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 Wed Feb 18, 2026 00:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4165169	99	115	80,32	cyclictest	54	-21	kswapd0	21:40:09	0
4165169	99	97	88,6	cyclictest	55467	-21	kworker/u4:6+events_unbound	22:36:50	0
4165169	99	86	4,64	cyclictest	4165144	-21	munin-run	19:10:00	0
4165169	99	84	65,7	cyclictest	97785	-21	kworker/u4:2+events_unbound	23:06:55	0
4165169	99	79	69,7	cyclictest	97785	-21	kworker/u4:2+events_unbound	23:32:00	0
4165171	99	78	69,7	cyclictest	4161503	-21	kworker/u4:3+events_unbound	20:36:29	1
4165169	99	77	70,5	cyclictest	437	-21	kworker/u4:10+events_unbound	21:11:35	0
4165169	99	77	66,8	cyclictest	54	-21	kswapd0	23:45:14	0
4165171	99	76	31,42	cyclictest	0	-21	swapper/1	23:30:27	1
4165169	99	76	68,5	cyclictest	13082	-21	kworker/u4:7+events_unbound	21:31:40	0
4165169	99	75	65,7	cyclictest	156949	-21	kworker/u4:8+events_unbound	00:12:07	0
4165171	99	70	64,4	cyclictest	4172776	-21	kworker/u4:9+events_unbound	20:51:31	1
4165169	99	70	62,6	cyclictest	17435	-21	kworker/u4:4+events_unbound	21:36:41	0
4165171	99	69	53,9	cyclictest	0	-21	swapper/1	21:40:12	1
4165171	99	69	38,29	cyclictest	15101	-21	aten_r7power_po	21:25:16	1
4165171	99	69	38,29	cyclictest	15101	-21	aten_r7power_po	21:25:16	1
4165171	99	68	34,29	cyclictest	0	-21	swapper/1	00:08:51	1
4165169	99	68	60,6	cyclictest	4189384	-21	kworker/u4:5+events_unbound	20:46:32	0
4165169	99	68	56,7	cyclictest	138575	-21	ld	23:50:32	0
4165171	99	67	35,30	cyclictest	173102	-21	unixbench_multi	00:30:54	1
4165169	99	67	59,6	cyclictest	97785	-21	kworker/u4:2+events_unbound	23:42:01	0
4165171	99	66	36,28	cyclictest	143176	-21	sendmail_mailqu	23:55:56	1
4165171	99	66	35,29	cyclictest	4166481	-21	latency_hist	19:15:02	1
4165171	99	65	36,27	cyclictest	40651	-21	fschecks_count	21:55:18	1
4165169	99	65	1,59	cyclictest	0	-21	swapper/0	21:15:28	0
4165171	99	64	5,22	cyclictest	49653	-21	ssh	22:05:33	1
4165171	99	64	35,27	cyclictest	6215	-21	latency_hist	21:15:01	1
4165171	99	64	3,19	cyclictest	37051	-21	ps	21:50:36	1
4165169	99	64	56,6	cyclictest	80617	-21	kworker/u4:3+events_unbound	22:45:00	0
4165169	99	64	56,6	cyclictest	4162696	-21	kworker/u4:11+events_unbound	20:01:23	0
4165169	99	64	44,5	cyclictest	13083	-21	kworker/u4:10+events_unbound	21:25:00	0
4165171	99	63	4,19	cyclictest	159693	-21	ssh	00:15:25	1
4165171	99	63	36,25	cyclictest	78753	-21	fschecks_count	22:40:19	1
4165171	99	63	34,27	cyclictest	96311	-21	mailstats	23:00:37	1
4165171	99	63	33,28	cyclictest	110055	-21	kworker/u4:6-rpciod	23:20:29	1
4165171	99	63	32,29	cyclictest	0	-21	swapper/1	22:10:39	1
4165171	99	63	3,17	cyclictest	74963	-21	ssh	22:35:32	1
4165171	99	63	30,30	cyclictest	0	-21	swapper/1	20:10:01	1
4165171	99	63	29,31	cyclictest	0	-21	swapper/1	22:20:28	1
4165171	99	63	25,34	cyclictest	95158	-21	latency_hist	23:00:01	1
4165171	99	63	24,37	cyclictest	0	-21	swapper/1	00:25:34	1
4165169	99	63	55,6	cyclictest	4160222	-21	kworker/u4:6+events_unbound	19:26:18	0
4165171	99	62	4,10	cyclictest	176691	-21	ntpq	00:35:29	1
4165171	99	62	35,24	cyclictest	0	-21	swapper/1	20:15:36	1
4165171	99	62	28,31	cyclictest	0	-21	swapper/1	21:45:16	1
4165171	99	62	16,43	cyclictest	0	-21	swapper/1	23:10:39	1
4165171	99	62	1,16	cyclictest	4173609	-21	ntpq	19:40:30	1
4165171	99	62	1,13	cyclictest	125832	-21	ntpq	23:35:34	1
