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Re: [Qemu-devel] [PATCH] ram_save_live: add a no-progress convergence ru

From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH] ram_save_live: add a no-progress convergence rule
Date: Tue, 19 May 2009 13:09:58 -0500
User-agent: Thunderbird (X11/20090320)

Glauber Costa wrote:
Another possibility is for the management tool to increase the bandwidth for
little periods if it perceives that no progress is being made.

Anyhow, I completely agree that we should not introduce this in qemu.

However, maybe we could augment our "info migrate" to provide more info about
the internal state of migration, so the mgmt tool can take a more informed
Yes, I've also suggested this before. I'm willing to expose just about any metric that makes sense. We need to be careful about not exposing implementation details, but things like iteration count, last working set size, average working set size, etc. should all be relatively stable metrics even if the implementation changes.


Anthony Liguori

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