From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Wise Subject: Re: [PATCH v4 01/13] Linux RDMA Core Changes Date: Wed, 03 Jan 2007 09:06:02 -0600 Message-ID: <1167836762.4187.15.camel@stevo-desktop> References: <1167836172.4187.9.camel@stevo-desktop> <20070103150230.GP6019@mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Roland Dreier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, openib-general@openib.org Return-path: Received: from rrcs-24-153-217-226.sw.biz.rr.com ([24.153.217.226]:56910 "EHLO smtp.opengridcomputing.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750838AbXACPGF (ORCPT ); Wed, 3 Jan 2007 10:06:05 -0500 To: "Michael S. Tsirkin" In-Reply-To: <20070103150230.GP6019@mellanox.co.il> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Wed, 2007-01-03 at 17:02 +0200, Michael S. Tsirkin wrote: > > I've run this code with mthca and didn't notice any performance > > degradation, but I wasn't specifically measuring cq_poll overhead in a > > tight loop... > > We were speaking about ib_req_notify_cq here, actually, not cq poll. > So what was tested? > Sorry, I meant req_notify. I didn't specifically measure the cost of req_notify before and after this change. I've been running the user mode perftest programs mainly.