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 Wed Mar 04, 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
2255321	99	3412	15,3392	cyclictest	2301757	-21	kworker/2:2+events	21:35:11	2
2255321	99	2899	15,2880	cyclictest	2337059	-21	kworker/2:2+events	23:30:00	2
2255314	99	2810	13,2792	cyclictest	2277923	-21	kworker/0:2+events	20:20:15	0
2255314	99	2806	13,2789	cyclictest	2311864	-21	kworker/0:2+events	22:05:20	0
2255314	99	2804	12,2789	cyclictest	2335463	-21	kworker/0:0+events	23:25:00	0
2255317	99	2764	11,2750	cyclictest	2256539	-21	kworker/1:2+events	19:15:00	1
2255314	99	2757	13,2740	cyclictest	2273150	-21	kworker/0:1+events	20:05:19	0
2255314	99	2725	13,2709	cyclictest	2269951	-21	kworker/0:0+events	20:00:19	0
2255321	99	2687	13,2670	cyclictest	2358091	-21	kworker/2:1+events	00:30:13	2
2255321	99	2652	13,2635	cyclictest	2313128	-21	kworker/2:0+events	22:10:18	2
2255321	99	2649	11,2634	cyclictest	2330926	-21	kworker/2:0+events	23:05:09	2
2255323	99	2620	13,2603	cyclictest	2311763	-21	kworker/3:1+events	22:15:18	3
2255321	99	2574	12,2559	cyclictest	2300124	-21	kworker/2:1+events	21:26:49	2
2255317	99	2569	12,2553	cyclictest	2274664	-21	kworker/1:2+events	20:15:15	1
2255314	99	2569	11,2554	cyclictest	2321140	-21	kworker/0:2+events	22:50:18	0
2255314	99	2527	12,2511	cyclictest	2358152	-21	kworker/0:1+events	00:35:16	0
2255317	99	2518	12,2504	cyclictest	2316157	-21	kworker/1:0+events	22:25:14	1
2255321	99	2510	12,2494	cyclictest	2303647	-21	kworker/2:1+events	21:42:50	2
2255317	99	2500	12,2484	cyclictest	2260172	-21	kworker/1:2+events	19:24:06	1
2255317	99	2497	12,2481	cyclictest	2332619	-21	kworker/1:2+events	23:19:40	1
2255321	99	2496	11,2482	cyclictest	2284548	-21	kworker/2:0+events	20:45:56	2
2255317	99	2494	12,2478	cyclictest	2329543	-21	kworker/1:0+events	23:00:57	1
2255317	99	2494	12,2478	cyclictest	2297171	-21	kworker/1:0+events	21:27:37	1
2255321	99	2493	12,2477	cyclictest	2269980	-21	kworker/2:1+events	20:18:22	2
2255321	99	2492	12,2477	cyclictest	2358091	-21	kworker/2:1+events	00:28:18	2
2255317	99	2492	12,2477	cyclictest	2271404	-21	kworker/1:1+events	19:57:41	1
2255321	99	2491	12,2475	cyclictest	2290745	-21	kworker/2:0+events	20:58:25	2
2255317	99	2491	12,2475	cyclictest	2295476	-21	kworker/1:1+events	21:22:44	1
2255317	99	2490	12,2475	cyclictest	2278173	-21	kworker/1:0+events	20:51:12	1
2255323	99	2489	12,2473	cyclictest	2281405	-21	kworker/3:2+events	20:35:11	3
2255317	99	2488	12,2473	cyclictest	2260172	-21	kworker/1:2+events	19:25:14	1
2255317	99	2486	12,2470	cyclictest	2261853	-21	kworker/1:0+events	19:31:14	1
2255317	99	2485	12,2469	cyclictest	2332619	-21	kworker/1:2+events	23:31:54	1
2255317	99	2485	12,2469	cyclictest	2332619	-21	kworker/1:2+events	23:31:54	1
2255321	99	2481	12,2467	cyclictest	2292388	-21	kworker/2:2+events	21:10:55	2
2255321	99	2481	12,2467	cyclictest	2292388	-21	kworker/2:2+events	21:10:54	2
2255321	99	2480	12,2466	cyclictest	2261993	-21	kworker/2:1+events	19:45:02	2
2255317	99	2480	11,2466	cyclictest	2326053	-21	kworker/1:1+events	22:48:45	1
2255317	99	2480	11,2465	cyclictest	2292304	-21	kworker/1:0+events	21:07:05	1
2255317	99	2480	10,2467	cyclictest	2278173	-21	kworker/1:0+events	20:22:25	1
2255317	99	2477	12,2462	cyclictest	2278173	-21	kworker/1:0+events	20:35:36	1
2255317	99	2477	12,2462	cyclictest	2261853	-21	kworker/1:0+events	20:11:02	1
2255317	99	2477	11,2462	cyclictest	2292304	-21	kworker/1:0+events	21:11:39	1
2255317	99	2477	11,2462	cyclictest	2292304	-21	kworker/1:0+events	21:11:39	1
2255317	99	2475	11,2460	cyclictest	2357914	-21	kworker/1:1+events	00:26:25	1
2255317	99	2473	9,2460	cyclictest	2326053	-21	kworker/1:1+events	22:53:01	1
2255317	99	2470	12,2450	cyclictest	2327686	-21	kworker/1:2+events	22:55:17	1
2255317	99	2469	11,2455	cyclictest	2326053	-21	kworker/1:1+events	23:13:07	1
2255317	99	2468	12,2453	cyclictest	2303527	-21	kworker/1:2+events	21:55:22	1
2255323	99	2465	11,2450	cyclictest	2263339	-21	kworker/3:1+events	19:34:19	3
