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 Tue Jul 28, 2026 00:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2487662	99	104	96,5	cyclictest	2591355	-21	kworker/u4:9+events_unbound	22:37:29	0
2487662	99	104	96,5	cyclictest	2591355	-21	kworker/u4:9+events_unbound	22:37:29	0
2487662	99	104	85,7	cyclictest	2657979	-21	kworker/u4:9+events_unbound	00:07:44	0
2487663	99	102	93,7	cyclictest	2513285	-21	kworker/u4:13+events_unbound	20:47:18	1
2487662	99	102	94,6	cyclictest	2551727	-21	kworker/u4:16+events_unbound	21:52:23	0
2487662	99	100	81,7	cyclictest	2609297	-21	kworker/u4:10+events_unbound	22:52:32	0
2487663	99	99	92,5	cyclictest	2644453	-21	kworker/u4:9+events_unbound	23:32:36	1
2487663	99	96	89,5	cyclictest	2551727	-21	kworker/u4:16+events_unbound	21:47:24	1
2487662	99	93	75,7	cyclictest	2653473	-21	kworker/u4:10+events_unbound	00:22:46	0
2487663	99	91	79,5	cyclictest	2648947	-21	kworker/u4:3+events_unbound	23:47:39	1
2487663	99	90	83,5	cyclictest	2574026	-21	kworker/u4:0+events_unbound	22:27:29	1
2487662	99	87	79,6	cyclictest	2513285	-21	kworker/u4:13+events_unbound	21:17:21	0
2487662	99	87	79,6	cyclictest	2513285	-21	kworker/u4:13+events_unbound	21:17:21	0
2487663	99	86	78,6	cyclictest	2472352	-21	kworker/u4:1+events_unbound	19:17:10	1
2487662	99	85	71,12	cyclictest	2609294	-21	kworker/u4:7+events_unbound	23:02:33	0
2487662	99	85	51,28	cyclictest	2487660	-21	cyclictest	21:40:10	0
2487663	99	84	75,6	cyclictest	2490259	-21	kworker/u4:10+events_unbound	19:22:10	1
2487663	99	83	68,6	cyclictest	2679809	-21	kworker/u4:3+events_unbound	00:12:45	1
2487663	99	82	74,6	cyclictest	2512013	-21	kworker/u4:7+events_unbound	20:52:20	1
2487662	99	81	74,5	cyclictest	2560616	-21	kworker/u4:1+events_unbound	22:07:26	0
2487662	99	80	66,6	cyclictest	2490259	-21	kworker/u4:10+events_unbound	19:42:12	0
2487663	99	79	71,6	cyclictest	2494096	-21	kworker/u4:15+events_unbound	20:12:15	1
2487663	99	79	71,6	cyclictest	2488895	-21	kworker/u4:9+events_unbound	19:12:10	1
2487663	99	78	70,6	cyclictest	2534416	-21	kworker/u4:9+events_unbound	21:27:23	1
2487663	99	78	70,6	cyclictest	2497936	-21	kworker/u4:0+events_unbound	20:02:14	1
2487662	99	78	71,5	cyclictest	2560616	-21	kworker/u4:1+events_unbound	21:57:24	0
2487662	99	78	52,21	cyclictest	53	-21	kswapd0	21:20:11	0
2487663	99	77	70,5	cyclictest	2497936	-21	kworker/u4:0+events_unbound	20:17:16	1
2487663	99	77	69,6	cyclictest	2499213	-21	kworker/u4:11+events_unbound	19:57:15	1
2487663	99	77	69,6	cyclictest	2499213	-21	kworker/u4:11+events_unbound	19:57:14	1
2487662	99	75	69,4	cyclictest	2578528	-21	kworker/u4:3+events_unbound	22:22:28	0
2487662	99	73	6,54	cyclictest	2603456	-21	ssh	22:45:37	0
2487662	99	73	6,54	cyclictest	2603456	-21	ssh	22:45:37	0
2487662	99	72	64,6	cyclictest	2503049	-21	kworker/u4:8+events_unbound	20:22:16	0
2487662	99	70	2,58	cyclictest	2562903	-21	apt-get	22:00:18	0
2487662	99	68	51,5	cyclictest	2693308	-21	kworker/u4:5+events_unbound	00:40:00	0
2487663	99	67	41,14	cyclictest	2604815	-21	kworker/u4:6+events_unbound	22:47:46	1
2487663	99	67	41,14	cyclictest	2604815	-21	kworker/u4:6+events_unbound	22:47:45	1
2487663	99	65	58,5	cyclictest	2604812	-21	kworker/u4:1+events_unbound	23:07:35	1
2487662	99	65	59,4	cyclictest	2604812	-21	kworker/u4:1+events_unbound	23:10:02	0
2487662	99	65	58,5	cyclictest	2503049	-21	kworker/u4:8+events_unbound	20:07:14	0
2487662	99	64	57,5	cyclictest	2688829	-21	kworker/u4:3+events_unbound	00:32:46	0
2487662	99	64	12,50	cyclictest	0	-21	swapper/0	23:15:37	0
2487662	99	62	51,5	cyclictest	2487592	-21	kworker/u4:0+events_unbound	19:27:12	0
2487662	99	62	51,5	cyclictest	2487592	-21	kworker/u4:0+events_unbound	19:27:11	0
2487662	99	61	54,5	cyclictest	2504318	-21	kworker/u4:9+events_unbound	20:50:02	0
2487662	99	61	41,8	cyclictest	2657979	-21	kworker/u4:9+events_unbound	00:15:37	0
