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 Jun 11, 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
3125169	99	3160	15,3140	cyclictest	3207091	-21	kworker/2:1+events	23:30:16	2
3125163	99	2968	14,2950	cyclictest	3128202	-21	kworker/0:0+events	19:30:14	0
3125169	99	2804	13,2787	cyclictest	3199489	-21	kworker/2:2+events	23:20:16	2
3125169	99	2789	10,2775	cyclictest	3141182	-21	kworker/2:1+events	20:40:18	2
3125169	99	2789	10,2775	cyclictest	3141182	-21	kworker/2:1+events	20:40:17	2
3125165	99	2737	12,2721	cyclictest	3207060	-21	kworker/1:1+events	23:40:14	1
3125169	99	2710	13,2693	cyclictest	3207091	-21	kworker/2:1+events	23:39:09	2
3125169	99	2676	13,2659	cyclictest	3221531	-21	kworker/2:2+events	00:19:39	2
3125165	99	2669	13,2652	cyclictest	3157283	-21	kworker/1:2+events	20:51:34	1
3125169	99	2667	13,2649	cyclictest	3141182	-21	kworker/2:1+events	20:05:16	2
3125163	99	2652	11,2637	cyclictest	3173027	-21	kworker/0:2+events	21:45:13	0
3125169	99	2650	13,2633	cyclictest	3213502	-21	kworker/2:2+events	23:50:11	2
3125163	99	2649	11,2633	cyclictest	3205526	-21	kworker/0:1+events	23:25:14	0
3125173	99	2541	9,2529	cyclictest	3176271	-21	kworker/3:0+events	22:02:36	3
3125173	99	2541	10,2528	cyclictest	3131605	-21	kworker/3:0+events	19:51:10	3
3125173	99	2540	12,2526	cyclictest	3147020	-21	kworker/3:2+events	20:20:06	3
3125173	99	2538	12,2522	cyclictest	3168576	-21	kworker/3:0+events	21:35:27	3
3125169	99	2530	12,2514	cyclictest	3194061	-21	kworker/2:0+events	22:46:32	2
3125169	99	2528	12,2514	cyclictest	3160578	-21	kworker/2:0+events	21:05:15	2
3125169	99	2520	12,2506	cyclictest	3170011	-21	kworker/2:1+events	21:40:21	2
3125163	99	2513	11,2498	cyclictest	3197153	-21	kworker/0:0+events	22:56:08	0
3125163	99	2507	12,2491	cyclictest	3159123	-21	kworker/0:2+events	20:57:41	0
3125173	99	2504	12,2489	cyclictest	3165346	-21	kworker/3:1+events	21:20:35	3
3125173	99	2500	0,2496	cyclictest	3203768	-21	kworker/3:1+events	23:16:50	3
3125169	99	2499	12,2484	cyclictest	3184170	-21	kworker/2:0+events	22:25:12	2
3125173	99	2497	12,2481	cyclictest	3155925	-21	kworker/3:0+events	20:57:17	3
3125173	99	2495	12,2480	cyclictest	3195483	-21	kworker/3:1+events	22:54:37	3
3125173	99	2491	11,2476	cyclictest	3149057	-21	kworker/3:0+events	20:27:19	3
3125173	99	2488	12,2472	cyclictest	3222989	-21	kworker/3:2+events	00:25:46	3
3125173	99	2488	12,2472	cyclictest	3218158	-21	kworker/3:0+events	23:57:05	3
3125173	99	2487	9,2475	cyclictest	3199049	-21	kworker/3:3+events	23:03:01	3
3125173	99	2486	12,2471	cyclictest	3187268	-21	kworker/3:0+events	22:32:23	3
3125173	99	2485	12,2470	cyclictest	3205613	-21	kworker/3:2+events	23:32:13	3
3125173	99	2484	12,2469	cyclictest	3184438	-21	kworker/3:1+events	22:20:42	3
3125173	99	2482	4,2474	cyclictest	3208626	-21	kworker/3:0+events	23:29:53	3
3125173	99	2482	12,2467	cyclictest	3203768	-21	kworker/3:1+events	23:23:22	3
3125173	99	2481	12,2465	cyclictest	3222989	-21	kworker/3:2+events	00:35:17	3
3125173	99	2476	11,2462	cyclictest	3177905	-21	kworker/3:2+events	21:53:34	3
3125165	99	2474	12,2458	cyclictest	3152851	-21	kworker/1:1+events	20:38:45	1
3125173	99	2472	12,2456	cyclictest	3149057	-21	kworker/3:0+events	20:37:14	3
3125165	99	2472	12,2456	cyclictest	3191012	-21	kworker/1:2+events	23:06:51	1
3125165	99	2472	12,2456	cyclictest	3136320	-21	kworker/1:2+events	20:02:13	1
3125173	99	2470	11,2456	cyclictest	3151008	-21	kworker/3:2+events	20:44:26	3
3125173	99	2470	11,2456	cyclictest	3151008	-21	kworker/3:2+events	20:44:26	3
3125169	99	2467	6,2458	cyclictest	3218126	-21	kworker/2:1+events	00:12:43	2
3125169	99	2462	12,2448	cyclictest	3197363	-21	kworker/2:1+events	23:00:18	2
3125173	99	2461	12,2445	cyclictest	3187268	-21	kworker/3:0+events	22:49:38	3
3125169	99	2461	11,2447	cyclictest	3202190	-21	kworker/2:0+events	23:12:14	2
3125163	99	2459	12,2443	cyclictest	3134814	-21	kworker/0:0+events	19:51:34	0
3125173	99	2457	9,2444	cyclictest	3193419	-21	kworker/3:2+events	22:42:20	3
