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Re: builds are getting slower?
From: |
Eli Zaretskii |
Subject: |
Re: builds are getting slower? |
Date: |
Thu, 10 Dec 2015 18:16:50 +0200 |
> From: Glenn Morris <address@hidden>
> Date: Wed, 09 Dec 2015 21:15:38 -0500
>
> Subjectively it felt to me lately like it was taking longer to build
> Emacs than it used to. When I looked at my daily build logs, that seems
> to be confirmed - see attached figure (time for a full bootstrap).
> In particular, things seem to have gotten about 30% slower around 10th
> November. Maybe (?) this is borne out by
> http://hydra.nixos.org/job/gnu/emacs-trunk/tarball#tabs-charts
> or maybe it isn't.
Strange: the plot at Hydra doesn't seem to show any perceptible
tendency towards longer times. If I draw an imaginary line to show
the long-term average, it stays at about the same value. Or maybe I
misunderstand the graphs there.
I have a few questions:
. Are these are builds from master or from emacs-25?
. Is this reproducible? i.e., if you checkout what was HEAD on
Nov 5, do you get bootstrap time around the values recorded
for that date?
. Did anything change in Hydra system configuration since the
beginning of the year? I mean stuff like OS upgrades, changes in
hardware (including disk drives), new versions of GCC and Binutils
installed.
. (Paul already asked this.) What are the configure-time and
make-time options? are they identical in all these builds?
I tried byte compiling large files, and I don't see more than 10%
slowdown between some build near October end and a build a few days
ago. I measured the same 10% in optimized and non-optimized builds
(of course, absolute times are different). So this cannot explain a
30% increase in bootstrap time, at least not on my system. Can you
try the same experiment on Hydra?
Re: builds are getting slower?,
Eli Zaretskii <=
- Re: builds are getting slower?, Glenn Morris, 2015/12/10
- Re: builds are getting slower?, Paul Eggert, 2015/12/13
- Re: builds are getting slower?, Glenn Morris, 2015/12/13
- Re: builds are getting slower?, Glenn Morris, 2015/12/13
- Re: builds are getting slower?, Eli Zaretskii, 2015/12/13
- Re: builds are getting slower?, John Wiegley, 2015/12/14
- Re: builds are getting slower?, Paul Eggert, 2015/12/14
- Re: builds are getting slower?, John Wiegley, 2015/12/14
- Re: builds are getting slower?, Michael Albinus, 2015/12/15
- Re: builds are getting slower?, Phillip Lord, 2015/12/15