Incredible speed ups on Leopard!?

[Jordan K. Hubbard]

[ Resent from correct account, so MacPorts won't bounce it back again ]

On Jan 2, 2008, at 12:22 PM, Tabitha McNerney wrote:

> Has anyone else noticed incredible MacPorts speed up improvements  
> when installing various ports?
>
> Here's an example: The same hardware (Xserve Intel 2 x 2 GhZ Dual  
> Core Intel). Once this machine was running Tiger Server with  
> MacPorts 1.5.0 and I installed the gcc41 port which (if my notes are  
> accurate) took about 88 minutes to install from beginning to end  
> (some of the time could have been eaten up in the "fetching" of the  
> resource source files). Anyway, the same port on Leopard Server on  
> the same machine with MacPort 1.6.0 took me roughly 20 minutes to  
> install today. From 88 to 20 minutes is almost unheard of. I checked  
> the port files too, to make sure the version of the gcc41 port I was  
> installing was the same:
>
> Tiger Server:
>
> gcc41 4.1.2, Revision 2, lang/gcc41 (Variants: universal, darwin_8,  
> darwin_i386, powerpc, odcctools)
>
> Leopard Server:
>
> gcc41 4.1.2, Revision 2, lang/gcc41 (Variants: universal, darwin_8,  
> darwin_i386, powerpc, odcctools)
>
> I presume this is because Leopard and Leopard Server are now  
> leveraging the Apple Developer tools with a complete 64-bit wide  
> architecture (both the hardware and the software)?


No, I think it's because Leopard's Tcl no longer searches an insane  
search path (including network volumes) as part of its startup.  When  
we made this change in Leopard (largely because of pathological  
performance problems I noticed with MacPorts and fs_usage(1)), a full  
minute was shaved off the most basic port operations, including build/ 
install (it's more observable with something like "port search").

- Jordan

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