[dpdk-dev] How to fight forwarding performance regression on large mempool sizes.

[Dmitry Vyal]

On 09/19/2013 11:39 PM, Robert Sanford wrote:
> Hi Dmitry,
>
> The biggest drop-off seems to be from size 128K to 256K. Are you using 
> 1GB huge pages already (rather than 2MB)?
>
> I would think that it would not use over 1GB until you ask for 512K 
> mbufs or more.
>

Hi Robert,

Yes, I've been using 1GB pages for a while. My L3 cache is 20MB and 
mbufs are 2240 bytes of size. So something strange indeed happens then 
we move from ~200MB to ~400MB. Any ideas?

Regards,
Dmitry