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 100 highest latencies:

System rack7slot2.osadl.org (updated Sat May 24, 2025 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
198916	99	98	90,5	cyclictest	206533	-21	kworker/u4:0+events_unbound	20:07:03	1
198915	99	91	83,5	cyclictest	347113	-21	kworker/u4:11+events_unbound	23:37:45	0
198916	99	90	82,6	cyclictest	201430	-21	kworker/u4:14+events_unbound	19:45:00	1
198915	99	88	81,5	cyclictest	19	1	rcuc/0	20:07:03	0
198915	99	81	72,7	cyclictest	215478	-21	kworker/u4:3+events_unbound	21:27:16	0
198915	99	80	71,6	cyclictest	223167	-21	kworker/u4:5+events_unbound	20:45:01	0
198915	99	77	49,23	cyclictest	198914	-21	cyclictest	21:59:42	0
198915	99	76	64,9	cyclictest	360163	-21	apt-get	23:55:16	0
198915	99	76	42,31	cyclictest	52	-21	kswapd0	00:05:17	0
198916	99	75	41,32	cyclictest	322338	-21	timerwakeupswit	23:05:41	1
198915	99	74	66,6	cyclictest	372722	-21	kworker/u4:7+events_unbound	00:35:01	0
198916	99	73	68,3	cyclictest	206538	-21	kworker/u4:8+events_unbound	19:47:01	1
198915	99	73	68,3	cyclictest	311705	-21	kworker/u4:2+events_unbound	23:02:37	0
198915	99	73	36,34	cyclictest	199310	-21	fschecks_count	19:10:21	0
198915	99	72	39,30	cyclictest	198914	-21	cyclictest	23:35:01	0
198915	99	71	34,34	cyclictest	352793	-21	df_abs	23:45:20	0
198916	99	70	40,27	cyclictest	0	-21	swapper/1	22:05:23	1
198916	99	70	34,7	cyclictest	233817	-21	latency_hist	21:15:01	1
198915	99	70	62,5	cyclictest	206534	-21	kworker/u4:1+events_unbound	20:15:01	0
198915	99	70	35,32	cyclictest	294480	-21	kernelversion	22:30:24	0
198915	99	69	33,34	cyclictest	306121	-21	gltestperf	22:45:27	0
198916	99	68	34,7	cyclictest	311703	-21	kworker/u4:0-rpciod	23:00:29	1
198915	99	68	57,8	cyclictest	52	-21	kswapd0	22:15:22	0
198915	99	68	31,35	cyclictest	209665	-21	gltestperf	19:50:21	0
198915	99	67	60,4	cyclictest	201430	-21	kworker/u4:14+events_unbound	19:36:59	0
198915	99	67	33,31	cyclictest	211720	-21	latency_hist	20:00:01	0
198915	99	67	33,30	cyclictest	0	-21	swapper/0	23:50:24	0
198915	99	67	31,4	cyclictest	0	-21	swapper/0	00:25:17	0
198915	99	67	30,6	cyclictest	218056	-21	kworker/u4:17-rpciod	20:35:38	0
198915	99	67	28,36	cyclictest	0	-21	swapper/0	20:50:01	0
198915	99	66	36,27	cyclictest	332759	-21	munin-run	23:20:02	0
198915	99	66	34,29	cyclictest	246769	-21	ld	21:30:34	0
198915	99	66	32,6	cyclictest	290099	-21	sh	22:25:21	0
198915	99	66	30,4	cyclictest	0	-21	swapper/0	21:50:28	0
198915	99	66	29,5	cyclictest	302231	-21	gltestperf	22:40:22	0
198916	99	65	57,6	cyclictest	215478	-21	kworker/u4:3+events_unbound	21:37:20	1
198915	99	65	3,18	cyclictest	238767	-21	ssh	21:20:34	0
198915	99	65	3,18	cyclictest	238767	-21	ssh	21:20:34	0
198915	99	65	31,4	cyclictest	234259	-21	/usr/sbin/munin	21:15:21	0
198915	99	65	29,5	cyclictest	0	-21	swapper/0	23:40:24	0
198915	99	65	28,4	cyclictest	0	-21	swapper/0	22:00:31	0
198915	99	65	27,6	cyclictest	0	-21	swapper/0	23:05:32	0
198915	99	65	20,16	cyclictest	0	-21	swapper/0	00:05:00	0
198916	99	64	57,5	cyclictest	200146	-21	kworker/u4:7+events_unbound	19:35:00	1
198916	99	64	32,4	cyclictest	215478	-21	kworker/u4:3-rpciod	20:20:01	1
198915	99	64	35,27	cyclictest	325597	-21	grep	23:10:24	0
198915	99	64	30,5	cyclictest	0	-21	swapper/0	23:25:37	0
198915	99	64	27,6	cyclictest	0	-21	swapper/0	22:55:45	0
198915	99	64	26,8	cyclictest	0	-21	swapper/0	22:05:19	0
