OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails

Click here to display the system's profile data.

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, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackfslot7s.osadl.org (updated Sat Apr 18, 2026 00:44:18)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2654808	99	3407	16,3387	cyclictest	2738069	-21	kworker/2:0+events	23:25:19	2
2654800	99	3084	15,3064	cyclictest	2672787	-21	kworker/0:0+events	20:10:14	0
2654808	99	3031	13,3013	cyclictest	2749481	-21	kworker/2:1+events	00:10:13	2
2654808	99	2858	14,2841	cyclictest	2702547	-21	kworker/2:1+events	21:40:11	2
2654800	99	2838	13,2822	cyclictest	2736039	-21	kworker/0:0+events	23:20:01	0
2654800	99	2800	14,2783	cyclictest	2745903	-21	kworker/0:2+events	00:00:18	0
2654800	99	2795	14,2779	cyclictest	2669201	-21	kworker/0:0+events	19:55:16	0
2654800	99	2795	11,2780	cyclictest	2672787	-21	kworker/0:0+events	20:05:15	0
2654808	99	2765	12,2749	cyclictest	2686202	-21	kworker/2:2+events	20:54:43	2
2654803	99	2691	13,2674	cyclictest	2713501	-21	kworker/1:1+events	22:15:11	1
2654808	99	2681	13,2664	cyclictest	2674706	-21	kworker/2:2+events	20:35:16	2
2654808	99	2664	13,2646	cyclictest	2752723	-21	kworker/2:2+events	00:15:13	2
2654800	99	2647	13,2630	cyclictest	2730048	-21	kworker/0:1+events	23:00:14	0
2654800	99	2644	13,2627	cyclictest	2696193	-21	kworker/0:2+events	21:20:19	0
2654813	99	2636	12,2620	cyclictest	2697654	-21	kworker/3:1+events	21:23:18	3
2654800	99	2632	13,2615	cyclictest	2700815	-21	kworker/0:1+events	21:42:29	0
2654803	99	2620	13,2603	cyclictest	2721723	-21	kworker/1:0+events	22:32:50	1
2654803	99	2593	12,2577	cyclictest	2681475	-21	kworker/1:0+events	20:35:40	1
2654813	99	2582	13,2566	cyclictest	2695876	-21	kworker/3:0+events	21:15:19	3
2654813	99	2579	12,2563	cyclictest	2733116	-21	kworker/3:1+events	23:46:05	3
2654803	99	2579	12,2564	cyclictest	2741497	-21	kworker/1:0+events	23:35:52	1
2654803	99	2578	12,2564	cyclictest	2713501	-21	kworker/1:1+events	22:20:06	1
2654803	99	2577	12,2561	cyclictest	2713501	-21	kworker/1:1+events	22:09:05	1
2654803	99	2576	12,2561	cyclictest	2725393	-21	kworker/1:2+events	22:50:43	1
2654813	99	2574	13,2558	cyclictest	2691472	-21	kworker/3:2+events	21:30:16	3
2654808	99	2569	12,2554	cyclictest	2723830	-21	kworker/2:2+events	22:41:16	2
2654808	99	2569	12,2553	cyclictest	2691277	-21	kworker/2:1+events	20:59:17	2
2654808	99	2567	12,2551	cyclictest	2741259	-21	kworker/2:0+events	23:32:49	2
2654808	99	2566	7,2556	cyclictest	2713590	-21	kworker/2:2+events	22:19:44	2
2654808	99	2563	12,2548	cyclictest	2721930	-21	kworker/2:0+events	22:55:20	2
2654800	99	2562	10,2548	cyclictest	2755693	-21	kworker/0:0+events	00:36:08	0
2654808	99	2545	12,2529	cyclictest	2707493	-21	kworker/2:1+events	21:52:46	2
2654808	99	2541	12,2526	cyclictest	2721930	-21	kworker/2:0+events	22:35:07	2
2654800	99	2537	12,2522	cyclictest	2705714	-21	kworker/0:0+events	21:56:32	0
2654800	99	2536	11,2522	cyclictest	2679838	-21	kworker/0:0+events	20:32:41	0
2654800	99	2535	12,2520	cyclictest	2705714	-21	kworker/0:0+events	21:45:28	0
2654800	99	2535	12,2520	cyclictest	2705714	-21	kworker/0:0+events	21:45:27	0
2654800	99	2533	12,2517	cyclictest	2733325	-21	kworker/0:1+events	23:10:50	0
2654800	99	2532	10,2518	cyclictest	2718535	-21	kworker/0:1+events	22:40:29	0
2654800	99	2531	12,2517	cyclictest	2755693	-21	kworker/0:0+events	00:21:41	0
2654813	99	2527	12,2511	cyclictest	2726930	-21	kworker/3:2+events	22:57:38	3
2654808	99	2527	12,2511	cyclictest	2681950	-21	kworker/2:1+events	20:48:56	2
2654800	99	2521	12,2506	cyclictest	2696193	-21	kworker/0:2+events	21:16:05	0
2654800	99	2521	12,2505	cyclictest	2724833	-21	kworker/0:0+events	23:08:55	0
2654808	99	2518	12,2503	cyclictest	2717063	-21	kworker/2:1+events	22:26:39	2
2654803	99	2510	12,2495	cyclictest	2756088	-21	kworker/1:0+events	00:30:52	1
2654808	99	2502	12,2486	cyclictest	2661306	-21	kworker/2:2+events	19:54:29	2
2654803	99	2501	11,2487	cyclictest	2702486	-21	kworker/1:2+events	22:04:51	1
