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 Fri Mar 06, 2026 00:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3208947	99	2723	12,2709	cyclictest	3281524	-21	kworker/3:2+events	23:00:23	3
3208947	99	2718	13,2702	cyclictest	3200315	-21	kworker/3:2+events	19:35:18	3
3208937	99	2712	13,2696	cyclictest	3302645	-21	kworker/0:0+events	00:00:00	0
3208940	99	2685	13,2669	cyclictest	3289805	-21	kworker/1:0+events	23:30:13	1
3208937	99	2602	12,2587	cyclictest	3305834	-21	kworker/0:2+events	00:10:17	0
3208937	99	2601	12,2585	cyclictest	3254398	-21	kworker/0:2+events	21:40:25	0
3208940	99	2576	12,2560	cyclictest	3286309	-21	kworker/1:2+events	23:12:08	1
3208940	99	2561	9,2549	cyclictest	3293368	-21	kworker/1:1+events	23:44:41	1
3208947	99	2545	10,2531	cyclictest	3287999	-21	kworker/3:2+events	23:15:16	3
3208940	99	2539	11,2525	cyclictest	3315511	-21	kworker/1:0+events	00:39:18	1
3208937	99	2536	12,2520	cyclictest	3261409	-21	kworker/0:2+events	21:59:53	0
3208940	99	2517	12,2501	cyclictest	3231552	-21	kworker/1:1+events	20:17:31	1
3208947	99	2499	12,2483	cyclictest	3301069	-21	kworker/3:2+events	23:54:16	3
3208940	99	2499	12,2483	cyclictest	3218622	-21	kworker/1:0+events	19:40:15	1
3208940	99	2496	12,2481	cyclictest	3283077	-21	kworker/1:0+events	23:08:01	1
3208940	99	2496	12,2480	cyclictest	3286309	-21	kworker/1:2+events	23:15:39	1
3208940	99	2494	11,2479	cyclictest	3313911	-21	kworker/1:1+events	00:32:30	1
3208940	99	2491	12,2475	cyclictest	3237927	-21	kworker/1:2+events	20:37:20	1
3208940	99	2489	12,2474	cyclictest	3257591	-21	kworker/1:2+events	21:53:04	1
3208940	99	2483	12,2469	cyclictest	3307440	-21	kworker/1:0+events	00:16:51	1
3208940	99	2482	12,2468	cyclictest	3279856	-21	kworker/1:1+events	22:50:01	1
3208940	99	2480	12,2465	cyclictest	3268902	-21	kworker/1:0+events	22:20:20	1
3208940	99	2478	11,2463	cyclictest	3249691	-21	kworker/1:1+events	21:18:11	1
3208940	99	2475	12,2459	cyclictest	3265668	-21	kworker/1:1+events	22:07:48	1
3208947	99	2472	12,2456	cyclictest	3268978	-21	kworker/3:2+events	22:15:41	3
3208947	99	2470	10,2457	cyclictest	3259565	-21	kworker/3:1+events	21:48:25	3
3208947	99	2470	10,2456	cyclictest	3268978	-21	kworker/3:2+events	22:34:27	3
3208947	99	2465	12,2449	cyclictest	3236284	-21	kworker/3:2+events	20:32:02	3
3208937	99	2456	11,2443	cyclictest	3296443	-21	kworker/0:0+events	23:50:03	0
3208944	99	2450	10,2437	cyclictest	3284555	-21	kworker/2:2+events	23:10:19	2
3208937	99	2450	12,2435	cyclictest	3281491	-21	kworker/0:1+events	22:56:09	0
3208947	99	2448	12,2432	cyclictest	3246647	-21	kworker/3:2+events	21:18:33	3
3208947	99	2444	8,2433	cyclictest	3286366	-21	kworker/3:1+events	23:10:40	3
3208947	99	2443	11,2428	cyclictest	3225820	-21	kworker/3:1+events	20:06:07	3
3208947	99	2443	11,2428	cyclictest	3225820	-21	kworker/3:1+events	20:06:06	3
3208937	99	2443	11,2429	cyclictest	3302645	-21	kworker/0:0+events	00:07:59	0
3208937	99	2442	11,2428	cyclictest	3254398	-21	kworker/0:2+events	21:35:54	0
3208937	99	2439	12,2424	cyclictest	3275249	-21	kworker/0:1+events	22:42:22	0
3208937	99	2439	12,2423	cyclictest	3254398	-21	kworker/0:2+events	21:29:08	0
3208937	99	2438	12,2422	cyclictest	3294813	-21	kworker/0:1+events	23:39:42	0
3208937	99	2437	12,2421	cyclictest	3267330	-21	kworker/0:0+events	22:32:14	0
3208947	99	2436	11,2422	cyclictest	3276666	-21	kworker/3:0+events	22:39:00	3
3208937	99	2436	10,2423	cyclictest	3239719	-21	kworker/0:0+events	20:45:39	0
3208937	99	2435	11,2421	cyclictest	3291510	-21	kworker/0:2+events	23:27:55	0
3208937	99	2435	10,2421	cyclictest	3283173	-21	kworker/0:0+events	23:06:53	0
3208937	99	2431	12,2415	cyclictest	3225222	-21	kworker/0:2+events	20:12:58	0
3208937	99	2426	12,2411	cyclictest	3259243	-21	kworker/0:1+events	22:06:18	0
3208937	99	2424	12,2409	cyclictest	3279795	-21	kworker/0:2+events	22:53:54	0
3208944	99	2423	12,2407	cyclictest	3297889	-21	kworker/2:1+events	23:46:57	2
3208937	99	2422	11,2408	cyclictest	3302645	-21	kworker/0:0+events	00:29:31	0
