Re: [2.64] Test "Hard fail" fails on Darwin

[Ralf Wildenhues]

* Ludovic Courtès wrote on Wed, Jul 29, 2009 at 09:45:38PM CEST:
> Ralf Wildenhues writes:
> > * Ludovic Courtès wrote on Wed, Jul 29, 2009 at 10:15:44AM CEST:
> 
> >> PATH: 
> >> /private/tmp/nix-build-dnnfpb1bi3bwf696k09s44l2p9s0ppgw-autoconf-2.64.drv-0/autoconf-2.64/tests
> >> PATH: /nix/store/xra8dla43v4y3icyz81p9jdcmphnwjny-gnum4-1.4.13/bin

> > Do the long directory names slow down the system much in practice?
> 
> Not in an observable way, AFAICT.  I don't think anyone tried to measure
> this, though.
> 
> Note that in "normal use" $PATH et al. aren't longer than with a
> conventional file system layout: users typically have only
> `$HOME/.nix-profile/bin' (which contains symlinks to files under
> /nix/store) and a couple of other entries in $PATH.

Yes, but the kernel will have to keep resolving the long symlinked names
all the time.  I'd expect this to at least be measureable for some
system loads.  But we're getting off-topic ...

Cheers,
Ralf