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 02, 2026 00:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
702234	99	122	101,7	cyclictest	775783	-21	kworker/u4:7+events_unbound	22:12:35	0
702236	99	108	88,7	cyclictest	890248	-21	kworker/u4:6+events_unbound	00:27:55	1
702236	99	108	88,7	cyclictest	890248	-21	kworker/u4:6+events_unbound	00:27:54	1
702234	99	105	87,6	cyclictest	842011	-21	kworker/u4:13+events_unbound	23:12:42	0
702236	99	98	92,4	cyclictest	868743	-21	kworker/u4:2+events_unbound	00:02:49	1
702236	99	96	77,7	cyclictest	820076	-21	kworker/u4:8+events_unbound	22:57:41	1
702234	99	94	86,6	cyclictest	802032	-21	kworker/u4:10+events_unbound	22:42:39	0
702236	99	93	85,6	cyclictest	740120	-21	kworker/u4:5+events_unbound	21:42:33	1
702236	99	90	83,5	cyclictest	753233	-21	kworker/u4:9+events_unbound	21:37:31	1
702236	99	90	83,5	cyclictest	753233	-21	kworker/u4:9+events_unbound	21:37:31	1
702234	99	87	80,5	cyclictest	912855	-21	kworker/u4:5+events_unbound	00:37:54	0
702236	99	85	70,12	cyclictest	0	-21	swapper/1	23:35:28	1
702234	99	83	75,6	cyclictest	829112	-21	kworker/u4:1+events_unbound	23:22:43	0
702234	99	83	75,6	cyclictest	740120	-21	kworker/u4:5+events_unbound	21:17:28	0
702234	99	82	73,6	cyclictest	872515	-21	kworker/u4:9+events_unbound	23:47:48	0
702236	99	78	63,6	cyclictest	703456	-21	kworker/u4:7+events_unbound	19:27:14	1
702234	99	78	71,5	cyclictest	885832	-21	kworker/u4:8+events_unbound	00:17:52	0
702234	99	78	70,6	cyclictest	851017	-21	kworker/u4:8+events_unbound	23:32:47	0
702236	99	77	69,6	cyclictest	723993	-21	kworker/u4:11+events_unbound	20:32:24	1
702236	99	77	62,6	cyclictest	712410	-21	kworker/u4:19+events_unbound	19:52:16	1
702236	99	76	68,6	cyclictest	833648	-21	kworker/u4:6+events_unbound	23:02:40	1
702234	99	76	67,6	cyclictest	717516	-21	kworker/u4:5+events_unbound	20:47:25	0
702236	99	74	66,6	cyclictest	709843	-21	kworker/u4:17+events_unbound	19:42:15	1
702236	99	74	60,5	cyclictest	708575	-21	kworker/u4:16+events_unbound	20:07:18	1
702234	99	74	66,6	cyclictest	793701	-21	kworker/u4:2+events_unbound	22:27:36	0
702236	99	73	66,5	cyclictest	711141	-21	kworker/u4:18+events_unbound	20:52:24	1
702234	99	72	64,6	cyclictest	881385	-21	kworker/u4:3+events_unbound	23:57:48	0
702236	99	71	63,6	cyclictest	732934	-21	kworker/u4:15+events_unbound	21:07:26	1
702236	99	70	63,5	cyclictest	726559	-21	kworker/u4:14+events_unbound	21:12:28	1
702236	99	70	62,6	cyclictest	703456	-21	kworker/u4:7+events_unbound	19:57:17	1
702236	99	70	61,7	cyclictest	725263	-21	kworker/u4:12+events_unbound	21:02:26	1
702234	99	70	63,5	cyclictest	780243	-21	kworker/u4:12+events_unbound	22:02:34	0
702236	99	69	61,6	cyclictest	851017	-21	kworker/u4:8+events_unbound	23:27:44	1
702234	99	68	56,5	cyclictest	726559	-21	kworker/u4:14+events_unbound	20:45:01	0
702234	99	68	56,5	cyclictest	726559	-21	kworker/u4:14+events_unbound	20:45:00	0
702236	99	67	47,7	cyclictest	744728	-21	kworker/u4:1+events_unbound	21:50:02	1
702234	99	66	58,6	cyclictest	820073	-21	kworker/u4:3+events_unbound	23:10:01	0
702236	99	65	57,6	cyclictest	703456	-21	kworker/u4:7+events_unbound	19:12:10	1
702236	99	63	55,6	cyclictest	721366	-21	kworker/u4:7+events_unbound	20:22:21	1
702236	99	63	55,6	cyclictest	721366	-21	kworker/u4:7+events_unbound	20:22:20	1
702234	99	63	44,6	cyclictest	792202	-21	mailstats	22:15:43	0
702236	99	62	55,5	cyclictest	704737	-21	kworker/u4:12+events_unbound	20:02:18	1
702236	99	62	54,6	cyclictest	693673	-21	kworker/u4:13+events_unbound	19:22:13	1
702234	99	62	54,6	cyclictest	718787	-21	kworker/u4:9+events_unbound	20:12:17	0
702236	99	61	42,6	cyclictest	820075	-21	kworker/u4:7+events_unbound	23:05:22	1
702234	99	60	53,5	cyclictest	793701	-21	kworker/u4:2+events_unbound	22:35:03	0
702234	99	60	42,9	cyclictest	0	-21	swapper/0	23:35:39	0
