From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dor Laor Subject: [Virtio-for-kvm] [PATCH 11/13] [Mostly resend] virtio additions Date: Fri, 21 Dec 2007 17:26:36 +0200 Message-ID: <476BDB2C.8070100@qumranet.com> Reply-To: dor.laor-atKUWr5tajBWk0Htik3J/w@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: kvm-devel , virtualization , Rusty Russell , Anthony Liguori , Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org From 867f898388bda2dccf6d0aba2a9c96abae1697ed Mon Sep 17 00:00:00 2001 From: Dor Laor Date: Sun, 16 Dec 2007 15:19:43 +0200 Subject: [PATCH] Parametrize the napi_weight for virtio receive queue. It is done in order to improve performance. Signed-off-by: Dor Laor --- drivers/net/virtio_net.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 0403d65..d35dbe7 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -25,6 +25,9 @@ #include #include +static int napi_weight = 128; +module_param(napi_weight, int, 0); + /* FIXME: MTU in config. */ #define MAX_PACKET_LEN (ETH_HLEN+ETH_DATA_LEN) @@ -508,7 +511,7 @@ static int virtnet_probe(struct virtio_device *vdev) /* Set up our device-specific information */ vi = netdev_priv(dev); - netif_napi_add(dev, &vi->napi, virtnet_poll, 16); + netif_napi_add(dev, &vi->napi, virtnet_poll, napi_weight); vi->dev = dev; vi->vdev = vdev; hrtimer_init(&vi->tx_timer, CLOCK_REALTIME, HRTIMER_MODE_REL); -- 1.5.3.3 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/