclictest	237277	-21	kworker/u4:8+events_unbound	23:26:01	0
102445	99	54	41,6	cyclictest	106247	-21	kworker/u4:15+events_unbound	19:24:03	0
102445	99	54	32,20	cyclictest	210450	-21	ssh	22:36:29	0
102446	99	53	46,5	cyclictest	102375	-21	kworker/u4:2+events_unbound	19:50:01	1
102446	99	53	44,6	cyclictest	117817	-21	kworker/u4:13+events_unbound	20:12:38	1
102445	99	53	46,5	cyclictest	272320	-21	kworker/u4:4+events_unbound	00:03:59	0
102445	99	53	39,8	cyclictest	0	-21	swapper/0	22:43:19	0
102446	99	52	44,5	cyclictest	126821	-21	unixbench_singl	20:40:38	1
102445	99	52	44,5	cyclictest	15	1	ktimers/0	23:52:03	0
102446	99	51	44,5	cyclictest	131961	-21	kworker/u4:10+events_unbound	21:25:01	1
102446	99	51	41,7	cyclictest	298667	-21	kworker/u4:15+events_unbound	00:20:13	1
102445	99	51	41,7	cyclictest	103892	-21	aten2__	19:15:17	0
102446	99	50	40,7	cyclictest	113976	-21	kworker/u4:1+events_unbound	21:07:44	1
102446	99	50	28,13	cyclictest	133271	-21	diskmemload	23:55:09	1
102445	99	50	40,7	cyclictest	287792	-21	acpi	00:05:11	0
102446	99	49	43,4	cyclictest	105911	-21	sendmail_mailqu	19:20:54	1
102446	99	49	42,5	cyclictest	114369	-21	sed	19:55:16	1
102446	99	49	41,6	cyclictest	157962	-21	kworker/u4:7+events_unbound	21:37:49	1
102446	99	49	40,7	cyclictest	0	-21	swapper/1	22:05:11	1
102445	99	49	43,5	cyclictest	285832	-21	kworker/u4:13+events_unbound	00:25:03	0
102445	99	49	33,11	cyclictest	121772	-21	modprobe	20:24:59	0
102445	99	49	30,16	cyclictest	0	-21	swapper/0	21:35:41	0
102446	99	48	41,5	cyclictest	138698	-21	irqstats	21:15:26	1
102446	99	48	40,6	cyclictest	53	-21	kswapd0	00:30:01	1
102446	99	48	39,6	cyclictest	102374	-21	kworker/u4:1+events_unbound	19:17:29	1
102446	99	48	37,9	cyclictest	102441	-21	cyclictest	19:32:30	1
102446	99	48	36,8	cyclictest	0	-21	swapper/1	21:30:25	1
102445	99	48	42,4	cyclictest	102375	-21	kworker/u4:2+events_unbound	19:55:03	0
102445	99	48	40,5	cyclictest	125085	-21	gcc	20:35:28	0
102445	99	48	40,5	cyclictest	125085	-21	gcc	20:35:28	0
102445	99	47	9,30	cyclictest	102441	-21	cyclictest	19:10:00	0
102445	99	47	39,5	cyclictest	133274	-21	idleruntime-cro	21:10:01	0
102445	99	47	37,7	cyclictest	217815	-21	fschecks_time	22:45:20	0
102445	99	47	37,7	cyclictest	217815	-21	fschecks_time	22:45:20	0
102445	99	47	26,19	cyclictest	258159	-21	grep	23:30:38	0
102446	99	46	39,5	cyclictest	128915	-21	gcc	20:50:28	1
102446	99	46	39,5	cyclictest	128915	-21	gcc	20:50:28	1
102446	99	46	36,7	cyclictest	0	-21	swapper/1	22:35:21	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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