[263] in arla-drinkers
Re: Chunk size?
daemon@ATHENA.MIT.EDU (Artur Grabowski)
Wed Sep 16 05:43:46 1998
From owner-arla-drinkers@stacken.kth.se Wed Sep 16 09:43:45 1998
Return-Path: <owner-arla-drinkers@stacken.kth.se>
Delivered-To: arla-drinkers-mtg@bloom-picayune.mit.edu
Received: (qmail 11859 invoked from network); 16 Sep 1998 09:43:44 -0000
Received: from unknown (HELO sundance.stacken.kth.se) (130.237.234.41)
by bloom-picayune.mit.edu with SMTP; 16 Sep 1998 09:43:44 -0000
Received: (from majordom@localhost)
by sundance.stacken.kth.se (8.8.8/8.8.8) id LAA25332
for arla-drinkers-list; Wed, 16 Sep 1998 11:38:43 +0200 (MET DST)
Received: (from art@localhost)
by sundance.stacken.kth.se (8.8.8/8.8.8) id LAA25324;
Wed, 16 Sep 1998 11:38:38 +0200 (MET DST)
To: Dr A V Le Blanc <LeBlanc@mcc.ac.uk>
Cc: arla-drinkers@stacken.kth.se
Subject: Re: Chunk size?
References: <19980916071304.C13657@afs.mcc.ac.uk>
From: Artur Grabowski <art@stacken.kth.se>
Date: 16 Sep 1998 11:38:37 +0200
In-Reply-To: Dr A V Le Blanc's message of Wed, 16 Sep 1998 07:13:04 +0100
Message-ID: <lubogsge6si.fsf@sundance.stacken.kth.se>
Lines: 23
X-Mailer: Gnus v5.3/Emacs 19.34
Sender: owner-arla-drinkers@stacken.kth.se
Precedence: bulk
Dr A V Le Blanc <LeBlanc@mcc.ac.uk> writes:
>
> I gather from what documentation there is, that arla does not have
> a chunk size as AFS does, but that entire files are transferred
> and cached. Is this true, or are large files broken up into
> chunks? If so (or if not) is there a limit to the amount that
> can be transferred at once? Can this be configured?
The limit is the size of your cache.
> Secondly, there is with Transarc AFS the possibility of having
> the cache entirely memory resident (if you have enough memory,
> and if that's what you want). But arla does not seem to be
> able to do this. Would this be a difficult alteration?
Yes. To do that we would need to implement our own read and write operations
in xfs and when we do that we can also implement caching of partial files.
Right now there are no plans to do that.
On many systems you can have you cache in a memory based filesystem (mfs).
//art
