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 Thu Jul 09, 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
3834525	99	3027	3,3021	cyclictest	3901455	-21	kworker/0:2+events	22:49:15	0
3834535	99	2973	13,2957	cyclictest	3880039	-21	kworker/3:1+events	21:50:01	3
3834530	99	2860	14,2840	cyclictest	3847919	-21	kworker/1:1+events	19:50:11	1
3834535	99	2815	13,2798	cyclictest	3863950	-21	kworker/3:2+events	21:05:15	3
3834530	99	2811	13,2794	cyclictest	3878651	-21	kworker/1:1+events	21:25:15	1
3834532	99	2805	13,2788	cyclictest	3870313	-21	kworker/2:2+events	21:16:36	2
3834532	99	2799	13,2782	cyclictest	3837848	-21	kworker/2:0+events	19:44:10	2
3834532	99	2794	13,2777	cyclictest	3907986	-21	kworker/2:1+events	22:55:38	2
3834532	99	2794	12,2779	cyclictest	3837848	-21	kworker/2:0+events	19:26:45	2
3834530	99	2789	13,2772	cyclictest	3873706	-21	kworker/1:0+events	21:13:58	1
3834525	99	2784	12,2768	cyclictest	3909380	-21	kworker/0:1+events	23:04:46	0
3834532	99	2776	13,2761	cyclictest	3907986	-21	kworker/2:1+events	23:10:09	2
3834532	99	2776	13,2759	cyclictest	3880098	-21	kworker/2:0+events	21:34:22	2
3834530	99	2772	10,2758	cyclictest	3849512	-21	kworker/1:0+events	19:57:22	1
3834530	99	2771	13,2754	cyclictest	3839446	-21	kworker/1:1+events	19:21:23	1
3834530	99	2768	10,2754	cyclictest	3844635	-21	kworker/1:2+events	20:09:11	1
3834525	99	2768	13,2751	cyclictest	3860743	-21	kworker/0:1+events	20:34:27	0
3834532	99	2766	12,2750	cyclictest	3870313	-21	kworker/2:2+events	21:01:48	2
3834530	99	2765	13,2748	cyclictest	3915964	-21	kworker/1:2+events	23:27:18	1
3834530	99	2763	13,2746	cyclictest	3862320	-21	kworker/1:1+events	20:41:40	1
3834530	99	2761	13,2743	cyclictest	3832550	-21	kworker/1:0+events	19:48:20	1
3834530	99	2758	11,2743	cyclictest	3868978	-21	kworker/1:1+events	21:02:10	1
3834530	99	2751	11,2737	cyclictest	3920407	-21	kworker/1:0+events	23:33:05	1
3834530	99	2750	10,2736	cyclictest	3867254	-21	kworker/1:2+events	20:49:15	1
3834535	99	2743	13,2726	cyclictest	3935057	-21	kworker/3:2+events	00:38:58	3
3834532	99	2742	13,2725	cyclictest	3870313	-21	kworker/2:2+events	21:20:46	2
3834535	99	2741	13,2723	cyclictest	3847769	-21	kworker/3:0+events	20:07:42	3
3834535	99	2740	12,2724	cyclictest	3898404	-21	kworker/3:2+events	22:32:16	3
3834535	99	2740	12,2724	cyclictest	3868772	-21	kworker/3:0+events	20:59:12	3
3834525	99	2740	13,2723	cyclictest	3880248	-21	kworker/0:2+events	21:58:17	0
3834525	99	2738	13,2721	cyclictest	3934963	-21	kworker/0:2+events	00:18:06	0
3834525	99	2735	9,2722	cyclictest	3888456	-21	kworker/0:0+events	22:05:54	0
3834525	99	2729	12,2713	cyclictest	3878590	-21	kworker/0:1+events	21:30:55	0
3834525	99	2721	12,2705	cyclictest	3932620	-21	kworker/0:1+events	00:13:55	0
3834530	99	2720	8,2707	cyclictest	3857693	-21	kworker/1:1+events	20:22:37	1
3834535	99	2711	12,2695	cyclictest	3851914	-21	kworker/3:1+events	20:10:44	3
3834530	99	2703	12,2687	cyclictest	3888309	-21	kworker/1:0+events	21:54:10	1
3834525	99	2699	10,2685	cyclictest	3860743	-21	kworker/0:1+events	20:58:47	0
3834532	99	2682	14,2666	cyclictest	3853076	-21	kworker/2:1+events	20:10:20	2
3834525	99	2682	12,2667	cyclictest	3918847	-21	kworker/0:2+events	23:33:53	0
3834525	99	2676	12,2662	cyclictest	3920624	-21	kworker/0:0+events	23:35:01	0
3834525	99	2672	10,2658	cyclictest	3846169	-21	kworker/0:1+events	19:43:00	0
3834525	99	2665	12,2649	cyclictest	3918847	-21	kworker/0:2+events	23:29:12	0
3834532	99	2656	10,2644	cyclictest	3849215	-21	kworker/2:1+events	19:55:06	2
3834530	99	2637	8,2625	cyclictest	3909439	-21	kworker/1:2+events	22:57:54	1
3834525	99	2624	11,2609	cyclictest	3903055	-21	kworker/0:1+events	22:41:43	0
3834530	99	2622	13,2605	cyclictest	3906150	-21	kworker/1:1+events	23:11:43	1
3834525	99	2614	12,2598	cyclictest	3852970	-21	kworker/0:1+events	20:13:04	0
3834530	99	2608	12,2592	cyclictest	3907840	-21	kworker/1:0+events	22:53:44	1
3834535	99	2606	13,2591	cyclictest	3855847	-21	kworker/3:2+events	20:25:19	3
