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 Jun 22, 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
2813810	99	113	94,5	cyclictest	2904823	-21	kworker/u4:19+events_unbound	22:17:00	0
2813811	99	112	97,7	cyclictest	2840599	-21	kworker/u4:13+events_unbound	21:11:48	1
2813811	99	109	101,6	cyclictest	2873853	-21	kworker/u4:2+events_unbound	21:46:55	1
2813810	99	106	97,7	cyclictest	2931893	-21	kworker/u4:15+events_unbound	23:12:10	0
2813810	99	106	89,6	cyclictest	2878386	-21	kworker/u4:3+events_unbound	21:51:56	0
2813811	99	105	97,6	cyclictest	2825268	-21	kworker/u4:10+events_unbound	20:46:44	1
2813811	99	102	95,5	cyclictest	2918369	-21	kworker/u4:2+events_unbound	22:37:03	1
2813811	99	102	87,7	cyclictest	2808810	-21	kworker/u4:2+events_unbound	20:21:39	1
2813810	99	100	63,20	cyclictest	53	-21	kswapd0	22:55:09	0
2813811	99	99	92,5	cyclictest	2823988	-21	kworker/u4:1+events_unbound	20:36:41	1
2813810	99	95	73,16	cyclictest	53	-21	kswapd0	00:20:06	0
2813810	99	95	70,20	cyclictest	53	-21	kswapd0	23:45:09	0
2813810	99	94	86,6	cyclictest	2878386	-21	kworker/u4:3+events_unbound	22:06:59	0
2813810	99	93	85,5	cyclictest	2900315	-21	kworker/u4:1+events_unbound	22:22:01	0
2813811	99	92	84,6	cyclictest	2940168	-21	kworker/u4:19+events_unbound	22:57:07	1
2813810	99	92	83,7	cyclictest	2942543	-21	ssh	23:00:14	0
2813810	99	92	83,5	cyclictest	15	1	ktimers/0	23:06:59	0
2813810	99	92	72,7	cyclictest	2831659	-21	kworker/u4:21+events_unbound	20:35:01	0
2813810	99	91	84,5	cyclictest	2949066	-21	kworker/u4:6+events_unbound	23:37:15	0
2813810	99	91	84,5	cyclictest	2949066	-21	kworker/u4:6+events_unbound	23:37:15	0
2813810	99	90	82,5	cyclictest	2979392	-21	kworker/u4:13+events_unbound	23:45:01	0
2813810	99	90	82,5	cyclictest	2979392	-21	kworker/u4:13+events_unbound	23:45:00	0
2813810	99	89	82,5	cyclictest	2949066	-21	kworker/u4:6+events_unbound	23:17:09	0
2813811	99	87	80,5	cyclictest	2820151	-21	kworker/u4:8+events_unbound	19:56:34	1
2813810	99	82	74,6	cyclictest	2891269	-21	kworker/u4:14+events_unbound	22:27:02	0
2813810	99	82	74,6	cyclictest	2891269	-21	kworker/u4:14+events_unbound	22:27:02	0
2813810	99	76	69,5	cyclictest	2992749	-21	kworker/u4:1+events_unbound	23:57:19	0
2813810	99	75	60,11	cyclictest	3023905	-21	sh	00:32:47	0
2813811	99	74	68,4	cyclictest	2860313	-21	kworker/u4:13+events_unbound	21:41:54	1
2813810	99	73	61,4	cyclictest	2983842	-21	kworker/u4:4+events_unbound	00:13:21	0
2813810	99	72	62,7	cyclictest	2860313	-21	kworker/u4:13+events_unbound	21:31:53	0
2813810	99	70	54,7	cyclictest	2926745	-21	kworker/u4:11+events_unbound	22:42:03	0
2813810	99	68	17,40	cyclictest	256	50	irq/23-42890000.ethernet	23:25:28	0
2813811	99	67	52,12	cyclictest	0	-21	swapper/1	23:20:14	1
2813810	99	67	60,5	cyclictest	2918368	-21	kworker/u4:0+events_unbound	22:55:01	0
2813810	99	66	47,6	cyclictest	3023364	-21	kworker/u4:7+events_unbound	00:35:58	0
2813811	99	65	58,5	cyclictest	2808810	-21	kworker/u4:2+events_unbound	19:35:03	1
2813811	99	65	56,6	cyclictest	3003502	-21	cut	00:10:02	1
2813811	99	65	52,9	cyclictest	2915706	-21	modprobe	22:30:00	1
2813811	99	65	52,9	cyclictest	2915706	-21	modprobe	22:30:00	1
2813811	99	65	48,13	cyclictest	2885178	-21	fschecks_count	21:55:18	1
2813810	99	65	54,5	cyclictest	2830369	-21	kworker/u4:19+events_unbound	20:11:36	0
2813811	99	64	48,10	cyclictest	2906798	-21	cron	22:20:00	1
2813810	99	64	3,13	cyclictest	2985825	-21	apt-get	23:50:11	0
2813811	99	63	56,5	cyclictest	2827836	-21	kworker/u4:12+events_unbound	20:25:02	1
2813810	99	63	5,36	cyclictest	2813785	-21	munin-run	19:10:01	0
2813811	99	62	50,10	cyclictest	2822720	-21	systemd	19:41:29	1
2813811	99	62	50,10	cyclictest	2822720	-21	systemd	19:41:29	1
2813810	99	62	55,5	cyclictest	2808810	-21	kworker/u4:2+events_unbound	21:10:59	0
