[Eventmachine-talk] Image sending performance

[Brian Takita]

Hello, we are sending image files using EventMachine and for some
reason the image files take significantly longer to send than their
text counterparts.
We are using send_data(File.read). Does anybody else have this issue?

Does ruby handle binary data inefficiently?

Thanks,
Brian
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[Tony Arcieri]

On Wed, Aug 27, 2008 at 7:05 PM, Brian Takita <brian....@gmail.com> wrote:

Hello, we are sending image files using EventMachine and for some
reason the image files take significantly longer to send than their
text counterparts.
We are using send_data(File.read).

Well, the problem you're going to run into is that you're first reading the entire file into memory in a single buffer, then EventMachine is building its own buffer of data to write to the connection.

I believe there's some fast file streaming stuff for EventMachine available

--
Tony Arcieri
medioh.com

[Aman Gupta]

Try send_file_data instead: http://github.com/eventmachine/eventmachine/tree/master/lib/eventmachine.rb#L1550-1557

  Aman

[Kirk Haines]

Brian, if you are smaller files, use send_file_data.  Smaller is somewhat variable, but probably sits between 16k and 32k.

If you are sending larger files, use stream_file_data.

You should be able to get high transfer rates with these methods.


Kirk Haines