3208937	99	2420	12,2405	cyclictest	3261409	-21	kworker/0:2+events	21:51:07	0
3208937	99	2418	12,2403	cyclictest	3243238	-21	kworker/0:0+events	20:59:43	0
3208947	99	2405	11,2391	cyclictest	3308806	-21	kworker/3:1+events	00:37:25	3
3208944	99	2405	12,2389	cyclictest	3230164	-21	kworker/2:1+events	20:41:28	2
3208937	99	2402	12,2387	cyclictest	3208121	-21	kworker/0:2+events	19:32:18	0
3208947	99	2401	12,2385	cyclictest	3246647	-21	kworker/3:2+events	21:10:15	3
3208937	99	2401	11,2387	cyclictest	3208121	-21	kworker/0:2+events	19:21:38	0
3208937	99	2400	11,2387	cyclictest	3296443	-21	kworker/0:0+events	23:45:04	0
3208940	99	2395	12,2379	cyclictest	3247948	-21	kworker/1:2+events	21:22:19	1
3208947	99	2392	12,2376	cyclictest	3281524	-21	kworker/3:2+events	22:54:39	3
3208937	99	2392	11,2377	cyclictest	3239719	-21	kworker/0:0+events	20:42:12	0
3208947	99	2391	8,2379	cyclictest	3222104	-21	kworker/3:0+events	19:57:46	3
3208947	99	2391	12,2375	cyclictest	3267388	-21	kworker/3:1+events	22:09:41	3
3208947	99	2387	12,2372	cyclictest	3216870	-21	kworker/3:1+events	19:43:42	3
3208947	99	2387	11,2373	cyclictest	3284739	-21	kworker/3:0+events	23:08:46	3
3208947	99	2385	12,2369	cyclictest	3239810	-21	kworker/3:1+events	20:44:09	3
3208947	99	2383	11,2370	cyclictest	3256023	-21	kworker/3:0+events	21:40:05	3
3208937	99	2383	9,2370	cyclictest	3234869	-21	kworker/0:0+events	20:28:58	0
3208947	99	2379	12,2363	cyclictest	3200315	-21	kworker/3:2+events	19:28:29	3
3208947	99	2376	12,2360	cyclictest	3276666	-21	kworker/3:0+events	22:41:36	3
3208944	99	2376	12,2360	cyclictest	3307671	-21	kworker/2:2+events	00:19:53	2
3208944	99	2376	11,2361	cyclictest	3278254	-21	kworker/2:1+events	22:44:41	2
3208947	99	2375	12,2359	cyclictest	3243272	-21	kworker/3:1+events	21:01:39	3
3208944	99	2375	11,2360	cyclictest	3294602	-21	kworker/2:0+events	23:44:17	2
3208947	99	2368	12,2354	cyclictest	3231734	-21	kworker/3:1+events	20:25:04	3
3208947	99	2366	11,2352	cyclictest	3294541	-21	kworker/3:2+events	23:31:44	3
3208944	99	2365	12,2350	cyclictest	3259006	-21	kworker/2:1+events	21:58:22	2
3208947	99	2364	12,2349	cyclictest	3281524	-21	kworker/3:2+events	22:58:51	3
3208947	99	2363	11,2348	cyclictest	3299428	-21	kworker/3:0+events	00:03:23	3
3208940	99	2362	12,2348	cyclictest	3213725	-21	kworker/1:1+events	19:56:59	1
3208947	99	2361	12,2345	cyclictest	3246647	-21	kworker/3:2+events	21:29:32	3
3208940	99	2361	12,2346	cyclictest	3281461	-21	kworker/1:2+events	22:57:18	1
3208944	99	2359	12,2344	cyclictest	3310404	-21	kworker/2:1+events	00:27:11	2
3208937	99	2359	11,2345	cyclictest	3225222	-21	kworker/0:2+events	20:04:36	0
3208947	99	2358	12,2343	cyclictest	3279887	-21	kworker/3:1+events	22:49:40	3
3208947	99	2358	11,2343	cyclictest	3216870	-21	kworker/3:1+events	19:46:16	3
3208947	99	2357	11,2343	cyclictest	3268978	-21	kworker/3:2+events	22:22:40	3
3208944	99	2353	11,2339	cyclictest	3270405	-21	kworker/2:1+events	22:22:17	2
3208944	99	2349	9,2337	cyclictest	3270405	-21	kworker/2:1+events	22:25:21	2
3208937	99	2348	11,2333	cyclictest	3226841	-21	kworker/0:1+events	20:06:31	0
3208937	99	2348	11,2333	cyclictest	3226841	-21	kworker/0:1+events	20:06:31	0
3208947	99	2347	10,2334	cyclictest	3243272	-21	kworker/3:1+events	20:54:21	3
3208944	99	2347	11,2334	cyclictest	3249487	-21	kworker/2:0+events	21:15:09	2
3208947	99	2344	12,2329	cyclictest	3289864	-21	kworker/3:1+events	23:23:42	3
3208937	99	2342	12,2326	cyclictest	3212162	-21	kworker/0:0+events	19:18:35	0
3208944	99	2341	7,2330	cyclictest	3287759	-21	kworker/2:1+events	23:33:14	2
3208944	99	2340	12,2325	cyclictest	3230164	-21	kworker/2:1+events	20:24:40	2
3208944	99	2340	12,2325	cyclictest	3216993	-21	kworker/2:1+events	19:41:02	2
3208944	99	2340	11,2326	cyclictest	3231773	-21	kworker/2:0+events	20:19:46	2
3208944	99	2339	12,2324	cyclictest	3233441	-21	kworker/2:2+events	20:25:50	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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