try reading ahead to cache rather than stalling
try reading ahead to cache rather than stalling

lovell/libvips,leiyangyou/libvips,jcupitt/libvips,wishabi/libvips,mcanthony/libvips,mcanthony/libvips,lovell/libvips,wishabi/libvips,wishabi/libvips,jcupitt/libvips,leiyangyou/libvips,jcupitt/libvips,leiyangyou/libvips,jcupitt/libvips,wishabi/libvips,mcanthony/libvips,lovell/libvips,lovell/libvips,mcanthony/libvips,leiyangyou/libvips