Zsh compdump slow. This little hack restricts # it to once a day.

Zsh compdump slow zshrc Obviously I want to keep oh-my-zsh and my plugins, but >0. zcompdump file to see if it must be # regenerated adds a noticable delay to zsh startup. Based on the code nohillside found, the problem is that __git_prompt_git status doesn't work properly: it should complete almost instantly, but on your system it's blocking. Sometime the network might be slow or even down. 836 total 简洁模式： time zsh --no-rcs -i -c exit zsh --no-rcs -i -c exit 0. zcompdump file, it fails midway because you aren't allowed to write anymore. The output is below: Sep 5, 2019 · So in my case, the rbenv plugin was extremely slow. zcompdump file by editing Jul 15, 2020 · 因为zsh的 compinit 机制根据某些环境变量创建文件名，所以这里是$HOST。 删除它们是安全的，但除非在zsh配置中将-D添加到compinit行，否则将重新创建它们 Sep 4, 2018 · I have this line in . # - 'N' makes the glob Jul 23, 2018 · Some handy and well-aimed investigations and optimisations could enhance the performance of your favourite ZSH. But it also meant that my shell took a fair amount of time to start up, around 1 second: 1 2 3 $ time zsh -i -c exit zsh -i -c exit 0. To puts things in perspective , its almost 9 times slower than ra May 12, 2024 · I'm using oh-my-zsh, and it used to work well until yesterday. zcompdump is an artifact of Oh-My-Zsh. yes oh-my-zsh will call compinit for you but its not optimized and its called multiple times (which contributes to slow start up times as its an expensive call). zshrc file, to tell ZSH to not check for insecure directories. I would like to store them in a separate location since they clutter my h Oct 20, 2020 · 概述 Mac 下 iterm + zsh + ohmyzsh 配置的组合本来很好用，但是随着使用插件的增多，再加上. Here is a copy of my . zshrc f Perhaps this rebasing has somehow contributed to the slowdown? --- John. Dec 14, 2023 · This issue started occurring randomly yesterday and I cannot figure this out. Some time ago I shared my dotfiles to the world. 2 which can cause slow speed when used with iTerm or oh-my-zsh. It is written in shell functions based on the features described in zshcompwid (1). You can prevent zsh from using a . 10 seconds. Executing compinit -d dumpfile shaves maybe a second off the load time, but it doesn't stay that way. 15 Catalina the default shell will be zsh. I was never really happy with the shell load time, though. Nov 16, 2022 · As of yesterday, 2 things have slowed in zsh: prompt is slow to load (in git dirs only) tab auto completion is slow (like git checkout some-bra[tab] takes longer than it used to) One thought I ha Jan 11, 2025 · Identify the current Zsh version: Open your terminal and type: zsh --version This command will display the version of Zsh installed on your system. Nov 1, 2020 · OMZ 初始化的主要步骤包括： 默认路径设置，如： ZSH 、 ZSH_CACHE_DIR 、 fpath 、 ZSH_CUSTOM 、 ZSH_COMPDUMP 等 检查更新 初始化补全系统，包括：预设 fpath 变量、创建 . This, in turn, slows the startup of your shell quite a lot. zcompdump-James’s MacBook Pro-5. all-zsh-config directory) but a . 3 file was always present (and Aug 11, 2022 · Describe the bug Everytime I run the zsh command it will gives me the following error compinit:480: compdump: function definition file not found Steps to reproduce May 21, 2023 · I'm trying to change the default location of the zsh completion cache files in macOS. Recompile Zsh's built-in utilities: To recompile Zsh's built-in utilities, you can use the zcompile command. 6s，下面是详细的步骤 Nov 12, 2025 · # On slow systems, checking the cached . zshrc has grown to include many tricks & tools I rely on daily. 