[gentoo-user] Re: Portage performance dropped considerably

[eroen]

On Sun, 26 Jan 2014 16:35:43 +0200, Nikos Chantziaras
<realnc@×××××.com> wrote:
>Anyone else noticed this yet? Some portage update seems to have made
>"emerge -uDN @world" perform about 10 times slower than before. It
>used to take seconds, now it takes about 4 minutes only to tell me
>that there's nothing to update. And it does that every time, even
>directly in succession and with the caches warm.
>
>Is it just me?

You don't say when your baseline was, but the complexity of resolving
the package tree has increased quite a bit over the last year due to
new features like automatic rebuilds of consumers after library updates.

Another somewhat common cause of sudden slowdowns is how portage
resolves conflicts (like packageA requiring an old version of libraryB),
which is rather time-consuming. You can try adding --backtrack=0 to the
emerge command to make it stop and print an error message when
encountering a conflict rather than look for a solution. Then you can
'help' out by manually resolving any conflicts by adding package
versions to /etc/portage/package.mask . Preferably try this *after*
running an update, so your system is up-to-date against your local
version of the gentoo tree, otherwise "normal" simple-to-resolve
conflicts might cause confusion. ;-)

-- 
eroen