From: "Clément Pit-Claudel" <cpitclaudel@gmail.com>
To: Stefan Monnier <monnier@IRO.UMontreal.CA>, emacs-devel@gnu.org
Cc: Vibhav Pant <vibhavp@gmail.com>
Subject: Re: [Emacs-diffs] feature/byte-switch c4316a2: ; bytecomp.el (byte-compile-cond-jump-table): Add TODO note
Date: Mon, 6 Feb 2017 11:26:12 -0500 [thread overview]
Message-ID: <834ceb45-d61c-eb63-de17-a06021eb3f07@gmail.com> (raw)
In-Reply-To: <jwvlgtj2w8y.fsf-monnier+emacsdiffs@gnu.org>
On 2017-02-06 10:35, Stefan Monnier wrote:
> Indeed, we can probably substantially improve our hash-table performance
> for small hash tables (not only in terms of CPU use but also in terms of
> memory use).
>
> But rather than a :linear-search keyword to make-hash-table, can't we
> just test the value of `count` and use a linear search if it's small?
This would be great. I currently have quite a bit of hash-table-heavy code with many relatively small hash tables, but in a few rare cases they can grow large, so alists don't cut it. A linear-search keyword wouldn't really help, because I can't tell beforehand which ones will be large.
Clément.
next prev parent reply other threads:[~2017-02-06 16:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170206140314.23384.66886@vcs.savannah.gnu.org>
[not found] ` <20170206140315.229CD220145@vcs.savannah.gnu.org>
2017-02-06 15:35 ` [Emacs-diffs] feature/byte-switch c4316a2: ; bytecomp.el (byte-compile-cond-jump-table): Add TODO note Stefan Monnier
2017-02-06 16:26 ` Clément Pit-Claudel [this message]
2017-02-06 16:57 ` Vibhav Pant
2017-02-06 17:27 ` Stefan Monnier
2017-02-06 17:40 ` Stefan Monnier
2017-02-06 18:22 ` Vibhav Pant
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