Cisco Cisco Collaboration Server Dynamic Content Adapter
DCA 2.01 Administration and Configuration Guide
About DCA Server Load 76
About DCA Server Load
The following factors related to server load can affect DCA performance.
Number of Sessions
Each DCA license is valid for a single DCA server and allows an unlimited number of
seats. However, performance considerations may impose a practical limit on the
number of concurrent sessions the DCA can effectively handle.
seats. However, performance considerations may impose a practical limit on the
number of concurrent sessions the DCA can effectively handle.
As a rough guideline, the DCA 2.01 Minimum configuration should deliver adequate
performance for 40 concurrent sessions. The Enterprise configuration should deliver
adequate performance for 100 or more concurrent sessions. (Minimum and
Enterprise hardware specifications are described in the DCA 2.01 Installation and
Integration Guide.) Note, however, that these limits can be higher or lower, subject
to other factors such as DCA cache size, size and complexity of content, number
simultaneous requests, use of SSL, and so on.
performance for 40 concurrent sessions. The Enterprise configuration should deliver
adequate performance for 100 or more concurrent sessions. (Minimum and
Enterprise hardware specifications are described in the DCA 2.01 Installation and
Integration Guide.) Note, however, that these limits can be higher or lower, subject
to other factors such as DCA cache size, size and complexity of content, number
simultaneous requests, use of SSL, and so on.
Complexity of Pages
The relative complexity of pages being requested through the DCA can affect its
performance. Items affecting a page's complexity include:
performance. Items affecting a page's complexity include:
Number of parsable items: The DCA parses each item on a page that references a
URL (in one way or another). This can include text links, image maps, forms, frames,
and so on.
URL (in one way or another). This can include text links, image maps, forms, frames,
and so on.
Page size: Page size specifically refers to the size of the page's text content
When the number of concurrent DCA sessions is low, the effect of large or complex
pages on DCA performance is minimal. However, the effect can become more
pronounced as the number of concurrent sessions increases.
pages on DCA performance is minimal. However, the effect can become more
pronounced as the number of concurrent sessions increases.
Simultaneous Page Requests
Simultaneous page requests refers to the number of DCA users who request a
unique page (for example, by clicking a link) at precisely the same time. Note that
multiple requests for the same cached page represents only one request.
unique page (for example, by clicking a link) at precisely the same time. Note that
multiple requests for the same cached page represents only one request.