From: Ted Ts'o <tytso@mit.edu>
To: linux-ext4@vger.kernel.org
Cc: akpm@linux-foundation.org
Subject: Re: [PATCH -v2 0/6] ext4: use the bio layer directly
Date: Sat, 23 Oct 2010 19:03:39 -0400 [thread overview]
Message-ID: <20101023230338.GD24650@thunk.org> (raw)
In-Reply-To: <1287866420-23762-1-git-send-email-tytso@mit.edu>
On Sat, Oct 23, 2010 at 04:40:14PM -0400, Theodore Ts'o wrote:
> This set of patches passes xfstests for both 1k and 4k block sizes. For
> streaming I/O writes, it reduces the number of block I/O queue
> submissions by a factor of 1024 in the ideal case. (i.e., instead of
> submitting 4k requests at a time, we can now submit up to 512k writes at
> a time, a 128 factor of improvement.)
Sigh, this paragraph isn't quite right. Let me reword:
This set of patches passes xfstests for both 1k and 4k block sizes. For
streaming I/O writes, it reduces the number of block I/O queue
submissions by a factor of 128 in the ideal case. (i.e., instead of
submitting 4k requests at a time, we can now submit up to 512k writes at
a time.)
- Ted
next prev parent reply other threads:[~2010-10-23 23:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-23 20:40 [PATCH -v2 0/6] ext4: use the bio layer directly Theodore Ts'o
2010-10-23 20:40 ` [PATCH -v2 1/6] ext4: call mpage_da_submit_io() from mpage_da_map_blocks() Theodore Ts'o
2010-10-23 20:40 ` [PATCH -v2 2/6] ext4: simplify ext4_writepage() Theodore Ts'o
2010-10-23 20:40 ` [PATCH -v2 3/6] ext4: inline ext4_writepage() into mpage_da_submit_io() Theodore Ts'o
2010-10-23 20:40 ` [PATCH -v2 4/6] ext4: inline walk_page_buffers() into mpage_da_submit_io Theodore Ts'o
2010-10-23 20:40 ` [PATCH -v2 5/6] ext4: move mpage_put_bnr_to_bhs()'s functionality to mpage_da_submit_io() Theodore Ts'o
2010-10-23 20:40 ` [PATCH -v2 6/6] ext4: use bio layer instead of buffer layer in mpage_da_submit_io Theodore Ts'o
2010-10-25 5:16 ` Dmitry
2010-10-25 12:33 ` Ted Ts'o
2010-10-25 13:05 ` Dmitry
2010-10-23 23:03 ` Ted Ts'o [this message]
2010-10-30 19:10 ` [PATCH -v2 0/6] ext4: use the bio layer directly Eric Whitney
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