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From Rici Lake <>
Subject Re: SSL downloads faster than non SSL?
Date Tue, 02 Aug 2005 21:04:30 GMT
Try setting

EnableSendfile off

in your apache config file and rerunning the tests. There have been 
other reports of surprisingly slow transfer speeds with sendfile 
enabled on Windows. This won't affect SSL, of course, since the SSL 
transfer cannot use sendfile.

On 2-Aug-05, at 3:51 PM, Phillip Susi wrote:

> I decided to do some informal benchmark comparisons between using
> windows SMBFS and apache/webdav for file transfers.  I ended up finding
> that apache is actually faster at sending files over an SSL connection
> than a plain connection.  I downloaded a ~600 meg test file from the
> server using windows explorer webfolders, IE, and firefox.  Firefox
> downloads the file in the 4000-5000 KB/s range when using an SSL
> connection.  IE gets over 10,000 KB/s downloading over the secure
> connection.  Both only are able to download at 300-600 KB/s using the
> non SSL connection though.  This is, of course, all done over a 100 
> Mbps
> ethernet network that is minimally loaded, and I repeated the test a 
> few
> times, clearing the browsers caches each time.
> Needless to say, this is very strange.  My client machine is running
> windows 2000 pro, and the server is running windows 2003 server, with
> apache 2.0.52 installed.  Does anyone have any ideas to possibly 
> explain
> and correct these results?

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