00s user 0. I am having a hard time defining and running my own shell functions in zsh. If you have it, zsh starts faster. Oct 23, 2022 · agkozak version of z installation section mentions to use a plugin manager to install it. Mar 30, 2020 · Describe the bug After following the instructions for enabling shell completion I still can’t get the completion functionality to work. This changes the documentation and completion functions along with allowing -k and -z to be used with typeset -f or functions. Nov 9, 2018 · Zsh Compinit RTFM Slow start times in Zsh are probably a sign of poor configuration Originally published on November 9, 2018 Last updated on July 6, 2024 Filed under Technology heh, I think thats the thread where I groked my function. This little hack restricts # it to once a day. In this series, I will document my experiences moving bash settings, configurations, and scripts over to zsh. 4 #13110 Closed Answered by cstorres cstorres asked this question in Help cstorres Dec 21, 2021 · maybe it's Lmod that cause the problem. My shell went from almost 10 seconds to ~2 seconds. 0) Any help is appreciated! May 10, 2025 · Speed isn’t just a metric - it’s a multiplier on creativity, productivity, and joy. # # The globbing is a little complicated # compinit optimization for oh-my-zsh # On slow systems, checking the cached . prompt 反应速度慢 Feb 2, 2023 · But we can easily fix this slow zsh startup! Instead of always loading your nvm autocompletion, we can command oh-my-zsh to just load nvm ressources on-demand, also known as lazy-loading. As I don’t use that plugin so I simply disabled by removing the plugin from the plugin section of file ~/. Even booting it for the first time feels like it is slow to render. Part 1: Moving to zsh Part 2: Configuration Files Part 3: Shell Options Part 4: Aliases and Functions Part 5: Completions (this article) Part… This started a while back but has gotten to the point where zsh with antigen is unusable for me. # # The globbing is a little complicated here: fi unset _comp_files I say probably because as far as I can tell, . so if you want my personal opinion, ditch oh-my-zsh. I recently reconfigured my `. May 6, 2010 · The default zsh provided by mac is at /usr/bin/zsh and might be using an older version like 5. FPATH but in very different ways. 949 total One second may not sound like a lot, but it meant that every time I opened a new terminal tab, my shell prompt wouldn’t show up Jul 17, 2020 · Explains the reason for multiple `. Also, if you enjoy using my software, please consider giving back by sponsoring me. - FAQ · ohmyzsh/ohmyzsh Wiki 🙃 A delightful community-driven (with 2,400+ contributors) framework for managing your zsh configuration. zshrc and ran the echo i previously ran and the output showed /dev/null. zshrc to see what takes the most time. Unless there's something highly unusual in your setup, this is a bug in oh-my-zsh. zshrc of course, and a new . 9 (x86_64-apple-darwin21. To make pasting in zsh fast, execute the below command in the terminal. This is the story of how I fixed one of my most important tools in my toolkit when it started slowing me down. Prezto creates a similar file, but it also compiles the file with zcompile resulting in . 73 else 74 compinit -C -d "$ {ZSH_COMPDUMP}" 75 fi 76 else 77 compinit -C -d "$ {ZSH_COMPDUMP}" 78 fi Hello, I am not very proficient in zsh. 9k This describes the shell code for the 'new' completion system, referred to as compsys. It’s grown to hundreds of lines spread over many files, so it’s not possible to just intuit what is slow. My Zsh takes up to six 6 seconds to start up so I added zmodload zsh/zprof and zprof to my . 