From: Andrew Burgess <aab@cichlid.com>
To: linux-kernel@vger.kernel.org
Subject: Re: a 15 GB file on tmpfs
Date: Thu, 21 Jul 2005 08:25:19 -0700 [thread overview]
Message-ID: <200507211525.j6LFPJIA009192@cichlid.com> (raw)
On Wed, Jul 20, 2005 at 02:16:36PM +0200, Bastiaan Naber wrote:
> I have a 15 GB file which I want to place in memory via tmpfs. I want to do
> this because I need to have this data accessible with a very low seek time.
You don't want tmpfs. You want either (1) ramfs and copy the data once at
boot time or (2) any filesystem and mmap and lock which will read the data
every time your app starts.
Tmpfs is backed by swap so other system activity will potentially cause some of
the file to go to swap which kills your latency spec.
HTH
next reply other threads:[~2005-07-21 15:27 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-21 15:25 Andrew Burgess [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-07-22 10:38 linux
2005-07-22 9:39 Cabaniols, Sebastien
2005-07-20 12:16 Bastiaan Naber
2005-07-20 13:20 ` Erik Mouw
2005-07-20 13:31 ` Antonio Vargas
2005-07-20 13:35 ` Miquel van Smoorenburg
2005-07-20 14:44 ` Erik Mouw
2005-07-20 15:23 ` Antonio Vargas
2005-07-21 2:13 ` Jim Nance
2005-07-20 15:18 ` Jan Engelhardt
2005-07-21 6:25 ` Denis Vlasenko
2005-07-21 8:42 ` Bernd Petrovitsch
2005-07-21 9:12 ` Stefan Smietanowski
2005-07-21 9:39 ` Bernd Petrovitsch
2005-07-22 10:36 ` Bernd Eckenfels
2005-07-22 11:00 ` Stefan Smietanowski
2005-07-22 16:25 ` Bernd Eckenfels
2005-07-22 21:10 ` Stefan Smietanowski
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