[MITgcm-support] files size on disk is too large

[Martin Losch]

I can only speculate, but it's possible that the "inode"-size (the smallest unit) of your file system is fairly large, so that small files take up the size of one inode. E.g. if the inode size it 4MB (as one one of the computers that I use), then a file of 3kB takes up the entire 4MB.

Martin

________________________________________
Von: Chun-Yan Zhou [c.zhou at dundee.ac.uk]
Gesendet: Freitag, 11. Januar 2013 18:14
An: mitgcm-support at mitgcm.org
Betreff: Re: [MITgcm-support] files size on disk is too large

Hi Martin,
The file size of the output, I run a case and put all the output files into one folder, and then right click the folder and choose properties. The actually size of all tge files is about 70.8 GB, I don't know why the Size on disk is so large.
Cheers!
chunyan
------------------------------

Message: 3
Date: Fri, 11 Jan 2013 14:23:34 +0100
From: Martin Losch <Martin.Losch at awi.de>
To: <mitgcm-support at mitgcm.org>
Subject: Re: [MITgcm-support] files size on disk is too large
Message-ID: <A63BD3B3-227A-4CED-8D3F-9293C0A5F878 at awi.de>
Content-Type: text/plain; charset="iso-8859-1"

Filesize of what? the executable, the output, the entire filesystem MITgcm including subdirectories? What do you do to get these numbers?

Maritn

On Jan 11, 2013, at 2:18 PM, Chun-Yan Zhou <c.zhou at dundee.ac.uk> wrote:

> I run a case of MITgcm, but the size on disk is much much larger than the actual size of files.
> Anyone has an idea to reduce the size on disk? Thanks a lot.
>
> total size of files: 70.8 GB (70,767,084,809 bytes)
> Size on disk: 570.2 GB (570,204,389,376 bytes)
>

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