On Thu, Sep 06, 2012 at 05:27:23PM +0930, Rusty Russell wrote: > "Michael S. Tsirkin" <m...@redhat.com> writes: > > Yes without checksum net core always linearizes packets, so yes it is > > screwed. > > For -net, skb always allocates space for 17 frags + linear part so > > it seems sane to do same in virtio core, and allocate, for -net, > > up to max_frags + 1 from cache. > > We can adjust it: no _SG -> 2 otherwise 18. > > But I thought it used individual buffers these days?
Yes for receive, no for transmit. That's probably why we should have the threshold per vq, not per device, BTW. -- MST -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
