RIO benchmark results

[Ian Clatworthy]

John Arbash Meinel wrote:

> I don't know if the two of you saw my earlier post about the RIOReader.
> It has a quadratic bit with large fields that I 'fixed'. Namely it was
> doing:
> 
> value = ''
> loop:
>   value += more_text
> 
> rather than
> 
> value = []
> loop:
>   value.append(more_text)
> value = ''.join(value)

I saw the reference you made to it. Still have the patch around?
If not, Jelmer or I can make the hack. I assume it's
_patch_stanza_iter() that needs changing? I also assume we probably
ought to land that tweak whether rio is used for revisions or not?

Ian C.