On Sun, Mar 10, 2019 at 1:29 PM Alex Koval <alex@koval.kharkov.ua> wrote:

> I've been using emacs-27.0.50 built from git for quite a some time, no
> issues were found until recently.
>
> Yesterday I've installed the latest version from source and got a few
> issues with it.
>
> 1) Memory issues. In almost no time it ate >6Gb of RSS and around 8GB or
>    Virtual RAM. My OS: linux/arch, all default compilation options (no
>    change to conigure flags).
>
>    Just to compare it, I've worked with same code in same project but with
>    emacs-26.1.92 for another 6 hours and it only consumed 1.2Gb so far.
>

FWIW, I checked my Emacs instance – uptime 3 days, 21 hours – and I have
112.8MB private memory, 196.6 total (including OS toolkit memory returnable
to the OS) on macOS.  So, while I'm uncertain what our comparative load is,
I'm definitely not seeing similar numbers on a build from last Thursday.
This is on macOS, but past experience says that platform is more likely,
not less, to show excessive memory use.

I'm assuming that this is almost all private memory (that is, a leak, as
Eli says) but
https://raw.githubusercontent.com/pixelb/ps_mem/master/ps_mem.py will print
a useful summary and confirm that.