x/tools/gopls: run completion using partial type checking of current package

[xuhezhong]

gopls version

Build info

golang.org/x/tools/gopls v0.15.3
golang.org/x/tools/gopls@v0.15.3 h1:zbdOidFrPTc8Bx0YrN5QKgJ0zCjyGi0L27sKQ/bDG5o=
github.com/BurntSushi/toml@v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
github.com/google/go-cmp@v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
golang.org/x/exp/typeparams@v0.0.0-20221212164502-fae10dda9338 h1:2O2DON6y3XMJiQRAS1UWU+54aec2uopH3x7MAiqGW6Y=
golang.org/x/mod@v0.15.0 h1:SernR4v+D55NyBH2QiEQrlBAnj1ECL6AGrA5+dPaMY8=
golang.org/x/sync@v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
golang.org/x/sys@v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
golang.org/x/telemetry@v0.0.0-20240209200032-7b892fcb8a78 h1:vcVnuftN4J4UKLRcgetjzfU9FjjgXUUYUc3JhFplgV4=
golang.org/x/text@v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
golang.org/x/tools@v0.18.1-0.20240412183611-d92ae0781217 h1:uH9jJYgeLCvblH0S+03kFO0qUDxRkbLRLFiKVVDl7ak=
golang.org/x/vuln@v1.0.1 h1:KUas02EjQK5LTuIx1OylBQdKKZ9jeugs+HiqO5HormU=
honnef.co/go/tools@v0.4.6 h1:oFEHCKeID7to/3autwsWfnuv69j3NsfcXbvJKuIcep8=
mvdan.cc/gofumpt@v0.6.0 h1:G3QvahNDmpD+Aek/bNOLrFR2XC6ZAdo62dZu65gmwGo=
mvdan.cc/xurls/v2@v2.5.0 h1:lyBNOm8Wo71UknhUs4QTFUNNMyxy2JEIaKKo0RWOh+8=
go: go1.22.0

go env

set GO111MODULE=on
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\value\AppData\Local\go-build
set GOENV=E:\Users\value\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=D:\gez\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=D:\\gez
set GOPRIVATE=
set GOPROXY=https://goproxy.cn/
set GOROOT=C:\Program Files\Go
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLCHAIN=auto
set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=go1.22.0
set GCCGO=gccgo
set GOAMD64=v1
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=D:\gez\src\rent-manager\go.mod
set GOWORK=
set CGO_CFLAGS=-O2 -g
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-O2 -g
set CGO_FFLAGS=-O2 -g
set CGO_LDFLAGS=-O2 -g
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=C:\Users\value\AppData\Local\Temp\go-build1699389175=/tmp/go-build -gno-record-gcc-switches

What did you do?

no

What did you see happen?

completion is slow

What did you expect to see?

