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2.5gb on small project #28540
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What is the file type of the data files?
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What is the file type of the data files?
They are all javascript and json files.
Vscode takes a while to shoot up the memory. When it does, the ram usage goes up to 2.5gb and starts to freeze some features.Does it reproduce when starting with
code --disable-extensions?- Yes, it does. I found out that the process “ts/js language features” is the responsible for the 2.5gb usage. When i manually disabled the feature, it starts to work normally. But only without JS intellisense features, and thats sad :/ Em ter, 13 de nov de 2018 às 07:33, Christof Marti <notifications@github.com> escreveu:…Does it reproduce when starting with code --disable-extensions? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <https://github.com/Microsoft/vscode/issues/62922#issuecomment-438198065>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AQ_i6VoFW1gVR_7fKcElraQrdlp9Rbyzks5uupH7gaJpZM4YYn5e> .
- assigned and unassigned
on Nov 13, 2018 Eduardo Souza (@edunsouza) Can you share those source files?
Matt Bierner (@mjbvz) of course I can! And I'll be happy if I can help to find out the problem.
The files are available on the repository: https://github.com/edunsouza/communicator
Tested using typescript@3.2.0-dev.20181114
Switching between the js files in
dataset/I can still easily get up to over a GB. Seems mostly to happen after switching to another js file not under dataset.Logs:
tsserver.logNathan Shively-Sanders (@sandersn) and Anders Hejlsberg (@ahejlsberg), any ideas on how we could do better here?
The issue looks to be with the
dataset/afinn/afinn.jsfile. It contains an array literal with 30K+ elements specified as object literals:module.exports = [ {texto: ";)", sentimento: 1, ";)": 1}, {texto: ";@", sentimento: -1, ";@": -1}, {texto: ";*", sentimento: -1, ";*": -1}, {texto: ";**", sentimento: -1, ";**": -1}, {texto: ";~", sentimento: -1, ";~": -1}, ... ];
The reverse mapping pattern means that each object literal has a unique type. To make matters worse, object literal normalization (#19513) causes us to expand into 30K+ unique types with 30K+ properties each (!!!). We then attempt to perform subtype reduction on the set of types in order to make a union type. This ends up generating enormous amounts of work. If I reduce down to 2500 unique types we still take close to 30 seconds to type check, so with 30K+ types we'll effectively take forever.
I'm thinking we should consider a governor on union subtype reduction. Given that is an O(n^2) operation, perhaps we limit subtype reduction to unions with 500 or less constituents.
Reacted by Nathan Shively-Sanders, Eduardo Souza, Cardin Lee and Bnaya PeretzOops, meant to close the old PR, not the issue.
- locked as resolved and limited conversation to collaborators
on Oct 21, 2025
I have a small project of Natural Language Processing and there are 2 files with 37k lines, which contains the datasets. The problem occurs even when i'm not using those files. Not even opening the files. I have to use other editor to run "node index.js" -my main fail.
I dont know how the problem starts, but when i open the vscode editor, it goes up to 2.5gb of ram on the startup. I dont know what is happening.