@@ -11,6 +11,7 @@ import (

 	"github.com/docker/docker/daemon/execdriver"

 	"github.com/docker/docker/pkg/broadcastwriter"

 	"github.com/docker/docker/pkg/ioutils"

+	"github.com/docker/docker/pkg/pools"

 	"github.com/docker/docker/pkg/stringid"

 	"github.com/docker/docker/runconfig"

 )

@@ -183,7 +184,7 @@ func (d *Daemon) ContainerExecStart(execName string, stdin io.ReadCloser, stdout

 		go func() {

 			defer w.Close()

 			defer logrus.Debugf("Closing buffered stdin pipe")

-			io.Copy(w, stdin)

+			pools.Copy(w, stdin)

 		}()

 		cStdin = r

 	}

@@ -16,6 +16,7 @@ import (

 	"github.com/Sirupsen/logrus"

 	"github.com/docker/docker/daemon/execdriver"

 	"github.com/docker/docker/pkg/parsers"

+	"github.com/docker/docker/pkg/pools"

 	"github.com/docker/docker/pkg/reexec"

 	sysinfo "github.com/docker/docker/pkg/system"

 	"github.com/docker/docker/pkg/term"

@@ -394,12 +395,12 @@ func (t *TtyConsole) AttachPipes(pipes *execdriver.Pipes) error {

 			defer wb.CloseWriters()

 		}

-		io.Copy(pipes.Stdout, t.console)

+		pools.Copy(pipes.Stdout, t.console)

 	}()

 	if pipes.Stdin != nil {

 		go func() {

-			io.Copy(t.console, pipes.Stdin)

+			pools.Copy(t.console, pipes.Stdin)

 			pipes.Stdin.Close()

 		}()

@@ -57,6 +57,14 @@ func (bufPool *BufioReaderPool) Put(b *bufio.Reader) {

 	bufPool.pool.Put(b)

 }

+// Copy is a convenience wrapper which uses a buffer to avoid allocation in io.Copy

+func Copy(dst io.Writer, src io.Reader) (written int64, err error) {

+	buf := BufioReader32KPool.Get(src)

+	written, err = io.Copy(dst, buf)

+	BufioReader32KPool.Put(buf)

+	return

+}

+

 // NewReadCloserWrapper returns a wrapper which puts the bufio.Reader back

 // into the pool and closes the reader if it's an io.ReadCloser.

 func (bufPool *BufioReaderPool) NewReadCloserWrapper(buf *bufio.Reader, r io.Reader) io.ReadCloser {