How to improve the completion speed

Editor and settings

{
"git.autofetch": true,
"go.addTags":{
"tags": "json",
"options": "",
"transform": "camelcase"
},
"go.lintOnSave":"package",
"go.vetOnSave": "off",
"go.lintTool":"golangci-lint",
"go.lintFlags":[
// "-min_confidence=0.9",
// "all,-ST1020,-ST1003,-ST1006"
],
"go.formatTool":"gofmt",
"go.testFlags": [
"-v",
"-count=1"
],
"go.useLanguageServer": true,
"go.languageServerFlags": [
"-remote=auto","-logfile=auto","-debug=localhost:5050","-rpc.trace"
],
"[go]": {
"editor.snippetSuggestions":"top",
"editor.formatOnSave": true,
"editor.codeActionsOnSave": {
"source.organizeImports": "explicit"
},
"editor.suggest.snippetsPreventQuickSuggestions": false
},
"editor.quickSuggestions": {
"strings": true
},
"gopls": {
"ui.completion.completeFunctionCalls": true,
"ui.diagnostic.staticcheck": false,
"ui.completion.usePlaceholders": false,
"ui.completion.matcher": "Fuzzy",
"ui.semanticTokens": true,
"ui.codelenses": {
"gc_details": false,
"generate": false,
"regenerate_cgo": true,
"tidy": false,
"upgrade_dependency": false,
"vendor": false,
"test": false
},
"ui.completion.completionBudget": "1s",
"ui.vulncheck":"On",
"allExperiments": true,
"ui.completion.experimentalPostfixCompletions": true,
"build.templateExtensions": [
".go"
],
"zeroConfig": false,
"analyses": {
"nilness": false
}
},
"cSpell.diagnosticLevel": "Hint",
"cSpell.userWords": [
"bson",
"Infof",
"querys"
],
"cSpell.showCommandsInEditorContextMenu": false,
"security.workspace.trust.untrustedFiles": "open",
"window.openFoldersInNewWindow": "on",
"go-struct-tag.cases": [
"camel"
],
"workbench.iconTheme": "material-icon-theme",
"go.inlayHints.constantValues": true,
"extensions.ignoreRecommendations": true,
"go.editorContextMenuCommands": {
"toggleTestFile": false,
"addImport": false,
"testCoverage": false,
"playground": false
},
"json.schemaDownload.enable": false,
"workbench.editorAssociations": {
".exe": "default"
},
"go.toolsEnvVars": {},
"leetcode.endpoint": "leetcode-cn",
"leetcode.defaultLanguage": "golang",
"leetcode.workspaceFolder": "C:\Users\value\.leetcode",
"leetcode.hint.configWebviewMarkdown": false,
"leetcode.hint.commandShortcut": false,
"fittencode.inlineCompletion.enable": true,
"go.toolsManagement.autoUpdate": true,
"go.delveConfig": {},
"files.associations": {
".go":"go"
},
"go.inlayHints.rangeVariableTypes": true,
"leetcode.hint.commentDescription": false,
"Lingma.LocalStoragePath": "C:\Users\value\.lingma"
}

Logs

$/cancelRequest last: 0s, longest: 25.3429ms
$/progress last: 0s, longest: 558.2µs
client/registerCapability last: 2.3282ms, longest: 22.2058ms
gocommand.Runner.Run last: 1.4592542s, longest: 1.4592542s
gocommand.Runner.RunRaw last: 1.4592542s, longest: 1.4592542s
gopls/handshake last: 279.2767ms, longest: 279.2767ms
initialize last: 1.4941373s, longest: 1.4941373s
initialized last: 3.5351ms, longest: 3.5351ms
protocol.canceller last: 0s, longest: 25.3429ms
queued last: 0s, longest: 7.7154184s
textDocument/codeAction last: 6.9961ms, longest: 7.7154184s
textDocument/codeLens last: 2.028921s, longest: 7.1807699s
textDocument/completion last: 1.8880714s, longest: 5.6789887s
textDocument/didChange last: 1.11ms, longest: 6.3120549s
textDocument/didOpen last: 11.552ms, longest: 11.552ms
textDocument/didSave last: 1.0021ms, longest: 3.0005ms
textDocument/documentLink last: 25.8237ms, longest: 5.3391951s
textDocument/documentSymbol last: 1.2762219s, longest: 7.1998994s
textDocument/foldingRange last: 12.4753ms, longest: 5.9395043s
textDocument/formatting last: 46.6567ms, longest: 46.6567ms
textDocument/inlayHint last: 1.8887478s, longest: 8.048331s
textDocument/publishDiagnostics last: 15.8979ms, longest: 22.8799ms
textDocument/semanticTokens/full last: 1.1832525s, longest: 6.3649223s
textDocument/semanticTokens/range last: 5.9401569s, longest: 5.9401569s
textDocument/signatureHelp last: 2.0988934s, longest: 2.0988934s
window/logMessage last: 511.8µs, longest: 59.5579ms
window/workDoneProgress/create last: 791.6519ms, longest: 791.6519ms
workspace/configuration last: 7.248ms, longest: 7.248ms
workspace/didChangeWatchedFiles last: 17.9947ms, longest: 1.8196535s

