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 Apr 07, 2026 00:44:19)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1604269	99	2942	12,2925	cyclictest	1702852	-21	kworker/0:0+events	00:20:13	0
1604274	99	2834	13,2817	cyclictest	1636407	-21	kworker/1:2+events	21:35:09	1
1604274	99	2780	13,2764	cyclictest	1617377	-21	kworker/1:0+events	19:50:01	1
1604282	99	2777	13,2761	cyclictest	1633157	-21	kworker/3:1+events	20:40:00	3
1604274	99	2776	13,2759	cyclictest	1622183	-21	kworker/1:0+events	20:25:12	1
1604282	99	2769	13,2753	cyclictest	1625185	-21	kworker/3:2+events	20:15:20	3
1604274	99	2763	13,2748	cyclictest	1636407	-21	kworker/1:2+events	21:00:12	1
1604274	99	2751	13,2734	cyclictest	1696543	-21	kworker/1:2+events	00:13:33	1
1604274	99	2738	12,2722	cyclictest	1622183	-21	kworker/1:0+events	20:14:12	1
1604274	99	2734	13,2717	cyclictest	1675367	-21	kworker/1:0+events	22:50:13	1
1604269	99	2734	14,2716	cyclictest	1620438	-21	kworker/0:2+events	20:20:17	0
1604278	99	2705	11,2690	cyclictest	1685203	-21	kworker/2:0+events	00:00:18	2
1604278	99	2655	13,2638	cyclictest	1670388	-21	kworker/2:1+events	22:45:13	2
1604274	99	2629	10,2614	cyclictest	1606343	-21	kworker/1:0+events	19:25:12	1
1604282	99	2589	13,2573	cyclictest	1641118	-21	kworker/3:0+events	21:20:22	3
1604269	99	2561	10,2547	cyclictest	1633063	-21	kworker/0:1+events	21:15:00	0
1604282	99	2533	12,2518	cyclictest	1645854	-21	kworker/3:2+events	21:25:42	3
1604274	99	2530	8,2520	cyclictest	1655315	-21	kworker/1:1+events	22:05:02	1
1604274	99	2528	12,2512	cyclictest	1655315	-21	kworker/1:1+events	21:55:53	1
1604274	99	2526	12,2510	cyclictest	1668964	-21	kworker/1:1+events	22:40:15	1
1604278	99	2524	12,2508	cyclictest	1670388	-21	kworker/2:1+events	22:43:19	2
1604282	99	2522	10,2508	cyclictest	1659360	-21	kworker/3:1+events	22:14:38	3
1604282	99	2503	12,2488	cyclictest	1696366	-21	kworker/3:1+events	00:27:32	3
1604274	99	2503	12,2486	cyclictest	1680414	-21	kworker/1:1+events	23:14:23	1
1604274	99	2503	12,2486	cyclictest	1680414	-21	kworker/1:1+events	23:14:22	1
1604278	99	2494	12,2479	cyclictest	1694981	-21	kworker/2:2+events	23:56:03	2
1604269	99	2494	12,2478	cyclictest	1709299	-21	kworker/0:1+events	00:32:45	0
1604278	99	2493	12,2478	cyclictest	1662469	-21	kworker/2:2+events	22:14:14	2
1604278	99	2493	12,2478	cyclictest	1647514	-21	kworker/2:2+events	21:24:33	2
1604278	99	2493	12,2477	cyclictest	1598872	-21	kworker/2:0+events	19:50:25	2
1604282	99	2492	10,2478	cyclictest	1637708	-21	kworker/3:1+events	20:54:04	3
1604278	99	2492	12,2477	cyclictest	1645885	-21	kworker/2:0+events	21:30:15	2
1604274	99	2489	12,2474	cyclictest	1629833	-21	kworker/1:1+events	20:43:53	1
1604282	99	2487	12,2472	cyclictest	1688580	-21	kworker/3:2+events	23:38:30	3
1604274	99	2486	12,2471	cyclictest	1668964	-21	kworker/1:1+events	22:32:12	1
1604278	99	2480	12,2464	cyclictest	1650805	-21	kworker/2:2+events	21:40:33	2
1604269	99	2479	12,2463	cyclictest	1699530	-21	kworker/0:1+events	00:18:01	0
1604282	99	2478	12,2462	cyclictest	1665533	-21	kworker/3:2+events	22:25:43	3
1604269	99	2472	6,2463	cyclictest	1620438	-21	kworker/0:2+events	20:31:38	0
1604269	99	2472	12,2456	cyclictest	1654099	-21	kworker/0:0+events	21:53:12	0
1604269	99	2472	12,2456	cyclictest	1620438	-21	kworker/0:2+events	20:03:49	0
1604274	99	2471	11,2457	cyclictest	1610554	-21	kworker/1:2+events	19:32:06	1
1604269	99	2468	12,2453	cyclictest	1639376	-21	kworker/0:0+events	21:06:17	0
1604269	99	2468	12,2453	cyclictest	1639376	-21	kworker/0:0+events	21:06:17	0
1604282	99	2467	12,2451	cyclictest	1620346	-21	kworker/3:2+events	19:58:27	3
1604269	99	2463	12,2447	cyclictest	1647542	-21	kworker/0:1+events	21:25:19	0
1604269	99	2461	12,2445	cyclictest	1615970	-21	kworker/0:1+events	19:58:05	0
1604269	99	2458	12,2442	cyclictest	1668842	-21	kworker/0:2+events	22:32:34	0
1604274	99	2453	11,2438	cyclictest	1686734	-21	kworker/1:1+events	23:21:43	1
1604274	99	2447	12,2431	cyclictest	1704324	-21	kworker/1:1+events	00:18:22	1
