go env GOOS GOARCH
linux
amd64

diff --git a/go/mysql/conn.go b/go/mysql/conn.go
index 2ac69b54a..53f518d62 100644
--- a/go/mysql/conn.go
+++ b/go/mysql/conn.go
@@ -166,7 +166,7 @@ type Conn struct {
        // Call startEphemeralPacket(length) to get a buffer. If length
        // is smaller or equal than connBufferSize-4, this buffer will be used.
        // Otherwise memory will be allocated for it.
-       buffer []byte
+       //buffer []byte

        // Keep track of how and of the buffer we allocated for an
        // ephemeral packet on the read and write sides.
@@ -179,6 +179,7 @@ type Conn struct {
        // allocated temporary buffers for writes and reads respectively.
        currentEphemeralWriteBuffer *[]byte
        currentEphemeralReadBuffer  *[]byte
+       //_                           [connBufferSize]byte
 }

 // bufPool is used to allocate and free buffers in an efficient way.
@@ -193,7 +194,7 @@ func newConn(conn net.Conn) *Conn {
                reader:   bufio.NewReaderSize(conn, connBufferSize),
                writer:   bufio.NewWriterSize(conn, connBufferSize),
                sequence: 0,
-               buffer:   make([]byte, connBufferSize),
+               //buffer:   make([]byte, connBufferSize),
        }
 }

#!/usr/bin/env bash
set -e
set -x

TMP_GOPATH="/tmp/tmp_gopath"
RESULT_PATH="/tmp/gc_vitess_results"
mkdir -p "$TMP_GOPATH/src/vitess.io"
mkdir -p "$RESULT_PATH"
REPO_PATH="$TMP_GOPATH/src/vitess.io/vitess"
if [ ! -d "$REPO_PATH" ]; then
        git clone https://github.com/LK4D4/vitess.git "$REPO_PATH"
fi

export GOPATH="$TMP_GOPATH"
go get golang.org/x/tools/cmd/benchcmp
go get github.com/kardianos/govendor

cd $REPO_PATH
"$TMP_GOPATH/bin/govendor" sync
git checkout origin/test_branch
go test -run=^$ -bench=BenchmarkParallelMediumQueries -benchmem -cpuprofile="$RESULT_PATH/good.cpu" -trace="$RESULT_PATH/good.trace" ./go/mysql > "$RESULT_PATH/good.txt"
git checkout origin/test_branch_no_buffer
go test -run=^$ -bench=BenchmarkParallelMediumQueries -benchmem -cpuprofile="$RESULT_PATH/bad.cpu" -trace="$RESULT_PATH/bad.trace" ./go/mysql > "$RESULT_PATH/bad.txt"

"$TMP_GOPATH/bin/benchcmp" "$RESULT_PATH/good.txt" "$RESULT_PATH/bad.txt"