From: "Russ Cox" <rsc@swtch.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] About 9P ...
Date: Tue, 19 Jun 2007 20:37:55 -0400 [thread overview]
Message-ID: <20070620003757.DFA251E8C4C@holo.morphisms.net> (raw)
In-Reply-To: <46783873.4060804@free.fr>
> Because Fids are chosen by the client, the server must search in
> a table (hash table in lib9p) the associated file structure, Whereas
> if Fids are chosen by the server, a simple array is enough. I don't
> know however, if the performance improvement is really important.
> In fact I'm quite sure it is not.
If Fids were chosen by the server you would have written
the opposite. One side can have a simple array lookup
and one side can't. It doesn't matter either way.
You just pick one.
Or you could do what SSH did and pick two: there the
equivalent of a "fid" is actually a pair of integers,
one chosen by the client and one chosen by the server,
so that both can use an array lookup. Because after
all the encryption and public key operations, it's really
looking up the fids that is eating all the cpu.
Russ
next prev parent reply other threads:[~2007-06-20 0:37 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-19 20:11 Philippe Anel
2007-06-20 0:37 ` Russ Cox [this message]
2007-06-20 2:06 ` Roman Shaposhnick
2007-06-20 11:29 ` Anthony Sorace
2007-06-22 0:32 ` Derek Fawcus
2007-06-22 6:58 ` Philippe Anel
2007-06-22 15:57 ` Derek Fawcus
2007-06-22 20:32 ` Philippe Anel
2007-06-22 21:10 ` David Leimbach
2007-06-22 21:35 ` Philippe Anel
2007-06-22 21:46 ` David Leimbach
2007-06-22 21:55 ` Philippe Anel
2007-06-22 22:25 ` Philippe Anel
2007-06-22 22:57 ` David Leimbach
2007-06-22 23:01 ` Anant Narayanan
2007-06-23 4:30 ` Russ Cox
2007-06-23 5:10 ` Skip Tavakkolian
2007-06-23 9:25 ` Francisco J Ballesteros
2007-06-23 15:50 ` Martin Atkins
2007-06-23 6:24 ` Philippe Anel
2007-06-23 15:00 ` Rob Pike
2007-06-24 0:52 ` [9fans] 9P optimization Lyndon Nerenberg
2007-06-24 3:04 ` Francisco J Ballesteros
2007-06-24 3:15 ` Lyndon Nerenberg
2007-06-24 4:08 ` ron minnich
2007-06-24 9:34 ` Steve Simon
2007-06-24 10:06 ` Lyndon Nerenberg
2007-06-24 11:38 ` Steve Simon
2007-06-24 13:34 ` Lyndon Nerenberg
2007-06-25 0:34 ` ron minnich
2007-06-25 17:53 ` Lyndon Nerenberg
2007-06-25 1:02 ` Dave Eckhardt
2007-06-24 12:14 ` erik quanstrom
2007-06-24 13:36 ` Lyndon Nerenberg
2007-06-24 21:47 ` erik quanstrom
2007-06-25 17:48 ` Lyndon Nerenberg
2007-06-25 18:46 ` erik quanstrom
2007-06-24 4:16 ` Bruce Ellis
2007-06-24 18:05 ` Skip Tavakkolian
2007-06-22 23:20 ` [9fans] About 9P Skip Tavakkolian
2007-06-22 23:48 ` Francisco J Ballesteros
2007-06-23 0:27 ` Roman Shaposhnick
2007-06-23 0:27 ` Francisco J Ballesteros
2007-06-23 12:08 ` erik quanstrom
2007-06-23 12:27 ` Francisco J Ballesteros
2007-06-23 12:57 ` Lucio De Re
2007-06-23 13:01 ` Uriel
2007-06-23 13:36 ` Francisco J Ballesteros
2007-06-23 14:27 ` Lucio De Re
2007-06-23 14:45 ` Francisco J Ballesteros
2007-06-22 21:16 ` Skip Tavakkolian
2007-06-22 21:37 ` Philippe Anel
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