702236	99	59	41,6	cyclictest	851015	-21	kworker/u4:6+events_unbound	23:34:45	1
702234	99	59	52,5	cyclictest	753233	-21	kworker/u4:9+events_unbound	21:32:29	0
702234	99	59	45,6	cyclictest	748645	-21	kworker/u4:3+events_unbound	21:40:14	0
702234	99	59	37,20	cyclictest	853351	-21	aten_r7power_po	23:25:15	0
702236	99	57	47,7	cyclictest	0	-21	swapper/1	22:45:29	1
702234	99	57	38,17	cyclictest	702232	-21	cyclictest	22:55:01	0
702236	99	56	47,7	cyclictest	37	-21	kcompactd0	00:35:15	1
702236	99	56	38,6	cyclictest	751793	-21	gltestperf	21:30:18	1
702234	99	56	48,6	cyclictest	721366	-21	kworker/u4:7+events_unbound	20:27:23	0
702234	99	56	48,6	cyclictest	692370	-21	kworker/u4:2+events_unbound	19:32:14	0
702234	99	56	41,13	cyclictest	868743	-21	kworker/u4:2+events_unbound	00:05:00	0
702236	99	55	47,6	cyclictest	846524	-21	kworker/u4:3+events_unbound	23:17:44	1
702236	99	55	44,6	cyclictest	744731	-21	kworker/u4:2+events_unbound	21:25:46	1
702234	99	55	48,5	cyclictest	740119	-21	kworker/u4:4+events_unbound	21:27:28	0
702234	99	55	47,6	cyclictest	806508	-21	kworker/u4:5+events_unbound	22:32:38	0
702234	99	55	43,4	cyclictest	704723	-21	kworker/u4:10+events_unbound	19:20:01	0
702234	99	55	38,6	cyclictest	17	1	rcu_preempt	21:40:01	0
702234	99	55	38,6	cyclictest	17	1	rcu_preempt	21:40:00	0
702236	99	54	47,5	cyclictest	725263	-21	kworker/u4:12+events_unbound	20:37:23	1
702234	99	53	45,5	cyclictest	905826	-21	ssh	00:25:12	0
702234	99	53	45,5	cyclictest	905826	-21	ssh	00:25:12	0
702234	99	53	43,7	cyclictest	783673	-21	diskmemload	22:05:45	0
702234	99	53	36,15	cyclictest	831288	-21	wget	23:00:17	0
702234	99	53	1,39	cyclictest	893093	-21	ssh	00:10:25	0
702236	99	52	46,4	cyclictest	885829	-21	kworker/u4:1+events_unbound	00:15:20	1
702236	99	52	45,5	cyclictest	711141	-21	kworker/u4:18+events_unbound	20:55:03	1
702236	99	52	41,9	cyclictest	787316	-21	/usr/sbin/munin	22:10:22	1
702236	99	52	40,9	cyclictest	778932	-21	ps	22:00:44	1
702236	99	52	39,11	cyclictest	0	-21	swapper/1	21:55:14	1
702236	99	52	31,6	cyclictest	863646	-21	kworker/u4:3+events_unbound	23:49:17	1
702234	99	52	44,6	cyclictest	711141	-21	kworker/u4:18+events_unbound	20:17:20	0
702234	99	52	31,19	cyclictest	866597	-21	fschecks_count	23:40:19	0
702234	99	51	43,6	cyclictest	793701	-21	kworker/u4:2+events_unbound	22:25:01	0
702234	99	51	43,6	cyclictest	793701	-21	kworker/u4:2+events_unbound	22:25:00	0
702236	99	50	32,6	cyclictest	868744	-21	kworker/u4:5+events_unbound	23:52:25	1
702234	99	50	42,5	cyclictest	902152	-21	ntpq	00:20:32	0
702234	99	50	41,5	cyclictest	729125	-21	kworker/u4:1	20:55:01	0
702234	99	50	39,5	cyclictest	885829	-21	kworker/u4:1+events_unbound	00:09:46	0
702234	99	50	34,6	cyclictest	726559	-21	kworker/u4:14+events_unbound	21:59:48	0
702236	99	49	42,5	cyclictest	738153	-21	cut	21:15:20	1
702236	99	49	41,6	cyclictest	885829	-21	kworker/u4:1+events_unbound	00:13:16	1
702236	99	49	41,5	cyclictest	742882	-21	kernelversion	21:20:22	1
702236	99	49	40,7	cyclictest	867471	-21	timerwakeupswit	23:40:40	1
702236	99	49	40,7	cyclictest	795643	-21	diskmemload	22:20:16	1
702236	99	49	40,7	cyclictest	795643	-21	diskmemload	22:20:15	1
702236	99	49	40,5	cyclictest	0	-21	swapper/1	22:50:17	1
702234	99	49	43,4	cyclictest	702351	-21	latency_hist	19:10:02	0
702234	99	49	41,6	cyclictest	715438	-21	fschecks_count	20:00:19	0
702234	99	49	41,5	cyclictest	769352	-21	df_abs	21:50:17	0
702236	99	48	42,4	cyclictest	841230	-21	unixbench_multi	23:10:40	1
702236	99	48	38,6	cyclictest	0	-21	swapper/1	00:05:35	1
702236	99	48	37,5	cyclictest	912200	-21	kworker/u4:4+events_unbound	00:31:44	1
702236	99	48	26,7	cyclictest	793701	-21	kworker/u4:2+events_unbound	22:29:53	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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