3125173	99	2457	9,2444	cyclictest	3193419	-21	kworker/3:2+events	22:42:20	3
3125173	99	2457	12,2442	cyclictest	3163681	-21	kworker/3:2+events	21:09:07	3
3125173	99	2454	11,2439	cyclictest	3136289	-21	kworker/3:1+events	19:43:35	3
3125173	99	2452	12,2437	cyclictest	3202040	-21	kworker/3:0+events	23:12:37	3
3125173	99	2451	12,2435	cyclictest	3144680	-21	kworker/3:0+events	20:14:18	3
3125173	99	2450	11,2435	cyclictest	3124691	-21	kworker/3:2+events	19:27:12	3
3125169	99	2447	9,2435	cyclictest	3165703	-21	kworker/2:0+events	21:27:26	2
3125169	99	2446	10,2433	cyclictest	3130393	-21	kworker/2:2+events	19:36:18	2
3125169	99	2445	12,2430	cyclictest	3152793	-21	kworker/2:0+events	20:36:06	2
3125173	99	2443	12,2427	cyclictest	3195483	-21	kworker/3:1+events	22:59:10	3
3125173	99	2441	11,2428	cyclictest	3181104	-21	kworker/3:2+events	22:15:05	3
3125173	99	2441	10,2428	cyclictest	3174647	-21	kworker/3:2+events	21:41:49	3
3125169	99	2440	11,2425	cyclictest	3221531	-21	kworker/2:2+events	00:21:12	2
3125173	99	2439	10,2426	cyclictest	3215253	-21	kworker/3:1+events	00:11:10	3
3125165	99	2436	9,2424	cyclictest	3191012	-21	kworker/1:2+events	22:42:41	1
3125165	99	2436	9,2424	cyclictest	3191012	-21	kworker/1:2+events	22:42:41	1
3125169	99	2435	12,2420	cyclictest	3157252	-21	kworker/2:0+events	20:47:24	2
3125169	99	2434	11,2419	cyclictest	3199489	-21	kworker/2:2+events	23:09:08	2
3125169	99	2434	10,2420	cyclictest	3176212	-21	kworker/2:2+events	21:57:19	2
3125165	99	2434	12,2418	cyclictest	3155687	-21	kworker/1:0+events	20:42:55	1
3125165	99	2434	12,2418	cyclictest	3155687	-21	kworker/1:0+events	20:42:55	1
3125169	99	2433	12,2417	cyclictest	3176212	-21	kworker/2:2+events	22:02:14	2
3125163	99	2432	10,2418	cyclictest	3140917	-21	kworker/0:2+events	19:57:17	0
3125169	99	2430	12,2414	cyclictest	3137947	-21	kworker/2:2+events	19:51:56	2
3125169	99	2430	11,2415	cyclictest	3134572	-21	kworker/2:0+events	19:42:24	2
3125173	99	2429	12,2413	cyclictest	3143007	-21	kworker/3:1+events	20:17:46	3
3125169	99	2429	12,2414	cyclictest	3207091	-21	kworker/2:1+events	23:42:11	2
3125169	99	2429	10,2415	cyclictest	3170011	-21	kworker/2:1+events	21:45:59	2
3125169	99	2428	12,2413	cyclictest	3154655	-21	kworker/2:2+events	20:50:26	2
3125169	99	2427	12,2412	cyclictest	3141182	-21	kworker/2:1+events	20:15:50	2
3125169	99	2427	12,2411	cyclictest	3181063	-21	kworker/2:1+events	22:08:57	2
3125169	99	2425	11,2411	cyclictest	3187702	-21	kworker/2:1+events	22:30:36	2
3125165	99	2425	10,2411	cyclictest	3184287	-21	kworker/1:1+events	22:22:10	1
3125173	99	2424	12,2409	cyclictest	3155925	-21	kworker/3:0+events	21:17:30	3
3125169	99	2424	12,2409	cyclictest	3224841	-21	kworker/2:1+events	00:30:44	2
3125169	99	2424	12,2409	cyclictest	3213502	-21	kworker/2:2+events	23:58:14	2
3125169	99	2424	11,2409	cyclictest	3168429	-21	kworker/2:2+events	21:23:14	2
3125169	99	2423	12,2407	cyclictest	3154655	-21	kworker/2:2+events	20:58:26	2
3125169	99	2423	12,2407	cyclictest	3139552	-21	kworker/2:0+events	19:59:53	2
3125169	99	2423	12,2407	cyclictest	3121491	-21	kworker/2:0+events	19:20:00	2
3125169	99	2421	12,2405	cyclictest	3130393	-21	kworker/2:2+events	19:30:59	2
3125169	99	2419	9,2407	cyclictest	3130393	-21	kworker/2:2+events	19:26:48	2
3125169	99	2419	11,2404	cyclictest	3163833	-21	kworker/2:1+events	21:13:18	2
3125173	99	2417	10,2404	cyclictest	3157554	-21	kworker/3:1+events	20:52:19	3
3125169	99	2411	12,2396	cyclictest	3218126	-21	kworker/2:1+events	00:05:26	2
3125165	99	2407	12,2391	cyclictest	3147639	-21	kworker/1:0+events	20:22:23	1
3125163	99	2405	10,2391	cyclictest	3144401	-21	kworker/0:2+events	20:14:41	0
3125163	99	2404	11,2390	cyclictest	3215284	-21	kworker/0:0+events	23:50:56	0
3125165	99	2401	12,2385	cyclictest	3124890	-21	kworker/1:2+events	19:32:51	1
3125163	99	2401	9,2389	cyclictest	3218610	-21	kworker/0:3+events	00:08:05	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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