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 Tue Mar 31, 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
2498779	99	3996	18,3968	cyclictest	2527714	-21	kworker/1:2+events	20:40:18	1
2498776	99	3338	16,3319	cyclictest	2596117	-21	kworker/0:1+events	00:15:17	0
2498776	99	3316	17,3295	cyclictest	2594039	-21	kworker/0:2+events	00:10:17	0
2498776	99	2840	13,2823	cyclictest	2517996	-21	kworker/0:0+events	20:15:17	0
2498779	99	2714	13,2698	cyclictest	2556643	-21	kworker/1:2+events	22:20:19	1
2498781	99	2708	13,2691	cyclictest	2530981	-21	kworker/2:2+events	20:53:17	2
2498779	99	2706	13,2689	cyclictest	2526056	-21	kworker/1:0+events	20:35:19	1
2498776	99	2681	13,2664	cyclictest	2551634	-21	kworker/0:1+events	22:10:17	0
2498776	99	2668	12,2651	cyclictest	2566448	-21	kworker/0:2+events	22:45:15	0
2498779	99	2661	13,2644	cyclictest	2556643	-21	kworker/1:2+events	22:30:17	1
2498786	99	2660	12,2644	cyclictest	2516301	-21	kworker/3:1+events	20:05:18	3
2498781	99	2629	12,2614	cyclictest	2551868	-21	kworker/2:0+events	21:55:18	2
2498779	99	2546	2,2540	cyclictest	2579296	-21	kworker/1:0+events	23:36:46	1
2498779	99	2516	11,2501	cyclictest	2524422	-21	kworker/1:1+events	20:33:28	1
2498776	99	2488	12,2472	cyclictest	2516332	-21	kworker/0:1+events	20:07:57	0
2498779	99	2469	12,2454	cyclictest	2556643	-21	kworker/1:2+events	22:25:21	1
2498776	99	2467	11,2452	cyclictest	2598193	-21	kworker/0:0+events	00:22:06	0
2498779	99	2455	12,2441	cyclictest	2572274	-21	kworker/1:2+events	23:05:21	1
2498781	99	2448	12,2432	cyclictest	2527657	-21	kworker/2:2+events	20:41:28	2
2498786	99	2445	12,2430	cyclictest	2583800	-21	kworker/3:1+events	23:45:14	3
2498786	99	2443	12,2427	cyclictest	2577368	-21	kworker/3:1+events	23:15:28	3
2498781	99	2440	11,2425	cyclictest	2522762	-21	kworker/2:1+events	20:55:14	2
2498781	99	2423	12,2408	cyclictest	2561460	-21	kworker/2:1+events	22:59:41	2
2498781	99	2421	12,2406	cyclictest	2508410	-21	kworker/2:1+events	19:48:38	2
2498779	99	2419	12,2405	cyclictest	2527714	-21	kworker/1:2+events	21:00:15	1
2498779	99	2417	12,2403	cyclictest	2533790	-21	kworker/1:0+events	21:05:58	1
2498781	99	2416	12,2400	cyclictest	2535465	-21	kworker/2:1+events	21:11:18	2
2498786	99	2409	12,2393	cyclictest	2524391	-21	kworker/3:0+events	20:38:24	3
2498781	99	2407	12,2392	cyclictest	2556613	-21	kworker/2:2+events	22:08:43	2
2498781	99	2403	10,2389	cyclictest	2561460	-21	kworker/2:1+events	22:40:38	2
2498781	99	2402	9,2390	cyclictest	2500188	-21	kworker/2:2+events	19:25:46	2
2498781	99	2402	12,2387	cyclictest	2564603	-21	kworker/2:2+events	22:35:14	2
2498781	99	2401	10,2388	cyclictest	2540624	-21	kworker/2:1+events	21:37:14	2
2498781	99	2400	12,2384	cyclictest	2585278	-21	kworker/2:0+events	00:18:15	2
2498779	99	2399	12,2383	cyclictest	2518059	-21	kworker/1:1+events	20:14:09	1
2498781	99	2398	10,2384	cyclictest	2535465	-21	kworker/2:1+events	21:07:32	2
2498781	99	2397	12,2381	cyclictest	2590342	-21	kworker/2:2+events	23:59:11	2
2498786	99	2396	10,2384	cyclictest	2529456	-21	kworker/3:2+events	20:55:59	3
2498781	99	2396	12,2381	cyclictest	2579252	-21	kworker/2:2+events	23:39:29	2
2498781	99	2395	12,2380	cyclictest	2551868	-21	kworker/2:0+events	22:01:48	2
2498781	99	2395	12,2380	cyclictest	2551868	-21	kworker/2:0+events	22:01:48	2
2498781	99	2395	12,2379	cyclictest	2569646	-21	kworker/2:0+events	22:53:34	2
2498786	99	2394	12,2379	cyclictest	2537422	-21	kworker/3:1+events	21:32:15	3
2498781	99	2394	12,2379	cyclictest	2522762	-21	kworker/2:1+events	20:47:39	2
2498781	99	2394	11,2379	cyclictest	2558253	-21	kworker/2:0+events	22:19:34	2
2498779	99	2389	12,2374	cyclictest	2574293	-21	kworker/1:0+events	23:13:15	1
2498779	99	2389	12,2373	cyclictest	2585402	-21	kworker/1:1+events	23:41:50	1
2498776	99	2389	12,2373	cyclictest	2572550	-21	kworker/0:0+events	23:18:09	0
2498779	99	2388	12,2372	cyclictest	2543667	-21	kworker/1:0+events	21:28:23	1
2498779	99	2388	12,2372	cyclictest	2505107	-21	kworker/1:0+events	19:30:19	1