4165171	99	61	34,25	cyclictest	0	-21	swapper/1	23:10:01	1
4165171	99	61	30,28	cyclictest	0	-21	swapper/1	23:40:17	1
4165171	99	61	29,30	cyclictest	0	-21	swapper/1	22:25:20	1
4165171	99	61	28,31	cyclictest	88857	-21	sshd	22:51:52	1
4165169	99	61	51,8	cyclictest	45165	-21	/usr/sbin/munin	22:00:21	0
4165169	99	61	49,8	cyclictest	57547	-21	fschecks_count	22:15:21	0
4165169	99	61	1,52	cyclictest	4175339	-21	apt-get	19:50:07	0
4165171	99	60	38,20	cyclictest	19589	-21	grep	21:30:21	1
4165171	99	60	29,29	cyclictest	70968	-21	switchtime	22:30:38	1
4165171	99	60	29,28	cyclictest	0	-21	swapper/1	21:35:26	1
4165171	99	60	18,39	cyclictest	108340	-21	cut	23:15:18	1
4165171	99	59	4,11	cyclictest	138530	-21	ssh	23:50:31	1
4165171	99	59	29,26	cyclictest	0	-21	swapper/1	20:10:38	1
4165171	99	59	27,29	cyclictest	0	-21	swapper/1	19:30:39	1
4165171	99	59	27,29	cyclictest	0	-21	swapper/1	00:20:24	1
4165171	99	59	26,30	cyclictest	57361	-21	aten_r7power_po	22:15:17	1
4165169	99	59	54,4	cyclictest	19	1	rcuc/0	20:51:31	0
4165171	99	58	30,25	cyclictest	0	-21	swapper/1	22:00:33	1
4165171	99	58	29,27	cyclictest	0	-21	swapper/1	00:10:19	1
4165171	99	58	27,28	cyclictest	0	-21	swapper/1	00:00:24	1
4165171	99	58	25,30	cyclictest	0	-21	swapper/1	20:00:30	1
4165171	99	58	24,31	cyclictest	0	-21	swapper/1	21:15:17	1
4165171	99	58	1,17	cyclictest	134327	-21	ssh	23:45:38	1
4165169	99	58	49,6	cyclictest	152627	-21	kworker/u4:2+events_unbound	00:07:06	0
4165169	99	58	43,12	cyclictest	0	-21	swapper/0	20:35:07	0
4165171	99	57	33,21	cyclictest	116629	-21	aten_r7power_cu	23:25:16	1
4165171	99	57	3,13	cyclictest	4168303	-21	/usr/sbin/munin	19:20:20	1
4165171	99	57	28,26	cyclictest	0	-21	swapper/1	21:20:28	1
4165171	99	57	24,30	cyclictest	0	-21	swapper/1	20:25:35	1
4165171	99	57	20,32	cyclictest	0	-21	swapper/1	20:25:02	1
4165169	99	57	49,6	cyclictest	4162695	-21	kworker/u4:10+events_unbound	20:11:25	0
4165169	99	57	36,15	cyclictest	4170210	-21	apt-get	19:30:05	0
4165169	99	57	36,15	cyclictest	168196	-21	sh	00:25:27	0
4165171	99	56	26,28	cyclictest	0	-21	swapper/1	19:50:27	1
4165171	99	56	18,6	cyclictest	4177936	-21	cron	20:00:00	1
4165171	99	56	15,13	cyclictest	4161501	-21	kworker/u4:0-rpciod	19:15:16	1
4165169	99	56	48,6	cyclictest	161276	-21	kworker/u4:12+events_unbound	00:22:09	0
4165169	99	56	41,10	cyclictest	145979	-21	modprobe	23:59:59	0
4165171	99	55	27,25	cyclictest	0	-21	swapper/1	19:35:22	1
4165171	99	55	24,28	cyclictest	0	-21	swapper/1	19:30:01	1
4165169	99	55	48,5	cyclictest	4162694	-21	kworker/u4:7+events_unbound	19:16:16	0
4165169	99	55	47,6	cyclictest	136009	-21	kworker/u4:5+events_unbound	00:05:00	0
4165169	99	55	45,7	cyclictest	36952	-21	ld	21:50:33	0
4165171	99	54	25,26	cyclictest	0	-21	swapper/1	21:00:20	1
4165171	99	54	17,34	cyclictest	0	-21	swapper/1	20:30:13	1
4165169	99	54	47,5	cyclictest	156947	-21	kworker/u4:6+events_unbound	00:15:20	0
4165169	99	54	47,5	cyclictest	114410	-21	kworker/u4:9+events_unbound	23:26:58	0
4165171	99	53	28,23	cyclictest	0	-21	swapper/1	19:50:00	1
4165171	99	53	22,28	cyclictest	0	-21	swapper/1	22:45:31	1
4165169	99	53	45,5	cyclictest	165589	-21	kworker/u4:4+events_unbound	00:37:12	0
4165169	99	53	44,7	cyclictest	4173238	-21	fschecks_count	19:40:19	0
4165171	99	52	23,26	cyclictest	0	-21	swapper/1	20:45:23	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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