Hi @JakubMisek, this is the shared memory. I updated the PHP Tool (1.03774 ) and VSCODE to the latest version in these days:
Version: 1.37.1
Commit: f06011ac164ae4dc8e753a3fe7f9549844d15e35
Date: 2019-08-15T16:17:25.463Z
Electron: 4.2.7
Chrome: 69.0.3497.128
Node.js: 10.11.0
V8: 6.9.427.31-electron.0
OS: Linux x64 5.2.0-8.2-liquorix-amd64
Now the memory consumption is under 700MB.
memory usage