From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olaf Hering <olaf@aepfle.de>
Subject: Re: [PATCH] tools/libxc: send page-in requests in
 batches in linux_privcmd_map_foreign_bulk
Date: Fri, 27 Jan 2012 13:35:53 +0100
Message-ID: <20120127123553.GA28750@aepfle.de>
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To: Andres Lagar-Cavilla <andres@lagarcavilla.org>
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On Thu, Jan 26, Andres Lagar-Cavilla wrote:

> You could pass the whole arr sub-segment encompassing the first and last
> gfn that failed with ENOENT. Successful maps within that array will be
> re-done by the hypervisor, at no correctness cost. I would imagine that
> the extra work is offset by the gains, but that remains to be seen.

I just tried it once again, and as xenpaging is written now a live
migration of an idle 512MB guest with 90MB paging target was done in
less than a minute. Previously it took a very long time, 2MB/sec. were
sent over the wire.

Olaf