73s system 93% cpu 12. Why do export and readonly accept -f I am trying to fix tailscale plugin, but facing some problem. May 22, 2022 · My first thought was: Do you have some network drives referenced in your zshrc? Or is a network share included in your path? IMHO this is a typical cause for significantly changing execution times. Most of it was spent by antigen loading the plugins I use. I tracked it down to being something to do with compinit running too much but not sure what step to take next. Both these shell use shell var. 8 oh my zsh(好像没版本号 Jan 30, 2025 · Applying my skills in performance optimization in a new domain: terminal (zsh) startup speed. I came across this Speeding Up My Does your question imply that zsh with cygwin is more or less functional on vista? My experience with it, confirmed by many postings around the 'net, is that the cygwin fork functionality is completely broken on vista and this makes zsh essentially unusable on vista. I also don’t don’t use any other zsh plugin other than git. My Terminal (iTerm2 and default Mac-Terminal) starts very slow now - I have a real "waiting" time after opening Ap Jun 26, 2020 · And, while it wasn't slow, I also dropped zsh-autosuggestions, which brought the shell load time down to about 1. May 29, 2025 · Zsh/Bash 启动速度优化 在安装完 Conda 之后，会发现每次启动 Zsh/Bash 的时候都需要加载时间，这个时候就会发现没有以前流畅了，原因是因为每次启动 Shell 时都需要去加载 Conda 环境，才能保证每次可以使用工具。 ZSH_COMPDUMP is used only by oh-my-zsh. 🙂 github-actions bot locked as resolved and limited conversation to collaborators Sep 11, 2022 . Today, the prompt itself is incredibly slow: When I type a character it can take over a second until it appears on the screen (and the Oct 24, 2018 · Hey all 👋 I tried clearing my home directory of all things ZSH (bar the . It was a huge step Dec 10, 2021 · portion of code to your . I’m on Mac OS 10. Jan 17, 2025 · Hi, i had to downgrade to ubuntu 22. The third solution, and the solution that fixed the issue for me, is to initialise compinit with the -u flag. I’ve tried both the eval and Homebrew options. I have a few aliases on my . zsh 启动速度慢的终极解决方案 zsh 的交互式体验堪称是最强的——丰富的插件，强大的框架，将 zsh 的交互式体验推向了极致。然而另一方面，过多的插件，臃肿的主题，也让 zsh 变得反应迟钝，反过来破坏了交互式体验。 很多人反映的 zsh 的慢主要体现在两个方面：1. Contribute to zsh-users/zsh development by creating an account on GitHub. 16K subscribers in the zsh community. Apr 11, 2016 · If you see random zsh CPU issues with subshells and compinit/background compilation, as certain IDEs like JetBrains (intellij, pycharm), vscode etc all will call this, and I've had instances where zsh got stuck doing funky things, causing CPU usage to max out. zshrc to change the location where compdump are stored. 3. I also use it as a integrated terminal in VS Code even though it's slow to load. It is written in shell functions based on the features described in the previous chapter, Completion Widgets. zsh # compinit optimization for oh-my-zsh # On slow systems, checking the cached . Jan 1, 2024 · With a way to measure “what is slow?” and to measure if I was making things better, I needed a way to find out what part of my Zsh config was slow. zcompdump files are produced to speed up the running of compinit, Which initializes the shell completion in zsh. Jul 18, 2024 · Over the years, my . zshrc does work for me on Ubuntu. 11 zsh 5. Feb 25, 2022 · I'm using Z shell inside iTerm2 every time I open up a new window or a new tab it takes around 8 - 9 seconds to load. zshenv file Close windows terminal Open warp Select wsl shell (Stuck) Can't open up Expected behavior Should initialized shell and can do other commands Screenshots Operating system Windows Operating system and version Jul 9, 2019 · Apple has announced that in macOS 10. Already have an account? . 5 and i am currently installing zsh and i also want to install some themes and so on, but after first downloading (sudo apt install zsh) i had this compinit e Aug 10, 2020 · 不论是在 WSL、Linux 还是 macOS 上，强大的 zsh 一直是我的不二法宝，而 oh my zsh 自然成了最趁手的瑞士军刀，我自己还编写了数个 oh my zsh 插件和主题。直到有一天我突然发现：见鬼，为什么开个 iTerm2 的 Tab 要等上好几秒钟？ # On slow systems, checking the cached . Jan 31, 2022 · tail is a symptom, it's not the problem. 010 total 2、分析具体哪些因素导致变慢 （1）vim . Jan 8, 2022 · Intro: First of all, why using ZSH instead of bash? Well, I would say that the Tagged with tutorial, linux. Aug 9, 2018 · Three years ago, I switched my shell from bash to zsh. May 27, 2021 · How work the Zsh completion system and how to configure it according to your needs, without any framework or bloated library. Assignees marlonrichert Labels bug Unexpected problem or unintended behavior Projects None yet Milestone No milestone Apr 4, 2019 · 用 Zsh 也有几年的时间，期间各种添加配置，导致了每次启动都巨慢无比。我也换了 fish 用过几天，虽然速度很快，补全功能超爽，但是它最大的问题是不兼容 bash，那还玩个毛，我的开发环境极度依赖 bash 脚本，没办法了，Zsh 还是要接着用的，但是优化速度成了一个大问题。 Feb 27, 2025 · Describe the bug I've followed debugging section to disable my zsh config, but I still can't open my shell in wsl. 15. By then, my shell was taking almost 10 seconds to load. sh when you're done timing your plugins. # compinit optimization for oh-my-zsh # On slow systems, checking the cached . A Note on Profiling with zsh/zprof Jan 31, 2025 · Describe the bug I noticed my shell being slow starting up. -----Original Message----- From: Seth Kurtzberg [mailto:seth@xxxxxxx] Sent: 24 October 2007 15:43 To: John Cooper; 'Zsh Users' Subject: RE: Slow compdump on Vista - no . I followed the instructions on the official documentation and tried with easy example first, but I failed to get it work. its easy enough to manually source the plugins you want but if you really want to use a framework, I would suggest zsh-autocomplete is relatively slow on startup (1-2 seconds, which is not huge… but not small either especially when many scripts are loaded and when the system is overloaded, in which case it can be much more) It's hard to point exactly to a setup that is slow as the time seems to increase in Jun 21, 2020 · I am currently using ubuntu 20 and using zsh + oh my zsh shell . My question is this. zshrc to enable autocompletion. Every time I launch zsh, I get the error mentioned below: zsh: killed command grep -q -Fx "$zcompdump_revision May 14, 2022 · zsh: 16 OptionsThe sense of the single letter options may be inverted by using ‘ + ’ instead of ‘ - ’. Aug 20, 2016 · Hello, I'm new to zsh/oh-my-zsh and installed it the first time on Mac OS X today. Better, but still too slow. You could specify an explicit dump file by compinit -d <dumpfile> in your . See this article: Lmod FAQ If my startup shell is bash or tcsh and I start zsh, why do I get a message that is like: “/etc/zsh/zshrc:48: compinit: function definition file not found” Lmod supports both zsh and ksh. 14s system 47% cpu 0. So plugins approach won't work with it and to install new z a plugin manager needs to be used? Oh My Zsh now includes a version of Zsh-z as z, so what you're trying to do should work; in fact, your . zshrc / . Are you using oh-my-zsh? Inside I've put: touch zshfl. I # compinit optimization for oh-my-zsh # On slow systems, checking the cached . Jan 22, 2022 · 优化 Oh My Zsh 冷启动速度，提升终端交互响应时间，改善用户体验。 Apr 24, 2022 · marlonrichert commented Jun 13, 2022 @AlfredJKwack It's fixed now. Most of this time is spent in compdump. For example, ‘ +n ’ is the short name of ‘ exec ’, and ‘ -n ’ is the short name of its inversion, ‘ noexec ’. zprofile 文件中的一些命令加载耗时，现在新开一个 zsh tab 页异常的慢（3s 以上）。我平时使用命令行的频率很高，所以我决心做一次 zsh 启动性能优化。 优化的结果是3s启动时间变成0. zcompdump 文件等 加载 lib 加载插件 加载自定义配置 加载主题 详细初始化过程可以阅读如下所示的源代码。 最近在启动 vscode 的时候，vscode 总是提示我 terminal 启动的太慢，本来我其实并不怎么在意这个事情的，毕竟 vscode 一月也重启不了几次。但是当我在 iTerm2 上面编译，测试 TiDB 要多开一些窗口的时候，我突然… # On slow systems, checking the cached . It shouldn’t happen as I am using a beefy MacBook Pro. Apr 22, 2020 · 更多问题描述乃至动画截屏，可以参见 这个issue。 