198916	99	63	56,5	cyclictest	307816	-21	kworker/u4:17+events_unbound	23:25:01	1
198916	99	63	52,8	cyclictest	347113	-21	kworker/u4:11+events_unbound	00:10:17	1
198915	99	63	30,30	cyclictest	206536	-21	kworker/u4:5-rpciod	19:40:26	0
198915	99	63	29,6	cyclictest	0	-21	swapper/0	22:35:41	0
198915	99	63	28,6	cyclictest	0	-21	swapper/0	00:10:44	0
198915	99	63	27,9	cyclictest	0	-21	swapper/0	22:15:01	0
198915	99	62	29,8	cyclictest	309690	-21	grep	22:50:23	0
198915	99	62	29,5	cyclictest	0	-21	swapper/0	21:10:32	0
198915	99	62	23,13	cyclictest	215478	-21	kworker/u4:3-nfsiod	20:55:01	0
198916	99	61	53,6	cyclictest	276351	-21	kworker/u4:10+events_unbound	22:15:22	1
198915	99	61	29,4	cyclictest	0	-21	swapper/0	19:25:39	0
198916	99	60	53,5	cyclictest	369289	-21	kworker/u4:2+events_unbound	00:08:54	1
198916	99	60	47,10	cyclictest	325915	-21	grep	23:10:33	1
198916	99	59	49,8	cyclictest	388431	-21	systemd	00:39:06	1
198916	99	59	47,9	cyclictest	223157	-21	systemd	20:42:10	1
198915	99	59	25,7	cyclictest	0	-21	swapper/0	00:39:54	0
198915	99	59	24,6	cyclictest	0	-21	swapper/0	22:20:46	0
198915	99	59	24,5	cyclictest	0	-21	swapper/0	21:05:24	0
198916	99	58	49,7	cyclictest	304036	-21	systemd	22:42:32	1
198916	99	58	49,6	cyclictest	383466	-21	df_abs	00:30:25	1
198916	99	57	49,6	cyclictest	221859	-21	kworker/u4:11+events_unbound	21:42:20	1
198916	99	57	49,5	cyclictest	52	-21	kswapd0	22:20:19	1
198916	99	57	44,9	cyclictest	227076	-21	modprobe	21:00:00	1
198916	99	56	46,7	cyclictest	343313	-21	kworker/u4:1+events_unbound	23:32:44	1
198916	99	56	44,8	cyclictest	37	-21	kcompactd0	22:04:55	1
198916	99	55	46,7	cyclictest	200147	-21	kworker/u4:8+events_unbound	19:26:56	1
198916	99	55	46,6	cyclictest	335194	-21	kworker/u4:4+events_unbound	23:42:46	1
198915	99	55	46,7	cyclictest	256271	-21	systemd	21:42:20	0
198916	99	54	44,7	cyclictest	339307	-21	kworker/u4:6+events_unbound	23:27:42	1
198916	99	53	44,6	cyclictest	0	-21	swapper/1	00:20:32	1
198916	99	53	34,13	cyclictest	52	-21	kswapd0	22:45:08	1
198915	99	53	41,9	cyclictest	333741	-21	ld	23:20:28	0
198915	99	52	3,10	cyclictest	0	-21	swapper/0	19:10:00	0
198916	99	51	45,4	cyclictest	234871	-21	/usr/sbin/munin	21:15:39	1
198916	99	51	44,5	cyclictest	364434	-21	irqstats	00:00:23	1
198916	99	51	41,7	cyclictest	0	-21	swapper/1	23:45:29	1
198916	99	51	40,9	cyclictest	298222	-21	fschecks_count	22:35:24	1
198915	99	51	44,5	cyclictest	218055	-21	kworker/u4:16+events_unbound	20:25:00	0
198915	99	51	43,6	cyclictest	204604	-21	gltestperf	19:30:17	0
198916	99	50	42,6	cyclictest	224470	-21	munin-run	20:50:00	1
198916	99	50	42,6	cyclictest	223166	-21	kworker/u4:4+events_unbound	21:25:00	1
198916	99	50	42,6	cyclictest	223166	-21	kworker/u4:4+events_unbound	21:25:00	1
198916	99	50	41,7	cyclictest	52	-21	kswapd0	00:15:09	1
198916	99	50	39,9	cyclictest	348415	-21	idleruntime-cro	23:40:00	1
198916	99	49	41,6	cyclictest	215478	-21	kworker/u4:3+events_unbound	21:07:13	1
198916	99	49	41,5	cyclictest	278423	-21	gltestperf	22:10:24	1
198915	99	49	39,7	cyclictest	228484	-21	latency_hist	21:05:06	0
198915	99	49	35,11	cyclictest	377627	-21	fschecks_count	00:20:21	0
198916	99	48	41,5	cyclictest	297598	-21	cron	22:35:00	1
198916	99	48	38,7	cyclictest	313549	-21	df_abs	22:55:23	1
198915	99	48	39,6	cyclictest	215478	-21	kworker/u4:3+events_unbound	21:47:22	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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