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 Fri Sep 18, 2026 00:44:17)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3884480	99	3325	15,3305	cyclictest	3938621	-21	kworker/0:0+events	22:15:21	0
3884490	99	3121	15,3101	cyclictest	3986670	-21	kworker/3:0+events	00:29:59	3
3884487	99	2921	15,2904	cyclictest	3953096	-21	kworker/2:2+events	22:45:17	2
3884480	99	2817	13,2797	cyclictest	3895717	-21	kworker/0:1+events	19:45:12	0
3884480	99	2802	13,2785	cyclictest	3961144	-21	kworker/0:1+events	23:09:34	0
3884480	99	2802	13,2785	cyclictest	3961144	-21	kworker/0:1+events	23:09:33	0
3884490	99	2795	13,2778	cyclictest	3975865	-21	kworker/3:2+events	00:00:13	3
3884490	99	2783	11,2768	cyclictest	3919636	-21	kworker/3:1+events	21:04:37	3
3884487	99	2779	13,2763	cyclictest	3946618	-21	kworker/2:2+events	22:35:00	2
3884490	99	2777	10,2763	cyclictest	3953273	-21	kworker/3:1+events	22:43:46	3
3884487	99	2769	11,2755	cyclictest	3973848	-21	kworker/2:1+events	23:50:23	2
3884480	99	2769	13,2752	cyclictest	3936986	-21	kworker/0:2+events	21:55:13	0
3884487	99	2768	12,2752	cyclictest	3966043	-21	kworker/2:2+events	23:26:23	2
3884487	99	2753	12,2739	cyclictest	3988533	-21	kworker/2:0+events	00:35:17	2
3884480	99	2679	6,2670	cyclictest	3948441	-21	kworker/0:2+events	22:50:14	0
3884487	99	2661	10,2647	cyclictest	3954718	-21	kworker/2:1+events	23:03:26	2
3884490	99	2636	13,2620	cyclictest	3981667	-21	kworker/3:1+events	00:13:59	3
3884487	99	2589	12,2573	cyclictest	3972221	-21	kworker/2:0+events	23:42:01	2
3884490	99	2587	12,2571	cyclictest	3970770	-21	kworker/3:1+events	23:55:17	3
3884490	99	2576	12,2560	cyclictest	3914781	-21	kworker/3:0+events	21:15:16	3
3884480	99	2571	11,2556	cyclictest	3892456	-21	kworker/0:2+events	19:33:42	0
3884490	99	2570	12,2555	cyclictest	3970770	-21	kworker/3:1+events	00:05:11	3
3884490	99	2567	11,2553	cyclictest	3970770	-21	kworker/3:1+events	23:53:03	3
3884480	99	2564	12,2548	cyclictest	3879174	-21	kworker/0:1+events	19:20:00	0
3884480	99	2564	12,2548	cyclictest	3879174	-21	kworker/0:1+events	19:20:00	0
3884490	99	2563	12,2547	cyclictest	3906604	-21	kworker/3:1+events	20:30:13	3
3884490	99	2561	11,2546	cyclictest	3914781	-21	kworker/3:0+events	21:21:20	3
3884490	99	2559	12,2543	cyclictest	3953273	-21	kworker/3:1+events	22:48:18	3
3884490	99	2553	12,2537	cyclictest	3983299	-21	kworker/3:2+events	00:22:02	3
3884490	99	2550	12,2535	cyclictest	3983299	-21	kworker/3:2+events	00:33:46	3
3884490	99	2550	12,2534	cyclictest	3959751	-21	kworker/3:0+events	23:05:23	3
3884490	99	2550	12,2534	cyclictest	3959751	-21	kworker/3:0+events	23:05:23	3
3884480	99	2550	10,2537	cyclictest	3901151	-21	kworker/0:1+events	20:05:21	0
3884480	99	2550	10,2536	cyclictest	3980034	-21	kworker/0:0+events	00:18:08	0
3884490	99	2549	11,2535	cyclictest	3906604	-21	kworker/3:1+events	20:18:05	3
3884490	99	2548	12,2532	cyclictest	3969109	-21	kworker/3:0+events	23:34:22	3
3884480	99	2546	12,2530	cyclictest	3967755	-21	kworker/0:3+events	23:30:57	0
3884487	99	2542	10,2529	cyclictest	3978788	-21	kworker/2:0+events	00:14:45	2
3884487	99	2542	10,2528	cyclictest	3943401	-21	kworker/2:1+events	22:40:20	2
3884480	99	2538	10,2524	cyclictest	3938621	-21	kworker/0:0+events	22:04:20	0
3884480	99	2537	12,2522	cyclictest	3959533	-21	kworker/0:2+events	23:11:53	0
3884480	99	2537	12,2521	cyclictest	3962816	-21	kworker/0:0+events	23:16:51	0
3884487	99	2535	12,2519	cyclictest	3911573	-21	kworker/2:2+events	20:54:22	2
3884480	99	2535	12,2519	cyclictest	3897380	-21	kworker/0:2+events	20:03:05	0
3884480	99	2534	8,2523	cyclictest	3887557	-21	kworker/0:2+events	19:23:47	0
3884480	99	2534	11,2519	cyclictest	3917747	-21	kworker/0:2+events	20:57:23	0
3884480	99	2533	8,2522	cyclictest	3967755	-21	kworker/0:3+events	23:35:55	0
3884480	99	2532	11,2518	cyclictest	3972126	-21	kworker/0:1+events	23:42:24	0
3884487	99	2531	10,2520	cyclictest	3943401	-21	kworker/2:1+events	22:36:09	2
3884480	99	2531	12,2517	cyclictest	3938621	-21	kworker/0:0+events	22:11:35	0
