From: "Joakim Tjernlund" <Joakim.Tjernlund@lumentis.se>
To: "Jörn Engel" <joern@wohnheim.fh-wedel.de>,
"David Woodhouse" <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Subject: Re: [PATCH RFC] 1/2 central workspace for zlib
Date: Sat, 31 May 2003 17:44:06 +0200 [thread overview]
Message-ID: <002101c3278b$7b5d37f0$020120b0@jockeXP> (raw)
In-Reply-To: 20030530144959.GA4736@wohnheim.fh-wedel.de
> Hi!
>
> The following creates a central workspace per cpu for the zlib. The
> original idea was to save memory for embedded, but this should also
> improve performance for smp.
>
> Currently, each user of the zlib has to provide a workspace for the
> zlib to draw memory from. Each workspace amounts to 400k for deflate
> or 50k for inflate. Four users exist, as of 2.4.20:
> jffs2: inflate & deflate, initialized once, 450k
[SNIP]
450KB looks like a lot considering JFFS2 will never compress more than a PAGE at a time.
I think the actual workspace needed is much less, but none has figured out how to calculate
the real workspace needed for a fixed buffer size, right?
Jocke
next prev parent reply other threads:[~2003-05-31 15:43 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-30 14:49 [PATCH RFC] 1/2 central workspace for zlib Jörn Engel
2003-05-30 15:29 ` James Morris
2003-05-30 17:43 ` Jörn Engel
2003-05-31 0:14 ` David S. Miller
2003-05-31 6:48 ` Jörn Engel
2003-05-31 6:55 ` David S. Miller
2003-05-31 7:56 ` Jörn Engel
2003-05-31 7:59 ` David S. Miller
2003-05-31 8:11 ` Jörn Engel
2003-05-31 8:12 ` David S. Miller
2003-05-31 8:22 ` Con Kolivas
2003-06-01 1:25 ` Matt Mackall
2003-06-02 12:19 ` Jörn Engel
2003-05-31 9:09 ` Arjan van de Ven
2003-05-31 6:20 ` David S. Miller
2003-05-31 10:51 ` James Morris
2003-05-31 11:07 ` Jörn Engel
2003-05-31 15:44 ` Joakim Tjernlund [this message]
2003-06-02 12:26 ` Jörn Engel
2003-06-02 13:03 ` Joakim Tjernlund
2003-06-02 13:32 ` Jörn Engel
2003-06-02 15:15 ` matsunaga
2003-06-02 15:36 ` Jörn Engel
2003-06-02 15:40 ` David Woodhouse
2003-06-02 15:53 ` Jörn Engel
2003-06-02 15:59 ` David Woodhouse
2003-06-02 16:37 ` Jörn Engel
2003-06-02 19:36 ` David Woodhouse
2003-06-02 20:54 ` Jörn Engel
2003-06-02 16:07 ` matsunaga
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