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 Sun Apr 19, 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
3130986	99	3301	14,3281	cyclictest	3148356	-21	kworker/0:0+events	20:15:16	0
3130997	99	3133	12,3117	cyclictest	3225401	-21	kworker/3:1+events	00:05:20	3
3130995	99	3018	15,2997	cyclictest	3215857	-21	kworker/2:1+events	23:35:15	2
3130986	99	2927	13,2909	cyclictest	3198185	-21	kworker/0:2+events	22:45:01	0
3130997	99	2849	13,2832	cyclictest	3153321	-21	kworker/3:2+events	20:20:14	3
3130991	99	2848	13,2831	cyclictest	3228583	-21	kworker/1:1+events	00:15:17	1
3130997	99	2828	14,2812	cyclictest	3207977	-21	kworker/3:2+events	23:25:19	3
3130995	99	2821	7,2808	cyclictest	3217459	-21	kworker/2:0+events	23:40:12	2
3130995	99	2821	7,2808	cyclictest	3217459	-21	kworker/2:0+events	23:40:11	2
3130986	99	2803	13,2786	cyclictest	3207765	-21	kworker/0:2+events	23:13:36	0
3130995	99	2783	11,2768	cyclictest	3204364	-21	kworker/2:1+events	23:00:17	2
3130991	99	2778	13,2762	cyclictest	3199674	-21	kworker/1:0+events	22:55:17	1
3130997	99	2772	11,2758	cyclictest	3175834	-21	kworker/3:0+events	22:21:47	3
3130995	99	2762	12,2745	cyclictest	3202759	-21	kworker/2:0+events	23:05:16	2
3130986	99	2759	13,2742	cyclictest	3230248	-21	kworker/0:2+events	00:20:16	0
3130991	99	2751	13,2734	cyclictest	3137398	-21	kworker/1:2+events	19:35:15	1
3130995	99	2734	13,2717	cyclictest	3174144	-21	kworker/2:2+events	21:26:13	2
3130991	99	2721	13,2706	cyclictest	3188288	-21	kworker/1:1+events	22:47:17	1
3130995	99	2708	11,2693	cyclictest	3137547	-21	kworker/2:0+events	19:40:13	2
3130986	99	2702	13,2686	cyclictest	3223956	-21	kworker/0:0+events	00:00:21	0
3130997	99	2659	10,2645	cyclictest	3199822	-21	kworker/3:1+events	22:45:21	3
3130986	99	2628	13,2611	cyclictest	3191730	-21	kworker/0:2+events	22:33:17	0
3130997	99	2581	12,2565	cyclictest	3186653	-21	kworker/3:1+events	22:05:24	3
3130986	99	2581	11,2566	cyclictest	3139003	-21	kworker/0:2+events	19:42:30	0
3130995	99	2578	12,2562	cyclictest	3220844	-21	kworker/2:1+events	23:53:56	2
3130995	99	2552	12,2536	cyclictest	3169297	-21	kworker/2:1+events	21:12:23	2
3130997	99	2548	12,2533	cyclictest	3175834	-21	kworker/3:0+events	22:10:21	3
3130997	99	2538	12,2522	cyclictest	3160075	-21	kworker/3:1+events	20:46:53	3
3130995	99	2538	12,2522	cyclictest	3161473	-21	kworker/2:0+events	20:56:00	2
3130997	99	2537	11,2522	cyclictest	3155065	-21	kworker/3:0+events	20:26:43	3
3130995	99	2537	8,2526	cyclictest	3179071	-21	kworker/2:1+events	22:00:02	2
3130995	99	2536	10,2522	cyclictest	3146989	-21	kworker/2:2+events	19:59:45	2
3130997	99	2534	12,2518	cyclictest	3160075	-21	kworker/3:1+events	21:00:33	3
3130997	99	2534	11,2519	cyclictest	3183569	-21	kworker/3:2+events	21:54:43	3
3130997	99	2532	11,2518	cyclictest	3130325	-21	kworker/3:2+events	19:14:43	3
3130995	99	2531	8,2519	cyclictest	3211152	-21	kworker/2:0+events	23:29:06	2
3130995	99	2530	10,2517	cyclictest	3193178	-21	kworker/2:2+events	22:31:24	2
3130995	99	2527	12,2511	cyclictest	3179071	-21	kworker/2:1+events	21:52:22	2
3130997	99	2525	11,2510	cyclictest	3150239	-21	kworker/3:1+events	20:15:39	3
3130997	99	2523	12,2508	cyclictest	3150239	-21	kworker/3:1+events	20:10:42	3
3130997	99	2522	8,2510	cyclictest	3145547	-21	kworker/3:3+events	20:01:17	3
3130997	99	2513	12,2497	cyclictest	3222537	-21	kworker/3:0+events	23:56:15	3
3130995	99	2507	7,2496	cyclictest	3201125	-21	kworker/2:2+events	22:51:51	2
3130991	99	2503	12,2488	cyclictest	3151805	-21	kworker/1:2+events	20:28:59	1
3130997	99	2502	12,2487	cyclictest	3228610	-21	kworker/3:1+events	00:16:49	3
3130991	99	2501	11,2486	cyclictest	3211062	-21	kworker/1:2+events	23:23:49	1
3130991	99	2501	11,2486	cyclictest	3211062	-21	kworker/1:2+events	23:23:48	1
3130995	99	2497	12,2482	cyclictest	3228696	-21	kworker/2:0+events	00:16:27	2
3130991	99	2494	9,2482	cyclictest	3199674	-21	kworker/1:0+events	23:01:28	1
3130986	99	2494	12,2479	cyclictest	3148356	-21	kworker/0:0+events	20:21:23	0