2255317	99	2465	11,2451	cyclictest	2348516	-21	kworker/1:1+events	23:58:14	1
2255317	99	2464	12,2449	cyclictest	2350194	-21	kworker/1:2+events	00:05:26	1
2255317	99	2445	12,2430	cyclictest	2348516	-21	kworker/1:1+events	00:01:17	1
2255317	99	2440	10,2426	cyclictest	2278173	-21	kworker/1:0+events	20:42:52	1
2255314	99	2435	12,2419	cyclictest	2254802	-21	kworker/0:2+events	19:34:41	0
2255314	99	2433	11,2418	cyclictest	2282717	-21	kworker/0:2+events	20:38:36	0
2255314	99	2430	10,2417	cyclictest	2286059	-21	kworker/0:1+events	20:47:26	0
2255314	99	2429	12,2414	cyclictest	2351582	-21	kworker/0:2+events	00:08:30	0
2255323	99	2425	12,2409	cyclictest	2311763	-21	kworker/3:1+events	22:05:43	3
2255314	99	2422	12,2407	cyclictest	2304128	-21	kworker/0:0+events	21:57:39	0
2255314	99	2421	8,2409	cyclictest	2264792	-21	kworker/0:1+events	19:41:34	0
2255314	99	2420	12,2405	cyclictest	2354861	-21	kworker/0:1+events	00:18:31	0
2255314	99	2420	12,2404	cyclictest	2289286	-21	kworker/0:1+events	21:04:48	0
2255314	99	2418	7,2408	cyclictest	2339378	-21	kworker/0:2+events	23:54:50	0
2255314	99	2418	12,2404	cyclictest	2279554	-21	kworker/0:1+events	20:25:03	0
2255314	99	2411	12,2396	cyclictest	2341770	-21	kworker/0:0+events	23:40:18	0
2255314	99	2409	12,2394	cyclictest	2329330	-21	kworker/0:2+events	22:59:01	0
2255317	99	2407	12,2392	cyclictest	2351827	-21	kworker/1:1+events	00:13:54	1
2255314	99	2404	9,2392	cyclictest	2325959	-21	kworker/0:1+events	23:04:47	0
2255323	99	2402	12,2386	cyclictest	2281405	-21	kworker/3:2+events	20:29:55	3
2255314	99	2400	11,2386	cyclictest	2293901	-21	kworker/0:2+events	21:20:50	0
2255321	99	2396	9,2383	cyclictest	2281256	-21	kworker/2:1+events	20:31:48	2
2255321	99	2394	12,2379	cyclictest	2343887	-21	kworker/2:1+events	23:45:17	2
2255314	99	2394	12,2379	cyclictest	2292275	-21	kworker/0:0+events	21:08:56	0
2255314	99	2388	10,2374	cyclictest	2356481	-21	kworker/0:0+events	00:25:17	0
2255323	99	2387	11,2374	cyclictest	2264974	-21	kworker/3:0+events	19:40:05	3
2255317	99	2387	11,2372	cyclictest	2332619	-21	kworker/1:2+events	23:23:06	1
2255317	99	2385	11,2370	cyclictest	2337242	-21	kworker/1:1+events	23:27:39	1
2255321	99	2379	10,2366	cyclictest	2334270	-21	kworker/2:0+events	23:20:47	2
2255314	99	2378	12,2362	cyclictest	2311864	-21	kworker/0:2+events	22:10:40	0
2255314	99	2378	11,2363	cyclictest	2321140	-21	kworker/0:2+events	22:40:46	0
2255323	99	2373	12,2358	cyclictest	2321011	-21	kworker/3:0+events	22:36:59	3
2255321	99	2369	11,2355	cyclictest	2324388	-21	kworker/2:1+events	22:56:46	2
2255321	99	2363	12,2348	cyclictest	2287456	-21	kworker/2:2+events	20:53:05	2
2255323	99	2359	12,2344	cyclictest	2301670	-21	kworker/3:2+events	21:37:06	3
2255323	99	2352	10,2338	cyclictest	2276387	-21	kworker/3:1+events	20:30:17	3
2255323	99	2348	12,2333	cyclictest	2298950	-21	kworker/3:1+events	21:31:01	3
2255323	99	2344	12,2329	cyclictest	2293747	-21	kworker/3:1+events	21:09:44	3
2255323	99	2341	12,2326	cyclictest	2274547	-21	kworker/3:0+events	20:09:07	3
2255321	99	2340	12,2324	cyclictest	2356388	-21	kworker/2:0+events	00:37:28	2
2255323	99	2339	10,2325	cyclictest	2266599	-21	kworker/3:2+events	20:14:28	3
2255321	99	2339	8,2327	cyclictest	2306935	-21	kworker/2:0+events	21:51:09	2
2255323	99	2338	12,2322	cyclictest	2285844	-21	kworker/3:1+events	20:53:51	3
2255323	99	2338	12,2322	cyclictest	2266599	-21	kworker/3:2+events	20:04:08	3
2255323	99	2337	12,2322	cyclictest	2311763	-21	kworker/3:1+events	22:54:54	3
2255323	99	2336	12,2321	cyclictest	2348728	-21	kworker/3:0+events	00:02:03	3
2255323	99	2336	11,2322	cyclictest	2331014	-21	kworker/3:0+events	23:13:53	3
2255323	99	2336	11,2322	cyclictest	2285844	-21	kworker/3:1+events	20:55:20	3
2255323	99	2333	12,2318	cyclictest	2341818	-21	kworker/3:2+events	23:36:53	3
2255323	99	2332	11,2318	cyclictest	2251789	-21	kworker/3:0+events	19:21:29	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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