From mboxrd@z Thu Jan 1 00:00:00 1970 From: Divy Le Ray Subject: Re: [PATCH 2/13] cxgb3 - Update rx coalescing length Date: Tue, 14 Aug 2007 16:22:05 -0700 Message-ID: <46C2391D.1060608@chelsio.com> References: <20070811062939.8040.31490.stgit@speedy5> <46C14096.3020905@garzik.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Steve Wise To: Jeff Garzik Return-path: Received: from stargate.chelsio.com ([12.22.49.110]:29167 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754232AbXHNXWL (ORCPT ); Tue, 14 Aug 2007 19:22:11 -0400 In-Reply-To: <46C14096.3020905@garzik.org> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Jeff Garzik wrote: > > Divy Le Ray wrote: > > From: Divy Le Ray > > > > Set max Rx coalescing length to 12288 > > > > Signed-off-by: Divy Le Ray > > --- > > > > drivers/net/cxgb3/common.h | 2 +- > > 1 files changed, 1 insertions(+), 1 deletions(-) > > > > diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h > > index c46c249..55922ed 100644 > > --- a/drivers/net/cxgb3/common.h > > +++ b/drivers/net/cxgb3/common.h > > @@ -104,7 +104,7 @@ enum { > > PROTO_SRAM_LINES = 128, /* size of TP sram */ > > }; > > > > -#define MAX_RX_COALESCING_LEN 16224U > > +#define MAX_RX_COALESCING_LEN 12288U > > neither the patch nor description explains -why- > We're seeing back pressure from PCIe with large bursts, this patch allows to cut down on the burst size. Divy