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 Sun Aug 23, 2026 00:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3146377	99	100	92,6	cyclictest	3318727	-21	kworker/u4:1+events_unbound	23:47:44	0
3146379	99	97	39,43	cyclictest	317	-21	systemd-journal	00:07:47	1
3146377	99	96	88,6	cyclictest	3314208	-21	kworker/u4:5+events_unbound	23:42:43	0
3146377	99	95	87,5	cyclictest	3247540	-21	kworker/u4:1+events_unbound	22:52:36	0
3146377	99	93	85,6	cyclictest	3256573	-21	kworker/u4:0+events_unbound	22:37:34	0
3146377	99	93	85,6	cyclictest	3152810	-21	kworker/u4:5+events_unbound	20:57:14	0
3146377	99	90	82,6	cyclictest	3164287	-21	kworker/u4:14+events_unbound	20:32:09	0
3146377	99	87	78,7	cyclictest	3159182	-21	kworker/u4:1+events_unbound	20:17:08	0
3146377	99	86	79,5	cyclictest	3131271	-21	kworker/u4:0+events_unbound	19:32:05	0
3146377	99	86	78,6	cyclictest	3309642	-21	kworker/u4:16+events_unbound	00:12:47	0
3146377	99	85	78,5	cyclictest	3202615	-21	kworker/u4:2+events_unbound	21:42:17	0
3146377	99	84	76,6	cyclictest	3243019	-21	kworker/u4:11+events_unbound	22:22:30	0
3146377	99	83	76,5	cyclictest	3148865	-21	kworker/u4:2+events_unbound	19:17:04	0
3146377	99	81	73,6	cyclictest	3301237	-21	kworker/u4:13+events_unbound	23:27:41	0
3146377	99	81	73,6	cyclictest	3301237	-21	kworker/u4:13+events_unbound	23:27:40	0
3146377	99	80	72,6	cyclictest	3188791	-21	kworker/u4:4+events_unbound	21:27:15	0
3146379	99	79	32,31	cyclictest	3281354	-21	if_eth0	23:05:22	1
3146377	99	79	72,5	cyclictest	3211177	-21	kworker/u4:8+events_unbound	21:47:17	0
3146379	99	78	27,27	cyclictest	0	-21	swapper/1	00:35:37	1
3146377	99	78	71,5	cyclictest	3292149	-21	kworker/u4:3+events_unbound	23:17:39	0
3146379	99	77	35,37	cyclictest	3271927	-21	aten_r7power_cu	22:55:17	1
3146377	99	76	69,5	cyclictest	3137688	-21	kworker/u4:17+events_unbound	19:42:06	0
3146377	99	76	68,6	cyclictest	3154083	-21	kworker/u4:3+events_unbound	19:57:07	0
3146377	99	75	63,6	cyclictest	3278570	-21	kworker/u4:5+events_unbound	23:02:37	0
3146379	99	73	62,6	cyclictest	3277185	-21	ld	23:00:33	1
3146379	99	72	26,29	cyclictest	0	-21	swapper/1	00:10:21	1
3146379	99	72	25,26	cyclictest	0	-21	swapper/1	22:25:37	1
3146379	99	71	37,31	cyclictest	3321898	-21	diskmemload	23:50:38	1
3146379	99	71	27,27	cyclictest	0	-21	swapper/1	22:40:38	1
3146379	99	71	13,35	cyclictest	3357309	-21	sh	00:30:33	1
3146379	99	70	54,11	cyclictest	0	-21	swapper/1	22:10:27	1
3146379	99	70	40,28	cyclictest	3195386	-21	munin-run	21:30:00	1
3146379	99	70	25,27	cyclictest	0	-21	swapper/1	23:30:26	1
3146379	99	70	2,43	cyclictest	3184710	-21	ssh	21:17:39	1
3146379	99	70	24,26	cyclictest	0	-21	swapper/1	22:37:32	1
3146379	99	69	23,29	cyclictest	3244843	-21	munin-run	22:25:00	1
3146379	99	69	12,36	cyclictest	1073	-21	snmpd	23:45:03	1
3146379	99	68	34,31	cyclictest	3203589	-21	sh	21:38:44	1
3146379	99	67	36,28	cyclictest	3299256	-21	/usr/sbin/munin	23:25:24	1
3146379	99	67	36,28	cyclictest	3299256	-21	/usr/sbin/munin	23:25:24	1
3146379	99	67	34,28	cyclictest	3187051	-21	tune2fs	21:20:21	1
3146379	99	66	8,50	cyclictest	3326108	-21	sh	23:55:29	1
3146379	99	66	2,13	cyclictest	3263592	-21	ssh	22:45:23	1
3146379	99	65	32,31	cyclictest	3218814	-21	if_eth0	21:55:21	1
3146379	99	65	31,31	cyclictest	3155216	-21	timerwakeupswit	19:40:37	1
3146379	99	65	1,12	cyclictest	3296113	-21	ssh	23:21:36	1
3146377	99	64	0,29	cyclictest	3170742	-21	apt-get	20:45:11	0
