| |
| Performance Meter |
 |
|
The Performance Meter option helps you track the degree to which
Propel Accelerator improves the performance of your Internet dial-up connection
when accessing web pages or downloading email. If you leave the Performance
Meter open while browsing, it updates in real time. The window displays the
performance meter and associated information under two tabs: Acceleration and
Data and Time Savings.
Acceleration Tab
- Connection speed without acceleration. Propel Accelerator keeps track of the
average virtual speed-up you receive. The average speed is obtained by dividing
the effective web access speed by the average physical connection speed.
- Effective speed for accelerated content. The effective web page access speed
is based on the compression of text and graphics per page.
- Acceleration History. Propel Accelerator stores a history of acceleration factors
for thirty days and maintains the history across sessions.
- Average Daily Peak: Propel Accelerator displays an Average Daily Peak of performance
acceleration factors, computed from the peak values on each day in the thirty-day
history, including the current day and session.
Data and Time Savings Tab
- Savings for your most recent day of use: Propel Accelerator shows the savings
for Web Text, Graphics, and Email by showing the original data size in megabytes,
the compressed size in megabytes, and a savings ratio.
- Blocked in-page ads: Displays the number of in-page ads blocked by Propel Accelerator,
if the client is using this feature.
- Pop-ups: Displays the number of pop-ups blocked by Propel Accelerator, if the
client is using this feature.
- Download time savings Propel Accelerator Displays the actual download time
with acceleration, the estimated download time without acceleration, and the
estimated savings. Times are shown in hours, unless the actual accelerated
download time is less than sixty minutes, in which case, all values are shown
in minutes.
Reset Button
This button allows you to clear all underlying performance and compression
data associated with this window. This data includes all the data stored for
thirty days, plus the thirty most-recent page acceleration factors. Once cleared,
the window shows no data.
Types of Content Accelerated
Propel Accelerator accelerates the delivery of the following content types:
| Content Type(s) |
Primary Use of Content Type |
| Text |
Words that appear on standard web
pages, including browser-based email, and email that uses the POP3 protocol (Post Office Protocol 3),
Simple Mail Transfer Protocol (SMTP), or the Internet Message Access Protocol (IMAP). |
| HTML, CSS, markup, and JavaScript |
The computerized instructions that
cause pages to be displayed with a particular look and functionality,
such as tables and borders. |
| JPEG |
JPEG is a widely-used format for images that appear
in web pages and in browser-based email. Depending on the level
of graphics acceleration chosen, the quality of the JPEG on a web
page accelerated by Propel Accelerator is affected. JPEG images
sent in email are accelerated using lossless compression, meaning that they retain
their original quality. |
| GIF |
GIF images are often used for web
page graphic elements such as buttons, as well as animated images.
GIFs appear in banner ads and browser-based email as well. Propel Accelerator
speeds up GIFs without impacting quality (lossless compression). At all
acceleration rates higher than Low, Propel Accelerator reduces the colors in GIF images
to reduce the file size, without affecting visual quality. At an acceleration level
of Medium or higher, animated GIFs are disabled.
|
| Flash |
Flash images and animation are used
in banner ads for other images. |
|
