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From: Freddie Cash <fjwcash@gmail.com>
To: linux-btrfs@vger.kernel.org
Subject: Re: Confused by performance
Date: Wed, 16 Jun 2010 12:35:48 -0700	[thread overview]
Message-ID: <AANLkTimKGCk7KlD4KQ8oXhnnOf0pj3VzzDmzzBIK0bNn@mail.gmail.com> (raw)
In-Reply-To: <AANLkTinM6ab_KEynfgvVT9v5TmcogoLZ0PLAz2oPnsiS@mail.gmail.com>

<snip a lot of fancy math that missed the point>

That's all well and good, but you missed the part where he said ext2
on a 5-way LVM stripeset is many times faster than btrfs on a 5-way
btrfs stripeset.

IOW, same 5-way stripeset, different filesystems and volume managers,
and very different performance.

And he's wondering why the btrfs method used for striping is so much
slower than the lvm method used for striping.

--
Freddie Cash
fjwcash@gmail.com



--
Freddie Cash
fjwcash@gmail.com

  parent reply	other threads:[~2010-06-16 19:35 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-24 21:08 Confused by performance K. Richard Pixley
2010-05-25  3:59 ` Mike Fedyk
2010-05-28  1:45 ` K. Richard Pixley
2010-06-16 18:08   ` K. Richard Pixley
2010-06-16 19:21     ` Roberto Ragusa
     [not found]       ` <AANLkTinM6ab_KEynfgvVT9v5TmcogoLZ0PLAz2oPnsiS@mail.gmail.com>
2010-06-16 19:35         ` Freddie Cash [this message]
2010-06-16 19:56           ` Roberto Ragusa
2010-06-17  6:57           ` David Brown
2010-06-16 21:44     ` Daniel J Blueman
2010-06-17  9:57     ` Chris Mason

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