From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Wright <chrisw@sous-sol.org>
Subject: Re: [PATCH 1/2] virtio: block: set max_segment_size and
	max_sectors to infinite.
Date: Wed, 3 Dec 2008 10:43:21 -0800
Message-ID: <20081203184321.GC19628@sequoia.sous-sol.org>
References: <200811141215.33950.rusty@rustcorp.com.au>
	<20081114093023.GQ26778@kernel.dk>
	<200811171722.43792.rusty@rustcorp.com.au>
	<200811171724.15682.rusty@rustcorp.com.au>
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To: Rusty Russell <rusty@rustcorp.com.au>
Cc: kvm-devel <kvm-devel@lists.sourceforge.net>, Anthony Liguori <aliguori@us.ibm.com>, virtualization@lists.linux-foundation.org, Jens Axboe <jens.axboe@oracle.com>
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* Rusty Russell (rusty@rustcorp.com.au) wrote:
> Setting max_segment_size allows more than 64k per sg element, unless
> the host specified a limit.  Setting max_sectors indicates that our
> max_hw_segments is the only limit.

We had been using a simple hardocded constant to increase max sectors to
improve throughput.  This (along with 2/2) are tested and showing nice numbers.

Acked-by: Chris Wright <chrisw@sous-sol.org>