Re: [PATCH RFC v2 3/3] qapi/iothread: introduce poll-weight parameter for aio-poll

[Stefan Hajnoczi <stefanha@redhat.com>]

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On Mon, Mar 23, 2026 at 08:54:51AM -0500, Jaehoon Kim wrote:
> diff --git a/qapi/misc.json b/qapi/misc.json
> index 28c641fe2f..39d17010bc 100644
> --- a/qapi/misc.json
> +++ b/qapi/misc.json
> @@ -85,6 +85,12 @@
>  # @poll-shrink: how many ns will be removed from polling time, 0 means
>  #     that it's not configured (since 2.9)
>  #
> +# @poll-weight: the weight factor for adaptive polling.
> +#     Determines how much the current event interval contributes to
> +#     the next polling time calculation.  Valid values are 1 or
> +#     greater.  0 selects the system default value which is current 3
> +#     (since 10.2)

QEMU 11.0 is already in hard freeze, so this patch will go into 11.1:

  (since 11.1)

> +#
>  # @aio-max-batch: maximum number of requests in a batch for the AIO
>  #     engine, 0 means that the engine will use its default (since 6.1)
>  #
> @@ -96,6 +102,7 @@
>             'poll-max-ns': 'int',
>             'poll-grow': 'int',
>             'poll-shrink': 'int',
> +           'poll-weight': 'int',
>             'aio-max-batch': 'int' } }
>  
>  ##
> diff --git a/qapi/qom.json b/qapi/qom.json
> index c653248f85..feb80b6cfe 100644
> --- a/qapi/qom.json
> +++ b/qapi/qom.json
> @@ -606,6 +606,11 @@
>  #     algorithm detects it is spending too long polling without
>  #     encountering events.  0 selects a default behaviour (default: 0)
>  #
> +# @poll-weight: the weight factor for adaptive polling.
> +#     Determines how much the current event interval contributes to
> +#     the next polling time calculation.  Valid values are 1 or
> +#     greater.  If set to 0, the default value of 3 is used.

(since 11.1)

Other than that:

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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