zsh + oh-my-zsh 性能问题分析 oh-my-zsh 其实就是提供 zsh 的定制化配置，主要包括Theme主题和各种软件的插件。 oh-my-zsh 插件 通常 oh-my-zsh 中内置或三方社区提供的插件是导致性能降低甚至互相冲突的主要原因。 Apr 10, 2016 · This is the story on how I speed up my terminal load time. The way it does this is slow, so use-omz saves metadata in a separate cache file as a performance optimization. Apr 27, 2020 · The second solution is to set ZSH_DISABLE_COMPFIX=true (or "true" in quotes) in your . zwc. # - 'N' makes the glob Oct 7, 2020 · 🙃 A delightful community-driven (with 2,400+ contributors) framework for managing your zsh configuration. But we can easily fix this slow zsh startup! Instead of always loading your nvm autocompletion, we can command oh-my-zsh to just load nvm ressources on-demand, also known as lazy-loading. zsh 启动耗时测量 首先，我们需要一个客观衡量 zsh Apr 16, 2004 · This is part 2 for the patch I sent in 19767 and should be applied on top of it. Jul 2, 2024 · Lately, my shell (zsh) feels slow to use. Mirror of the Z shell source code repository. Then, when it reads the corrupt file back, trouble ensues. zshrc (well, actually they're in a diffe Raw compinit-oh-my-zsh. zshrc that instructs zsh to create . So, I decided to investigate what is causing the slowness. Sep 11, 2017 · I understand . # # The globbing is a little complicated here: # - '#q' is an explicit glob qualifier that makes globbing work within zsh's [ [ ]] construct. May 16, 2018 · However, this is quite slow! For the actual Zsh git repo, it takes about 200ms to parse. I am wondering whether I… Mar 22, 2018 · . 1 Description This describes the shell code for the ‘new’ completion system, referred to as compsys. # - 'N' makes the glob I then went back to my . 31s user 0. plugin. I have read the zsh documentation on completion which say's &quot;alternatively, an explicit file name can be g 20. 5s to open a terminal feels super slow to me. I found some information on how to debug zsh. However, since you're encountering a "CantOpenFile" error, you might need to create or update the . It should be pasted into your own completion file. Some of the single letter option names refer to an option being off, in which case the inversion of that name refers to the option being on. The issue is that some bash or tcsh users run ksh scripts and need Jun 23, 2020 · 前言终于忍受不了越来越慢的 zsh 启动速度，优化了一下 zsh 的启动速度。 正文环境 iTerm2 3. To reproduce Open WSL via windows terminal Put ZDOTDIR=/ in ~/. 4 using zsh with Oh My Zsh and gh # compinit optimization for oh-my-zsh # On slow systems, checking the cached . After debugging source files I found that the problem was in the oh my zsh source file and that the line that initializes the completion 1、启动耗时分析 正常启动耗时： time zsh -i -c exit zsh -i -c exit 3. zshrc 开启可以用来分析zsh启动耗时 zmodload zsh/zprof (2)执行命令 ~ zsh ~ zprof num calls Nov 13, 2022 · If your zsh is slow to start, I suggest commenting your entire zshrc and then binary searching it to see what's slow (uncomment the top half only, then bottom half, then the top half of the slow half). cache/zsh/ but I believe a zsh plugin created it somehow under homeuser: autoload -Uz compinit . Mar 7, 2024 · Everything returns "Command Not Found" including "Uninstal_oh-my-zsh. Jan 24, 2011 · The default zsh provided by mac is at /usr/bin/zsh and might be using an older version like 5. zcompdump file under ~/. zshrc and added ZSH_COMPDUMP='/dev/null' sourced my . zcompdump. I don't know how much Oh-My-Zsh will respect your attempts to do something other than what it wants you to do. zcompdump file manually: touch May 17, 2020 · Notifications You must be signed in to change notification settings Fork 25. zcompdump* to see if compdump is then faster after rebuilding the cache once. To address that issue, I created antibody. Aug 11, 2020 · Docker 技术鼻祖系列 不论是在 WSL、Linux 还是 macOS 上，强大的 zsh 一直是我的不二法宝，而 oh my zsh 自然成了最趁手的瑞士军刀，我自己还编写了数个 oh my zsh 插件和主题。