Ade Attwood d7df043eb9 perf: reduce copying when sorting

Passes values by reference when sorting to reduce memory copying. The
main saving on this is preventing copying of the large vector of files
getting passed into the `sort` function and then copying each item in
the vector in the for. This results in about a 27% performance gain
reducing the full benchmark of the kubernetes benchmark by 7.89 sec

Before

| Name                         | Total         | Average       | Min           | Max           |
| ---------------------------- | ------------- | ------------- | ------------- | ------------- |
| ivy_match(file.lua) 1000000x | 02.351614 (s) | 00.000002 (s) | 00.000002 (s) | 00.000042 (s) |
| ivy_files(kubernetes) 100x   | 32.704256 (s) | 00.327043 (s) | 00.289397 (s) | 00.344413 (s) |

After

| Name                         | Total         | Average       | Min           | Max           |
| ---------------------------- | ------------- | ------------- | ------------- | ------------- |
| ivy_match(file.lua) 1000000x | 02.353386 (s) | 00.000002 (s) | 00.000002 (s) | 00.000049 (s) |
| ivy_files(kubernetes) 100x   | 24.809576 (s) | 00.248096 (s) | 00.203167 (s) | 00.270263 (s) |

2022-08-07 21:48:24 +01:00

4.1 KiB

Raw Blame History

ivy.nvim

An ivy-mode port to neovim. Ivy is a generic completion mechanism for ~~Emacs~~ Nvim

Installation

Manually

git clone https://github.com/AdeAttwood/ivy.nvim ~/.config/nvim/pack/bundle/start/ivy.nvim

Plugin managers

TODO: Add docs in the plugin managers I don't use any

Compiling

For the native searching, you will need to compile the shard library. You can do that by running the below command in the root of the plugin.

cmake -DCMAKE_BUILD_TYPE=Release -B build/Release && (cd build/Release; make -j)

If you are missing build dependencies, you can install them via apt.

sudo apt-get install build-essential pkg-config cmake

Features

Commands

A command can be run that will launch the completion UI

Command	Key Map	Description
IvyFd	<leader>p	Find files in your project with the fd cli file finder
IvyAg	<leader>/	Find content in files using the silver searcher
IvyBuffers	<leader>b	Search though open buffers
IvyLines		Search the lines in the current buffer

Actions

Action can be run on selected candidates provide functionality

Action	Description
Complete	Run the completion function, usually this will be opening a file
Peek	Run the completion function on a selection, but don't close the results window

API

  vim.ivy.run(
    -- The name given to the results window and displayed to the user
    "Title",
    -- Call back function to get all the candidates that will be displayed in
    -- the results window, The `input` will be passed in, so you can filter
    -- your results with the value from the prompt
    function(input) return { "One", "Two", Three } end,
    -- Action callback that will be called on the completion or peek actions.
    -- The currently selected item is passed in as the result.
    function(result) vim.cmd("edit " .. result) end
  )

Benchmarks

Benchmarks are of various tasks that ivy will do. The purpose of the benchmarks are to give us a baseline on where to start when trying to optimize performance in the matching and sorting, not to put ivy against other tools. When starting to optimize, you will probably need to get a baseline on your hardware.

There are fixtures provided that will create the directory structure of the kubernetes source code, from somewhere arround commit sha 985c9202ccd250a5fe22c01faf0d8f83d804b9f3. This will create a directory tree of 23511 files a relative large source tree to get a good idea of performance. To create the source tree under /tmp/ivy-trees/kubernetes run the following command. This will need to be run for the benchmarks to run.

# Create the source trees
bash ./scripts/fixtures.bash

# Run the benchmark script
luajit ./scripts/benchmark.lua

Current benchmark status with 8 CPU(s) Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz

Name	Total	Adverage	Min	Max
ivy_match(file.lua) 1000000x	02.353386 (s)	00.000002 (s)	00.000002 (s)	00.000049 (s)
ivy_files(kubneties) 100x	24.809576 (s)	00.248096 (s)	00.203167 (s)	00.270263 (s)

Other stuff you might like

ivy-mode - An emacs package that was the inspiration for this nvim plugin
Command-T - Vim plugin I used before I started this one
telescope.nvim - Another competition plugin, lots of people are using

4.1 KiB Raw Blame History