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Re: [RFC 2/6] qapi/migration: Introduce vcpu-dirtylimit parameters
From: |
Eric Blake |
Subject: |
Re: [RFC 2/6] qapi/migration: Introduce vcpu-dirtylimit parameters |
Date: |
Wed, 18 May 2022 10:06:27 -0500 |
User-agent: |
NeoMutt/20220429-71-6f7d3e |
On Tue, May 17, 2022 at 02:35:02PM +0800, huangy81@chinatelecom.cn wrote:
> From: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
>
> Introduce "vcpu-dirtylimit" migration parameter used
> to limit dirty page rate during live migration.
>
> "vcpu-dirtylimit" and "vcpu-dirtylimit-period" are
> two dirtylimit-related migration parameters, which can
> be set before and during live migration by qmp
> migrate-set-parameters.
>
> This two parameters are used to help implement the dirty
> page rate limit algo of migration.
>
> Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
> ---
> +++ b/qapi/migration.json
> @@ -763,6 +763,9 @@
> # @vcpu-dirtylimit-period: Periodic time (ms) of dirtylimit during live
> migration.
> # Defaults to 500ms. (Since 7.0)
> #
> +# @vcpu-dirtylimit: Dirtyrate limit (MB/s) during live migration.
> +# Defaults to 1. (Since 7.0)
> +#
Same comments as in patch 1 (since 7.1, question on whether
dirty-limit makes more sense).
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
- [RFC 0/6] migration: introduce dirtylimit capability, huangy81, 2022/05/17
- [RFC 4/6] migration: Introduce dirtylimit capability, huangy81, 2022/05/17
- [RFC 2/6] qapi/migration: Introduce vcpu-dirtylimit parameters, huangy81, 2022/05/17
- Re: [RFC 2/6] qapi/migration: Introduce vcpu-dirtylimit parameters,
Eric Blake <=
- [RFC 1/6] qapi/migration: Introduce vcpu-dirtylimit-period parameters, huangy81, 2022/05/17
- [RFC 5/6] migration: Add dirtylimit data into migration info, huangy81, 2022/05/17
- [RFC 6/6] tests: Add migration dirtylimit capability test, huangy81, 2022/05/17
- [RFC 3/6] migration: Implement dirtylimit convergence algo, huangy81, 2022/05/17