1604274	99	2446	12,2430	cyclictest	1696543	-21	kworker/1:2+events	23:57:13	1
1604274	99	2443	12,2428	cyclictest	1650926	-21	kworker/1:0+events	21:52:50	1
1604274	99	2440	12,2424	cyclictest	1663837	-21	kworker/1:1+events	22:16:54	1
1604274	99	2440	11,2425	cyclictest	1647607	-21	kworker/1:0+events	21:27:10	1
1604282	99	2439	10,2426	cyclictest	1685053	-21	kworker/3:0+events	23:28:37	3
1604274	99	2438	12,2422	cyclictest	1665436	-21	kworker/1:0+events	22:27:14	1
1604274	99	2437	12,2421	cyclictest	1622183	-21	kworker/1:0+events	20:21:27	1
1604282	99	2436	12,2420	cyclictest	1626847	-21	kworker/3:1+events	20:27:51	3
1604274	99	2436	8,2425	cyclictest	1676998	-21	kworker/1:1+events	22:57:27	1
1604274	99	2436	12,2420	cyclictest	1680414	-21	kworker/1:1+events	23:07:28	1
1604274	99	2436	11,2421	cyclictest	1628232	-21	kworker/1:2+events	20:31:15	1
1604274	99	2435	12,2419	cyclictest	1693313	-21	kworker/1:1+events	23:49:15	1
1604274	99	2435	12,2419	cyclictest	1658753	-21	kworker/1:2+events	22:11:34	1
1604274	99	2434	12,2418	cyclictest	1622183	-21	kworker/1:0+events	20:19:30	1
1604274	99	2434	11,2419	cyclictest	1650926	-21	kworker/1:0+events	21:43:16	1
1604282	99	2433	12,2417	cyclictest	1677241	-21	kworker/3:0+events	23:05:33	3
1604274	99	2433	11,2419	cyclictest	1636407	-21	kworker/1:2+events	20:50:38	1
1604274	99	2432	11,2418	cyclictest	1606343	-21	kworker/1:0+events	19:17:14	1
1604278	99	2430	12,2415	cyclictest	1699499	-21	kworker/2:1+events	00:39:38	2
1604274	99	2426	10,2412	cyclictest	1622183	-21	kworker/1:0+events	20:07:18	1
1604282	99	2425	12,2409	cyclictest	1657131	-21	kworker/3:0+events	21:58:33	3
1604282	99	2422	10,2408	cyclictest	1620346	-21	kworker/3:2+events	20:04:12	3
1604269	99	2422	12,2407	cyclictest	1647542	-21	kworker/0:1+events	21:23:25	0
1604282	99	2421	12,2406	cyclictest	1686974	-21	kworker/3:1+events	23:33:33	3
1604282	99	2421	12,2406	cyclictest	1672144	-21	kworker/3:2+events	22:52:52	3
1604282	99	2417	10,2404	cyclictest	1668784	-21	kworker/3:1+events	22:41:46	3
1604282	99	2413	10,2400	cyclictest	1631436	-21	kworker/3:0+events	20:42:42	3
1604282	99	2412	12,2397	cyclictest	1649238	-21	kworker/3:0+events	21:40:58	3
1604282	99	2412	12,2397	cyclictest	1631436	-21	kworker/3:0+events	20:48:45	3
1604278	99	2410	12,2394	cyclictest	1662469	-21	kworker/2:2+events	22:19:59	2
1604274	99	2410	12,2395	cyclictest	1612457	-21	kworker/1:1+events	19:41:36	1
1604282	99	2409	10,2395	cyclictest	1677241	-21	kworker/3:0+events	22:57:06	3
1604282	99	2408	10,2396	cyclictest	1707779	-21	kworker/3:0+events	00:30:07	3
1604282	99	2407	12,2391	cyclictest	1673773	-21	kworker/3:0+events	22:45:59	3
1604282	99	2407	10,2394	cyclictest	1612592	-21	kworker/3:1+events	19:44:44	3
1604282	99	2406	12,2391	cyclictest	1621973	-21	kworker/3:0+events	20:23:42	3
1604282	99	2406	12,2390	cyclictest	1618711	-21	kworker/3:1+events	19:53:52	3
1604282	99	2405	11,2390	cyclictest	1601912	-21	kworker/3:0+events	19:28:38	3
1604274	99	2405	11,2391	cyclictest	1707857	-21	kworker/1:2+events	00:29:44	1
1604282	99	2401	12,2385	cyclictest	1696366	-21	kworker/3:1+events	00:14:41	3
1604269	99	2397	12,2381	cyclictest	1687064	-21	kworker/0:1+events	23:29:02	0
1604278	99	2396	11,2381	cyclictest	1657008	-21	kworker/2:1+events	22:03:10	2
1604278	99	2394	12,2379	cyclictest	1685203	-21	kworker/2:0+events	23:49:38	2
1604274	99	2392	11,2378	cyclictest	1636407	-21	kworker/1:2+events	20:57:53	1
1604269	99	2390	12,2374	cyclictest	1662353	-21	kworker/0:0+events	22:12:44	0
1604269	99	2386	12,2370	cyclictest	1678725	-21	kworker/0:2+events	23:02:50	0
1604269	99	2385	11,2370	cyclictest	1637768	-21	kworker/0:2+events	20:56:43	0
1604269	99	2384	12,2369	cyclictest	1664776	-21	kworker/0:1+events	22:20:44	0
1604269	99	2383	11,2368	cyclictest	1649176	-21	kworker/0:0+events	21:31:21	0
1604278	99	2382	11,2367	cyclictest	1704413	-21	kworker/2:2+events	00:21:45	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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