2487662	99	61	41,8	cyclictest	2657979	-21	kworker/u4:9+events_unbound	00:15:36	0
2487662	99	60	48,6	cyclictest	2517120	-21	kworker/u4:16+events_unbound	21:07:20	0
2487662	99	58	51,5	cyclictest	2666938	-21	kworker/u4:11+events_unbound	23:57:42	0
2487662	99	58	45,11	cyclictest	2635471	-21	kworker/u4:7+events_unbound	23:31:46	0
2487663	99	57	50,5	cyclictest	2574030	-21	kworker/u4:11+events_unbound	23:20:16	1
2487663	99	57	50,5	cyclictest	2574030	-21	kworker/u4:11+events_unbound	23:20:15	1
2487663	99	57	49,6	cyclictest	2525471	-21	kworker/u4:6+events_unbound	21:20:02	1
2487663	99	57	49,6	cyclictest	2525471	-21	kworker/u4:6+events_unbound	21:20:02	1
2487662	99	57	42,6	cyclictest	2587538	-21	kworker/u4:1+events_unbound	22:41:45	0
2487663	99	56	48,6	cyclictest	2598475	-21	fschecks_count	22:40:20	1
2487663	99	56	47,6	cyclictest	2695050	-21	modprobe	00:30:00	1
2487662	99	56	48,6	cyclictest	2508165	-21	kworker/u4:2+events_unbound	20:37:18	0
2487662	99	56	48,6	cyclictest	2508165	-21	kworker/u4:2+events_unbound	20:37:17	0
2487662	99	56	32,7	cyclictest	2639958	-21	kworker/u4:2+events_unbound	23:45:22	0
2487663	99	55	48,5	cyclictest	2517120	-21	kworker/u4:16+events_unbound	21:12:22	1
2487662	99	55	48,5	cyclictest	2488893	-21	kworker/u4:6+events_unbound	19:50:02	0
2487662	99	55	47,6	cyclictest	2508164	-21	kworker/u4:1+events_unbound	20:27:18	0
2487662	99	55	35,7	cyclictest	2512014	-21	kworker/u4:10+events_unbound	21:40:01	0
2487663	99	54	47,5	cyclictest	27	1	ktimers/1	21:56:52	1
2487663	99	54	44,8	cyclictest	53	-21	kswapd0	21:40:11	1
2487663	99	54	43,7	cyclictest	0	-21	swapper/1	21:50:12	1
2487663	99	54	42,9	cyclictest	2537394	-21	ps	21:30:38	1
2487662	99	54	47,5	cyclictest	2490270	-21	kworker/u4:11+events_unbound	19:37:12	0
2487662	99	54	46,6	cyclictest	2510716	-21	kworker/u4:5+events_unbound	20:57:20	0
2487662	99	54	42,5	cyclictest	2587538	-21	kworker/u4:1+events_unbound	22:30:02	0
2487662	99	54	36,16	cyclictest	2505215	-21	grep	20:15:36	0
2487662	99	54	21,26	cyclictest	2487641	-21	munin-run	19:10:01	0
2487663	99	53	45,6	cyclictest	2639958	-21	kworker/u4:2+events_unbound	23:41:46	1
2487662	99	53	45,6	cyclictest	2613890	-21	sd-accept	22:57:32	0
2487662	99	53	44,6	cyclictest	0	-21	swapper/0	23:05:29	0
2487663	99	52	45,5	cyclictest	2515826	-21	systemd	20:57:18	1
2487663	99	52	42,8	cyclictest	2669223	-21	gltestperf	00:00:20	1
2487663	99	52	41,8	cyclictest	0	-21	swapper/1	23:10:12	1
2487663	99	52	37,5	cyclictest	2506894	-21	kworker/u4:14+events_unbound	20:23:17	1
2487662	99	52	33,7	cyclictest	2512014	-21	kworker/u4:10+events_unbound	21:35:02	0
2487663	99	51	44,5	cyclictest	2567514	-21	df_abs	22:05:20	1
2487663	99	51	43,6	cyclictest	2509438	-21	kworker/u4:4+events_unbound	21:04:45	1
2487663	99	51	4,33	cyclictest	2590047	-21	ssh	22:30:28	1
2487663	99	51	42,5	cyclictest	27	1	ktimers/1	00:22:09	1
2487663	99	51	37,11	cyclictest	2619981	-21	grep	23:05:02	1
2487663	99	51	35,11	cyclictest	0	-21	swapper/1	22:20:22	1
2487662	99	51	43,6	cyclictest	2510715	-21	kworker/u4:3+events_unbound	20:42:20	0
2487662	99	51	42,7	cyclictest	2662464	-21	kworker/u4:2+events_unbound	00:04:50	0
2487662	99	51	4,11	cyclictest	2647460	-21	ssh	23:35:33	0
2487662	99	51	32,16	cyclictest	0	-21	swapper/0	23:25:21	0
2487663	99	50	43,5	cyclictest	0	-21	swapper/1	00:30:26	1
2487663	99	50	38,8	cyclictest	0	-21	swapper/1	22:10:27	1
2487663	99	50	36,9	cyclictest	0	-21	swapper/1	21:35:16	1
2487662	99	50	42,6	cyclictest	2490259	-21	kworker/u4:10+events_unbound	19:32:11	0
2487663	99	49	42,5	cyclictest	2513285	-21	kworker/u4:13+events_unbound	21:05:02	1
2487663	99	49	41,5	cyclictest	0	-21	swapper/1	00:35:15	1
2487663	99	49	38,8	cyclictest	2528309	-21	kernelversion	21:20:32	1
2487662	99	49	42,5	cyclictest	2534416	-21	kworker/u4:9+events_unbound	21:30:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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