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Comment by pier25 | Hacker News Reader

Just today I was trying to edit a 15MB JSON file and it was so terribly slow with Sublime Text and wondered if there was something faster out there.

Edit: So I built Xi-Mac and the file opens in a fraction vs ST3 but once it's open performance is just as bad or maybe even worse.

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15 MB seems too small for making problems in any mature editor. Was it perhaps lacking newlines? Pretty much every editor sucks when you have very long lines.

Yes, it was a very, very, very long line.

Is this a debug build or a release build? File loading isn't particularly fast atm (we load the whole file into memory) but once a file is open I can breeze through it..

I'm not really sure. I followed the instructions on the README to build with "xcodebuild".

It's painfully slow, moving the cursor 1 character to the right takes like 10 seconds.

Do you want me to file a bug?

Please!

A 15MB json file is more like a mini database, it'd be faster to run a quick script to import it in a nosql json database and then query from there. It may take 5 minutes but then you won't want to throw yourself out of the window when trying to edit/query it.

There's no technical reason you shouldn't be able to happily scroll through (and edit) a 15MB json file; and search for an arbitrary string should take ~10ms (ballpark from playing around with ripgrep just now), certainly not slow enough to merit big up front indexing costs.

I could open a 15mb file in Eclipse 10 years ago. Idk why we're reinventing the wheel when we have flying cars. If you're not just using a JetBrains editor then you're being a masochist.

Why? jq should be able to make quick work out of it, or Postgres if you need more complex queries.

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