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@CAFxX
CAFxX / golang_minimize_allocations.md
Last active March 9, 2025 14:32
Minimize allocations in Go

📂 Minimize allocations in Go

A collection of tips for when you need to minimize the number of allocations in your Go programs.

Use the go profiler to identify which parts of your program are responsible for most allocations.

⚠️ Never apply these tricks blindly (i.e. without measuring the actual performance benefit/impact). ⚠️

Most of these tricks cause a tradeoff between reducing memory allocations and other aspects (including e.g. higher peak memory usage, higher CPU usage, lower maintainability, higher probability of introducing subtle bugs). Only apply these tricks if the tradeoff in every specfic case is globally positive.

@andrebrait
andrebrait / keychron_linux.md
Last active April 24, 2025 05:27
Keychron keyboards on Linux + Bluetooth fixes

Here is the best setup (I think so :D) for K-series Keychron keyboards on Linux.

Note: many newer Keychron keyboards use QMK as firmware and most tips here do not apply to them. Maybe the ones related to Bluetooth can be useful, but everything related to Apple's keyboard module (hid_apple) on Linux, won't work. As far as I know, all QMK-based boards use the hid_generic module instead. Examples of QMK-based boards are: Q, Q-Pro, V, K-Pro, etc.

Most of these commands have been tested on Ubuntu 20.04 and should also work on most Debian-based distributions. If a command happens not to work for you, take a look in the comment section.

Make Fn + F-keys work (NOT FOR QMK-BASED BOARDS)

Older Keychron keyboards (those not based on QMK) use the hid_apple driver on Linux, even in the Windows/Android mode, both in Bluetooth and Wired modes.

@TheoKondak
TheoKondak / LG HUB - Copy Settings to Multiple Accounts.md
Last active February 12, 2025 07:09
How to migrate Logitech HUB Profile details to another Windows Account/Device

The Problem:

I want to use Logitech Hub profiles in multiple Windows accounts and multiple Windows Devices. Logitech Hub allows me to upload a profile linked to my account or public, when I download the profile on the second account/machine, the profile is being assigned to the default profile. I was not able to find a way to reassign macros etc to the actual Application profile.

The Solution:

The problem is that in each instance of Logitech Hub, each app has a unique ID, this ID is not transferable to another instance of the application. Even when I upload a profile to my online Logitech profile when I download it back to my device, it can't assign it to the correct ID, so it stays in the Default profile.

@fortuna
fortuna / merge_results.tsv
Last active December 28, 2024 12:29
Analysis of blocking in Russia. All entries in one table.
strategy server_net server_port isp url_scheme exit_code img error
$key Digital Ocean 443 Bee Line Cable http 0 ✅
$key Digital Ocean 443 Bee Line Cable https 0 ✅
$key Digital Ocean 443 MTS PJSC http 28 ❌ curl: (28) Operation timed out after 10006 milliseconds with 0 bytes received
$key Digital Ocean 443 MTS PJSC https 28 ❌ curl: (28) Connection timed out after 10005 milliseconds
$key Digital Ocean 443 PJSC MegaFon http 0 ✅
$key Digital Ocean 443 PJSC MegaFon https 56 ❌ curl: (56) Failure when receiving data from the peer
$key Digital Ocean 443 Tele2 Russia http 0 ✅
$key Digital Ocean 443 Tele2 Russia https 0 ✅
$key Digital Ocean 5555 Bee Line Cable http 0 ✅