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Re: [PATCH] sort: use posix_fadvise to announce access patterns on files
From: |
Erik Auerswald |
Subject: |
Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading |
Date: |
Tue, 2 Mar 2010 12:42:44 +0100 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Hi,
On Mon, Mar 01, 2010 at 05:33:38PM -0800, Joey Degges wrote:
> Were you sure to remount your devices to clear the cache before running
> these tests? While testing this patch early on the cache caused me many
> incorrect readings. Another approach I took to clear the cache was to fill
> up all of my RAM with some other process.
To clear the caches you can use
echo 3 > /proc/sys/vm/drop_caches
(linux kernel since version 2.6.16).
Erik
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, (continued)
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Pádraig Brady, 2010/03/01
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Joey Degges, 2010/03/01
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Joey Degges, 2010/03/02
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Pádraig Brady, 2010/03/02
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Joey Degges, 2010/03/02
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Pádraig Brady, 2010/03/02
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Pádraig Brady, 2010/03/03
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Jim Meyering, 2010/03/03
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Pádraig Brady, 2010/03/03
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Jim Meyering, 2010/03/02
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading,
Erik Auerswald <=
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Pádraig Brady, 2010/03/02
- Re: [PATCH] sort: use posix_fadvise to announce access patterns on files opened for reading, Joey Degges, 2010/03/02