3146379	99	63	32,28	cyclictest	3223228	-21	grep	22:00:20	1
3146379	99	63	30,31	cyclictest	3286334	-21	sh	23:10:38	1
3146379	99	63	1,13	cyclictest	3178202	-21	ntpq	21:10:26	1
3146377	99	63	52,7	cyclictest	0	-21	swapper/0	22:00:11	0
3146379	99	62	52,5	cyclictest	0	-21	swapper/1	22:15:08	1
3146379	99	62	31,28	cyclictest	0	-21	swapper/1	22:30:17	1
3146379	99	62	2,55	cyclictest	3329901	-21	ssh	00:00:18	1
3146379	99	62	1,56	cyclictest	3268110	-21	ssh	22:50:26	1
3146377	99	62	45,11	cyclictest	53	-21	kswapd0	21:50:08	0
3146379	99	61	1,40	cyclictest	3208714	-21	ssh	21:44:37	1
3146377	99	61	51,8	cyclictest	3233912	-21	kworker/u4:4+events_unbound	22:25:46	0
3146379	99	60	4,51	cyclictest	3289687	-21	ssh	23:15:11	1
3146379	99	60	4,50	cyclictest	3214645	-21	ssh	21:50:33	1
3146379	99	60	29,28	cyclictest	3173159	-21	timerwakeupswit	20:50:38	1
3146379	99	59	2,53	cyclictest	3307521	-21	apt-get	23:35:14	1
3146379	99	59	2,53	cyclictest	3210137	-21	ntpq	21:45:33	1
3146379	99	59	2,51	cyclictest	1073	-21	snmpd	00:16:47	1
3146379	99	58	4,50	cyclictest	3157544	-21	ps	19:50:35	1
3146379	99	58	25,29	cyclictest	0	-21	swapper/1	21:00:38	1
3146379	99	58	24,32	cyclictest	3165340	-21	switchtime	20:20:36	1
3146379	99	58	24,30	cyclictest	0	-21	swapper/1	22:05:27	1
3146377	99	58	51,5	cyclictest	3152810	-21	kworker/u4:5+events_unbound	21:02:13	0
3146379	99	57	4,48	cyclictest	3176711	-21	ntpq	21:05:30	1
3146379	99	57	35,18	cyclictest	3156642	-21	kworker/u4:9-rpciod	19:55:38	1
3146379	99	57	3,48	cyclictest	3161240	-21	ntpq	20:05:26	1
3146379	99	57	25,6	cyclictest	0	-21	swapper/1	20:45:13	1
3146379	99	57	2,51	cyclictest	3195721	-21	ssh	21:30:17	1
3146379	99	57	2,50	cyclictest	3352728	-21	ntpq	00:25:28	1
3146379	99	57	2,15	cyclictest	3152318	-21	ntpq	19:30:38	1
3146379	99	57	1,14	cyclictest	3348480	-21	ssh	00:20:35	1
3146377	99	57	46,5	cyclictest	3283106	-21	kworker/u4:10+events_unbound	23:07:35	0
3146377	99	57	44,8	cyclictest	3345187	-21	kworker/u4:14-rpciod	00:20:02	0
3146379	99	56	2,48	cyclictest	3169632	-21	apt-get	20:40:17	1
3146379	99	56	24,28	cyclictest	3154082	-21	kworker/u4:2+rpciod	20:00:20	1
3146379	99	56	19,34	cyclictest	3147079	-21	ntpq	19:10:27	1
3146379	99	56	1,52	cyclictest	3148447	-21	ntp_states	19:15:35	1
3146377	99	56	45,9	cyclictest	3267118	-21	munin-plugin-st	22:49:59	0
3146379	99	55	30,21	cyclictest	0	-21	swapper/1	23:40:34	1
3146379	99	55	2,49	cyclictest	3150944	-21	ntpq	19:25:27	1
3146379	99	55	2,48	cyclictest	3153548	-21	ntpq	19:35:28	1
3146377	99	55	37,5	cyclictest	3304175	-21	grep	23:30:39	0
3146379	99	54	2,47	cyclictest	3163862	-21	ntpq	20:15:33	1
3146379	99	54	23,28	cyclictest	3161747	-21	kworker/u4:8+rpciod	20:30:00	1
3146377	99	54	47,5	cyclictest	3336974	-21	sh	00:07:47	0
3146377	99	54	45,6	cyclictest	3322097	-21	/usr/sbin/munin	23:50:40	0
3146379	99	53	8,42	cyclictest	1073	-21	snmpd	19:49:57	1
3146379	99	53	3,47	cyclictest	3168919	-21	ntpq	20:35:28	1
3146379	99	53	1,4	cyclictest	3162586	-21	ntpq	20:10:32	1
3146377	99	53	8,34	cyclictest	3229229	-21	ssh	22:06:40	0
3146377	99	53	47,4	cyclictest	3352322	-21	/usr/sbin/munin	00:25:18	0
3146379	99	52	2,6	cyclictest	3174081	-21	ntpq	20:55:26	1
3146379	99	52	2,46	cyclictest	3149655	-21	awk	19:20:23	1
3146377	99	52	46,4	cyclictest	3200680	-21	gltestperf	21:35:23	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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