Blue Coat Systems Blue Coat Systems SG Appliance Statistics, Column Heading, Description, Gain

Chapter 5: Statistics

Table 5-1. Table Column Heading Descriptions on the Proxied Sessions Page (Continued)

Column Heading	Description
Server Bytes	Represents the number of bytes (to and from the server) at the socket
	level on the server connection. All application-level bytes are counted,
	including application overhead such as HTTP headers, CIFS headers,
	and so on.
	If the traffic is flowing through an ADN tunnel, the bytes are counted
	after ADN optimization, meaning that compressed byte counts are
	displayed.
	TCP and IP headers, packet retransmissions, and duplicate packets are
	not counted.
	See “About the Byte Totals” on page 83 for more information.
Gain	Displays the bandwidth gain for the session. The calculation is:
	(Client Bytes - Server Bytes)/ Server Bytes
	When the request results in a pure cache hit, this column displays
	Cache Hit.
C	Compression. When displayed in color, this icon indicates that an ADN
	Tunnel is in use and gzip compression is active in either direction on
	that tunnel.
	This icon has three states:
	•	Active (color icon)
	•	Inactive (gray icon)
	•	Not possible (not displayed)
BC	Byte Caching. When displayed in color, this icon indicates that an ADN
	Tunnel is in use and byte-caching is active in either direction on that
	tunnel
	This icon has three states:
	•	Active (color icon)
	•	Inactive (gray icon)
	•	Not possible (not displayed)

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