Comment 3 for bug 405166
Revision history for this message
| John A Meinel (jameinel) wrote Re: [Bug 405166] Re: bzr diff in 2a to historical revision too slow | #3 |
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1b1ed1a
(Get the code!)
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Martin Pool wrote:
> It's not immediately obvious to me what's wrong in this profile, but
> maybe it will be to someone else.
>
> ** Attachment added: "diff.callgrind"
> http://
>
My immediate guess is that we don't have an optimized path from WT =>
arbitrary rev. So we have to build 2 inventories and status them, and
*then* have to extract some XXMB of raw text out and then run diff
against all of that.
If the *diff* is 8MB, that would make the raw texts probably 16+MB,
which probably takes a while to extract the right versions, and it would
be a *lot* of data to diff.
John
=:->
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