3884487	99	2530	8,2519	cyclictest	3905088	-21	kworker/2:0+events	20:15:30	2
3884487	99	2528	8,2516	cyclictest	3932467	-21	kworker/2:2+events	21:49:28	2
3884487	99	2528	12,2512	cyclictest	3954718	-21	kworker/2:1+events	23:09:57	2
3884487	99	2528	12,2512	cyclictest	3954718	-21	kworker/2:1+events	23:09:57	2
3884487	99	2526	12,2511	cyclictest	3954718	-21	kworker/2:1+events	23:20:41	2
3884487	99	2526	11,2512	cyclictest	3941188	-21	kworker/2:2+events	22:15:44	2
3884480	99	2524	12,2508	cyclictest	3945785	-21	kworker/0:1+events	22:27:03	0
3884487	99	2523	12,2508	cyclictest	3877788	-21	kworker/2:0+events	19:14:17	2
3884490	99	2522	12,2506	cyclictest	3897323	-21	kworker/3:1+events	19:53:10	3
3884480	99	2519	12,2503	cyclictest	3934134	-21	kworker/0:0+events	21:45:16	0
3884487	99	2517	12,2501	cyclictest	3909979	-21	kworker/2:0+events	20:35:34	2
3884480	99	2514	12,2498	cyclictest	3903384	-21	kworker/0:0+events	20:34:02	0
3884480	99	2513	12,2497	cyclictest	3925922	-21	kworker/0:0+events	21:17:32	0
3884490	99	2512	12,2498	cyclictest	3900572	-21	kworker/3:1+events	20:10:14	3
3884480	99	2512	12,2496	cyclictest	3938621	-21	kworker/0:0+events	22:20:14	0
3884490	99	2510	12,2494	cyclictest	3954875	-21	kworker/3:2+events	23:20:17	3
3884487	99	2510	12,2495	cyclictest	3946618	-21	kworker/2:2+events	22:28:35	2
3884490	99	2508	12,2492	cyclictest	3986670	-21	kworker/3:0+events	00:36:04	3
3884480	99	2507	11,2492	cyclictest	3945785	-21	kworker/0:1+events	22:32:01	0
3884487	99	2506	12,2490	cyclictest	3926010	-21	kworker/2:2+events	21:20:57	2
3884487	99	2505	11,2490	cyclictest	3892587	-21	kworker/2:1+events	19:52:48	2
3884487	99	2494	12,2477	cyclictest	3982924	-21	kworker/2:1+events	00:16:17	2
3884490	99	2493	11,2478	cyclictest	3924461	-21	kworker/3:1+events	21:14:08	3
3884490	99	2492	12,2477	cyclictest	3983299	-21	kworker/3:2+events	00:17:46	3
3884490	99	2492	12,2477	cyclictest	3894030	-21	kworker/3:2+events	19:57:23	3
3884490	99	2491	12,2475	cyclictest	3969109	-21	kworker/3:0+events	23:43:08	3
3884480	99	2491	12,2476	cyclictest	3948441	-21	kworker/0:2+events	22:44:31	0
3884490	99	2489	12,2474	cyclictest	3967438	-21	kworker/3:2+events	23:27:53	3
3884490	99	2489	10,2475	cyclictest	3938650	-21	kworker/3:0+events	21:59:02	3
3884480	99	2489	9,2476	cyclictest	3889215	-21	kworker/0:0+events	19:27:12	0
3884480	99	2488	12,2472	cyclictest	3981728	-21	kworker/0:1+events	00:13:12	0
3884490	99	2487	10,2474	cyclictest	3906604	-21	kworker/3:1+events	20:27:12	3
3884480	99	2486	12,2471	cyclictest	3940451	-21	kworker/0:2+events	22:09:17	0
3884480	99	2485	11,2471	cyclictest	3987446	-21	kworker/0:1+events	00:34:09	0
3884490	99	2484	12,2470	cyclictest	3940296	-21	kworker/3:2+events	22:05:06	3
3884480	99	2484	12,2468	cyclictest	3929209	-21	kworker/0:1+events	21:40:42	0
3884480	99	2483	13,2467	cyclictest	3980034	-21	kworker/0:0+events	00:27:46	0
3884490	99	2481	12,2465	cyclictest	3954875	-21	kworker/3:2+events	23:17:36	3
3884490	99	2481	11,2466	cyclictest	3954875	-21	kworker/3:2+events	22:53:37	3
3884480	99	2479	9,2466	cyclictest	3929209	-21	kworker/0:1+events	21:35:20	0
3884480	99	2478	12,2462	cyclictest	3957839	-21	kworker/0:0+events	23:01:56	0
3884490	99	2477	12,2461	cyclictest	3927730	-21	kworker/3:1+events	21:53:19	3
3884490	99	2475	12,2460	cyclictest	3898922	-21	kworker/3:0+events	20:02:20	3
3884490	99	2475	11,2461	cyclictest	3954875	-21	kworker/3:2+events	22:57:00	3
3884487	99	2474	12,2458	cyclictest	3905088	-21	kworker/2:0+events	20:21:35	2
3884490	99	2473	12,2457	cyclictest	3935410	-21	kworker/3:0+events	21:48:19	3
3884490	99	2473	11,2458	cyclictest	3909858	-21	kworker/3:2+events	20:41:39	3
3884490	99	2472	11,2457	cyclictest	3940296	-21	kworker/3:2+events	22:21:46	3
3884490	99	2471	12,2457	cyclictest	3909858	-21	kworker/3:2+events	20:35:10	3
3884490	99	2468	12,2452	cyclictest	3914781	-21	kworker/3:0+events	20:56:36	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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