Re: [Xen-devel] [PATCH v3 4/7] libxl: vNUMA supporting interface

[Li Yechen <lccycc123@xxxxxxxxx>]

Hi Elena and Dario, 

> +    /* Determine the best nodes to fit vNUMA nodes */
> +    /* TODO: change algorithm. The current just fits the nodes
> +     * Will be nice to have them also sorted by size
> +     * If no p-node found, will be set to NUMA_NO_NODE
> +     */
> +    claim = calloc(info->nr_vnodes, sizeof(*claim));
> +    if (claim == NULL)
> +        return rc;
> +
> +    libxl_for_each_set_bit(n, info->nodemap)
> +    {
> +        for (i = 0; i < info->nr_vnodes; i++)
> +        {
> +            if (((claim[n] + (mems[i] << 20)) <= ninfo[n].free) &&
> +                 /*vnode was not set yet */
> +                 (info->vnode_to_pnode[i] == VNUMA_NO_NODE ) )
> +            {
> +                info->vnode_to_pnode[i] = n;
> +                claim[n] += (mems[i] << 20);
> +            }
> +        }
> +    }
> +

So in the initial part, each vnode is set to EXACTLY ONE pnode, right?

--

Yechen Li

Team of System Virtualization and Cloud Computing 
School of Electronic Engineering  and Computer Science, 
Peking University, China

Nothing is impossible because impossible itself  says: " I'm possible "

lccycc From PKU

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