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 Mon Sep 07, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3093870	99	120	106,6	cyclictest	3115634	-21	kworker/u4:8+events_unbound	08:45:42	1
3093870	99	119	98,7	cyclictest	3176601	-21	kworker/u4:4+events_unbound	10:31:00	1
3093869	99	118	100,14	cyclictest	3242200	-21	kworker/u4:6+events_unbound	11:41:09	0
3093870	99	103	95,6	cyclictest	3211939	-21	kworker/u4:10+events_unbound	10:51:03	1
3093870	99	98	90,6	cyclictest	3198373	-21	kworker/u4:1+events_unbound	11:11:06	1
3093870	99	96	88,6	cyclictest	3198374	-21	kworker/u4:3+events_unbound	11:16:06	1
3093870	99	95	87,6	cyclictest	3211939	-21	kworker/u4:10+events_unbound	10:56:03	1
3093870	99	95	86,6	cyclictest	0	-21	swapper/1	09:35:17	1
3093870	99	94	87,5	cyclictest	3081187	-21	kworker/u4:0+events_unbound	07:15:12	1
3093869	99	91	47,40	cyclictest	53	-21	kswapd0	11:20:07	0
3093870	99	89	81,6	cyclictest	3198373	-21	kworker/u4:1+events_unbound	11:26:09	1
3093870	99	88	79,6	cyclictest	3088955	-21	kworker/u4:1+events_unbound	08:15:32	1
3093870	99	87	79,6	cyclictest	3114364	-21	kworker/u4:7+events_unbound	09:50:55	1
3093870	99	87	77,7	cyclictest	3100222	-21	kworker/u4:8+events_unbound	07:40:14	1
3093870	99	85	78,5	cyclictest	3282764	-21	kworker/u4:0+events_unbound	12:36:12	1
3093870	99	85	76,5	cyclictest	3096382	-21	kworker/u4:13+events_unbound	07:20:13	1
3093869	99	79	40,34	cyclictest	3142628	-21	cron	09:30:01	0
3093869	99	78	44,31	cyclictest	3093867	-21	cyclictest	10:06:58	0
3093869	99	77	54,15	cyclictest	3142985	-21	apt-get	09:30:13	0
3093870	99	76	68,6	cyclictest	3216444	-21	kworker/u4:8+events_unbound	11:06:06	1
3093870	99	76	68,6	cyclictest	3216444	-21	kworker/u4:8+events_unbound	11:06:06	1
3093870	99	76	68,6	cyclictest	3106597	-21	kworker/u4:11+events_unbound	08:55:45	1
3093870	99	75	60,8	cyclictest	3115634	-21	kworker/u4:8+events_unbound	09:45:55	1
3093869	99	74	4,26	cyclictest	3098433	-21	ntpq	07:25:24	0
3093869	99	71	42,27	cyclictest	3209848	-21	gltestperf	10:45:20	0
3093870	99	70	62,6	cyclictest	3093805	-21	kworker/u4:11+events_unbound	07:30:13	1
3093870	99	69	55,6	cyclictest	3096384	-21	kworker/u4:16+events_unbound	07:55:00	1
3093869	99	69	65,2	cyclictest	3233857	-21	kworker/u4:2+events_unbound	11:36:09	0
3093869	99	69	10,16	cyclictest	3204704	-21	cut	10:40:02	0
3093870	99	68	61,5	cyclictest	3278255	-21	kworker/u4:10+events_unbound	12:06:12	1
3093869	99	68	58,7	cyclictest	3242857	-21	kworker/u4:8+events_unbound	11:51:10	0
3093870	99	67	54,6	cyclictest	3096382	-21	kworker/u4:13+events_unbound	07:50:01	1
3093870	99	67	53,6	cyclictest	3114364	-21	kworker/u4:7+events_unbound	09:00:47	1
3093869	99	67	34,5	cyclictest	3169822	-21	df_abs	10:00:18	0
3093869	99	66	34,23	cyclictest	256	50	irq/23-42890000.ethernet	08:00:20	0
3093869	99	64	48,11	cyclictest	0	-21	swapper/0	10:40:31	0
3093869	99	64	44,16	cyclictest	0	-21	swapper/0	11:05:39	0
3093869	99	64	44,16	cyclictest	0	-21	swapper/0	11:05:38	0
3093870	99	63	55,6	cyclictest	3136604	-21	kworker/u4:1+events_unbound	09:34:46	1
3093870	99	63	50,7	cyclictest	0	-21	swapper/1	10:45:00	1
3093869	99	62	40,19	cyclictest	3231646	-21	aten2__	11:10:17	0
3093869	99	61	43,15	cyclictest	3307189	-21	sshd	12:35:16	0
3093869	99	60	4,20	cyclictest	3223554	-21	ntp_states	11:00:32	0
3093870	99	59	52,5	cyclictest	3249894	-21	/usr/sbin/munin	11:30:22	1
3093870	99	58	50,6	cyclictest	3209917	-21	if_eth0	10:45:20	1
3093869	99	58	48,7	cyclictest	3278255	-21	kworker/u4:10+events_unbound	12:26:13	0
3093869	99	58	48,7	cyclictest	3278255	-21	kworker/u4:10+events_unbound	12:26:12	0
3093869	99	58	48,7	cyclictest	0	-21	swapper/0	10:15:36	0
3093870	99	57	45,8	cyclictest	3142637	-21	modprobe	09:30:00	1