直到有一天我突然发现：见鬼，为什么开个 iTerm2 的 Tab 要等上好几秒钟？ 1. Any ideas on where I should look to see what could be causing issues? Thanks. 3 can someone help me understand why my Zsh start up is so slow. 01s system 70% cpu 0. If you see random zsh CPU issues with subshells and compinit/background compilation, as certain IDEs like JetBrains (intellij, pycharm), vscode etc all will call this, and I've had instances where zsh got stuck doing funky things, causing CPU usage to max out. Your problem is that you've just about reached your disk quota. I am using macos 72 # Else, enable and cache completions to the desired file. Reminder: don't forget to remove those changes from oh-my-zsh. 启动速度，2. My version: zsh 5. The completion system also now uses the -z option to autoload though kshautoload using users will need to specify it when autoloading compinit. Perhaps this rebasing has somehow contributed to the slowdown? --- John. zcompdump created Does your question imply that zsh with cygwin is more or less functional on vista? Jun 17, 2017 · I love ZSH shell and its themes but it is very slow. The issue is zsh shell is taking abnormally long time to start up. Oh-My-Zsh by default embeds metadata information in the $ZSH_COMPDUMP file. zcompdump` files and how to manage them effectively. Change the value for HISTFILE to set different location to store you zsh command history. - Settings · ohmyzsh/ohmyzsh Wiki Oh-my-zsh startup became very slow after macOS upgrade to Sequoia 15. 04. You can find my existing dotfiles with my zshrc config on my GitHub page. In large projects with a heavy git history this will hang your prompt return time for seconds. 13 votes, 11 comments. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an auto-update tool that makes it easy to keep up with the latest updates from the community. zcompdump is a cache of the configuration of the completion system. Has there been a fix for this problem, or has the situation changed for some other reason? Thanks in advance, Seth Kurtzberg Sometimes my shell (zsh) takes longer to start than usual (I open the terminal, and it hangs a bit until I can input commands). It takes 7 to 10 seconds to load. Jan 13, 2020 · You can also run zsh -xv and see if the zsh process hangs on a particular command, or on the contrary, it just runs through the whole thing without stopping at any point. It suggested to try removing the cache files at ~/. Hi, why Ohmyzsh is really slow, the prompt takes a long time to show up. May 29, 2025 · Gemini explained that compdump and compinit are used to set up completions, but it also noted that compdump is used to build a cache file, which shouldn’t be slow every time (even though it was for me). 26s user 8. zcompdump-* files are dumped configuration files that can speed up completion and that can be deleted safely. I read through this gist and made the appropriate change, but the couple different versions of that hack don't make any difference. When zsh tries to write the . Since then, I’ve added a bunch of stuff to my dotfiles and I’ve been getting increasingly annoyed that my shell is slow to load. " Initially, I thought it was an issue with node, so I uninstalled it and then re-installed it. zshrc` to move away from OMZ, and switched to zinit . It takes nearly a minute for a new zsh shell to start up. zcompdump created Does your question imply that zsh with cygwin is more or less functional on vista? Dec 11, 2017 · 25 . I have some basic understanding of how zsh completion works, and knows a little about "zcompdump", but just a little. qknu eotpcy yobdpk ysv rkm ipommemb otsin orcceli ybsv nurjvv kjlacft udvlq ifoftw wtqz zltxeju