From: Eric Blake <eblake@redhat.com>
To: Peter Lieven <pl@kamp.de>, qemu-devel@nongnu.org
Cc: kwolf@redhat.com, pbonzini@redhat.com, stefanha@redhat.com
Subject: Re: [Qemu-devel] [PATCHv3 1.8 6/9] qemu-img: dynamically adjust iobuffer size during convert
Date: Thu, 05 Dec 2013 06:30:46 -0700 [thread overview]
Message-ID: <52A08006.2030904@redhat.com> (raw)
In-Reply-To: <1385546829-3839-7-git-send-email-pl@kamp.de>
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On 11/27/2013 03:07 AM, Peter Lieven wrote:
> since the convert process is basically a sync operation it might
> be benificial in some case to change the hardcoded I/O buffer
s/benificial/beneficial/
> size to a greater value.
>
> This patch increases the I/O buffer size if the output
> driver advertises an optimal transfer length or discard alignment
> that is greater than the default buffer size of 2M.
>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2013-12-05 13:31 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-27 10:07 [Qemu-devel] [PATCHv3 1.8 0/9] qemu-img convert optimizations Peter Lieven
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 1/9] qemu-img: add support for skipping zeroes in input during convert Peter Lieven
2013-11-27 10:17 ` Paolo Bonzini
2013-12-04 16:46 ` Stefan Hajnoczi
2013-12-04 16:51 ` Peter Lieven
2013-12-05 10:30 ` Stefan Hajnoczi
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 2/9] qemu-img: fix usage instruction for qemu-img convert Peter Lieven
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 3/9] block/iscsi: set bdi->cluster_size Peter Lieven
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 4/9] block: add opt_transfer_length to BlockLimits Peter Lieven
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 5/9] block/iscsi: set bs->bl.opt_transfer_length Peter Lieven
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 6/9] qemu-img: dynamically adjust iobuffer size during convert Peter Lieven
2013-12-05 13:30 ` Eric Blake [this message]
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 7/9] qemu-img: round down request length to an aligned sector Peter Lieven
2013-12-04 15:49 ` Stefan Hajnoczi
2013-12-04 15:56 ` Peter Lieven
2013-12-05 10:33 ` Stefan Hajnoczi
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 8/9] qemu-img: increase min_sparse to 128 sectors (64kb) Peter Lieven
2013-12-04 16:43 ` Stefan Hajnoczi
2013-12-04 16:46 ` Peter Lieven
2013-12-05 2:12 ` Eric Blake
2013-12-05 4:55 ` Peter Lieven
2013-12-05 10:35 ` Stefan Hajnoczi
2013-11-27 10:07 ` [Qemu-devel] [PATCHv3 1.8 9/9] qemu-img: decrease progress update interval on convert Peter Lieven
2013-12-05 12:15 ` [Qemu-devel] [PATCHv3 1.8 0/9] qemu-img convert optimizations Stefan Hajnoczi
2013-12-05 14:55 ` Peter Lieven
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