From: Hubert Kario <hka@qbs.com.pl>
To: Magicloud Magiclouds <magicloud.magiclouds@gmail.com>
Cc: "linux-btrfs" <linux-btrfs@vger.kernel.org>
Subject: Re: How to fasten btrfs?
Date: Tue, 25 Jan 2011 15:56:51 +0100 [thread overview]
Message-ID: <201101251556.51806.hka@qbs.com.pl> (raw)
In-Reply-To: <AANLkTik_mfFO+ciZbxuuqqRJDkOGoOW=pfjVv0au80TS@mail.gmail.com>
On Tuesday, January 25, 2011 15:28:11 Magicloud Magiclouds wrote:
> So you were saying that, even an unlink operation, the system walks
> through all file data blocks? I thought unlink wouldn't have to write
> too much data.
No, but the amount of data to be changed if the number of extents is sm=
all=20
will be lower.
>=20
> On Tue, Jan 25, 2011 at 6:30 PM, Hubert Kario <hka@qbs.com.pl> wrote:
> > On Tuesday 25 of January 2011 07:45:02 Magicloud Magiclouds wrote:
> >> Hi,
> >> I am using 2.6.36.3 kernel with btrfs, 512MB memory and a very s=
low
> >> disk, no special options for mounting btrfs except noatime. Now I
> >> found it very slow. When I rm a 5GB movie, it took 20 secs.
> >=20
> > try mounting with nodatacow and defragment the directory the file r=
esides
> > in
> >=20
> > Regards
> > --
> > Hubert Kario
> > QBS - Quality Business Software
> > 02-656 Warszawa, ul. Ksawer=C3=B3w 30/85
> > tel. +48 (22) 646-61-51, 646-74-24
> > www.qbs.com.pl
--=20
Hubert Kario
QBS - Quality Business Software
02-656 Warszawa, ul. Ksawer=C3=B3w 30/85
tel. +48 (22) 646-61-51, 646-74-24
www.qbs.com.pl
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prev parent reply other threads:[~2011-01-25 14:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-25 6:45 How to fasten btrfs? Magicloud Magiclouds
2011-01-25 10:30 ` Hubert Kario
2011-01-25 14:28 ` Magicloud Magiclouds
2011-01-25 14:56 ` Hubert Kario [this message]
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