From: "David Tweed" <david.tweed@gmail.com>
To: "Martin Langhoff" <martin.langhoff@gmail.com>
Cc: "Shawn O. Pearce" <spearce@spearce.org>,
"Jakub Narebski" <jnareb@gmail.com>,
"Nicolas Pitre" <nico@cam.org>, "Geert Bosch" <bosch@adacore.com>,
"Andi Kleen" <andi@firstfloor.org>,
"Ken Pratt" <ken@kenpratt.net>,
git@vger.kernel.org
Subject: Re: pack operation is thrashing my server
Date: Thu, 14 Aug 2008 10:04:55 +0100 [thread overview]
Message-ID: <e1dab3980808140204t29b56fa4h3b22e52fc576fb1e@mail.gmail.com> (raw)
In-Reply-To: <46a038f90808131654r228a1b57y964f7cdb9c77be5f@mail.gmail.com>
On Thu, Aug 14, 2008 at 12:54 AM, Martin Langhoff
<martin.langhoff@gmail.com> wrote:
> On Thu, Aug 14, 2008 at 3:26 AM, David Tweed <david.tweed@gmail.com> wrote:
>> FWIW, PDF format is a mix of sections of uncompressed higher level
>> ASCII notation and sections of compressed actual glyph/location data
>
> The PDF spec allows compression of the "text" sections - if a PDF is
> uncompressed, it's a good candidate for delta & compression.
> Unfortunately, within the same file you might have an embedded JPEG.
Sure, all I was pointing out was that even pdfs with compressed page
contents can look like uncompressed text from looking at the entropy
of the first 4k or 8k.
--
cheers, dave tweed__________________________
david.tweed@gmail.com
Rm 124, School of Systems Engineering, University of Reading.
"while having code so boring anyone can maintain it, use Python." --
attempted insult seen on slashdot
next prev parent reply other threads:[~2008-08-14 9:06 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-10 19:47 pack operation is thrashing my server Ken Pratt
2008-08-10 23:06 ` Martin Langhoff
2008-08-10 23:12 ` Ken Pratt
2008-08-10 23:30 ` Martin Langhoff
2008-08-10 23:34 ` Ken Pratt
2008-08-11 3:04 ` Shawn O. Pearce
2008-08-11 7:43 ` Ken Pratt
2008-08-11 15:01 ` Shawn O. Pearce
2008-08-11 15:40 ` Avery Pennarun
2008-08-11 15:59 ` Shawn O. Pearce
2008-08-11 19:13 ` Ken Pratt
2008-08-11 19:10 ` Andi Kleen
2008-08-11 19:15 ` Ken Pratt
2008-08-13 2:38 ` Nicolas Pitre
2008-08-13 2:50 ` Andi Kleen
2008-08-13 2:57 ` Shawn O. Pearce
2008-08-11 19:22 ` Shawn O. Pearce
2008-08-11 19:29 ` Ken Pratt
2008-08-11 19:34 ` Shawn O. Pearce
2008-08-11 20:10 ` Andi Kleen
2008-08-13 3:12 ` Geert Bosch
2008-08-13 3:15 ` Shawn O. Pearce
2008-08-13 3:58 ` Geert Bosch
2008-08-13 14:37 ` Nicolas Pitre
2008-08-13 14:56 ` Jakub Narebski
2008-08-13 15:04 ` Shawn O. Pearce
2008-08-13 15:26 ` David Tweed
2008-08-13 23:54 ` Martin Langhoff
2008-08-14 9:04 ` David Tweed [this message]
2008-08-13 16:10 ` Johan Herland
2008-08-13 17:38 ` Ken Pratt
2008-08-13 17:57 ` Nicolas Pitre
2008-08-13 14:35 ` Nicolas Pitre
2008-08-13 14:59 ` Shawn O. Pearce
2008-08-13 15:43 ` Nicolas Pitre
2008-08-13 15:50 ` Shawn O. Pearce
2008-08-13 17:04 ` Nicolas Pitre
2008-08-13 17:19 ` Shawn O. Pearce
2008-08-14 6:33 ` Andreas Ericsson
2008-08-14 10:04 ` Thomas Rast
2008-08-14 10:15 ` Andreas Ericsson
2008-08-14 22:33 ` Shawn O. Pearce
2008-08-15 1:46 ` Nicolas Pitre
2008-08-14 14:01 ` Nicolas Pitre
2008-08-14 17:21 ` Linus Torvalds
2008-08-14 17:58 ` Linus Torvalds
2008-08-14 19:04 ` Nicolas Pitre
2008-08-14 19:44 ` Linus Torvalds
2008-08-14 21:30 ` Andi Kleen
2008-08-15 16:15 ` Linus Torvalds
2008-08-14 21:50 ` Nicolas Pitre
2008-08-14 23:14 ` Linus Torvalds
2008-08-14 23:39 ` Björn Steinbrink
2008-08-15 0:06 ` Linus Torvalds
2008-08-15 0:25 ` Linus Torvalds
2008-08-16 12:47 ` Björn Steinbrink
2008-08-16 0:34 ` Linus Torvalds
2008-09-07 1:03 ` Junio C Hamano
2008-09-07 1:46 ` Linus Torvalds
2008-09-07 2:33 ` Junio C Hamano
2008-09-07 17:11 ` Nicolas Pitre
2008-09-07 17:41 ` Junio C Hamano
2008-09-07 2:50 ` Jon Smirl
2008-09-07 3:07 ` Linus Torvalds
2008-09-07 3:43 ` Jon Smirl
2008-09-07 4:50 ` Linus Torvalds
2008-09-07 13:58 ` Jon Smirl
2008-09-07 17:08 ` Nicolas Pitre
2008-09-07 20:33 ` Jon Smirl
2008-09-08 14:17 ` Nicolas Pitre
2008-09-08 15:12 ` Jon Smirl
2008-09-08 16:01 ` Jon Smirl
2008-09-07 8:18 ` Andreas Ericsson
2008-09-07 7:45 ` Mike Hommey
2008-08-14 18:38 ` Nicolas Pitre
2008-08-14 18:55 ` Linus Torvalds
2008-08-13 16:01 ` Geert Bosch
2008-08-13 17:13 ` Dana How
2008-08-13 17:26 ` Nicolas Pitre
2008-08-13 12:43 ` Jakub Narebski
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