[Yum-devel] hack job for depsolving, pre-load entire requires table ... 2x - 3x better rawhide update speed

[Tim Lauridsen]

James Antill wrote:
>  So while I should have been asleep I did this, please  don't look if
> you are feeling queasy, and I'm pretty sure it still works the same.
> 
>  Basic idea behind it is that we pre-load the entire requires DB into a
> python hash+arrays, as we are losing out when we call .getRequires()
> 10,000s of times and do an SQL call a lot of those times.
> 
>  For me, this takes a "yum DEV update" from ~160s to ~60s. As I implied
> above it needs more work before we can check it in (probably kills
> performance for the upgrade one package case) and generally needs to be
> tided up. But what does everyone think, is there something else we could
> be doing instead ... does this give you some other great idea?
> 
> 
> 
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The patch looks fine to me, but what is the memory impact of the patch ?

Tim