Closed as not planned
Description
What version of Go are you using (go version)?
$ go version go version go1.16.3 darwin/amd64
Does this issue reproduce with the latest release?
Yes
golang.org/x/tools/gopls v0.6.9
golang.org/x/tools/[email protected] h1:LBBcE2y3Tb4bp79JVLWCQBbvYCFEs5ADGWsQDoSLk1Q=
What operating system and processor architecture are you using (go env)?
go env Output
$ go env GO111MODULE="on" GOARCH="amd64" GOBIN="/Users/bhcleek/go/bin" GOCACHE="/Users/bhcleek/Library/Caches/go-build" GOENV="/Users/bhcleek/Library/Application Support/go/env" GOEXE="" GOFLAGS="-mod=vendor" GOHOSTARCH="amd64" GOHOSTOS="darwin" GOINSECURE="" GOMODCACHE="/Users/bhcleek/go/pkg/mod" GONOPROXY="$INTERNAL_REPOS" GONOSUMDB="" GOOS="darwin" GOPATH="/Users/bhcleek/go" GOPRIVATE="$INTERNAL_REPOS" GOPROXY="https://proxy.golang.org,direct" GOROOT="/usr/local/go" GOSUMDB="sum.golang.org" GOTMPDIR="" GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64" GOVCS="" GOVERSION="go1.16.3" GCCGO="gccgo" AR="ar" CC="clang" CXX="clang++" CGO_ENABLED="1" GOMOD="/Users/bhcleek/src/$MODULE/go.mod" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/f9/d6g779t53gq_20w0zm2f_1zm0000gn/T/go-build3331311271=/tmp/go-build -gno-record-gcc-switches -fno-common"
What did you do?
Start up gopls in our monorepo in module aware mode by opening vscode or Vim w/ vim-go
What did you expect to see?
Similar memory use and performance as when using GOPATH mode.
What did you see instead?
Very high memory use and sluggishness. Using module aware mode, gopls very quickly starts using 10GB of memory or more. Other users internally report even higher memory use.
Performance is generally very sluggish. Completion requests, for example, have a noticable delay before a response is delivered.
In GOPATH mode, memory sits around 300MB and gopls is very responsive.