* @return string
*/
function setup7zCommand( $file ) {
- $command = "7za a -bd -si " . wfEscapeShellArg( $file );
+ $command = "7za a -bd -si -mx=4 " . wfEscapeShellArg( $file );
// Suppress annoying useless crap from p7zip
// Unfortunately this could suppress real error messages too
$command .= ' >' . wfGetNull() . ' 2>&1';