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 Sat Mar 21, 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
1972305	99	3340	12,3322	cyclictest	2017139	-21	kworker/0:0+events	21:30:14	0
1972311	99	3319	15,3301	cyclictest	2050742	-21	kworker/2:2+events	23:25:02	2
1972307	99	2917	14,2898	cyclictest	1991780	-21	kworker/1:1+events	20:10:17	1
1972315	99	2807	12,2790	cyclictest	1996339	-21	kworker/3:2+events	20:50:14	3
1972315	99	2806	13,2789	cyclictest	2052405	-21	kworker/3:0+events	23:30:00	3
1972305	99	2769	10,2755	cyclictest	1982047	-21	kworker/0:1+events	20:15:13	0
1972305	99	2767	12,2751	cyclictest	2028290	-21	kworker/0:2+events	22:20:00	0
1972305	99	2743	13,2726	cyclictest	2028290	-21	kworker/0:2+events	22:05:18	0
1972307	99	2737	13,2720	cyclictest	2063772	-21	kworker/1:0+events	23:55:14	1
1972307	99	2729	13,2713	cyclictest	2044280	-21	kworker/1:0+events	23:10:14	1
1972315	99	2668	8,2656	cyclictest	1985299	-21	kworker/3:2+events	20:05:19	3
1972311	99	2668	13,2651	cyclictest	2001378	-21	kworker/2:2+events	20:55:11	2
1972315	99	2630	12,2615	cyclictest	2073369	-21	kworker/3:1+events	00:38:51	3
1972305	99	2630	11,2615	cyclictest	1982047	-21	kworker/0:1+events	19:51:26	0
1972315	99	2580	12,2564	cyclictest	2047532	-21	kworker/3:1+events	23:05:15	3
1972305	99	2576	12,2559	cyclictest	1999686	-21	kworker/0:2+events	20:35:18	0
1972315	99	2571	12,2556	cyclictest	2073369	-21	kworker/3:1+events	00:32:24	3
1972307	99	2536	12,2520	cyclictest	2068684	-21	kworker/1:0+events	00:15:21	1
1972307	99	2536	12,2520	cyclictest	2068684	-21	kworker/1:0+events	00:15:21	1
1972315	99	2534	12,2518	cyclictest	2040781	-21	kworker/3:1+events	22:53:26	3
1972315	99	2520	11,2505	cyclictest	2031279	-21	kworker/3:1+events	22:19:14	3
1972315	99	2510	6,2501	cyclictest	2049195	-21	kworker/3:2+events	23:19:25	3
1972305	99	2509	13,2492	cyclictest	2028290	-21	kworker/0:2+events	22:03:24	0
1972305	99	2506	7,2495	cyclictest	2037821	-21	kworker/0:2+events	22:55:21	0
1972305	99	2499	12,2483	cyclictest	2010978	-21	kworker/0:2+events	21:26:01	0
1972305	99	2496	11,2482	cyclictest	2003009	-21	kworker/0:2+events	20:47:16	0
1972315	99	2494	10,2481	cyclictest	2052405	-21	kworker/3:0+events	23:21:40	3
1972311	99	2494	11,2479	cyclictest	2015478	-21	kworker/2:2+events	21:21:49	2
1972307	99	2494	9,2483	cyclictest	1997908	-21	kworker/1:2+events	20:41:05	1
1972307	99	2494	12,2479	cyclictest	2009401	-21	kworker/1:0+events	21:11:34	1
1972315	99	2489	11,2474	cyclictest	2063986	-21	kworker/3:0+events	23:55:35	3
1972315	99	2488	12,2472	cyclictest	2007866	-21	kworker/3:2+events	21:13:27	3
1972315	99	2487	11,2472	cyclictest	1985299	-21	kworker/3:2+events	20:14:28	3
1972315	99	2486	12,2471	cyclictest	2067232	-21	kworker/3:1+events	00:05:52	3
1972315	99	2486	12,2470	cyclictest	2045909	-21	kworker/3:2+events	22:59:33	3
1972315	99	2484	12,2469	cyclictest	1985299	-21	kworker/3:2+events	19:58:45	3
1972315	99	2484	11,2470	cyclictest	2038012	-21	kworker/3:2+events	22:37:28	3
1972315	99	2484	11,2469	cyclictest	2036368	-21	kworker/3:0+events	22:43:11	3
1972315	99	2484	11,2469	cyclictest	2017381	-21	kworker/3:1+events	21:31:22	3
1972315	99	2484	11,2469	cyclictest	1967149	-21	kworker/3:2+events	19:39:59	3
1972315	99	2483	11,2469	cyclictest	2007866	-21	kworker/3:2+events	21:22:58	3
1972315	99	2482	12,2467	cyclictest	2058740	-21	kworker/3:1+events	23:38:03	3
1972305	99	2481	12,2466	cyclictest	2010978	-21	kworker/0:2+events	21:15:19	0
1972307	99	2480	12,2464	cyclictest	2017171	-21	kworker/1:0+events	21:35:54	1
1972307	99	2480	12,2464	cyclictest	2012635	-21	kworker/1:1+events	21:16:54	1
1972315	99	2479	11,2464	cyclictest	2040781	-21	kworker/3:1+events	22:46:13	3
1972315	99	2479	11,2464	cyclictest	2040781	-21	kworker/3:1+events	22:46:13	3
1972315	99	2478	12,2462	cyclictest	2031279	-21	kworker/3:1+events	22:24:14	3
1972315	99	2478	11,2464	cyclictest	2060370	-21	kworker/3:2+events	00:18:04	3
1972315	99	2478	11,2464	cyclictest	2060370	-21	kworker/3:2+events	00:18:04	3
