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 Sun Mar 29, 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
1568559	99	2888	13,2870	cyclictest	1659457	-21	kworker/1:1+events	00:00:18	1
1568557	99	2675	13,2658	cyclictest	1655884	-21	kworker/0:2+events	23:40:14	0
1568563	99	2650	11,2635	cyclictest	1602789	-21	kworker/2:1+events	20:55:21	2
1568563	99	2650	10,2636	cyclictest	1621056	-21	kworker/2:2+events	22:00:14	2
1568559	99	2649	14,2631	cyclictest	1662614	-21	kworker/1:3+events	00:10:13	1
1568557	99	2636	13,2620	cyclictest	1664022	-21	kworker/0:2+events	00:15:01	0
1568569	99	2588	0,2583	cyclictest	1625676	-21	kworker/3:0+events	22:11:18	3
1568569	99	2578	12,2562	cyclictest	1652646	-21	kworker/3:2+events	23:30:18	3
1568559	99	2556	12,2540	cyclictest	1648015	-21	kworker/1:1+events	23:18:27	1
1568569	99	2543	12,2527	cyclictest	1665659	-21	kworker/3:0+events	00:25:17	3
1568569	99	2536	11,2521	cyclictest	1628906	-21	kworker/3:1+events	22:18:04	3
1568569	99	2532	8,2520	cyclictest	1622448	-21	kworker/3:1+events	21:56:02	3
1568569	99	2520	11,2505	cyclictest	1589671	-21	kworker/3:1+events	20:27:20	3
1568559	99	2493	12,2477	cyclictest	1580177	-21	kworker/1:2+events	19:43:33	1
1568569	99	2487	12,2472	cyclictest	1599702	-21	kworker/3:2+events	21:02:34	3
1568559	99	2486	12,2471	cyclictest	1597887	-21	kworker/1:1+events	20:41:57	1
1568569	99	2484	12,2469	cyclictest	1673569	-21	kworker/3:2+events	00:35:32	3
1568557	99	2482	12,2466	cyclictest	1598103	-21	kworker/0:1+events	20:52:38	0
1568559	99	2480	11,2465	cyclictest	1657774	-21	kworker/1:0+events	23:45:35	1
1568559	99	2479	12,2464	cyclictest	1583479	-21	kworker/1:2+events	20:33:06	1
1568559	99	2478	10,2465	cyclictest	1593478	-21	kworker/1:1+events	20:29:42	1
1568559	99	2474	9,2461	cyclictest	1611195	-21	kworker/1:2+events	21:31:47	1
1568559	99	2474	12,2458	cyclictest	1606070	-21	kworker/1:1+events	21:02:55	1
1568569	99	2470	10,2456	cyclictest	1654341	-21	kworker/3:1+events	23:37:59	3
1568559	99	2466	11,2451	cyclictest	1572219	-21	kworker/1:0+events	19:21:30	1
1568559	99	2460	12,2445	cyclictest	1611195	-21	kworker/1:2+events	21:35:11	1
1568569	99	2459	11,2444	cyclictest	1596468	-21	kworker/3:1+events	20:39:38	3
1568569	99	2457	12,2442	cyclictest	1571449	-21	kworker/3:1+events	19:20:20	3
1568559	99	2454	11,2440	cyclictest	1619187	-21	kworker/1:0+events	21:44:43	1
1568569	99	2452	12,2437	cyclictest	1588005	-21	kworker/3:0+events	20:11:46	3
1568569	99	2452	12,2436	cyclictest	1631893	-21	kworker/3:2+events	22:27:07	3
1568569	99	2452	11,2438	cyclictest	1585143	-21	kworker/3:1+events	20:03:41	3
1568569	99	2449	8,2437	cyclictest	1588005	-21	kworker/3:0+events	20:06:23	3
1568559	99	2449	11,2435	cyclictest	1606070	-21	kworker/1:1+events	21:05:38	1
1568557	99	2448	12,2434	cyclictest	1569978	-21	kworker/0:0+events	19:16:37	0
1568569	99	2447	12,2432	cyclictest	1635277	-21	kworker/3:1+events	22:52:57	3
1568569	99	2443	11,2429	cyclictest	1583507	-21	kworker/3:2+events	19:56:56	3
1568569	99	2439	12,2424	cyclictest	1599702	-21	kworker/3:2+events	21:06:01	3
1568569	99	2438	12,2422	cyclictest	1611282	-21	kworker/3:0+events	21:52:38	3
1568569	99	2432	10,2418	cyclictest	1639716	-21	kworker/3:2+events	22:48:20	3
1568569	99	2426	11,2411	cyclictest	1659134	-21	kworker/3:1+events	00:05:15	3
1568569	99	2413	11,2399	cyclictest	1609392	-21	kworker/3:2+events	21:19:55	3
1568569	99	2412	11,2398	cyclictest	1635277	-21	kworker/3:1+events	22:38:08	3
1568559	99	2409	8,2397	cyclictest	1670455	-21	kworker/1:2+events	00:33:15	1
1568569	99	2403	9,2391	cyclictest	1596468	-21	kworker/3:1+events	20:42:42	3
1568557	99	2397	10,2384	cyclictest	1596348	-21	kworker/0:2+events	20:35:47	0
1568569	99	2396	11,2381	cyclictest	1578686	-21	kworker/3:2+events	19:43:09	3
1568559	99	2388	12,2374	cyclictest	1625795	-21	kworker/1:1+events	22:30:08	1
1568569	99	2384	9,2372	cyclictest	1668885	-21	kworker/3:2+events	00:24:07	3
1568569	99	2384	12,2369	cyclictest	1635277	-21	kworker/3:1+events	22:40:46	3
