@Override
	public void read(ChannelHandlerContext ctx) {
		super.read(ctx);
		ByteBuffer buffer = ctx.getBuffer();
		if (buffer.remaining() > 0) {
			buffer.clear();
			num.addAndGet(1);
			long t = System.currentTimeMillis() - time.longValue();
			float xx = num.longValue() / (t * 1.0f) * 1000;
			System.out.println("q/s= " + xx);
		}
		ctx.releaseBuffer();
		this.write(ctx, ByteBuffer.wrap("Hello server".getBytes()));
	}