From: "Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>
To: The development of GNU GRUB <grub-devel@gnu.org>
Subject: Re: Image scaling performance
Date: Thu, 26 Feb 2015 17:44:11 +0100 [thread overview]
Message-ID: <54EF4D5B.6030305@gmail.com> (raw)
In-Reply-To: <CAN9vWDJxY5qgvBrtHXkT5jdYNGO9nsjp7Ud2axku=1yndWUOpA@mail.gmail.com>
On 25.02.2015 19:46, Michael Zimmermann wrote:
> I'm still questioning the efficiency
> math operations because on slow devices there are other bottlenecks of
> the same kind(like de/compression).
That's pure speculation at that point. GRUB has 3 compression algorithms:
- minilzo. Has some divisions in parts which GRUB doesn't use. Those
parts are easily disablable and I'll just do so.
- gzip. Uses division only in zlib header check. I'll optimise it a
little but it's only one division in header check, not in compressed
data body.
- xz. No divisions
next prev parent reply other threads:[~2015-02-26 16:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-24 9:39 Image scaling performance Michael Zimmermann
2015-02-24 9:51 ` Vladimir 'phcoder' Serbinenko
2015-02-24 10:00 ` Michael Zimmermann
2015-02-24 11:27 ` Vladimir 'phcoder' Serbinenko
2015-02-24 11:47 ` Michael Zimmermann
2015-02-24 12:39 ` Vladimir 'phcoder' Serbinenko
2015-02-24 18:01 ` Michael Zimmermann
2015-02-24 18:22 ` Andrei Borzenkov
2015-02-25 16:20 ` Leif Lindholm
2015-02-25 15:45 ` Leif Lindholm
2015-02-25 16:23 ` Leif Lindholm
2015-02-25 18:38 ` Michael Zimmermann
2015-02-25 18:41 ` Vladimir 'phcoder' Serbinenko
2015-02-25 18:46 ` Michael Zimmermann
2015-02-25 18:56 ` Vladimir 'φ-coder/phcoder' Serbinenko
2015-02-25 19:28 ` Michael Zimmermann
2015-02-25 20:39 ` Vladimir 'φ-coder/phcoder' Serbinenko
2015-02-25 20:48 ` Vladimir 'φ-coder/phcoder' Serbinenko
2015-02-25 20:54 ` Michael Zimmermann
2015-02-26 16:44 ` Vladimir 'φ-coder/phcoder' Serbinenko [this message]
2015-02-26 17:10 ` Michael Zimmermann
2015-02-26 17:16 ` Vladimir 'φ-coder/phcoder' Serbinenko
2015-02-26 20:27 ` Michael Zimmermann
2015-02-26 20:35 ` Vladimir 'φ-coder/phcoder' Serbinenko
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