[gabyhelp]

Similar Issues

• x/tools/gopls: slow performance #43259
• x/tools/gopls: IDE shows undeclared name on every symbols when accessing from other files #34951
• x/tools/gopls: not working #37119
• x/tools/gopls: no completion/suggestion/linting working on large projects #66787
• x/tools/gopls: feedback is extremely slow with large monorepo #44188
• x/tools/gopls: gopls falls behind user input in large repository #45089
• x/tools/gopls: gopls compiles after every newstart on large projects #53332
• x/tools/gopls: don't load invalid build configurations unless they contain Go code #43093
• x/tools/gopls: go.mod: Please provide completions for package versions #58769
• x/tools/gopls: Completion not working in modules with "vendor" as their name #54071

_{(Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.)}

[xuhezhong]

unhelpful @gabyhelp

[findleyr]

That is indeed quite slow.

I see that your completion budget is 1s. Is there a reason you increased it from the default of 100ms? Decreasing the budget will cause completion to abort its deep search sooner.

[xuhezhong]

I tried to change it to 100ms, and it looked slower.

$/cancelRequest last: 0s, longest: 6.288ms
$/progress last: 5.0001ms, longest: 5.0001ms
$/setTrace last: 0s, longest: 0s
client/registerCapability last: 5.2767ms, longest: 122.8193ms
gocommand.Runner.Run last: 4.0762691s, longest: 4.0762691s
gocommand.Runner.RunRaw last: 4.0762691s, longest: 4.0762691s
gopls/handshake last: 460.2974ms, longest: 460.2974ms
initialize last: 4.1573762s, longest: 4.1573762s
initialized last: 3.3838ms, longest: 3.3838ms
protocol.canceller last: 0s, longest: 6.1035ms
queued last: 579.8669ms, longest: 11.6191875s
textDocument/codeAction last: 1.8757006s, longest: 11.6218308s
textDocument/codeLens last: 2.861111s, longest: 8.334985s
textDocument/completion last: 2.4040361s, longest: 11.6619728s
textDocument/definition last: 2.2651238s, longest: 5.2827827s
textDocument/didChange last: 573.1µs, longest: 6.3075205s
textDocument/didOpen last: 73.3626ms, longest: 73.3626ms
textDocument/didSave last: 16.0028ms, longest: 16.0028ms
textDocument/documentHighlight last: 2.1993ms, longest: 665.4831ms
textDocument/documentLink last: 1.6344522s, longest: 8.2514029s
textDocument/documentSymbol last: 585.1718ms, longest: 11.6356173s
textDocument/foldingRange last: 1.3212396s, longest: 6.9483335s
textDocument/formatting last: 1.6698799s, longest: 1.6698799s
textDocument/hover last: 213.2719ms, longest: 310.9122ms
textDocument/inlayHint last: 2.2132582s, longest: 10.7460395s
textDocument/publishDiagnostics last: 639.9µs, longest: 524.3932ms
textDocument/semanticTokens/full last: 1.5372664s, longest: 9.6960405s
textDocument/semanticTokens/range last: 404.7153ms, longest: 4.1919914s
textDocument/signatureHelp last: 1.9193696s, longest: 1.9193696s
window/logMessage last: 999.3µs, longest: 65.0027ms
window/workDoneProgress/create last: 666.9018ms, longest: 666.9018ms
workspace/configuration last: 4.92ms, longest: 36.7196ms
workspace/didChangeConfiguration last: 1.0024ms, longest: 1.0024ms
workspace/didChangeWatchedFiles last: 4.0003ms, longest: 4.0003ms

