102,820 questions
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views
App-wide performance issue after converting from Xamarin to MAUI
This may be too open ended for SO, but I've reached a point where if I can't resolve this then I need to redo weeks of work.
I've manually converted an existing Xamarin app to MAUI, and found that ...
- 587
-1
votes
0
answers
21
views
Performance degradation after migration from a legacy war to Spring Boot, how to investigate?
I have a legacy java application using jersey 2.x and deployed to tomcat 8. Recently I migrated it to the latest version of spring boot.
The migration went without any issue and all the function tests ...
- 484
-4
votes
0
answers
38
views
Decreasing load times on blog post site [closed]
So, I've been working on an ExpressJS blog site which allows for image uploading for covers to a post. But, after using Artillery to see how an initial build fares under multiple concurrent users, I'...
-5
votes
0
answers
103
views
Fastest standard way to store doubles (sorted) and retrieve the index? [closed]
I am storing two doubles (key, value) in a container, sorted on the key. Currently I am using a flat map.
However, now I need to know what index the key is after an insert/update.
The context has high ...
- 17.3k
0
votes
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answers
98
views
Delphi 7 IDE Debug Slow Start
I have used Delphi 7 Enterprise for many years now.
Suddenly, running the integrated debugger takes 10 seconds to launch.
My D7 ran as a v6.5 VM under ESXi 6.7.
For many years it is a speedy performer....
- 387
-2
votes
0
answers
46
views
How do modern browsers optimize reflows when handling complex CSS Grid layouts with dynamic JavaScript content? [closed]
I'm experimenting with a responsive dashboard layout using CSS Grid and dynamic components injected via JavaScript (e.g. charts, lists, panels). I noticed that sometimes the reflow is sluggish or ...
0
votes
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answers
47
views
SQL Server 2022 very slow comparing to SQL Server 2014/2017 same query [closed]
I have big problem with performance in SQL Server 2022 on Windows 2025 :/
I do not know which is bigger issue - Windows or SQL Server ;)
Some background: we are using Proxmox as Hypervisor.
HOST1 - ...
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-4
votes
1
answer
71
views
Comparing for loops vs spread and concat for merging arrays in JavaScript — performance and best practices? [closed]
I'm learning JavaScript and practicing merging arrays. Here's one of the methods I wrote using two for loops:
const arr1 = [4, 5, 7, 9, 8];
const arr2 = [-1, -2, 0, 12];
const arr3 = [];
for (let i = ...
1
vote
1
answer
124
views
R lubridate isoweek function is very slow [closed]
When using lubridate's isoweek function to create ISO week, it takes very long time to run. Much slower than the base R function strftime().But other lubridate functions are pretty fast, such as month ...
- 11
1
vote
0
answers
24
views
How can I improve the file streaming performance in FastAPI for large .obj files? [duplicate]
I'm working on a FastAPI project where I need to send large .obj files to the frontend. Currently, I am using StreamingResponse to stream the files, but it's still relatively slow when handling large ...
- 108
4
votes
1
answer
166
views
Why is a ConcurrentDictionary faster than a Dictionary in benchmark?
I have a really simple benchmark to measure and compare performance of Dictionary<string, int> and ConcurrentDictionary<string, int>:
[MemoryDiagnoser]
public class ...
- 1,193
-4
votes
0
answers
32
views
Why is GitHub Copilot Agent working extremely slowly [closed]
Whenever I ask something from agent using any LLM model it takes on average 4-5 min to answer. It was working fine before but since I subscribed for paid version, I am facing this issue.
The agent ...
-2
votes
0
answers
51
views
Client-side JavaScript (embedded in Static HTML) runs much slower when the page is accessed via HTTP than from local file [closed]
I have a very simple script embedded in a static HTML file that can sort table rows by clicking the header fields. Running the page locally (not localhost, just the static file://), sorting ~10000 ...
- 11
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votes
2
answers
37
views
Why does my JMeter freeze at the end of execution in NOT GUI mode?
I am running performance tests of a createUser API in the NON GUI mode of JMeter.
The configuration is a thread having 8000 users for 8 secs.
The execution crashes at the end without displaying ...
- 1
5
votes
2
answers
134
views
Should a container type define its own swap function even if its move-semantics has been correctly implemented?
Below is the most common implementation of std::swap:
template<typename T>
void std::swap(T& a, T& b) {
auto tmp = std::move(a);
a = std::move(b);
b = std::move(...
- 43.9k