2498779	99	2386	12,2371	cyclictest	2553013	-21	kworker/1:0+events	22:02:33	1
2498779	99	2386	12,2371	cyclictest	2553013	-21	kworker/1:0+events	22:02:33	1
2498779	99	2386	11,2371	cyclictest	2583681	-21	kworker/1:2+events	00:28:08	1
2498779	99	2385	12,2369	cyclictest	2577606	-21	kworker/1:1+events	23:15:51	1
2498779	99	2383	12,2367	cyclictest	2535558	-21	kworker/1:1+events	21:21:35	1
2498779	99	2382	10,2369	cyclictest	2535558	-21	kworker/1:1+events	21:10:56	1
2498781	99	2380	11,2365	cyclictest	2522762	-21	kworker/2:1+events	20:32:43	2
2498781	99	2379	12,2364	cyclictest	2585278	-21	kworker/2:0+events	00:20:35	2
2498781	99	2376	12,2361	cyclictest	2568015	-21	kworker/2:2+events	22:48:16	2
2498781	99	2375	9,2363	cyclictest	2573367	-21	kworker/2:0+events	23:10:37	2
2498781	99	2375	10,2362	cyclictest	2530981	-21	kworker/2:2+events	21:01:25	2
2498781	99	2372	11,2357	cyclictest	2579252	-21	kworker/2:2+events	23:28:23	2
2498786	99	2369	12,2353	cyclictest	2541981	-21	kworker/3:2+events	21:25:23	3
2498786	99	2365	11,2351	cyclictest	2516301	-21	kworker/3:1+events	20:49:56	3
2498779	99	2363	12,2348	cyclictest	2561579	-21	kworker/1:1+events	22:36:23	1
2498779	99	2362	12,2347	cyclictest	2503472	-21	kworker/1:2+events	19:25:22	1
2498786	99	2360	11,2346	cyclictest	2566595	-21	kworker/3:2+events	22:44:30	3
2498786	99	2358	11,2344	cyclictest	2563004	-21	kworker/3:0+events	22:45:38	3
2498776	99	2358	12,2343	cyclictest	2500008	-21	kworker/0:1+events	19:20:27	0
2498776	99	2355	12,2341	cyclictest	2580776	-21	kworker/0:0+events	23:30:20	0
2498781	99	2351	11,2337	cyclictest	2538990	-21	kworker/2:0+events	21:23:52	2
2498779	99	2351	10,2338	cyclictest	2566233	-21	kworker/1:0+events	22:54:45	1
2498779	99	2351	10,2337	cyclictest	2505107	-21	kworker/1:0+events	19:39:32	1
2498786	99	2349	10,2336	cyclictest	2580611	-21	kworker/3:2+events	23:23:31	3
2498779	99	2341	11,2327	cyclictest	2542010	-21	kworker/1:2+events	21:41:51	1
2498779	99	2340	11,2325	cyclictest	2543667	-21	kworker/1:0+events	21:31:05	1
2498781	99	2339	11,2325	cyclictest	2522762	-21	kworker/2:1+events	20:26:38	2
2498786	99	2337	9,2324	cyclictest	2550033	-21	kworker/3:1+events	21:52:36	3
2498786	99	2337	11,2322	cyclictest	2580611	-21	kworker/3:2+events	23:33:22	3
2498776	99	2337	12,2321	cyclictest	2594039	-21	kworker/0:2+events	00:07:10	0
2498776	99	2336	12,2322	cyclictest	2526025	-21	kworker/0:2+events	20:36:25	0
2498776	99	2336	12,2321	cyclictest	2570952	-21	kworker/0:1+events	22:51:45	0
2498776	99	2336	10,2322	cyclictest	2509913	-21	kworker/0:2+events	19:50:57	0
2498786	99	2335	12,2319	cyclictest	2555251	-21	kworker/3:0+events	22:16:29	3
2498786	99	2332	12,2317	cyclictest	2546827	-21	kworker/3:2+events	21:45:43	3
2498776	99	2331	11,2316	cyclictest	2530833	-21	kworker/0:1+events	20:54:27	0
2498786	99	2329	12,2315	cyclictest	2508255	-21	kworker/3:2+events	19:40:18	3
2498786	99	2329	12,2314	cyclictest	2510157	-21	kworker/3:0+events	19:46:42	3
2498786	99	2327	12,2311	cyclictest	2503773	-21	kworker/3:0+events	19:28:02	3
2498776	99	2327	11,2313	cyclictest	2564725	-21	kworker/0:0+events	22:35:38	0
2498786	99	2326	12,2311	cyclictest	2521075	-21	kworker/3:0+events	20:17:31	3
2498779	99	2326	12,2311	cyclictest	2542010	-21	kworker/1:2+events	21:39:55	1
2498776	99	2326	12,2312	cyclictest	2542279	-21	kworker/0:0+events	21:35:19	0
2498786	99	2324	12,2310	cyclictest	2598464	-21	kworker/3:2+events	00:31:51	3
2498776	99	2323	9,2311	cyclictest	2590460	-21	kworker/0:1+events	00:00:21	0
2498776	99	2323	12,2307	cyclictest	2530833	-21	kworker/0:1+events	20:59:51	0
2498776	99	2322	12,2307	cyclictest	2551634	-21	kworker/0:1+events	22:02:11	0
2498776	99	2322	12,2307	cyclictest	2551634	-21	kworker/0:1+events	22:02:10	0
2498776	99	2321	12,2305	cyclictest	2530833	-21	kworker/0:1+events	21:03:41	0
2498786	99	2318	12,2302	cyclictest	2516301	-21	kworker/3:1+events	20:27:23	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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