Go1.10導入予定のキャッシュビルド について golang.tokyo #11

Souzoh confidential and proprietary Who? 2

Souzoh confidential and proprietary 自己紹介 ● Koichi Shiraishi (@zchee) ● GitHub: zchee ● Twitter: _zchee_ ● Go ｼｶｶｹﾅｲ ○ Go歴: 2.5年 ○ エンジニア歴: 4ヶ月 ● Mercari / Souzoh ソリューションチーム所属 3

Souzoh confidential and proprietary プロジェクト / コントリビュート ● github.com/zchee/resume ○ zchee/docker-machine-driver-xhyve ○ zchee/nvim-go ○ nsf/gocode ○ moby/hyperkit ○ docker/machine ○ gperftools/gperftools (TC Malloc) ○ tmux/tmux ○ google/flatbuffers ○ etc... 4

Souzoh confidential and proprietary 宣伝 5

Souzoh confidential and proprietary 6 https://www.wantedly.com/projects/171425

Souzoh confidential and proprietary はい 7

Souzoh confidential and proprietary Go1.10導入予定のキャッシュビルドに ついて 8

Souzoh confidential and proprietary 皆さん Go devel 使ってますか？ 9

Souzoh confidential and proprietary ぼくは業務で使ってます！！ 10

Souzoh confidential and proprietary Goに 遂にキャッシュビルドが導入されまし た 11

Souzoh confidential and proprietary 12 現在、 ● 1.10beta1 ● devel で利用可能です

Souzoh confidential and proprietary golang/go キャッシュビルド導入 13 ● rcs: cmd/go/internal/cache: implement build artifact cache ○ https://github.com/golang/go/commit/1114d403fa7d16247a3c569978290d0827f224a1 ● rcs: cmd/go: cache built packages ○ https://github.com/golang/go/commit/de4b6ebf5d0a12f57ace43948b8b1b90f200fae9

Souzoh confidential and proprietary ● GOCACHE環境変数が増えた ○ go env GOCACHE ○ キャッシュファイルが保存されるところ ● sha256でハッシュ化され保存される ● 二回目以降のビルド時から使用され、既にビルド時間の短縮に繋がっている ● 雰囲気はccacheみたいな感じ ○ 実装までは まだ追えてません 時間がないので省略 golang/go キャッシュビルド導入 14

Souzoh confidential and proprietary Before this CL: 102.72u 15.29s 21.98r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 105.99u 15.55s 22.71r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 106.49u 15.70s 22.82r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 107.09u 15.72s 22.94r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 108.19u 15.85s 22.78r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 108.92u 16.00s 23.02r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 109.25u 15.82s 23.05r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 109.57u 15.96s 23.11r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 109.86u 15.97s 23.17r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 110.50u 16.05s 23.37r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... golang/go ビルド時間の違い (github.com/juju/juju/cmd/jujud) 15

Souzoh confidential and proprietary golang/go After this CL: 113.66u 17.00s 24.17r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 3.85u 0.68s 3.49r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 3.98u 0.72s 3.63r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 4.07u 0.72s 3.57r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 3.98u 0.70s 3.43r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 4.58u 0.70s 3.58r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 3.90u 0.70s 3.46r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 3.85u 0.71s 3.52r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 3.70u 0.69s 3.64r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... 3.79u 0.68s 3.41r go build -o /tmp/jujud github.com/juju/juju/cmd/jujud ... ビルド時間の違い (github.com/juju/juju/cmd/jujud) 16

Souzoh confidential and proprietary 今後に期待しつつ 1.10beta1で 恩恵を受けましょう！ 17

Souzoh confidential and proprietary が、 DWARF辺りのバグがあ り、 cgoビルドが落ちます 18

Souzoh confidential and proprietary ● cmd/go: running dsymutil failed: signal: segmentation fault ○ https://github.com/golang/go/issues/23046 ● cmd/compile: fix bug with DWARF abstract functions ○ https://go-review.googlesource.com/c/go/+/83135 golang/go DWARFバグ 19

Souzoh confidential and proprietary ご静聴ありがとうございました！ 20