[openib-general] Re: [PATCH] [SRP] support for it_iu length negotiation

[John Kingman]

On Mon, 31 Oct 2005, Roland Dreier wrote:

>With that said I don't think I like this patch.  I don't think it's a
>win to allocate 1 KB IUs when we'll almost never have gather/scatter
>lists that big.  Even the 256 byte IUs that the current driver uses
>seem on the borderline of being too big.
>
>Also, is it really a win to have the target fetch a large indirect
>buffer list?  It seems like it would be better for performance to give
>the SCSI layer a limit on the size of the gather/scatter list we
>support so that our indirect buffer lists always fit in the IUs we send.

Without knowing what the optimal values should be, perhaps we should
make some of these module parameters.

John