Adding some performance numbers from lsp-mode project.

(with-current-buffer "DemoApplication.java"

  (benchmark-run 10 (lsp-request "workspace/symbol" (list :query "S"))))

;; Emacs from master
=> (4.203047857 0 0.0)

;; tested with emacs compiled with 1mb buffer.
=> (3.132925793 0 0.0)

Thanks,

Ivan