Is the package is too large?
Initializing workspace... done (4.1950882s)
Gathering bug reports... done (1.6791823s)
Querying memstats... done (7.8943ms)
Querying workspace stats... done (1.0903ms)
Collecting directory info... done (71.4162ms)
{
"BugReports": [],
"CacheDir": "C:\Users\value\AppData\Local\gopls\0418dd66",
"DirStats": {
"Files": 4053,
"TestdataFiles": 0,
"GoFiles": 1500,
"ModFiles": 15,
"Dirs": 452
},
"GOARCH": "amd64",
"GOOS": "windows",
"GOPACKAGESDRIVER": "",
"GOPLSCACHE": "",
"GoVersion": "go1.22.0",
"GoplsVersion": "v0.15.3",
"InitialWorkspaceLoadDuration": "4.1950882s",
"MemStats": {
"HeapAlloc": 37154912,
"HeapInUse": 50454528,
"TotalAlloc": 91443112
},
"WorkspaceStats": {
"Files": {
"Total": 2134,
"Largest": 879006,
"Errs": 0
},
"Views": [
{
"GoCommandVersion": "go1.22.0",
"AllPackages": {
"Packages": 297,
"LargestPackage": 236,
"CompiledGoFiles": 2427,
"Modules": 39
},
"WorkspacePackages": {
"Packages": 38,
"LargestPackage": 150,
"CompiledGoFiles": 698,
"Modules": 1
},
"Diagnostics": 2
}
]
}
}

Then I found that the use of cpu became higher when completing the code.

Is the performance of cpu too poor?

[findleyr]

Thanks. Indeed, that is too slow. It also doesn't look like your workspace is that large. Do you always experience this, even in a tiny hello world program?

I note that it is not just completion: everything looks very slow from the timings you shared.

Can you please start gopls with -debug=localhost:8080 (or any port you choose), and then grab a profile?

go tool pprof -seconds=10 http://localhost:8080/debug/pprof/profile

Run that command from a terminal, do some typing when gopls is slow. After 10 seconds, the go command will jump into a pprof shell. I'd be interested in the output of top -cum 30. This will help me understand the cause of the slowness you experience.

[xuhezhong]

Do you always experience this, even in a tiny hello world program?
No, in a tiny hello world program is very good.
PS C:\Users\value> go tool pprof -seconds=10 http://localhost:5050/debug/pprof/profile
Fetching profile over HTTP from http://localhost:5050/debug/pprof/profile?seconds=10
Please wait... (10s)
Saved profile in C:\Users\value\pprof\pprof.gopls.exe.samples.cpu.008.pb.gz
File: gopls.exe
Build ID: D:\gez\bin\gopls.exe2024-06-19 11:34:19.2023561 +0800 CST
Type: cpu
Time: Jun 21, 2024 at 11:06am (CST)
Duration: 10.15s, Total samples = 8.90s (87.67%)
Entering interactive mode (type "help" for commands, "o" for options)
(pprof) top -cum 30
Showing nodes accounting for 8.76s, 98.43% of 8.90s total
Dropped 94 nodes (cum <= 0.04s)
flat flat% sum% cum cum%
0 0% 0% 8.76s 98.43% golang.org/x/tools/internal/fakenet.(*connFeeder).run
8.76s 98.43% 98.43% 8.76s 98.43% runtime.cgocall
0 0% 98.43% 8.76s 98.43% syscall.Syscall6
0 0% 98.43% 8.76s 98.43% syscall.SyscallN
0 0% 98.43% 8.75s 98.31% internal/poll.(*FD).Read
0 0% 98.43% 8.75s 98.31% os.(*File).Read
0 0% 98.43% 8.75s 98.31% os.(*File).read (inline)
0 0% 98.43% 8.75s 98.31% syscall.Read
0 0% 98.43% 8.75s 98.31% syscall.ReadFile (inline)
0 0% 98.43% 8.75s 98.31% syscall.readFile
0 0% 98.43% 0.11s 1.24% golang.org/x/tools/gopls/internal/protocol.Handlers.AsyncHandler.func2.2
0 0% 98.43% 0.11s 1.24% golang.org/x/tools/gopls/internal/protocol.Handlers.MustReplyHandler.func1
0 0% 98.43% 0.08s 0.9% golang.org/x/tools/gopls/internal/lsprpc.(*forwarder).ServeStream.(*forwarder).handler.func3
0 0% 98.43% 0.08s 0.9% golang.org/x/tools/gopls/internal/lsprpc.(*forwarder).ServeStream.ServerHandler.func2
0 0% 98.43% 0.08s 0.9% golang.org/x/tools/gopls/internal/protocol.serverDispatch
0 0% 98.43% 0.06s 0.67% encoding/json.Unmarshal
0 0% 98.43% 0.05s 0.56% encoding/json.(*decodeState).object
0 0% 98.43% 0.05s 0.56% encoding/json.(*decodeState).unmarshal
0 0% 98.43% 0.05s 0.56% encoding/json.(*decodeState).value
(pprof)