3834535	99	2604	11,2589	cyclictest	3849366	-21	kworker/3:2+events	19:56:59	3
3834532	99	2580	12,2564	cyclictest	3857395	-21	kworker/2:0+events	20:30:36	2
3834530	99	2579	12,2563	cyclictest	3938241	-21	kworker/1:1+events	00:39:21	1
3834532	99	2577	12,2561	cyclictest	3890077	-21	kworker/2:2+events	22:20:28	2
3834532	99	2576	12,2560	cyclictest	3837848	-21	kworker/2:0+events	19:21:46	2
3834532	99	2574	12,2558	cyclictest	3870313	-21	kworker/2:2+events	21:10:13	2
3834532	99	2571	12,2556	cyclictest	3920653	-21	kworker/2:1+events	00:05:30	2
3834532	99	2571	11,2557	cyclictest	3938465	-21	kworker/2:1+events	00:33:13	2
3834532	99	2570	12,2554	cyclictest	3923876	-21	kworker/2:0+events	23:45:37	2
3834532	99	2569	7,2559	cyclictest	3912456	-21	kworker/2:0+events	23:28:49	2
3834535	99	2568	12,2552	cyclictest	3851914	-21	kworker/3:1+events	20:03:32	3
3834525	99	2568	12,2554	cyclictest	3852970	-21	kworker/0:1+events	20:15:01	0
3834532	99	2566	12,2550	cyclictest	3920653	-21	kworker/2:1+events	23:55:36	2
3834532	99	2566	11,2551	cyclictest	3868709	-21	kworker/2:0+events	20:54:38	2
3834535	99	2564	13,2547	cyclictest	3911123	-21	kworker/3:2+events	23:07:28	3
3834532	99	2564	12,2548	cyclictest	3890077	-21	kworker/2:2+events	22:47:21	2
3834532	99	2563	12,2548	cyclictest	3853076	-21	kworker/2:1+events	20:19:34	2
3834532	99	2563	11,2549	cyclictest	3880098	-21	kworker/2:0+events	21:46:35	2
3834532	99	2562	12,2547	cyclictest	3935175	-21	kworker/2:2+events	00:24:29	2
3834532	99	2562	12,2546	cyclictest	3920653	-21	kworker/2:1+events	00:19:13	2
3834532	99	2557	12,2541	cyclictest	3863861	-21	kworker/2:0+events	20:39:22	2
3834530	99	2556	11,2541	cyclictest	3862320	-21	kworker/1:1+events	20:35:13	1
3834532	99	2555	12,2540	cyclictest	3890077	-21	kworker/2:2+events	22:44:20	2
3834532	99	2555	12,2539	cyclictest	3887495	-21	kworker/2:1+events	22:09:01	2
3834532	99	2555	11,2541	cyclictest	3844860	-21	kworker/2:2+events	19:50:54	2
3834532	99	2553	11,2538	cyclictest	3859051	-21	kworker/2:2+events	20:46:56	2
3834532	99	2552	12,2537	cyclictest	3919044	-21	kworker/2:2+events	23:31:31	2
3834530	99	2552	12,2536	cyclictest	3849512	-21	kworker/1:0+events	20:04:18	1
3834535	99	2551	12,2535	cyclictest	3906302	-21	kworker/3:0+events	22:57:12	3
3834532	99	2550	11,2535	cyclictest	3842921	-21	kworker/2:1+events	19:39:38	2
3834530	99	2549	12,2533	cyclictest	3876998	-21	kworker/1:2+events	21:19:15	1
3834532	99	2547	12,2531	cyclictest	3890077	-21	kworker/2:2+events	22:38:18	2
3834530	99	2547	11,2532	cyclictest	3938241	-21	kworker/1:1+events	00:30:55	1
3834530	99	2546	12,2530	cyclictest	3914360	-21	kworker/1:0+events	23:17:02	1
3834532	99	2545	13,2528	cyclictest	3890077	-21	kworker/2:2+events	22:12:26	2
3834532	99	2543	11,2528	cyclictest	3880098	-21	kworker/2:0+events	21:50:24	2
3834530	99	2542	8,2530	cyclictest	3923754	-21	kworker/1:1+events	23:54:26	1
3834532	99	2540	12,2525	cyclictest	3899362	-21	kworker/2:0+events	22:30:46	2
3834530	99	2538	8,2526	cyclictest	3832550	-21	kworker/1:0+events	19:41:54	1
3834532	99	2537	12,2521	cyclictest	3870313	-21	kworker/2:2+events	21:06:22	2
3834530	99	2537	12,2521	cyclictest	3920407	-21	kworker/1:0+events	23:36:11	1
3834530	99	2536	12,2521	cyclictest	3906150	-21	kworker/1:1+events	23:03:16	1
3834530	99	2536	12,2521	cyclictest	3878651	-21	kworker/1:1+events	21:37:27	1
3834535	99	2534	12,2519	cyclictest	3863950	-21	kworker/3:2+events	20:39:46	3
3834530	99	2534	12,2520	cyclictest	3868978	-21	kworker/1:1+events	20:55:01	1
3834530	99	2532	12,2518	cyclictest	3906150	-21	kworker/1:1+events	23:07:05	1
3834530	99	2532	12,2516	cyclictest	3842773	-21	kworker/1:1+events	19:37:20	1
3834530	99	2532	10,2518	cyclictest	3873706	-21	kworker/1:0+events	21:23:01	1
3834525	99	2532	12,2516	cyclictest	3938164	-21	kworker/0:2+events	00:29:24	0
3834530	99	2531	12,2515	cyclictest	3891847	-21	kworker/1:1+events	22:11:41	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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