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 Feb 14, 2026 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3542179	99	82	73,7	cyclictest	3619037	-21	kworker/u4:4+events_unbound	10:25:00	1
3542179	99	82	38,38	cyclictest	3578261	-21	ntpq	09:15:34	1
3542179	99	82	37,40	cyclictest	0	-21	swapper/1	12:35:29	1
3542179	99	73	60,10	cyclictest	3551070	-21	kworker/u4:4+events_unbound	07:50:14	1
3542179	99	72	45,25	cyclictest	3613467	-21	/usr/sbin/munin	09:55:38	1
3542179	99	71	36,32	cyclictest	3609203	-21	who	09:50:41	1
3542179	99	71	35,32	cyclictest	3734402	-21	ps	12:15:35	1
3542179	99	69	32,34	cyclictest	0	-21	swapper/1	09:30:26	1
3542179	99	68	7,13	cyclictest	3686535	-21	ssh	11:20:35	1
3542179	99	68	61,5	cyclictest	3542174	-21	cyclictest	10:10:39	1
3542179	99	68	57,8	cyclictest	3562602	-21	kworker/u4:11+events_unbound	08:30:34	1
3542179	99	68	5,14	cyclictest	3548542	-21	modprobe	07:35:00	1
3542179	99	68	4,13	cyclictest	3695085	-21	ssh	11:30:26	1
3542179	99	67	33,30	cyclictest	0	-21	swapper/1	08:40:01	1
3542179	99	67	29,33	cyclictest	0	-21	swapper/1	10:40:33	1
3542179	99	67	28,36	cyclictest	0	-21	swapper/1	10:30:35	1
3542179	99	67	25,38	cyclictest	0	-21	swapper/1	07:55:36	1
3542179	99	66	35,28	cyclictest	3653547	-21	kworker/u4:5-xprtiod	10:50:16	1
3542179	99	66	33,30	cyclictest	3559962	-21	kworker/u4:13-rpciod	08:45:23	1
3542179	99	66	29,34	cyclictest	0	-21	swapper/1	10:55:18	1
3542179	99	66	28,34	cyclictest	0	-21	swapper/1	09:35:26	1
3542179	99	66	26,34	cyclictest	0	-21	swapper/1	10:26:07	1
3542179	99	66	25,4	cyclictest	0	-21	swapper/1	10:45:28	1
3542179	99	65	47,15	cyclictest	3711845	-21	ssh	11:50:15	1
3542179	99	65	34,27	cyclictest	3696835	-21	kworker/u4:5-rpciod	11:45:35	1
3542179	99	65	29,32	cyclictest	0	-21	swapper/1	11:05:25	1
3542179	99	65	28,4	cyclictest	0	-21	swapper/1	09:25:35	1
3542179	99	65	28,35	cyclictest	3725882	-21	mailstats	12:05:36	1
3542179	99	65	28,34	cyclictest	0	-21	swapper/1	09:45:10	1
3542179	99	65	27,35	cyclictest	3620694	-21	latency_hist	10:05:01	1
3542179	99	64	55,7	cyclictest	3552326	-21	kworker/u4:9+events_unbound	08:05:22	1
3542179	99	64	22,8	cyclictest	0	-21	swapper/1	08:50:36	1
3542179	99	63	30,31	cyclictest	0	-21	swapper/1	11:55:24	1
3542179	99	63	30,30	cyclictest	0	-21	swapper/1	08:25:41	1
3542179	99	63	29,31	cyclictest	0	-21	swapper/1	11:40:30	1
3542179	99	63	28,32	cyclictest	0	-21	swapper/1	11:15:33	1
3542179	99	63	28,32	cyclictest	0	-21	swapper/1	09:40:25	1
3542179	99	63	27,32	cyclictest	0	-21	swapper/1	11:00:31	1
3542179	99	63	25,6	cyclictest	0	-21	swapper/1	10:35:28	1
3542179	99	63	25,35	cyclictest	3549964	-21	latency_hist	07:40:01	1
3542179	99	62	4,20	cyclictest	3742852	-21	ssh	12:25:30	1
3542179	99	62	41,17	cyclictest	0	-21	swapper/1	12:10:18	1
3542179	99	62	26,5	cyclictest	3572692	-21	kworker/u4:15-rpciod	09:10:39	1
3542179	99	62	26,5	cyclictest	3542596	-21	fschecks_count	07:10:19	1
3542179	99	62	26,32	cyclictest	0	-21	swapper/1	12:20:21	1
3542179	99	62	25,6	cyclictest	0	-21	swapper/1	09:20:25	1
3542179	99	62	24,9	cyclictest	0	-21	swapper/1	08:10:34	1
3542177	99	62	12,29	cyclictest	3695111	-21	ssh	11:30:26	0
3542177	99	61	39,19	cyclictest	3674019	-21	unixbench_multi	11:05:39	0
3542179	99	60	50,7	cyclictest	3555301	-21	fschecks_count	08:00:21	1
