Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/PlotWithAxes.java
VERTICAL,
				dStart,
				dEnd,
				true,
				aax );
		if ( !scY.isStepFixed( ) )
		{
			final Object[] oaMinMax = scY.getMinMax( );
			while ( !scY.checkFit( ids, laYAxisLabels, iYLabelLocation ) )
			{
				if ( !scY.zoomOut( ) )
				{
					break;
				}
				scY.updateAxisMinMax( oaMinMax[0], oaMinMax[1] );
				int tickCount = scY.computeTicks( ids,
						laYAxisLabels,
						iYLabelLocation,
						VERTICAL,
						dStart,
						dEnd,
						true,
						aax );
				if ( scY.getUnit( ) != null
						&& asInteger( scY.getUnit( ) ) == Calendar.YEAR
						&& tickCount <= 3 )
				{
					break;
				}
			}