Re: [PATCH] blk-cgroup: Lower minimum weight from 100 to 10.

From: Vivek Goyal
Date: Tue Mar 08 2011 - 09:31:17 EST


On Mon, Mar 07, 2011 at 02:53:14PM -0800, Justin TerAvest wrote:
> We've found that we still get good, useful isolation at weights this
> low. I'd like to adjust the minimum so that any other changes can take
> these values into account.
> ---
> Documentation/cgroups/blkio-controller.txt | 2 +-
> block/blk-cgroup.h | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>

Looks good to me.

Acked-by: Vivek Goyal <vgoyal@xxxxxxxxxx>

Thanks
Vivek

> diff --git a/Documentation/cgroups/blkio-controller.txt b/Documentation/cgroups/blkio-controller.txt
> index 4ed7b5c..24314fd 100644
> --- a/Documentation/cgroups/blkio-controller.txt
> +++ b/Documentation/cgroups/blkio-controller.txt
> @@ -140,7 +140,7 @@ Proportional weight policy files
> - Specifies per cgroup weight. This is default weight of the group
> on all the devices until and unless overridden by per device rule.
> (See blkio.weight_device).
> - Currently allowed range of weights is from 100 to 1000.
> + Currently allowed range of weights is from 10 to 1000.
>
> - blkio.weight_device
> - One can specify per cgroup per device rules using this interface.
> diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
> index ea4861b..57e7234 100644
> --- a/block/blk-cgroup.h
> +++ b/block/blk-cgroup.h
> @@ -240,7 +240,7 @@ static inline char *blkg_path(struct blkio_group *blkg) { return NULL; }
>
> #endif
>
> -#define BLKIO_WEIGHT_MIN 100
> +#define BLKIO_WEIGHT_MIN 10
> #define BLKIO_WEIGHT_MAX 1000
> #define BLKIO_WEIGHT_DEFAULT 500
>
> --
> 1.7.3.1
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