From: Jason Wang > > On Mon, Dec 01, 2014 at 06:17:03PM +0800, Jason Wang wrote: > >> Hello: > >> > >> We used to orphan packets before transmission for virtio-net. This > >> breaks > >> socket accounting and can lead serveral functions won't work, e.g: > >> > >> - Byte Queue Limit depends on tx completion nofication to work. > >> - Packet Generator depends on tx completion nofication for the last > >> transmitted packet to complete. > >> - TCP Small Queue depends on proper accounting of sk_wmem_alloc to > >> work. > >> > >> This series tries to solve the issue by enabling tx interrupts. To > >> minize > >> the performance impacts of this, several optimizations were used: > >> > >> - In guest side, virtqueue_enable_cb_delayed() was used to delay the tx > >> interrupt untile 3/4 pending packets were sent. Doesn't that give problems for intermittent transmits? ... David _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
