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better analysis of why the depends keep growing

master
Joey Hess 2009-08-24 22:10:12 -04:00
parent 96936899da
commit 134a25d163
1 changed files with 7 additions and 5 deletions
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doc/todo/should_optimise_pagespecs.mdwn
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@ -244,11 +244,13 @@ more complicated every time!
> other things that overloaded the system.
> b) Suggests to me we will probably want to force a rebuild on upgrade
> when fixing this (via the mechanism in the postinst).
>
> BTW, the underlying bug here is really horribly simple:
> When refreshing, `loadindex` preserves the previous depends list,
> and `add_depends` adds stuff to it. So it doubles every time a page is
> re-rendered during refresh. --[[Joey]]
>
> I've investigated why the pagespecs keep growing: When page A changes,
> its old depends are cleared. Then
> page B that inlines A gets rebuilt, and its old depends are also cleared.
> But page B also inlines page C; which means C gets re-rendered. And this
> happens w/o its old depends being cleared, so C's depends are doubled.
> --[[Joey]]
After the initial optimization: 14.27s to rebuild, 8.26/8.33/8.26 to refresh.
Success!