Bug 127070 SVG small font is always antialiased
SVG uses glyphs to render fonts, which cause small fonts to be always anti-aliased (making them slightly blurry), and "low quality SVG" (no antialiasing) text to be almost unreadable. As a more minor side-effect this also causes the SVG source to be not very readable and large in size.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGRendererImpl.java
final Bounds boEllipse = ( (OvalRenderEvent) pre ).getBounds( );
			elm = svggc.createOval( boEllipse.getLeft( ),
					boEllipse.getTop( ),
					boEllipse.getWidth( ),
					boEllipse.getHeight( ) );
		}
		else if ( pre instanceof RectangleRenderEvent )
		{
			final Bounds boRect = ( (RectangleRenderEvent) pre ).getBounds( );
			elm = svggc.createRect(boRect.getLeft(), boRect.getTop(), boRect.getWidth(), boRect.getHeight());
		}
		else if ( pre instanceof ArcRenderEvent )
		{
			final ArcRenderEvent are = (ArcRenderEvent) pre;
			
			if ( are.getInnerRadius( ) >= 0
					&& are.getOuterRadius( ) > 0
					&& are.getInnerRadius( ) < are.getOuterRadius( ) )
			{
				Shape outerArc = new Arc2D.Double( are.getTopLeft( ).getX( )
						+ ( are.getWidth( ) - 2 * are.getOuterRadius( ) )
						/ 2,
						are.getTopLeft( ).getY( )
								+ ( are.getHeight( ) - 2 * are.getOuterRadius( ) )
								/ 2,
						2 * are.getOuterRadius( ),
						2 * are.getOuterRadius( ),
						are.getStartAngle( ),
						are.getAngleExtent( ),
						Arc2D.PIE );