[xuhezhong]

When I work under small package, it's very good.

[findleyr]

Wow, that appears to be all disk I/O. Are you perhaps running with a particularly slow filesystem?

Even so, I'd expect that after the initial workspace load disk I/O is not in the fast path of most operations: they should all be hitting cache. I wonder if it is related to the file cache.

Another mystery: I don't see an entry point for the reads in top -cum. I would expect to see a gopls function higher up. Can you perhaps run web for that pprof session, and share the resulting image?

CC @adonovan

[xuhezhong]

Are you perhaps running with a particularly slow filesystem?
No, it's a normal filesystem.windows10,16GB RAM, CPU i5, 240GB SSD.

Even so, I'd expect that after the initial workspace load disk I/O is not in the fast path of most operations: they should all be hitting cache. I wonder if it is related to the file cache.
Did I used flags -remote=auto, so can't see cache?

[xuhezhong]

When I modify flag to serve.

$/cancelRequest last: 0s, longest: 1.0013ms
$/progress last: 0s, longest: 0s
Server.diagnose last: 3.1895002s, longest: 4.3136033s
Server.diagnoseChangedFiles last: 2.5634308s, longest: 2.5634308s
Server.diagnoseSnapshot last: 2.3779088s, longest: 5.7364458s
Server.publishDiagnostics last: 59.5284ms, longest: 111.0395ms
cache.ModTidy last: 4.3049804s, longest: 4.3049804s
cache.ParseGoSrc last: 41.9945ms, longest: 103.9266ms
cache.ParseMod last: 0s, longest: 0s
cache.forEachPackage last: 2.5634308s, longest: 2.882628s
cache.importsState.refreshProcessEnv last: 1.0111812s, longest: 1.0111812s
cache.importsState.runProcessEnvFunc last: 1.2375499s, longest: 1.2375499s
cache.readFile last: 0s, longest: 22.9965ms
cache.resolveImportGraph last: 9.0016ms, longest: 84.3816ms
cache.sharedModCache.refreshDir last: 118.9732ms, longest: 118.9732ms
cache.snapshot.ModTidy last: 0s, longest: 4.3049804s
cache.snapshot.PackageDiagnostics last: 2.5634308s, longest: 2.882628s
cache.snapshot.clone last: 1.0034ms, longest: 11.1503ms
cache.snapshot.load last: 3.3542077s, longest: 3.3542077s
cache.typeCheckBatch.checkPackage last: 72.6665ms, longest: 2.8756253s
cache.typeCheckBatch.checkPackageForImport last: 186.9995ms, longest: 282.9148ms
cache.typeCheckBatch.importPackage last: 90.0169ms, longest: 90.0169ms
client/registerCapability last: 1.8403ms, longest: 8.4835ms
completion.Completion last: 98.1118ms, longest: 1.777517s
gocommand.Runner.Run last: 4.3003531s, longest: 4.3003531s
gocommand.Runner.RunRaw last: 4.3003531s, longest: 4.3003531s
golang.AllImportsFixes last: 1.2375499s, longest: 1.2375499s
golang.DocumentSymbols last: 969.4µs, longest: 1.5246ms
golang.Format last: 14.0052ms, longest: 20.0023ms