3542179	99	60	29,28	cyclictest	0	-21	swapper/1	12:30:29	1
3542179	99	60	26,7	cyclictest	0	-21	swapper/1	10:05:24	1
3542179	99	60	26,4	cyclictest	3610153	-21	kworker/u4:7-rpciod	10:15:38	1
3542179	99	60	24,6	cyclictest	0	-21	swapper/1	11:30:01	1
3542179	99	60	22,7	cyclictest	0	-21	swapper/1	11:10:37	1
3542179	99	59	25,5	cyclictest	0	-21	swapper/1	08:57:14	1
3542179	99	59	24,5	cyclictest	0	-21	swapper/1	07:45:15	1
3542177	99	59	47,9	cyclictest	3561261	-21	kworker/u4:10+events_unbound	08:35:34	0
3542179	99	58	48,8	cyclictest	3323269	-21	kworker/u4:7+events_unbound	07:40:12	1
3542179	99	58	25,5	cyclictest	0	-21	swapper/1	09:00:18	1
3542179	99	57	24,5	cyclictest	0	-21	swapper/1	11:35:39	1
3542177	99	57	52,3	cyclictest	15	1	ktimers/0	07:42:16	0
3542177	99	56	6,45	cyclictest	3747102	-21	ssh	12:30:26	0
3542177	99	56	25,26	cyclictest	3603537	-21	ssh	09:45:12	0
3542179	99	55	23,5	cyclictest	0	-21	swapper/1	07:25:35	1
3542177	99	55	8,42	cyclictest	3573717	-21	ssh	09:10:25	0
3542177	99	55	5,34	cyclictest	3727505	-21	ssh	12:07:45	0
3542177	99	55	45,7	cyclictest	3683607	-21	kworker/u4:6+events_unbound	12:01:10	0
3542177	99	55	38,15	cyclictest	3587226	-21	threads	09:25:36	0
3542177	99	54	46,6	cyclictest	3539705	-21	kworker/u4:6+events_unbound	08:25:30	0
3542177	99	54	13,15	cyclictest	3704639	-21	ssh	11:41:00	0
3542177	99	53	49,3	cyclictest	3323269	-21	kworker/u4:7+events_unbound	09:35:48	0
3542177	99	53	45,5	cyclictest	3552520	-21	apt-get	07:50:14	0
3542177	99	53	45,5	cyclictest	0	-21	swapper/0	11:15:27	0
3542179	99	52	40,9	cyclictest	3724670	-21	latency_hist	12:05:02	1
3542177	99	52	45,5	cyclictest	3699406	-21	/usr/sbin/munin	11:35:25	0
3542177	99	52	45,5	cyclictest	3655945	-21	gltestperf	10:45:20	0
3542177	99	52	44,6	cyclictest	3713865	-21	kworker/u4:13+events_unbound	11:56:08	0
3542177	99	52	37,9	cyclictest	3552327	-21	kworker/u4:11+events_unbound	08:05:06	0
3542177	99	51	41,8	cyclictest	3644736	-21	kworker/u4:7+events_unbound	10:35:00	0
3542177	99	51	12,15	cyclictest	3753887	-21	ssh	12:38:26	0
3542177	99	50	43,5	cyclictest	3542112	-21	kworker/u4:2+xprtiod	07:20:11	0
3542177	99	50	41,7	cyclictest	3634849	-21	/usr/sbin/munin	10:20:38	0
3542177	99	50	39,8	cyclictest	3630836	-21	unixbench_singl	10:15:40	0
3542177	99	50	39,6	cyclictest	0	-21	swapper/0	09:41:37	0
3542177	99	50	32,12	cyclictest	3668786	-21	ssh	11:00:18	0
3542177	99	50	10,15	cyclictest	3648788	-21	ssh	10:36:45	0
3542177	99	49	36,7	cyclictest	0	-21	swapper/0	10:13:22	0
3542177	99	49	31,4	cyclictest	0	-21	swapper/0	10:00:00	0
3542177	99	49	31,15	cyclictest	0	-21	swapper/0	10:40:29	0
3542177	99	49	28,17	cyclictest	3553773	-21	apt-get	07:55:13	0
3542177	99	48	6,22	cyclictest	3607975	-21	basename	09:50:16	0
3542177	99	48	40,5	cyclictest	0	-21	swapper/0	10:55:12	0
3542177	99	48	34,6	cyclictest	255	50	irq/23-42890000.ethernet	09:15:11	0
3542177	99	48	14,9	cyclictest	3711697	-21	ssh	11:50:02	0
3542177	99	48	13,11	cyclictest	3688588	-21	ssh	11:23:10	0
3542177	99	48	11,11	cyclictest	3567182	-21	ntpq	08:45:27	0
3542177	99	48	10,14	cyclictest	3708032	-21	irqstats	11:45:22	0
3542179	99	47	41,4	cyclictest	3566247	-21	sshd	08:40:35	1
3542179	99	47	39,5	cyclictest	0	-21	swapper/1	08:20:26	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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