From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roland Dreier Subject: Re: [ewg] [PATCH] mlx4_core: request MSIX vectors as much as there CPU cores Date: Wed, 05 May 2010 12:51:19 -0700 Message-ID: References: <20100505113047.GA12242@mtldesk030.lab.mtl.com> <20100505163252.GG15969@obsidianresearch.com> <4BE1C82F.4000009@mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <4BE1C82F.4000009-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org> (Tziporet Koren's message of "Wed, 05 May 2010 22:34:07 +0300") Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: tziporet-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org Cc: Jason Gunthorpe , Linux RDMA list , Eli Cohen , ewg List-Id: linux-rdma@vger.kernel.org > We found it in performance work of our EN (10G) driver What does this have to do with performance? Do you have a system where num_possible_cpus() differs significantly from num_online_cpus()? What kernel is that with? As far as I can tell, for x86 they should only be different if there genuinely are CPUs that are available for hotplug. - R. -- Roland Dreier || For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/index.html -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html