golang.Hover last: 1.0632ms, longest: 1.0632ms
golang.InlayHint last: 0s, longest: 895.2011ms
golang.SignatureHelp last: 2.3401226s, longest: 2.3401226s
golang.computeTextEdits last: 1.0021ms, longest: 1.0021ms
imports.FixImports last: 1.2356817s, longest: 1.2356817s
initialize last: 2.1969ms, longest: 2.1969ms
initialized last: 4.2398869s, longest: 4.2398869s
lsp.Server.codeAction last: 396.7522ms, longest: 2.8964613s
lsp.Server.codeLens last: 0s, longest: 0s
lsp.Server.completion last: 98.6212ms, longest: 1.7785167s
lsp.Server.didChange last: 15.0011ms, longest: 15.4615ms
lsp.Server.didChangeWatchedFiles last: 2.0047ms, longest: 3.0027ms
lsp.Server.didOpen last: 170.9577ms, longest: 170.9577ms
lsp.Server.didSave last: 996.5µs, longest: 996.5µs
lsp.Server.documentLink last: 36.4166ms, longest: 63.831ms
lsp.Server.documentSymbol last: 969.4µs, longest: 1.5246ms
lsp.Server.foldingRange last: 3.0065ms, longest: 6.0124ms
lsp.Server.formatting last: 15.0042ms, longest: 20.0023ms
lsp.Server.hover last: 1.0632ms, longest: 1.0632ms
lsp.Server.initialize last: 618.5µs, longest: 618.5µs
lsp.Server.initialized last: 4.2398869s, longest: 4.2398869s
lsp.Server.inlayHint last: 0s, longest: 895.2011ms
lsp.Server.semanticTokens last: 7.5719ms, longest: 1.5393922s
lsp.Server.signatureHelp last: 2.3401226s, longest: 2.3401226s
mod.Diagnostics last: 0s, longest: 4.3049804s
mod.UpgradeDiagnostics last: 0s, longest: 0s
mod.VulnerabilityDiagnostics last: 0s, longest: 0s
queued last: 0s, longest: 4.2198357s
snapshot.Analyze last: 3.1855028s, longest: 3.1855028s
textDocument/codeAction last: 531.2793ms, longest: 2.89923s
textDocument/codeLens last: 1.1061564s, longest: 2.2677262s
textDocument/completion last: 2.2339456s, longest: 3.3155522s
textDocument/didChange last: 19.0016ms, longest: 1.7025203s
textDocument/didOpen last: 4.3934722s, longest: 4.3934722s
textDocument/didSave last: 996.5µs, longest: 1.5579ms
textDocument/documentLink last: 979.076ms, longest: 2.0792358s
textDocument/documentSymbol last: 1.1071258s, longest: 2.6728378s
textDocument/foldingRange last: 1.0766877s, longest: 2.1094241s
textDocument/formatting last: 460.7789ms, longest: 813.4608ms
textDocument/hover last: 1.1005ms, longest: 2.2910967s
textDocument/inlayHint last: 1.2324873s, longest: 2.0673011s
textDocument/publishDiagnostics last: 0s, longest: 1.5235ms
textDocument/semanticTokens/full last: 840.3362ms, longest: 2.5252431s
textDocument/signatureHelp last: 2.3411431s, longest: 2.3411431s
window/logMessage last: 0s, longest: 538.6µs
window/workDoneProgress/create last: 21.1334ms, longest: 21.1334ms
work.Diagnostics last: 0s, longest: 0s
workspace/configuration last: 8.3857ms, longest: 8.3857ms
workspace/didChangeWatchedFiles last: 2.0047ms, longest: 11.0026ms