3130986	99	2492	12,2476	cyclictest	3142347	-21	kworker/0:1+events	20:05:47	0
3130991	99	2490	12,2473	cyclictest	3145474	-21	kworker/1:0+events	20:01:38	1
3130991	99	2489	12,2473	cyclictest	3164589	-21	kworker/1:2+events	21:05:26	1
3130997	99	2488	12,2472	cyclictest	3160075	-21	kworker/3:1+events	20:58:39	3
3130997	99	2488	11,2473	cyclictest	3205964	-21	kworker/3:1+events	23:09:24	3
3130986	99	2488	8,2476	cyclictest	3169478	-21	kworker/0:2+events	21:34:57	0
3130986	99	2488	5,2479	cyclictest	3169478	-21	kworker/0:2+events	21:13:31	0
3130986	99	2488	12,2472	cyclictest	3158338	-21	kworker/0:1+events	20:35:51	0
3130986	99	2488	10,2474	cyclictest	3153743	-21	kworker/0:2+events	20:44:12	0
3130997	99	2487	12,2472	cyclictest	3212627	-21	kworker/3:1+events	23:31:24	3
3130991	99	2487	12,2473	cyclictest	3199674	-21	kworker/1:0+events	23:10:10	1
3130986	99	2487	12,2471	cyclictest	3207765	-21	kworker/0:2+events	23:16:35	0
3130995	99	2486	12,2472	cyclictest	3146989	-21	kworker/2:2+events	20:40:04	2
3130991	99	2483	12,2467	cyclictest	3149201	-21	kworker/1:1+events	20:08:02	1
3130986	99	2483	12,2469	cyclictest	3139003	-21	kworker/0:2+events	19:45:07	0
3130986	99	2482	11,2468	cyclictest	3220747	-21	kworker/0:0+events	23:51:17	0
3130991	99	2481	3,2474	cyclictest	3193237	-21	kworker/1:2+events	22:25:14	1
3130991	99	2478	11,2463	cyclictest	3134136	-21	kworker/1:0+events	19:24:39	1
3130991	99	2477	12,2462	cyclictest	3188288	-21	kworker/1:1+events	22:40:31	1
3130986	99	2476	11,2461	cyclictest	3177109	-21	kworker/0:0+events	21:39:52	0
3130991	99	2472	9,2460	cyclictest	3211062	-21	kworker/1:2+events	23:51:40	1
3130997	99	2470	12,2455	cyclictest	3228610	-21	kworker/3:1+events	00:14:05	3
3130991	99	2469	12,2454	cyclictest	3137398	-21	kworker/1:2+events	19:29:10	1
3130991	99	2468	11,2453	cyclictest	3145474	-21	kworker/1:0+events	20:11:27	1
3130995	99	2465	12,2450	cyclictest	3231948	-21	kworker/2:1+events	00:25:14	2
3130986	99	2462	10,2448	cyclictest	3186923	-21	kworker/0:1+events	22:17:37	0
3130991	99	2461	12,2446	cyclictest	3179275	-21	kworker/1:2+events	21:50:30	1
3130997	99	2459	9,2446	cyclictest	3175834	-21	kworker/3:0+events	22:18:01	3
3130997	99	2456	12,2441	cyclictest	3230213	-21	kworker/3:2+events	00:20:39	3
3130995	99	2455	10,2441	cyclictest	3215857	-21	kworker/2:1+events	23:32:34	2
3130991	99	2455	12,2440	cyclictest	3159727	-21	kworker/1:2+events	20:43:49	1
3130997	99	2453	12,2437	cyclictest	3136011	-21	kworker/3:0+events	19:32:38	3
3130991	99	2453	12,2438	cyclictest	3134136	-21	kworker/1:0+events	19:18:12	1
3130986	99	2453	12,2438	cyclictest	3194996	-21	kworker/0:1+events	22:35:34	0
3130997	99	2452	12,2436	cyclictest	3215917	-21	kworker/3:0+events	23:37:12	3
3130997	99	2452	12,2436	cyclictest	3167875	-21	kworker/3:0+events	21:16:38	3
3130997	99	2452	11,2437	cyclictest	3228610	-21	kworker/3:1+events	00:26:02	3
3130997	99	2451	12,2436	cyclictest	3175834	-21	kworker/3:0+events	22:25:37	3
3130997	99	2451	12,2435	cyclictest	3175834	-21	kworker/3:0+events	22:01:33	3
3130997	99	2451	10,2437	cyclictest	3205964	-21	kworker/3:1+events	23:14:19	3
3130995	99	2451	12,2435	cyclictest	3233551	-21	kworker/2:0+events	00:39:57	2
3130997	99	2450	10,2437	cyclictest	3233756	-21	kworker/3:2+events	00:36:51	3
3130995	99	2450	11,2435	cyclictest	3161473	-21	kworker/2:0+events	21:03:59	2
3130986	99	2450	12,2434	cyclictest	3162835	-21	kworker/0:1+events	20:56:44	0
3130997	99	2449	12,2433	cyclictest	3170753	-21	kworker/3:2+events	21:13:55	3
3130997	99	2448	12,2433	cyclictest	3199822	-21	kworker/3:1+events	22:51:29	3
3130997	99	2448	12,2432	cyclictest	3167875	-21	kworker/3:0+events	21:06:14	3
3130995	99	2448	12,2433	cyclictest	3186893	-21	kworker/2:0+events	22:14:58	2
3130995	99	2448	11,2434	cyclictest	3175746	-21	kworker/2:0+events	21:40:37	2
3130995	99	2448	11,2434	cyclictest	3175746	-21	kworker/2:0+events	21:40:36	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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