2654800	99	2501	6,2491	cyclictest	2666296	-21	kworker/0:2+events	19:47:38	0
2654803	99	2500	8,2488	cyclictest	2746023	-21	kworker/1:2+events	00:01:53	1
2654803	99	2499	12,2483	cyclictest	2661338	-21	kworker/1:1+events	19:32:40	1
2654803	99	2498	12,2483	cyclictest	2729810	-21	kworker/1:1+events	23:07:01	1
2654803	99	2497	12,2481	cyclictest	2756088	-21	kworker/1:0+events	00:39:09	1
2654803	99	2497	12,2481	cyclictest	2648033	-21	kworker/1:2+events	19:23:31	1
2654803	99	2496	12,2481	cyclictest	2754146	-21	kworker/1:2+events	00:12:08	1
2654803	99	2496	12,2481	cyclictest	2681475	-21	kworker/1:0+events	20:52:02	1
2654803	99	2496	12,2480	cyclictest	2751539	-21	kworker/1:0+events	00:09:26	1
2654803	99	2496	12,2480	cyclictest	2723648	-21	kworker/1:1+events	22:44:40	1
2654808	99	2495	12,2479	cyclictest	2729990	-21	kworker/2:1+events	23:12:01	2
2654803	99	2495	12,2479	cyclictest	2648033	-21	kworker/1:2+events	19:35:45	1
2654808	99	2494	12,2478	cyclictest	2717063	-21	kworker/2:1+events	22:34:20	2
2654803	99	2494	12,2479	cyclictest	2741497	-21	kworker/1:0+events	23:50:58	1
2654803	99	2494	12,2479	cyclictest	2692899	-21	kworker/1:0+events	21:04:38	1
2654808	99	2493	12,2477	cyclictest	2691277	-21	kworker/2:1+events	21:01:56	2
2654808	99	2492	12,2478	cyclictest	2674706	-21	kworker/2:2+events	20:25:05	2
2654803	99	2491	12,2475	cyclictest	2699839	-21	kworker/1:1+events	21:35:36	1
2654808	99	2490	12,2474	cyclictest	2710308	-21	kworker/2:0+events	22:01:06	2
2654808	99	2489	3,2482	cyclictest	2733297	-21	kworker/2:2+events	23:18:30	2
2654808	99	2489	12,2473	cyclictest	2713590	-21	kworker/2:2+events	22:11:22	2
2654808	99	2489	11,2475	cyclictest	2744927	-21	kworker/2:0+events	23:51:41	2
2654800	99	2489	7,2478	cyclictest	2755693	-21	kworker/0:0+events	00:18:18	0
2654808	99	2488	10,2475	cyclictest	2717063	-21	kworker/2:1+events	22:20:29	2
2654808	99	2487	11,2472	cyclictest	2742922	-21	kworker/2:2+events	23:40:48	2
2654808	99	2486	12,2471	cyclictest	2733297	-21	kworker/2:2+events	23:21:33	2
2654808	99	2486	12,2470	cyclictest	2747557	-21	kworker/2:2+events	23:59:36	2
2654808	99	2486	11,2471	cyclictest	2729990	-21	kworker/2:1+events	23:06:16	2
2654808	99	2485	12,2470	cyclictest	2700935	-21	kworker/2:0+events	21:34:51	2
2654808	99	2485	12,2469	cyclictest	2749481	-21	kworker/2:1+events	00:03:00	2
2654803	99	2485	11,2471	cyclictest	2674479	-21	kworker/1:2+events	20:15:06	1
2654800	99	2485	11,2471	cyclictest	2755693	-21	kworker/0:0+events	00:31:36	0
2654808	99	2484	12,2468	cyclictest	2670896	-21	kworker/2:1+events	20:04:32	2
2654808	99	2484	10,2471	cyclictest	2691277	-21	kworker/2:1+events	21:07:20	2
2654808	99	2484	10,2470	cyclictest	2697471	-21	kworker/2:1+events	21:26:45	2
2654808	99	2482	12,2467	cyclictest	2670896	-21	kworker/2:1+events	19:58:46	2
2654800	99	2482	12,2467	cyclictest	2724833	-21	kworker/0:0+events	22:49:56	0
2654808	99	2481	10,2468	cyclictest	2729990	-21	kworker/2:1+events	23:04:02	2
2654808	99	2480	12,2464	cyclictest	2741259	-21	kworker/2:0+events	23:36:15	2
2654808	99	2480	12,2464	cyclictest	2699081	-21	kworker/2:2+events	21:22:56	2
2654808	99	2480	11,2466	cyclictest	2658114	-21	kworker/2:1+events	19:26:31	2
2654813	99	2478	11,2464	cyclictest	2731521	-21	kworker/3:0+events	23:09:19	3
2654808	99	2478	12,2463	cyclictest	2704182	-21	kworker/2:2+events	21:45:51	2
2654808	99	2478	12,2463	cyclictest	2704182	-21	kworker/2:2+events	21:45:51	2
2654808	99	2478	11,2464	cyclictest	2678450	-21	kworker/2:1+events	20:22:46	2
2654808	99	2477	12,2463	cyclictest	2658114	-21	kworker/2:1+events	19:20:06	2
2654808	99	2477	12,2461	cyclictest	2661306	-21	kworker/2:2+events	19:41:31	2
2654808	99	2477	10,2464	cyclictest	2749481	-21	kworker/2:1+events	00:08:19	2
2654813	99	2475	12,2460	cyclictest	2723219	-21	kworker/3:1+events	22:37:22	3
2654808	99	2473	11,2459	cyclictest	2713590	-21	kworker/2:2+events	22:08:18	2
2654803	99	2470	12,2454	cyclictest	2754146	-21	kworker/1:2+events	00:20:33	1
2654813	99	2465	12,2449	cyclictest	2638700	-21	kworker/3:2+events	19:18:11	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2024-07-29 - 23:00