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 Sat Dec 06, 2025 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
371446	99	131	121,7	cyclictest	53	-21	kswapd0	12:35:53	0
371447	99	124	117,5	cyclictest	357367	-21	kworker/u4:8+events_unbound	07:15:37	1
371446	99	95	48,32	cyclictest	510784	-21	mailstats	11:40:39	0
371447	99	92	83,6	cyclictest	436957	-21	kworker/u4:15+events_unbound	10:25:32	1
371447	99	91	82,6	cyclictest	415291	-21	kworker/u4:6+events_unbound	09:30:19	1
371447	99	90	80,7	cyclictest	384377	-21	kworker/u4:4+events_unbound	08:00:46	1
371446	99	90	15,68	cyclictest	371395	-21	cron	07:10:00	0
371446	99	90	15,68	cyclictest	371395	-21	cron	07:10:00	0
371446	99	84	77,5	cyclictest	436956	-21	kworker/u4:14+events_unbound	10:11:14	0
371446	99	84	75,7	cyclictest	553330	-21	kworker/u4:4+events_unbound	12:31:32	0
371447	99	83	74,7	cyclictest	388336	-21	kworker/u4:11+events_unbound	08:25:57	1
371447	99	83	74,6	cyclictest	384375	-21	kworker/u4:2+events_unbound	08:05:45	1
371447	99	83	73,6	cyclictest	501252	-21	kworker/u4:7+events_unbound	11:30:02	1
371447	99	82	72,6	cyclictest	388338	-21	kworker/u4:13+events_unbound	08:35:12	1
371446	99	82	70,9	cyclictest	493588	-21	kworker/u4:9+events_unbound	11:31:27	0
371446	99	80	70,7	cyclictest	500741	-21	kworker/u4:4+events_unbound	11:36:27	0
371447	99	79	72,5	cyclictest	536548	-21	kworker/u4:6+events_unbound	12:20:53	1
371446	99	76	41,33	cyclictest	462923	-21	ssh	10:35:00	0
371446	99	75	65,7	cyclictest	504358	-21	kworker/u4:10+events_unbound	11:50:50	0
371447	99	74	45,27	cyclictest	410658	-21	/usr/sbin/munin	09:20:36	1
371446	99	74	65,7	cyclictest	482368	-21	kworker/u4:12+events_unbound	12:05:52	0
371447	99	73	41,29	cyclictest	0	-21	swapper/1	12:00:01	1
371446	99	73	68,3	cyclictest	444397	-21	kworker/u4:4+events_unbound	10:16:14	0
371446	99	73	65,6	cyclictest	408086	-21	kworker/u4:7+events_unbound	09:36:09	0
371446	99	73	39,31	cyclictest	394862	-21	latency_hist	08:40:02	0
371446	99	73	28,40	cyclictest	0	-21	swapper/0	08:10:11	0
371447	99	71	64,5	cyclictest	425793	-21	kworker/u4:12+events_unbound	09:45:21	1
371447	99	71	33,34	cyclictest	37	-21	kcompactd0	12:35:54	1
371447	99	70	62,6	cyclictest	468618	-21	kworker/u4:0+events_unbound	11:11:24	1
371447	99	70	61,6	cyclictest	504359	-21	kworker/u4:11+events_unbound	11:35:46	1
371447	99	70	61,6	cyclictest	472089	-21	kworker/u4:3+events_unbound	10:56:21	1
371447	99	70	59,8	cyclictest	384373	-21	kworker/u4:0+events_unbound	08:40:13	1
371447	99	70	45,22	cyclictest	540000	-21	unixbench_multi	12:15:39	1
371446	99	70	65,3	cyclictest	532197	-21	kworker/u4:13+events_unbound	12:10:53	0
371447	99	69	34,32	cyclictest	0	-21	swapper/1	10:35:36	1
371446	99	69	40,26	cyclictest	466924	-21	wget	10:40:19	0
371446	99	69	38,29	cyclictest	464255	-21	timerandwakeup	10:35:40	0
371447	99	68	58,7	cyclictest	432769	-21	kworker/u4:7+events_unbound	10:15:28	1
371447	99	68	36,29	cyclictest	0	-21	swapper/1	11:40:20	1
371447	99	67	60,5	cyclictest	379134	-21	kworker/u4:13+events_unbound	07:40:43	1
371447	99	67	59,6	cyclictest	432769	-21	kworker/u4:7+events_unbound	10:06:12	1
371446	99	67	58,6	cyclictest	373962	-21	kworker/u4:7+events_unbound	07:20:39	0
371446	99	67	38,27	cyclictest	485616	-21	head	11:05:41	0
371446	99	67	36,29	cyclictest	0	-21	swapper/0	11:20:29	0
371446	99	66	36,28	cyclictest	411011	-21	grep	09:20:39	0
371447	99	65	55,7	cyclictest	384373	-21	kworker/u4:0+events_unbound	08:15:50	1
371447	99	65	36,27	cyclictest	491741	-21	ssh	11:15:16	1
