https://bugzilla.wikimedia.org/show_bug.cgi?id=225

Gwern Branwen <gwe...@gmail.com> changed:

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--- Comment #20 from Gwern Branwen <gwe...@gmail.com> 2010-10-31 01:15:28 UTC 
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Thought people here might find this interested with regard to the performance
issue raised in the earliest 2004 comments (more than 6 years ago):

> In January this year (2010), Gmail switched to using HTTPS for everything by 
> default. Previously it had been introduced as an option, but now all of our 
> users use HTTPS to secure their email between their browsers and Google, all 
> the time. In order to do this we had to deploy no additional machines and no 
> special hardware. On our production frontend machines, SSL/TLS accounts for 
> less than 1% of the CPU load, less than 10KB of memory per connection and 
> less than 2% of network overhead. Many people believe that SSL takes a lot of 
> CPU time and we hope the above numbers (public for the first time) will help 
> to dispel that.

> If you stop reading now you only need to remember one thing: SSL/TLS is not 
> computationally expensive any more.

http://www.imperialviolet.org/2010/06/25/overclocking-ssl.html

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