On Wed, 2015-04-15 at 18:23 +0100, George Dunlap wrote: > Which means that max(2*skb->truesize, sk->sk_pacing_rate >>10) is > *already* larger for Xen; that calculation mentioned in the comment is > *already* doing the right thing.
Sigh. 1ms of traffic at 40Gbit is 5 MBytes The reason for the cap to /proc/sys/net/ipv4/tcp_limit_output_bytes is to provide the limitation of ~2 TSO packets, which _also_ is documented. Without this limitation, 5 MBytes could translate to : Fill the queue, do not limit. If a particular driver needs to extend the limit, fine, document it and take actions. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