1568569	99	2384	10,2369	cyclictest	1635277	-21	kworker/3:1+events	23:03:52	3
1568559	99	2378	12,2362	cyclictest	1583479	-21	kworker/1:2+events	19:56:09	1
1568557	99	2373	12,2358	cyclictest	1642915	-21	kworker/0:0+events	23:01:59	0
1568569	99	2372	10,2358	cyclictest	1644483	-21	kworker/3:2+events	23:05:22	3
1568569	99	2365	11,2350	cyclictest	1611282	-21	kworker/3:0+events	21:28:42	3
1568557	99	2362	10,2348	cyclictest	1622566	-21	kworker/0:1+events	21:59:05	0
1568569	99	2360	10,2347	cyclictest	1575400	-21	kworker/3:1+events	19:37:48	3
1568559	99	2357	10,2344	cyclictest	1597887	-21	kworker/1:1+events	20:38:29	1
1568563	99	2349	12,2334	cyclictest	1584840	-21	kworker/2:1+events	19:56:32	2
1568569	99	2338	11,2323	cyclictest	1631893	-21	kworker/3:2+events	22:30:53	3
1568563	99	2337	11,2323	cyclictest	1631837	-21	kworker/2:0+events	22:27:51	2
1568563	99	2337	10,2324	cyclictest	1568352	-21	kworker/2:0+events	19:16:58	2
1568557	99	2336	12,2320	cyclictest	1636698	-21	kworker/0:2+events	22:38:54	0
1568557	99	2332	9,2319	cyclictest	1664022	-21	kworker/0:2+events	00:26:47	0
1568563	99	2330	12,2314	cyclictest	1638454	-21	kworker/2:1+events	22:51:47	2
1568557	99	2329	11,2315	cyclictest	1647782	-21	kworker/0:0+events	23:39:29	0
1568563	99	2328	12,2314	cyclictest	1614153	-21	kworker/2:1+events	21:30:15	2
1568563	99	2328	12,2312	cyclictest	1568352	-21	kworker/2:0+events	19:25:17	2
1568563	99	2327	12,2311	cyclictest	1599430	-21	kworker/2:1+events	20:45:24	2
1568563	99	2326	12,2310	cyclictest	1667193	-21	kworker/2:2+events	00:15:24	2
1568563	99	2325	12,2310	cyclictest	1638454	-21	kworker/2:1+events	23:04:16	2
1568557	99	2325	12,2310	cyclictest	1599755	-21	kworker/0:0+events	20:46:34	0
1568557	99	2325	11,2311	cyclictest	1609363	-21	kworker/0:1+events	21:21:25	0
1568557	99	2321	12,2306	cyclictest	1614241	-21	kworker/0:0+events	21:28:20	0
1568557	99	2316	12,2300	cyclictest	1660620	-21	kworker/0:0+events	00:08:21	0
1568557	99	2313	12,2298	cyclictest	1617389	-21	kworker/0:1+events	21:44:20	0
1568559	99	2311	12,2296	cyclictest	1665444	-21	kworker/1:0+events	00:20:20	1
1568557	99	2311	12,2296	cyclictest	1627156	-21	kworker/0:1+events	22:49:52	0
1568557	99	2311	11,2298	cyclictest	1664022	-21	kworker/0:2+events	00:30:12	0
1568559	99	2309	10,2296	cyclictest	1625795	-21	kworker/1:1+events	22:10:34	1
1568563	99	2306	11,2292	cyclictest	1597799	-21	kworker/2:2+events	20:50:23	2
1568557	99	2306	12,2291	cyclictest	1662368	-21	kworker/0:1+events	23:59:34	0
1568557	99	2305	10,2292	cyclictest	1670181	-21	kworker/0:0+events	00:21:51	0
1568557	99	2304	12,2289	cyclictest	1673833	-21	kworker/0:0+events	00:35:56	0
1568557	99	2304	11,2289	cyclictest	1620942	-21	kworker/0:2+events	21:53:01	0
1568559	99	2300	10,2287	cyclictest	1641437	-21	kworker/1:1+events	22:58:15	1
1568569	99	2299	10,2285	cyclictest	1615759	-21	kworker/3:2+events	21:34:24	3
1568557	99	2297	12,2282	cyclictest	1585083	-21	kworker/0:1+events	20:04:28	0
1568563	99	2295	11,2280	cyclictest	1636848	-21	kworker/2:2+events	22:47:12	2
1568557	99	2293	11,2279	cyclictest	1649539	-21	kworker/0:1+events	23:22:17	0
1568557	99	2293	11,2279	cyclictest	1649539	-21	kworker/0:1+events	23:22:17	0
1568569	99	2283	12,2268	cyclictest	1580299	-21	kworker/3:0+events	19:53:52	3
1568563	99	2281	12,2266	cyclictest	1640147	-21	kworker/2:0+events	22:55:11	2
1568559	99	2280	11,2266	cyclictest	1585111	-21	kworker/1:1+events	20:02:36	1
1568569	99	2274	11,2259	cyclictest	1602551	-21	kworker/3:1+events	20:52:16	3
1568559	99	2274	10,2260	cyclictest	1599671	-21	kworker/1:0+events	20:47:20	1
1568559	99	2273	11,2260	cyclictest	1606070	-21	kworker/1:1+events	21:10:09	1
1568559	99	2272	11,2257	cyclictest	1612815	-21	kworker/1:1+events	21:24:51	1
1568559	99	2271	11,2256	cyclictest	1620792	-21	kworker/1:1+events	21:49:39	1
1568559	99	2271	10,2258	cyclictest	1583479	-21	kworker/1:2+events	20:56:29	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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