On Tue, 6 Apr 2010 14:26:29 +0800
"Xin, Xiaohui" <xiaohui.xin@intel.com> wrote:

quoted text
> >How do you deal with the DoS problem of hostile user space app posting huge
> >number of receives and never getting anything.   
> 
> That's a problem we are trying to deal with. It's critical for long term.
> Currently, we tried to limit the pages it can pin, but not sure how much is reasonable.
> For now, the buffers submitted is from guest virtio-net driver, so it's safe in some extent
> just for now.

It is critical even now. Once you get past toy benchmarks you will see things like
Java processes with 1000 threads all reading at once. 
--
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/