NVM getting very slow on startup in Bash

[andyhennie]

I love NVM, but I've noticed that NVM is getting really slow during startup. See attached screenshot for what I mean: http://take.ms/LPOv3

Is this a bug or is something wrong on my Mac?

[ljharb]

What's nvm ls and nvm debug print out?

[ljharb]

You can also try adding --no-use to the end of the second nvm line (the one doing the sourcing) to confirm that it's the auto-use code path that's being slow.

[andyhennie]

@ljharb
Adding --no-use makes it superfast, but then it doesnt load node. But I guess it confirms that the auto-use code path is slow. Here are the nvm ls and nvm debug

nvm ls
->       v6.9.1
default -> 6.9.1 (-> v6.9.1)
node -> stable (-> v6.9.1) (default)
stable -> 6.9 (-> v6.9.1) (default)
iojs -> N/A (default)
lts/* -> lts/boron (-> v6.9.1)
lts/argon -> v4.6.1 (-> N/A)
lts/boron -> v6.9.1

nvm debug
nvm --version: v0.32.1
$SHELL: /bin/bash
$HOME: /Users/Andreas
$NVM_DIR: '$HOME/.nvm'
$PREFIX: ''
$NPM_CONFIG_PREFIX: ''
nvm current: v6.9.1
which node: $NVM_DIR/versions/node/v6.9.1/bin/node
which iojs:
which npm: $NVM_DIR/versions/node/v6.9.1/bin/npm
npm config get prefix: $NVM_DIR/versions/node/v6.9.1
npm root -g: $NVM_DIR/versions/node/v6.9.1/lib/node_modules

[ljharb]

Do you have a .nvmrc file anywhere, like ~/.nvmrc?

[andyhennie]

@ljharb the one line I have in that file is
onload-script=npm-autoinit/autoinit

Tried to remove it, didn't make any difference, so added it back.

[ljharb]

@ahennie in a file called nVmrc, you have that line?

Can you provide a little more info on your Mac? Do you have an SSD, how old is it, how fast/much RAM, etc?

[mitermayer]

This is also very slow for me on gentoo linux.

[ljharb]

@mitermayer can you also go through the same steps above and see if you get the same or different results?

[andyhennie]

@ljharb Sorry, that was .nPmrc. I don't have a .nVmrc-file. It must be sw, not hw related. I got Macbook Pro 15" i7, 16gb RAM, SSD. What could it be?

[ljharb]

@ahennie that should be fast enough. Basically it's that nvm use calls into npm config get prefix, which is very slow. I'll keep looking into it.

[andyhennie]

@ljharb thanks. it wasnt slow like this earlier. does the number of global modules affect the speed? other things I can do to speed it up?

[ljharb]

When you say "earlier" do you mean on an earlier version, before I was doing prefix checking? Or do you mean on the same version of nvm?

[carlosjs23]

same issue too.