3093870	99	56	48,6	cyclictest	3211939	-21	kworker/u4:10+events_unbound	11:02:46	1
3093870	99	56	41,10	cyclictest	3192018	-21	fschecks_count	10:25:21	1
3093870	99	56	41,10	cyclictest	3192018	-21	fschecks_count	10:25:20	1
3093870	99	55	48,5	cyclictest	3269198	-21	kworker/u4:1+events_unbound	12:15:01	1
3093870	99	55	48,5	cyclictest	3211939	-21	kworker/u4:10+events_unbound	11:21:07	1
3093870	99	55	45,8	cyclictest	378	-21	dbus-daemon	07:55:24	1
3093870	99	55	36,5	cyclictest	3163062	-21	kworker/u4:2+events_unbound	10:05:20	1
3093869	99	55	47,6	cyclictest	3124582	-21	kworker/u4:1+events_unbound	09:15:02	0
3093869	99	55	46,7	cyclictest	3117589	-21	/usr/sbin/munin	08:40:27	0
3093869	99	55	36,16	cyclictest	3188561	-21	tail	10:20:39	0
3093870	99	54	48,4	cyclictest	3085306	-21	kworker/u4:15+events_unbound	07:10:01	1
3093870	99	54	46,5	cyclictest	3112829	-21	switchtime	08:20:39	1
3093869	99	54	47,5	cyclictest	3289525	-21	fschecks_count	12:15:20	0
3093869	99	54	46,6	cyclictest	3288886	-21	modprobe	12:15:00	0
3093869	99	54	46,5	cyclictest	0	-21	swapper/0	09:50:28	0
3093869	99	54	37,14	cyclictest	3218462	-21	aten_r7power_vo	10:55:21	0
3093869	99	54	35,17	cyclictest	3152157	-21	fschecks_time	09:40:20	0
3093870	99	53	48,4	cyclictest	3116904	-21	kworker/u4:15+events_unbound	08:40:01	1
3093869	99	53	45,6	cyclictest	3126748	-21	kworker/u4:4+events_unbound	09:20:48	0
3093870	99	52	41,8	cyclictest	37	-21	kcompactd0	10:12:13	1
3093869	99	52	45,5	cyclictest	3294813	-21	/usr/sbin/munin	12:20:39	0
3093869	99	52	45,5	cyclictest	3176601	-21	kworker/u4:4+events_unbound	10:26:02	0
3093869	99	52	45,5	cyclictest	3176601	-21	kworker/u4:4+events_unbound	10:26:01	0
3093870	99	51	46,4	cyclictest	3282764	-21	kworker/u4:0+events_unbound	12:19:46	1
3093870	99	51	44,5	cyclictest	3276318	-21	gltestperf	12:00:20	1
3093870	99	51	44,5	cyclictest	3188554	-21	unixbench_multi	10:20:39	1
3093869	99	51	43,5	cyclictest	3302767	-21	/usr/sbin/munin	12:30:17	0
3093869	99	51	36,8	cyclictest	3163061	-21	kworker/u4:1-rpciod	09:57:13	0
3093869	99	50	43,5	cyclictest	3115635	-21	kworker/u4:14+events_unbound	08:35:40	0
3093869	99	50	42,5	cyclictest	3119423	-21	unixbench_singl	08:45:38	0
3093869	99	50	38,8	cyclictest	3242857	-21	kworker/u4:8-rpciod	11:55:33	0
3093870	99	49	41,6	cyclictest	3302477	-21	apt-get	12:30:12	1
3093870	99	49	41,6	cyclictest	3255648	-21	kworker/u4:13+events_unbound	11:45:14	1
3093870	99	49	41,6	cyclictest	3255648	-21	kworker/u4:13+events_unbound	11:45:14	1
3093870	99	49	40,7	cyclictest	3272345	-21	/usr/sbin/munin	11:55:36	1
3093869	99	49	42,5	cyclictest	3109251	-21	kworker/u4:6+events_unbound	08:10:01	0
3093870	99	48	36,8	cyclictest	0	-21	swapper/1	10:15:35	1
3093869	99	48	40,5	cyclictest	3113633	-21	fschecks_time	08:25:21	0
3093869	99	48	39,7	cyclictest	3130432	-21	sendmail_mailqu	09:15:37	0
3093870	99	47	40,5	cyclictest	3298715	-21	awk	12:25:23	1
3093870	99	47	40,5	cyclictest	3298715	-21	awk	12:25:23	1
3093870	99	47	39,6	cyclictest	3109803	-21	gltestperf	08:10:19	1
3093870	99	47	39,5	cyclictest	3127420	-21	kworker/u4:12-rpciod	09:15:30	1
3093870	99	47	32,6	cyclictest	3255645	-21	kworker/u4:9+events_unbound	11:39:22	1
3093870	99	47	32,6	cyclictest	3242857	-21	kworker/u4:8+events_unbound	11:51:47	1
3093870	99	47	31,6	cyclictest	3132020	-21	kworker/u4:15+events_unbound	09:23:34	1
3093869	99	47	39,6	cyclictest	3280658	-21	fschecks_count	12:05:20	0
3093869	99	47	38,7	cyclictest	3167567	-21	kworker/u4:9+events_unbound	10:10:58	0
3093870	99	46	41,4	cyclictest	3093805	-21	kworker/u4:11+events_unbound	07:35:16	1
3093870	99	46	39,4	cyclictest	0	-21	swapper/1	09:40:51	1
3093870	99	46	37,7	cyclictest	3114752	-21	df_abs	08:30:18	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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