From: Led <led@ukr-fin.com.ua>
To: ALT Linux Sisyphus discussion list <sisyphus@altlinux.ru>
Subject: Re: [sisyphus] Re: ppmd
Date: Wed, 21 Sep 2005 12:49:41 +0300
Message-ID: <200509211249.42077.led@ukr-fin.com.ua> (raw)
In-Reply-To: <m3y85qaig8.fsf@mrkooll.tdr.pibhe.com>
В сообщении от Среда 21 Сентябрь 2005 12:17 Maxim Tyurin написал(a):
> Alexey Tourbin writes:
> > On Tue, Sep 20, 2005 at 12:07:15PM +0300, Maxim Tyurin wrote:
> >> > Эта штука *зверски* жмёт текстовые файлы.
> >> >
> >> > $ du -hs dump.old
> >> > 350M dump.old
> >> > $ gzip -9 <dump.old >dump.gz
> >> > $ du -hs dump.gz
> >> > 31M dump.gz
> >> > $ bzip2 <dump.old >dump.bz2
> >> > $ du -hs dump.bz2
> >> > 21M dump.bz2
> >> > $ ppmd e -s -o16 -m256 dump.old
> >> > $ du -hs dump.pmd
> >> > 14M dump.pmd
> >> > $
> >>
> >> А если
> >> $ rzip -9 -o dump.rz dump.old
> >> $ du - hs dump.rz
> >> ?
> >
> > 25M dump.rz
>
> Спасибо. Только как-то странно что bzip2 обошел rzip.
> Не должно так быть ИМХО.
> Может просто файлик маловат?
> mrkooll@mrkooll ~/DVD > du -hs ALTLinux-Community
> 629M ALTLinux-Community
> mrkooll@mrkooll ~/DVD > bzip2 -v9 < ALTLinux-Community >
> ALTLinux-Community.bz2 (stdin): 7.767:1, 1.030 bits/byte, 87.12% saved,
> 659492155 in, 84913589 out. mrkooll@mrkooll ~/DVD > du -hs
> ALTLinux-Community.bz2
> 81M ALTLinux-Community.bz2
> mrkooll@mrkooll ~/DVD > rzip -9 -o ALTLinux-Community.rz
> ALTLinux-Community ALTLinux-Community - compression ratio 8.662
> mrkooll@mrkooll ~/DVD > du -hs ALTLinux-Community.rz
> 73M ALTLinux-Community.rz
7za (p7zip) с указанием алгоритма PPMd жмёт лучше, чем ppmd (возможно потому,
что в 7zip можно указать максимальный "model order" 32, а не 16)
Led.
Led.
next prev parent reply other threads:[~2005-09-21 9:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-19 20:07 [sisyphus] I: Sisyphus-20050920 packages: +18! +65 (4802) Alexey M. Tourbin
2005-09-19 21:03 ` [sisyphus] dosfstools-2.11-alt4 Dmitry V. Levin
2005-09-19 21:42 ` [sisyphus] ppmd Alexey Tourbin
2005-09-20 4:55 ` Andrey Rahmatullin
2005-09-20 9:44 ` [sisyphus] ppmd Alexey Tourbin
2005-09-20 9:07 ` [sisyphus] ppmd Maxim Tyurin
2005-09-20 9:57 ` [sisyphus] ppmd Alexey Tourbin
2005-09-21 9:17 ` Maxim Tyurin
2005-09-21 9:49 ` Led [this message]
2005-09-20 3:08 ` [sisyphus] I: Sisyphus-20050920 packages: +18! +65 (4802) php-coder
2005-09-20 9:19 ` [sisyphus] [JT] idea %fix Michael Shigorin
2005-09-20 22:19 ` [sisyphus] [JT] idea %fix [JT] Vitaly Lipatov
2005-09-20 22:31 ` [sisyphus] " Alexey Tourbin
2005-09-22 12:46 ` [sisyphus] I: Sisyphus-20050920 packages: +18! +65 (4802) henker
2005-09-22 12:57 ` Led
2005-09-22 14:43 ` [JT] " Alexander Kubatkin
2005-09-23 7:35 ` [sisyphus] [JT] " Michael Shigorin
2005-09-23 7:44 ` Serge Polkovnikov
2005-09-23 9:12 ` Led
2005-09-22 13:01 ` [sisyphus] " Andrey Rahmatullin
2005-09-22 14:30 ` henker
2005-09-23 7:35 ` [sisyphus] [JT] " Michael Shigorin
2005-09-20 9:16 ` [sisyphus] fatresize Michael Shigorin
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