x/tools/gopls: high memory consumption #45457
Description
What version of Go are you using (go version)?
$ go version go version go1.16.2 linux/amd64
Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (go env)?
Ubuntu 20.04.2 LTS
go env Output
$ go env GO111MODULE="on" GOARCH="amd64" GOBIN="" GOCACHE="/home/mauclair/.cache/go-build" GOENV="/home/mauclair/.config/go/env" GOEXE="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOINSECURE="" GOMODCACHE="/home/mauclair/go/pkg/mod" GONOPROXY="" GONOSUMDB="" GOOS="linux" GOPATH="/home/mauclair/go" GOPRIVATE="" GOPROXY="https://proxy.golang.org,direct" GOROOT="/usr/local/go" GOSUMDB="sum.golang.org" GOTMPDIR="" GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64" GOVCS="" GOVERSION="go1.16.2" GCCGO="gccgo" AR="ar" CC="gcc" CXX="g++" CGO_ENABLED="1" GOMOD="/dev/null" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/home/mauclair/tmp/go-build3185508688=/tmp/go-build -gno-record-gcc-switches"
What did you do?
Using emacs with lsp-mode + gopls, gopls used 10GiB memory
(if it's helpful, this is is a monorepo with a high volume of generated gRPC code)
What did you expect to see?
Lower memory consumption
What did you see instead?
10GiB memory consumed