2813810	99	62	45,5	cyclictest	2851894	-21	kworker/u4:8+events_unbound	21:20:45	0
2813811	99	61	52,5	cyclictest	3013780	-21	unixbench_singl	00:20:44	1
2813811	99	61	48,10	cyclictest	2844511	-21	systemd	21:06:47	1
2813810	99	61	55,4	cyclictest	2797483	-21	kworker/u4:13+events_unbound	19:11:25	0
2813810	99	61	36,6	cyclictest	2949067	-21	kworker/u4:7+events_unbound	23:21:46	0
2813811	99	59	50,6	cyclictest	2808810	-21	kworker/u4:2+events_unbound	19:17:01	1
2813811	99	59	48,7	cyclictest	2981426	-21	modprobe	23:45:01	1
2813811	99	59	48,7	cyclictest	2981426	-21	modprobe	23:45:00	1
2813810	99	59	52,5	cyclictest	2836762	-21	kworker/u4:4+events_unbound	20:41:44	0
2813810	99	59	50,6	cyclictest	2927397	-21	kworker/u4:12+events_unbound	22:45:02	0
2813811	99	58	6,46	cyclictest	2894457	-21	sh	22:05:26	1
2813811	99	58	44,6	cyclictest	2983847	-21	kworker/u4:10+events_unbound	23:52:00	1
2813810	99	58	49,3	cyclictest	2797483	-21	kworker/u4:13+events_unbound	19:16:26	0
2813811	99	57	45,5	cyclictest	2949067	-21	kworker/u4:7+events_unbound	23:33:00	1
2813811	99	57	43,9	cyclictest	2880779	-21	ssh	21:50:22	1
2813811	99	57	43,6	cyclictest	3009911	-21	kworker/u4:5+events_unbound	00:16:59	1
2813811	99	57	43,10	cyclictest	0	-21	swapper/1	21:30:27	1
2813810	99	57	41,6	cyclictest	2983841	-21	kworker/u4:3+events_unbound	00:25:03	0
2813811	99	56	21,22	cyclictest	0	-21	swapper/1	22:00:18	1
2813810	99	56	48,6	cyclictest	2873853	-21	kworker/u4:2+events_unbound	21:55:34	0
2813810	99	56	47,7	cyclictest	2873651	-21	systemd	21:41:52	0
2813810	99	56	43,5	cyclictest	2823988	-21	kworker/u4:1+events_unbound	21:06:48	0
2813810	99	55	48,5	cyclictest	2878386	-21	kworker/u4:3+events_unbound	22:00:03	0
2813810	99	55	44,5	cyclictest	2825258	-21	kworker/u4:0+events_unbound	20:26:40	0
2813810	99	55	34,18	cyclictest	0	-21	swapper/0	21:45:36	0
2813811	99	54	48,4	cyclictest	0	-21	swapper/1	00:35:36	1
2813811	99	54	47,5	cyclictest	2891269	-21	kworker/u4:14+events_unbound	22:40:02	1
2813811	99	54	47,5	cyclictest	2849890	-21	kernelversion	21:15:23	1
2813811	99	54	47,5	cyclictest	2808810	-21	kworker/u4:2+events_unbound	19:53:45	1
2813810	99	54	47,5	cyclictest	2891269	-21	kworker/u4:14+events_unbound	22:33:00	0
2813810	99	54	46,6	cyclictest	2891269	-21	kworker/u4:14+events_unbound	22:15:00	0
2813810	99	54	46,6	cyclictest	2836761	-21	kworker/u4:0+events_unbound	21:16:49	0
2813810	99	54	43,9	cyclictest	2983842	-21	kworker/u4:4+events_unbound	00:03:00	0
2813811	99	53	8,34	cyclictest	3017756	-21	ssh	00:25:38	1
2813810	99	53	46,5	cyclictest	2858449	-21	df_abs	21:25:17	0
2813811	99	52	46,4	cyclictest	2891269	-21	kworker/u4:14+events_unbound	22:24:59	1
2813811	99	52	45,5	cyclictest	2827824	-21	kworker/u4:6+events_unbound	20:10:00	1
2813810	99	52	47,3	cyclictest	2983842	-21	kworker/u4:4+events_unbound	00:18:20	0
2813810	99	52	45,4	cyclictest	2840626	-21	apt-get	20:55:09	0
2813810	99	52	44,6	cyclictest	2868020	-21	ssh	21:35:41	0
2813811	99	51	43,6	cyclictest	53	-21	kswapd0	23:40:01	1
2813811	99	51	43,6	cyclictest	53	-21	kswapd0	23:40:00	1
2813811	99	51	42,7	cyclictest	2944763	-21	sd-accept	23:02:06	1
2813810	99	51	43,6	cyclictest	2808811	-21	kworker/u4:3+events_unbound	19:36:31	0
2813811	99	50	42,6	cyclictest	2949123	-21	ssh	23:07:07	1
2813810	99	50	41,7	cyclictest	2808811	-21	kworker/u4:3+events_unbound	20:05:27	0
2813811	99	49	41,6	cyclictest	2823988	-21	kworker/u4:1+events_unbound	21:01:00	1
2813811	99	49	41,6	cyclictest	0	-21	swapper/1	22:45:37	1
2813811	99	49	39,8	cyclictest	2841945	-21	systemd	20:56:44	1
2813810	99	49	42,5	cyclictest	2815041	-21	kworker/u4:9+events_unbound	19:41:31	0
2813810	99	49	42,5	cyclictest	2815041	-21	kworker/u4:9+events_unbound	19:41:31	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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