1972315	99	2478	10,2465	cyclictest	1996339	-21	kworker/3:2+events	20:41:51	3
1972315	99	2468	10,2455	cyclictest	2021945	-21	kworker/3:1+events	22:03:01	3
1972315	99	2465	12,2449	cyclictest	1985299	-21	kworker/3:2+events	19:50:17	3
1972305	99	2465	11,2450	cyclictest	2044039	-21	kworker/0:1+events	23:07:10	0
1972315	99	2457	12,2442	cyclictest	2031279	-21	kworker/3:1+events	22:32:53	3
1972315	99	2454	12,2439	cyclictest	2070405	-21	kworker/3:0+events	00:22:16	3
1972315	99	2454	12,2438	cyclictest	1983674	-21	kworker/3:0+events	19:42:40	3
1972315	99	2451	12,2437	cyclictest	2007866	-21	kworker/3:2+events	21:35:10	3
1972315	99	2450	12,2434	cyclictest	2045909	-21	kworker/3:2+events	23:01:29	3
1972315	99	2449	12,2433	cyclictest	1967149	-21	kworker/3:2+events	19:26:35	3
1972315	99	2448	12,2432	cyclictest	1985299	-21	kworker/3:2+events	19:48:20	3
1972315	99	2448	11,2433	cyclictest	2004374	-21	kworker/3:1+events	20:49:30	3
1972305	99	2444	12,2428	cyclictest	2036131	-21	kworker/0:0+events	22:31:02	0
1972307	99	2439	12,2423	cyclictest	1986756	-21	kworker/1:1+events	20:00:18	1
1972311	99	2430	12,2415	cyclictest	1975401	-21	kworker/2:1+events	19:21:36	2
1972311	99	2414	11,2400	cyclictest	2053758	-21	kworker/2:1+events	23:46:27	2
1972305	99	2412	12,2397	cyclictest	2015536	-21	kworker/0:1+events	21:24:05	0
1972311	99	2411	9,2399	cyclictest	2042620	-21	kworker/2:2+events	22:54:35	2
1972311	99	2411	12,2395	cyclictest	2028378	-21	kworker/2:2+events	22:18:52	2
1972305	99	2409	12,2393	cyclictest	1998092	-21	kworker/0:0+events	20:42:15	0
1972307	99	2408	11,2394	cyclictest	2049011	-21	kworker/1:1+events	23:17:10	1
1972307	99	2404	9,2392	cyclictest	1975431	-21	kworker/1:2+events	19:17:02	1
1972305	99	2401	11,2386	cyclictest	2064043	-21	kworker/0:1+events	00:08:28	0
1972307	99	2400	12,2385	cyclictest	2057733	-21	kworker/1:2+events	23:40:45	1
1972307	99	2398	12,2383	cyclictest	1983877	-21	kworker/1:2+events	19:48:44	1
1972307	99	2398	12,2382	cyclictest	1996244	-21	kworker/1:1+events	20:25:51	1
1972305	99	2398	12,2382	cyclictest	1982047	-21	kworker/0:1+events	20:23:33	0
1972305	99	2398	11,2383	cyclictest	1982047	-21	kworker/0:1+events	20:29:17	0
1972307	99	2397	12,2382	cyclictest	2034857	-21	kworker/1:1+events	22:32:31	1
1972307	99	2397	12,2382	cyclictest	2014295	-21	kworker/1:2+events	21:29:05	1
1972307	99	2397	12,2381	cyclictest	2055859	-21	kworker/1:1+events	23:38:25	1
1972307	99	2396	12,2381	cyclictest	2009401	-21	kworker/1:0+events	21:09:17	1
1972307	99	2396	12,2380	cyclictest	2057733	-21	kworker/1:2+events	00:11:10	1
1972307	99	2395	12,2381	cyclictest	1990173	-21	kworker/1:2+events	20:20:07	1
1972305	99	2395	12,2380	cyclictest	2072063	-21	kworker/0:3+events	00:21:05	0
1972305	99	2395	12,2380	cyclictest	1998092	-21	kworker/0:0+events	21:02:45	0
1972307	99	2394	12,2379	cyclictest	2031429	-21	kworker/1:1+events	22:14:23	1
1972307	99	2393	11,2378	cyclictest	1994622	-21	kworker/1:0+events	20:31:12	1
1972305	99	2393	11,2380	cyclictest	2023696	-21	kworker/0:1+events	21:55:06	0
1972307	99	2392	10,2378	cyclictest	2053847	-21	kworker/1:0+events	23:34:11	1
1972305	99	2392	12,2377	cyclictest	2006091	-21	kworker/0:1+events	20:56:39	0
1972305	99	2392	12,2376	cyclictest	2036131	-21	kworker/0:0+events	22:35:33	0
1972305	99	2391	11,2377	cyclictest	1976839	-21	kworker/0:2+events	19:40:45	0
1972307	99	2390	12,2374	cyclictest	2012635	-21	kworker/1:1+events	21:24:52	1
1972305	99	2389	12,2375	cyclictest	2009311	-21	kworker/0:1+events	21:06:14	0
1972315	99	2388	9,2375	cyclictest	1994682	-21	kworker/3:1+events	20:24:19	3
1972305	99	2388	12,2373	cyclictest	1998092	-21	kworker/0:0+events	20:30:47	0
1972305	99	2387	11,2372	cyclictest	2057136	-21	kworker/0:2+events	23:37:16	0
1972305	99	2384	12,2368	cyclictest	2022034	-21	kworker/0:0+events	21:44:42	0
1972307	99	2383	11,2368	cyclictest	2017171	-21	kworker/1:0+events	21:48:54	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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