371446	99	65	34,28	cyclictest	543871	-21	ntp_offset	12:20:30	0
371446	99	65	27,36	cyclictest	53	-21	kswapd0	10:50:22	0
371446	99	65	1,14	cyclictest	444395	-21	ssh	10:07:35	0
371447	99	64	36,25	cyclictest	0	-21	swapper/1	11:20:33	1
371447	99	64	2,24	cyclictest	526738	-21	ssh	12:00:35	1
371447	99	64	1,25	cyclictest	424504	-21	ssh	09:40:26	1
371446	99	64	59,3	cyclictest	379133	-21	kworker/u4:11+events_unbound	07:45:00	0
371446	99	64	35,26	cyclictest	477240	-21	/usr/sbin/munin	10:55:21	0
371446	99	64	33,28	cyclictest	0	-21	swapper/0	09:30:35	0
371446	99	64	32,29	cyclictest	0	-21	swapper/0	07:30:40	0
371446	99	64	30,32	cyclictest	522258	-21	kernelversion	11:55:23	0
371447	99	63	56,5	cyclictest	408086	-21	kworker/u4:7+events_unbound	09:26:10	1
371447	99	63	35,25	cyclictest	0	-21	swapper/1	10:10:33	1
371447	99	63	34,27	cyclictest	552252	-21	kernelversion	12:30:25	1
371447	99	63	31,29	cyclictest	0	-21	swapper/1	09:15:21	1
371447	99	63	17,8	cyclictest	432026	-21	ssh	09:50:36	1
371446	99	63	54,6	cyclictest	472091	-21	kworker/u4:7+events_unbound	11:15:43	0
371446	99	63	33,27	cyclictest	436956	-21	kworker/u4:14-rpciod	10:00:32	0
371446	99	63	3,14	cyclictest	397584	-21	apt-get	08:50:16	0
371446	99	63	30,29	cyclictest	0	-21	swapper/0	09:40:27	0
371446	99	63	20,40	cyclictest	399945	-21	kworker/u4:14+xprtiod	09:15:13	0
371447	99	62	5,14	cyclictest	420968	-21	ssh	09:35:31	1
371447	99	62	26,33	cyclictest	0	-21	swapper/1	11:45:15	1
371447	99	62	2,28	cyclictest	474364	-21	ps	10:50:40	1
371447	99	62	2,21	cyclictest	372332	-21	ps	07:10:36	1
371447	99	62	17,13	cyclictest	453796	-21	sed	10:20:39	1
371446	99	62	57,3	cyclictest	377852	-21	kworker/u4:9+events_unbound	07:45:44	0
371446	99	62	53,6	cyclictest	482368	-21	kworker/u4:12+events_unbound	11:25:45	0
371446	99	62	31,29	cyclictest	403844	-21	proc_pri	09:10:37	0
371446	99	62	23,35	cyclictest	0	-21	swapper/0	11:50:01	0
371447	99	61	56,3	cyclictest	397376	-21	kworker/u4:7+events_unbound	08:55:13	1
371447	99	61	33,25	cyclictest	0	-21	swapper/1	08:50:25	1
371447	99	61	32,26	cyclictest	0	-21	swapper/1	11:25:39	1
371447	99	61	31,27	cyclictest	0	-21	swapper/1	12:05:33	1
371446	99	61	31,28	cyclictest	0	-21	swapper/0	09:45:25	0
371446	99	61	30,28	cyclictest	0	-21	swapper/0	09:55:35	0
371446	99	61	26,32	cyclictest	384869	-21	grep	08:00:20	0
371447	99	60	35,23	cyclictest	518962	-21	cat	11:50:39	1
371447	99	60	34,23	cyclictest	0	-21	swapper/1	10:00:25	1
371447	99	60	32,26	cyclictest	481847	-21	timerwakeupswit	11:00:42	1
371447	99	60	26,31	cyclictest	0	-21	swapper/1	09:10:18	1
371446	99	60	52,6	cyclictest	433228	-21	kworker/u4:10+events_unbound	10:21:15	0
371446	99	60	31,25	cyclictest	0	-21	swapper/0	12:00:36	0
371446	99	60	2,16	cyclictest	393036	-21	ntpq	08:30:32	0
371446	99	60	1,15	cyclictest	480718	-21	apt-get	11:00:14	0
371447	99	59	54,3	cyclictest	380525	-21	kworker/u4:14+events_unbound	07:55:46	1
371447	99	59	51,6	cyclictest	458169	-21	kworker/u4:12+events_unbound	10:31:18	1
371447	99	59	50,6	cyclictest	384373	-21	kworker/u4:0+events_unbound	08:20:52	1
371447	99	59	3,21	cyclictest	535224	-21	ssh	12:10:29	1
371447	99	59	30,26	cyclictest	482368	-21	kworker/u4:12-rpciod	11:05:17	1
371447	99	59	29,27	cyclictest	0	-21	swapper/1	07:20:19	1
371446	99	59	28,28	cyclictest	401786	-21	fschecks_count	09:05:20	0
371446	99	59	23,34	cyclictest	375281	-21	kworker/u4:10-rpciod	07:25:30	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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