From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: OpenSSL =?utf-8?B?4oCcRFJPV07igJ0=?= vulnerability & grafts
Date: Sat, 05 Mar 2016 00:24:59 +0100
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In-Reply-To: <20160303084548.01fa0130@debian-netbook> (Efraim Flashner's
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To: Efraim Flashner <efraim@flashner.co.il>
Cc: guix-devel <guix-devel@gnu.org>

Efraim Flashner <efraim@flashner.co.il> skribis:

> efraim@debian-netbook:~/workspace/guix$ time ./pre-inst-env guix package =
-u && time ./pre-inst-env guix package -u && time ./pre-inst-env guix packa=
ge -u
>
> real	15m0.833s
> user	5m53.268s
> sys	1m26.056s
>
> real	14m27.095s
> user	5m50.848s
> sys	1m25.156s
>
> real	14m37.017s
> user	5m55.564s
> sys	1m30.536s
>
> so I don't think the substitute info is the part that's slowing it down.
> Conky shows me both guix hand guix-daemon working, so more likely somethi=
ng
> else, like figuring out the substitutions.

Terrible.  Commit d4da602 should improve the situation.  You=E2=80=99re wel=
come
to try again and report back!

ludo@gnu.org (Ludovic Court=C3=A8s) skribis:

> A potentially disturbing thing with the new code is that it starts
> building/downloading things early, typically before it has written =E2=80=
=9CThe
> following derivations will be built=E2=80=9D; see
> <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D22139#13>.

With commit c90cb5c, the grafting code tries hard to avoid building: it
uses substitute information, when available, to determine the run-time
dependencies of packages (which in turn allows it to decide whether the
package needs to be grafted.)

Ludo=E2=80=99.