Am Tue, 14 Apr 2009 20:28:01 +0100
schrieb Mike Dent <[email protected]>:

> 
> Just wondering if anybody else notices what seem like slow email
> uploads from gmail app in Android?
> For example if I have a photo for upload which averages about 500kb it
> seems to take several minutes to clear
> from the sent folder over 3g?

base64 encoding => 500 * 8 / 6 == 666KB

Now, with basic UMTS you've got at most 8KB/s upload, so at ideal
conditions it takes around 1.5 minutes to send such a photo by email.

With basic GPRS, you've got at best 1KB/s upload, which means 11
minutes for the sending.

The reality is, that you often do not have perfect network conditions,
so even with a "3G" connection, your performance will be something
between the 83 seconds and the 11 minutes => here we go, you describe
it as taking several minutes:

 2 minutes =>   5.5KB/s upload
 3 minutes =>   3.7KB/s upload
 4 minutes =>   2.8KB/s upload
 5 minutes =>   2.2KB/s upload
 6 minutes =>   1.9KB/s upload
 7 minutes =>   1.6KB/s upload
 8 minutes =>   1.4KB/s upload
 9 minutes =>   1.2KB/s upload
10 minutes =>   1.1KB/s upload
11 minutes =>   1.0KB/s upload

Andreas
> 
> 

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