On Fri, 04 Dec 2020 13:45:02 +0200 Eli Zaretskii <eliz@gnu.org> wrote:

>> From: Stephen Berman <stephen.berman@gmx.net>
>> Date: Fri, 04 Dec 2020 10:32:16 +0100
>> Cc: emacs-devel@gnu.org
>>
>> As noted above, I build both master and emacs-27 with CFLAGS='-Og -g3'.
>> Given that, is such a difference still expected?
>
> No.  But if you see this consistently, please produce and post the
> profile of each of the versions, and let's take it from there.

Since the builds I ran the benchmark on were about two weeks old, I
updated both branches now, rebuilt and ran the benchmark again, and got
the same results: ~21 seconds on master, ~61 seconds on emacs-27.
Profiles attached.

Steve Berman