Re: [Duplicity-talk] Volsize

[Peter Schuller]

> Are there particular pros/cons with using a small or large volsize?
> With mixing small and large volsizes?
> 
> My guess is that bigger volsize reduces metadata overhead and/or it
> makes each volume zip smaller.  The downside is that you use more
> tempspace?

(*) You do use more tempspace.  

(*) Re-tries happen at the full volume level, so if uploads/downloads
are unreliable, large volume sizes may be difficult (if a single
transfer never is able to finish).

(*) On the other hand, larger volume sizes may be faster to
upload/download, allowing TCP to reach full speed. For example with S3
I have observed a relatively slow ramp-up, so a larger volume size
means a higher average speed.

(*) Ditto when the per-file overhead is large, such as with sftp.

-- 
/ Peter Schuller

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