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 Apr 29, 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
201336	99	90	82,6	cyclictest	214107	-21	kworker/u4:11+events_unbound	21:11:19	1
201335	99	84	77,5	cyclictest	243556	-21	kworker/u4:5+events_unbound	21:26:22	0
201336	99	81	73,6	cyclictest	394586	-21	kworker/u4:10+events_unbound	00:36:50	1
201335	99	76	67,7	cyclictest	275228	-21	kworker/u4:4+events_unbound	22:11:28	0
201335	99	76	67,6	cyclictest	402892	-21	kworker/u4:7+events_unbound	00:25:00	0
201335	99	70	61,7	cyclictest	239001	-21	kworker/u4:2+events_unbound	21:20:00	0
201335	99	69	62,5	cyclictest	372214	-21	kworker/u4:2+events_unbound	00:11:46	0
201335	99	68	61,5	cyclictest	336663	-21	kworker/u4:12+events_unbound	23:56:43	0
201336	99	67	61,4	cyclictest	203846	-21	kworker/u4:14+events_unbound	19:30:00	1
201335	99	67	59,6	cyclictest	327544	-21	kworker/u4:14+events_unbound	23:41:42	0
201335	99	66	54,8	cyclictest	266227	-21	kworker/u4:1+xprtiod	21:50:11	0
201336	99	65	48,5	cyclictest	363147	-21	kworker/u4:16+events_unbound	23:46:43	1
201335	99	65	57,6	cyclictest	270755	-21	kworker/u4:5+events_unbound	21:56:25	0
201335	99	65	56,6	cyclictest	292496	-21	kworker/u4:4+events_unbound	22:26:29	0
201336	99	64	57,5	cyclictest	288024	-21	kworker/u4:1+events_unbound	22:16:29	1
201336	99	64	56,6	cyclictest	301536	-21	kworker/u4:3+events_unbound	22:31:30	1
201336	99	64	54,8	cyclictest	318613	-21	systemd	22:46:32	1
201335	99	63	55,5	cyclictest	279692	-21	kworker/u4:9+events_unbound	22:05:00	0
201336	99	62	53,6	cyclictest	202563	-21	kworker/u4:10+events_unbound	20:36:15	1
201336	99	62	53,6	cyclictest	196419	-21	kworker/u4:1+events_unbound	20:26:15	1
201336	99	61	48,7	cyclictest	354763	-21	kworker/u4:2+events_unbound	23:35:20	1
201336	99	60	52,6	cyclictest	397081	-21	sshd	00:15:29	1
201335	99	60	53,5	cyclictest	402890	-21	kworker/u4:2+events_unbound	00:26:49	0
201335	99	60	31,24	cyclictest	353261	-21	mailstats	23:25:41	0
201336	99	59	50,7	cyclictest	232179	-21	kworker/u4:12+events_unbound	21:30:00	1
201336	99	58	50,6	cyclictest	372216	-21	kworker/u4:5+events_unbound	00:01:44	1
201336	99	58	48,8	cyclictest	390113	-21	kworker/u4:5+events_unbound	00:10:01	1
201336	99	58	48,8	cyclictest	390113	-21	kworker/u4:5+events_unbound	00:10:01	1
201336	99	57	51,4	cyclictest	252665	-21	kworker/u4:7+events_unbound	21:40:03	1
201335	99	56	50,4	cyclictest	358641	-21	kworker/u4:15+events_unbound	23:31:42	0
201336	99	55	47,6	cyclictest	203845	-21	kworker/u4:13+events_unbound	19:51:10	1
201336	99	55	47,6	cyclictest	196419	-21	kworker/u4:1+events_unbound	20:25:01	1
201335	99	55	48,5	cyclictest	402890	-21	kworker/u4:2+events_unbound	00:31:48	0
201335	99	55	48,5	cyclictest	223144	-21	kworker/u4:13+events_unbound	20:50:01	0
201335	99	55	47,5	cyclictest	201332	-21	cyclictest	22:46:09	0
201335	99	55	46,6	cyclictest	201332	-21	cyclictest	23:55:00	0
201336	99	54	29,20	cyclictest	53	-21	kswapd0	22:35:10	1
201335	99	54	35,5	cyclictest	221902	-21	apt	20:30:00	0
201336	99	53	43,8	cyclictest	210238	-21	systemd	19:41:06	1
201336	99	53	41,8	cyclictest	37	-21	kcompactd0	23:08:18	1
201335	99	53	46,5	cyclictest	298959	-21	latency_hist	22:25:01	0
201335	99	53	44,7	cyclictest	0	-21	swapper/0	22:05:13	0
201335	99	53	43,8	cyclictest	315	-21	systemd-journal	21:41:22	0
201336	99	52	44,6	cyclictest	214107	-21	kworker/u4:11+events_unbound	20:05:01	1
201335	99	52	42,8	cyclictest	53	-21	kswapd0	22:35:11	0
201335	99	52	38,12	cyclictest	229599	-21	systemd	20:56:17	0
201335	99	52	35,11	cyclictest	391686	-21	modprobe	00:10:00	0