PS C:\Users\value> go tool pprof -seconds=20 http://localhost:5050/debug/pprof/profile
Fetching profile over HTTP from http://localhost:5050/debug/pprof/profile?seconds=20
Please wait... (20s)
Saved profile in C:\Users\value\pprof\pprof.gopls.exe.samples.cpu.010.pb.gz
File: gopls.exe
Build ID: D:\gez\bin\gopls.exe2024-06-19 11:34:19.2023561 +0800 CST
Type: cpu
Time: Jun 22, 2024 at 9:09pm (CST)
Duration: 20.18s, Total samples = 87.42s (433.20%)
Entering interactive mode (type "help" for commands, "o" for options)
(pprof) top -cum 30
Showing nodes accounting for 26.91s, 30.78% of 87.42s total
Dropped 1075 nodes (cum <= 0.44s)
Showing top 30 nodes out of 220
flat flat% sum% cum cum%
0 0% 0% 29.50s 33.75% golang.org/x/sync/errgroup.(*Group).Go.func1
0 0% 0% 27s 30.89% go/types.(*Checker).Files (inline)
0 0% 0% 27s 30.89% go/types.(*Checker).checkFiles
0.37s 0.42% 0.42% 26.64s 30.47% go/ast.Walk
0 0% 0.42% 26.54s 30.36% golang.org/x/tools/gopls/internal/cache.storePackageResults
0 0% 0.42% 26.34s 30.13% sync.(*Once).Do (inline)
0 0% 0.42% 26.34s 30.13% sync.(*Once).doSlow
0 0% 0.42% 25.63s 29.32% golang.org/x/tools/gopls/internal/cache.(*syntaxPackage).xrefs
0 0% 0.42% 25.63s 29.32% golang.org/x/tools/gopls/internal/cache.(*syntaxPackage).xrefs.func1
0 0% 0.42% 25.63s 29.32% golang.org/x/tools/gopls/internal/cache/xrefs.Index
0 0% 0.42% 25.48s 29.15% go/ast.Inspect (inline)
0.01s 0.011% 0.43% 25.45s 29.11% go/ast.walkDeclList (inline)
0.04s 0.046% 0.48% 25.36s 29.01% go/types.(*Checker).processDelayed
0.01s 0.011% 0.49% 25.27s 28.91% go/types.(*Checker).funcBody
0 0% 0.49% 25.26s 28.89% go/types.(*Checker).funcDecl.func1
0 0% 0.49% 25.18s 28.80% go/ast.walkStmtList (inline)
0.10s 0.11% 0.61% 25.09s 28.70% go/ast.inspector.Visit
0.07s 0.08% 0.69% 25.08s 28.69% go/types.(*Checker).stmtList
0.31s 0.35% 1.04% 25.05s 28.65% go/types.(*Checker).stmt
0.25s 0.29% 1.33% 24.91s 28.49% golang.org/x/tools/gopls/internal/cache/xrefs.Index.func3
0 0% 1.33% 24.75s 28.31% golang.org/x/tools/gopls/internal/cache.(*Snapshot).forEachPackageInternal.func2
0 0% 1.33% 24.75s 28.31% golang.org/x/tools/gopls/internal/cache.(*typeCheckBatch).checkPackage
0 0% 1.33% 24.75s 28.31% golang.org/x/tools/gopls/internal/cache.(*typeCheckBatch).handleSyntaxPackage
1.55s 1.77% 3.10% 23.43s 26.80% golang.org/x/tools/go/types/objectpath.(*Encoder).For
0.13s 0.15% 3.25% 21.75s 24.88% go/types.(*Checker).rawExpr
0.12s 0.14% 3.39% 21.23s 24.29% go/ast.walkExprList (inline)
0.33s 0.38% 3.76% 20.74s 23.72% go/types.(*Checker).exprInternal
7.08s 8.10% 11.86% 18.47s 21.13% golang.org/x/tools/go/types/objectpath.find
16.54s 18.92% 30.78% 16.54s 18.92% runtime.cgocall
0 0% 30.78% 16.54s 18.92% syscall.SyscallN
(pprof)