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Re: [imapsync] speed problem for large mails


From Stefan Schmidt <jsj at jsj dot dyndns dot org>
Subject Re: [imapsync] speed problem for large mails
Date Mon, 26 Jan 2009 11:26:42 +0100

Hello Gilles,

On Thursday 15 January 2009 08:27:30 Gilles LAMIRAL wrote:
> So thanks, now we can add a good FAQ entry. I'll be happy if you
> write this small documentation (plain ascii is good), I don't have
> much time. See the FAQ file for an example.

Here we go:

Q: I am transferring mails from one IMAP server to another. I am using
   an SSL connection. Transferring huge mails (>10MB) takes ages.

R: try to transfer the mails without SSL connection. SSL code outside
   imapsync uses a memory buffer, which gets increased upon reading of
   mails by 4096 bytes. This creates a huge load on the host imapsync
   runs on by copying the memory buffers for every 4096 byte step.
   This does not occur without SSL.


Greetings,

Stefan
-- 
Stefan Schmidt		jsj at jsj dot dyndns dot org