201335	99	52	35,11	cyclictest	391686	-21	modprobe	00:10:00	0
201336	99	51	43,6	cyclictest	313357	-21	/usr/sbin/munin	22:40:39	1
201336	99	51	42,7	cyclictest	372214	-21	kworker/u4:2+events_unbound	23:55:00	1
201336	99	51	40,8	cyclictest	299010	-21	cat	22:25:02	1
201336	99	51	36,5	cyclictest	223144	-21	kworker/u4:13+events_unbound	21:17:00	1
201335	99	51	44,5	cyclictest	330421	-21	gltestperf	23:00:21	0
201335	99	51	43,6	cyclictest	219305	-21	kworker/u4:7+events_unbound	20:31:14	0
201335	99	51	33,15	cyclictest	224424	-21	cron	20:40:01	0
201335	99	51	32,13	cyclictest	17	1	rcu_preempt	21:40:01	0
201336	99	50	43,5	cyclictest	275228	-21	kworker/u4:4+events_unbound	22:06:27	1
201336	99	50	43,5	cyclictest	269014	-21	sshd	21:50:29	1
201336	99	50	41,7	cyclictest	227016	-21	munin-run	20:50:01	1
201336	99	50	40,8	cyclictest	214098	-21	systemd	19:56:09	1
201336	99	50	39,9	cyclictest	263999	-21	/usr/sbin/munin	21:45:15	1
201335	99	50	41,6	cyclictest	0	-21	swapper/0	21:10:37	0
201335	99	50	32,4	cyclictest	0	-21	swapper/0	21:30:31	0
201336	99	49	42,5	cyclictest	401960	-21	timerandwakeup	00:20:39	1
201336	99	49	42,5	cyclictest	331111	-21	unixbench-2d	23:00:39	1
201336	99	49	40,7	cyclictest	207671	-21	systemd	19:31:04	1
201336	99	49	38,9	cyclictest	277193	-21	aten2__	22:00:16	1
201335	99	49	41,6	cyclictest	230608	-21	cat	21:00:37	0
201335	99	49	40,7	cyclictest	301536	-21	kworker/u4:3+events_unbound	22:40:02	0
201335	99	49	38,8	cyclictest	219716	-21	df	20:20:17	0
201336	99	48	41,4	cyclictest	286902	-21	/usr/sbin/munin	22:10:37	1
201336	99	48	40,6	cyclictest	299594	-21	fschecks_count	22:25:24	1
201336	99	48	40,6	cyclictest	229272	-21	sendmail_mailqu	20:55:37	1
201336	99	48	40,5	cyclictest	0	-21	swapper/1	23:20:31	1
201336	99	48	39,7	cyclictest	343636	-21	fschecks_time	23:15:20	1
201336	99	48	39,6	cyclictest	352419	-21	cpu	23:25:19	1
201335	99	48	41,5	cyclictest	363081	-21	sshd	23:36:42	0
201335	99	48	41,5	cyclictest	266227	-21	kworker/u4:1+events_unbound	21:48:00	0
201335	99	48	41,5	cyclictest	210734	-21	uniq	19:45:18	0
201335	99	48	40,6	cyclictest	336662	-21	kworker/u4:11+events_unbound	23:07:47	0
201335	99	48	40,6	cyclictest	242138	-21	netstat	21:20:23	0
201335	99	48	40,6	cyclictest	242138	-21	netstat	21:20:23	0
201335	99	48	35,8	cyclictest	206426	-21	modprobe	19:30:00	0
201335	99	48	34,11	cyclictest	326355	-21	open_inodes	22:55:37	0
201336	99	47	39,5	cyclictest	402891	-21	kworker/u4:3+events_unbound	00:30:01	1
201336	99	47	27,12	cyclictest	0	-21	swapper/1	23:30:33	1
201335	99	47	39,6	cyclictest	304308	-21	ssh	22:30:26	0
201335	99	47	39,6	cyclictest	223146	-21	kworker/u4:17+events_unbound	20:51:18	0
201335	99	47	38,6	cyclictest	203883	-21	munin-plugin-st	19:20:00	0
201335	99	47	37,8	cyclictest	291358	-21	wc	22:15:42	0
201335	99	47	28,17	cyclictest	378	-21	dbus-daemon	00:36:49	0
201336	99	46	40,4	cyclictest	326419	-21	sendmail_mailqu	22:55:38	1
201336	99	46	39,5	cyclictest	338941	-21	aten_r7power_cu	23:10:18	1
201335	99	46	38,6	cyclictest	383801	-21	kernelversion	00:00:23	0
201335	99	46	37,6	cyclictest	370497	-21	gltestperf	23:45:21	0
201336	99	45	39,4	cyclictest	369699	-21	munin-plugin-st	23:45:00	1
201336	99	45	37,6	cyclictest	0	-21	swapper/1	20:50:28	1
201336	99	45	35,8	cyclictest	379426	-21	kernelversion	23:55:22	1
201335	99	45	38,5	cyclictest	347488	-21	sendmail-msp	23:20:01	0
201335	99	45	37,6	cyclictest	202264	-21	cat	19:10:37	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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